:root {
  --ink: #14213d;
  --paper: #fffdf6;
  --blue: #1d4ed8;
  --sky: #7dd3fc;
  --mint: #86efac;
  --lime: #bef264;
  --yellow: #fde047;
  --coral: #fb7185;
  --violet: #8b5cf6;
  --white: #ffffff;
  --shadow: 8px 9px 0 var(--ink);
  --small-shadow: 4px 5px 0 var(--ink);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(20, 33, 61, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(20, 33, 61, 0.06) 1px, transparent 1px),
    var(--paper);
  background-size: 28px 28px;
  font-family: "Nunito", system-ui, sans-serif;
}

button,
input,
select {
  font: inherit;
}

button {
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  padding: 16px clamp(18px, 5vw, 56px);
  border-bottom: 4px solid var(--ink);
  background: rgba(255, 253, 246, 0.92);
  backdrop-filter: blur(14px);
}

.brand,
.nav-links,
.hero-actions,
.stats-band,
.window-dots {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 1000;
  font-size: 1.1rem;
}

.brand-logo {
  width: clamp(110px, 16.1vw, 173px);
  height: auto;
  display: block;
}

.nav-links {
  gap: 18px;
  font-weight: 900;
  margin-right: clamp(24px, 5vw, 88px);
}

.nav-links a,
.nav-dropdown summary {
  border-bottom: 3px solid transparent;
}

.nav-links a:hover,
.nav-dropdown summary:hover {
  border-color: var(--coral);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown:not([open]) > .dropdown-menu,
.dropdown-submenu:not([open]) > .studio-topic-groups,
.dropdown-submenu:not([open]) > .submenu-links,
.lesson-cluster:not([open]) > .cluster-links {
  display: none;
}

.nav-dropdown summary {
  cursor: pointer;
  list-style: none;
}

.nav-dropdown summary::-webkit-details-marker {
  display: none;
}

.nav-dropdown summary::after {
  content: " ▾";
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 14px);
  left: 0;
  z-index: 30;
  width: min(340px, calc(100vw - 32px));
  display: grid;
  gap: 7px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 10px;
  font-size: clamp(0.86rem, 1.35vw, 1rem);
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.oop-nav .dropdown-menu {
  right: 0;
  left: auto;
}

.foundations-nav .dropdown-menu {
  width: min(420px, calc(100vw - 32px));
}

.code-nav .dropdown-menu {
  width: min(420px, calc(100vw - 32px));
}

.dropdown-menu a,
.dropdown-submenu summary,
.lesson-cluster summary {
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: #fef3c7;
  padding: 7px 10px;
  line-height: 1.15;
}

.dropdown-menu a.is-current {
  background: var(--mint);
}

.studio-menu-label {
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: var(--sky);
  padding: 7px 10px;
  font-weight: 1000;
  line-height: 1.15;
}

.dropdown-submenu {
  display: grid;
  gap: 6px;
}

.dropdown-submenu summary,
.lesson-cluster summary {
  cursor: pointer;
  font-weight: 1000;
  list-style: none;
}

.nav-age {
  display: block;
  margin-top: 3px;
  font-size: 0.76rem;
  font-weight: 900;
  color: rgba(20, 33, 61, 0.72);
}

.nav-age-inline {
  display: block;
  margin-top: 3px;
  font-size: 0.68rem;
  font-weight: 900;
  color: rgba(20, 33, 61, 0.62);
}

.dropdown-submenu summary::-webkit-details-marker,
.lesson-cluster summary::-webkit-details-marker {
  display: none;
}

.dropdown-submenu > summary::after,
.lesson-cluster > summary::after {
  content: " ▾";
}

.studio-topic-groups {
  display: grid;
  gap: 6px;
  padding-left: 8px;
}

.lesson-cluster {
  display: grid;
  gap: 5px;
}

.lesson-cluster summary {
  background: #eef2ff;
  color: rgba(20, 33, 61, 0.88);
  border-width: 2px;
  padding: 5px 9px;
}

.submenu-links {
  display: grid;
  gap: 6px;
  padding-left: 10px;
  padding-right: 4px;
}

.cluster-links {
  gap: 5px;
  padding-left: 8px;
  padding-right: 0;
}

.cluster-links a {
  border-width: 2px;
  padding: 6px 9px;
}

.submenu-links a {
  background: #fff7cc;
}

.foundation-preview-row {
  display: grid;
  gap: 8px;
}

.foundation-preview-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.code-nav .studio-links,
.oop-nav .studio-links {
  padding-right: 0;
}

.submenu-links a.studio-heading {
  background: var(--sky);
  font-weight: 1000;
}

.submenu-links a.studio-heading.is-muted {
  background: #eef2ff;
  color: rgba(20, 33, 61, 0.72);
}

.studio-divider {
  display: block;
  height: 4px;
  border-radius: 999px;
  background: rgba(20, 33, 61, 0.14);
  margin: 4px 0;
}

.dropdown-menu .dropdown-heading {
  background: var(--sky);
}

.dropdown-menu .dropdown-heading.is-muted {
  background: #eef2ff;
  color: rgba(20, 33, 61, 0.72);
}

.hero-section {
  min-height: calc(100vh - 78px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.9fr);
  align-items: center;
  gap: clamp(22px, 4vw, 56px);
  padding: clamp(22px, 4vw, 48px) clamp(18px, 6vw, 72px);
}

.hero-copy h1,
.section-heading h2,
.playground-copy h2,
.start-section h2 {
  font-family: "Fredoka", system-ui, sans-serif;
  letter-spacing: 0;
}

.hero-copy h1 {
  max-width: 720px;
  margin: 14px 0;
  font-size: clamp(3rem, 6.15vw, 6rem);
  line-height: 0.92;
  text-shadow: 4px 4px 0 var(--yellow);
}

.hero-copy p,
.playground-copy p,
.start-section p {
  max-width: 680px;
  font-size: 1.25rem;
  line-height: 1.55;
  font-weight: 800;
}

.eyebrow {
  display: inline-flex;
  width: fit-content;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--mint);
  box-shadow: var(--small-shadow);
  padding: 8px 14px;
  font-weight: 1000;
}

.hero-actions {
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 20px;
}

.primary-button,
.secondary-button,
.next-lesson-button,
.ai-grade-button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 54px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  box-shadow: var(--small-shadow);
  padding: 13px 18px;
  font-weight: 1000;
  cursor: pointer;
  transition:
    transform 150ms ease,
    box-shadow 150ms ease;
}

.primary-button {
  background: var(--yellow);
}

.secondary-button {
  background: var(--white);
}

.next-lesson-button {
  width: 100%;
  margin-top: 14px;
  background: #fb923c;
  color: var(--ink);
  font-size: 1.2rem;
}

.ai-grade-button {
  background: #fb923c;
}

.next-lesson-button[hidden] {
  display: none;
}

.primary-button:hover,
.secondary-button:hover,
.next-lesson-button:hover,
.ai-grade-button:hover {
  transform: translateY(-2px);
}

.primary-button:active,
.secondary-button:active,
.next-lesson-button:active,
.ai-grade-button:active {
  transform: translateY(3px);
  box-shadow: 2px 2px 0 var(--ink);
}

.hero-stage {
  position: relative;
  min-height: 390px;
}

.code-window {
  min-height: 310px;
  border: 5px solid var(--ink);
  border-radius: 22px;
  background: #101827;
  color: #bbf7d0;
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: rotate(1.5deg);
}

.window-dots {
  gap: 8px;
  padding: 14px;
  border-bottom: 4px solid var(--ink);
  background: var(--sky);
}

.window-dots span {
  width: 16px;
  height: 16px;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
}

.window-dots span:nth-child(2) {
  background: var(--coral);
}

.window-dots span:nth-child(3) {
  background: var(--mint);
}

pre {
  margin: 0;
  white-space: pre-wrap;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 1rem;
  line-height: 1.6;
}

.code-window pre {
  padding: 20px 22px;
}

.launch-card {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(76%, 320px);
  border: 5px solid var(--ink);
  border-radius: 20px;
  background: var(--lime);
  box-shadow: var(--shadow);
  padding: 17px;
  transform: rotate(-4deg);
}

.launch-card strong,
.launch-card span {
  display: block;
}

.launch-card strong {
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.45rem;
  margin-bottom: 8px;
}

.launch-card span {
  font-weight: 900;
  line-height: 1.35;
}

.stats-band {
  justify-content: center;
  flex-wrap: wrap;
  gap: 18px;
  padding: 0 clamp(18px, 6vw, 72px) 48px;
}

.stats-band article {
  width: min(100%, 300px);
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--white);
  box-shadow: var(--small-shadow);
  padding: 18px;
}

.stats-band strong {
  display: block;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 2.6rem;
  line-height: 1;
}

.stats-band span {
  font-weight: 900;
}

.section,
.playground-section,
.start-section {
  padding: clamp(46px, 7vw, 82px) clamp(18px, 6vw, 72px);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 24px;
}

.section-heading h2,
.playground-copy h2,
.start-section h2 {
  margin: 14px 0;
  font-size: clamp(2.25rem, 5vw, 4.6rem);
  line-height: 0.95;
}

.pathway-grid,
.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.pathway-card,
.project-card,
.quest-builder,
.quest-output,
.lesson-meta,
.lesson-notice,
.scaffold-grid article,
.activity-card {
  border: 5px solid var(--ink);
  border-radius: 18px;
  box-shadow: var(--small-shadow);
}

.pathway-card,
.project-card {
  min-height: 220px;
  background: var(--white);
  padding: 18px;
}

.pathway-card {
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  transition:
    transform 150ms ease,
    box-shadow 150ms ease;
}

.pathway-card:hover,
.pathway-card.is-active {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.pathway-card:nth-child(1),
.project-card:nth-child(3) {
  background: #dbeafe;
}

.pathway-card:nth-child(2),
.project-card:nth-child(1) {
  background: #fef3c7;
}

.pathway-card:nth-child(3),
.project-card:nth-child(4) {
  background: #dcfce7;
}

.pathway-card:nth-child(4) {
  background: #fce7f3;
}

.pathway-card:nth-child(5),
.project-card:nth-child(2) {
  background: #ede9fe;
}

.pathway-card span,
.project-card span {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: var(--white);
  box-shadow: 3px 4px 0 var(--ink);
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.5rem;
  font-weight: 1000;
}

.pathway-card h3,
.project-card h3,
.quest-output h3 {
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.65rem;
  line-height: 1;
  margin: 18px 0 10px;
}

.pathway-card p,
.project-card p,
.quest-output p {
  font-weight: 850;
  line-height: 1.45;
}

.pathway-card small {
  display: inline-flex;
  margin-top: 12px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--white);
  padding: 5px 9px;
  font-weight: 1000;
}

.foundations-nav .pathway-picker-menu {
  width: min(310px, calc(100vw - 32px));
  gap: 8px;
}

.pathway-picker-menu a {
  padding: 8px 11px;
  font-size: 0.95rem;
}

.pathway-overview {
  min-height: calc(100vh - 78px);
  padding: clamp(18px, 3vw, 34px) clamp(18px, 6vw, 72px);
  background:
    radial-gradient(circle at 11% 15%, rgba(253, 224, 71, 0.42) 0 86px, transparent 87px),
    radial-gradient(circle at 88% 10%, rgba(125, 211, 252, 0.34) 0 96px, transparent 97px),
    radial-gradient(circle at 94% 78%, rgba(134, 239, 172, 0.34) 0 74px, transparent 75px),
    linear-gradient(135deg, #fff7cc 0%, #fef3c7 62%, #eef6ff 100%);
  border-block: 5px solid var(--ink);
}

.pathway-overview-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  margin-bottom: 18px;
}

.pathway-overview-hero h1 {
  max-width: 840px;
  margin: 10px 0;
  font-size: clamp(2.5rem, 5.2vw, 5.55rem);
  line-height: 0.92;
}

.pathway-overview-hero p,
.pathway-metaphor-card p,
.pathway-unit p {
  font-weight: 900;
  line-height: 1.45;
}

.pathway-overview-hero p {
  max-width: 820px;
  font-size: clamp(1.02rem, 1.65vw, 1.3rem);
}

.pathway-metaphor-card,
.pathway-unit {
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--white);
  box-shadow: var(--small-shadow);
}

.pathway-metaphor-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 0.34fr);
  gap: 18px;
  align-items: center;
  margin-bottom: 14px;
  padding: clamp(14px, 2vw, 18px);
}

.pathway-metaphor-card h2 {
  margin: 8px 0;
  font-size: clamp(1.55rem, 2.75vw, 2.35rem);
  line-height: 0.98;
}

.pathway-map-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.pathway-unit {
  padding: clamp(18px, 3vw, 26px);
}

.pathway-unit > span {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border: 4px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 0 6px 0 var(--ink);
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.55rem;
  font-weight: 1000;
}

.studio-mascot-card {
  position: relative;
  min-height: 175px;
  overflow: hidden;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: linear-gradient(135deg, #dbeafe 0%, #dcfce7 55%, #fef3c7 100%);
  box-shadow: var(--small-shadow);
}

.studio-mascot-card::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 3px dashed rgba(20, 33, 61, 0.22);
  border-radius: 16px;
}

.mascot-robot {
  position: absolute;
  left: 14%;
  bottom: 15%;
  width: 38%;
  max-width: 125px;
  height: auto;
  filter: drop-shadow(4px 6px 0 rgba(20, 33, 61, 0.24));
}

.mascot-star {
  position: absolute;
  right: 17%;
  top: 16%;
  width: 20%;
  max-width: 68px;
  height: auto;
  filter: drop-shadow(3px 4px 0 rgba(20, 33, 61, 0.18));
}

.mascot-bubble {
  display: none;
  position: absolute;
  right: 14px;
  bottom: 14px;
  max-width: 55%;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: var(--white);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 8px 9px;
  font-size: 0.86rem;
  font-weight: 1000;
  line-height: 1.1;
}

.code-mascot {
  background: linear-gradient(135deg, #17213a 0%, #1d4ed8 58%, #7dd3fc 100%);
}

.mini-code-window {
  position: absolute;
  inset: 22px 18px auto;
  display: grid;
  gap: 7px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #101827;
  box-shadow: 4px 5px 0 rgba(20, 33, 61, 0.45);
  padding: 36px 14px 14px;
  color: #bbf7d0;
}

.mini-code-window span {
  position: absolute;
  top: 12px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #fb7185;
}

.mini-code-window span:nth-child(1) {
  left: 14px;
}

.mini-code-window span:nth-child(2) {
  left: 31px;
  background: #fde047;
}

.mini-code-window span:nth-child(3) {
  left: 48px;
  background: #86efac;
}

.mini-code-window code {
  font: 800 0.77rem/1.3 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

.oop-mascot {
  background: linear-gradient(135deg, #ede9fe 0%, #fce7f3 55%, #fef3c7 100%);
}

/* === OOP lesson 1: Alien Critter Factory === */
.critter-concept-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.critter-concept-strip > div {
  display: grid;
  gap: 4px;
  padding: 14px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fff;
}
.critter-concept-strip strong { font-size: 1.1rem; }
.critter-concept-strip span { font-weight: 800; }
.critter-factory-layout { display: grid; gap: 20px; }
.critter-factory-controls { width: 100%; }
.critter-control-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.critter-control-grid label { display: grid; gap: 6px; font-weight: 1000; }
.critter-control-grid input,
.critter-control-grid select {
  width: 100%;
  min-height: 48px;
  padding: 8px 10px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font-weight: 900;
}
.critter-blueprint-line {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  padding: 10px 14px;
  border: 3px dashed var(--ink);
  border-radius: 12px;
  background: #e5f4ff;
  font-weight: 800;
}
.critter-factory-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr);
  gap: 20px;
  align-items: start;
}
.critter-code-panel,
.critter-output-panel { min-width: 0; }
.critter-code-card {
  margin: 12px 0;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  overflow: hidden;
}
.critter-code-card pre {
  min-height: 285px;
  max-height: 330px;
  margin: 0;
  padding: 16px;
  overflow: auto;
  white-space: pre-wrap;
  font-size: .84rem;
  line-height: 1.5;
}
.critter-object-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
}
.critter-object-list p { grid-column: 1 / -1; margin: 0; }
.critter-object-chip {
  display: grid;
  gap: 2px;
  padding: 9px;
  border: 3px solid var(--ink);
  border-radius: 11px;
  background: #fff6bd;
  font-size: .8rem;
  font-weight: 900;
}
.critter-factory-stage {
  position: relative;
  display: grid;
  place-items: end center;
  min-height: 400px;
  overflow: hidden;
  margin: 12px 0;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: linear-gradient(rgba(8,15,29,.14), rgba(8,15,29,.32)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}
.critter-blueprint-card {
  position: absolute;
  z-index: 3;
  top: 18px;
  left: 18px;
  display: grid;
  gap: 3px;
  padding: 10px 13px;
  border: 4px solid #b9e7ff;
  border-radius: 12px;
  background: #1748a0;
  color: #fff;
  box-shadow: 5px 5px 0 var(--ink);
  transform: rotate(-3deg);
}
.critter-blueprint-card span { font-size: .72rem; }
.critter-build-beam {
  position: absolute;
  z-index: 1;
  top: 18%;
  left: 50%;
  width: 52%;
  height: 66%;
  transform: translateX(-50%);
  background: linear-gradient(transparent, rgba(101,231,255,.65), transparent);
  clip-path: polygon(38% 0, 62% 0, 100% 100%, 0 100%);
  opacity: .25;
}
.critter-factory-stage.is-building .critter-build-beam { animation: critterBeam .8s ease-in-out 2; }
.critter-factory-image {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 58px;
  width: min(48%, 230px);
  max-height: 260px;
  object-fit: contain;
  transform: translateX(-50%);
  filter: drop-shadow(0 10px 14px rgba(0,0,0,.5));
}
.critter-factory-stage.is-building .critter-factory-image { animation: critterMaterialize .85s cubic-bezier(.2,1.25,.4,1) both; }
.critter-factory-stage.power-bounce .critter-factory-image { animation: alienImageBounce .65s ease-in-out 5; }
.critter-factory-stage.power-float .critter-factory-image { animation: alienImageFloat 1.15s ease-in-out 4; }
.critter-factory-stage.power-dance .critter-factory-image { animation: alienImageDance .55s ease-in-out 7; }
.critter-factory-stage.power-glow .critter-factory-image { animation: critterGlow .65s ease-in-out 6; }
.critter-factory-stage.power-stretch .critter-factory-image { animation: critterStretch .65s ease-in-out 5; }
.critter-nameplate {
  position: relative;
  z-index: 4;
  margin-bottom: 14px;
  padding: 8px 14px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  font-weight: 1000;
}
.critter-color-green { filter: sepia(.9) saturate(6) hue-rotate(55deg) brightness(.9) drop-shadow(0 10px 14px rgba(0,0,0,.5)); }
.critter-color-pink { filter: sepia(.85) saturate(8) hue-rotate(285deg) brightness(1.05) drop-shadow(0 10px 14px rgba(0,0,0,.5)); }
.critter-color-blue { filter: sepia(1) saturate(7) hue-rotate(155deg) brightness(.95) drop-shadow(0 10px 14px rgba(0,0,0,.5)); }
.critter-color-yellow { filter: sepia(1) saturate(7) hue-rotate(2deg) brightness(1.05) drop-shadow(0 10px 14px rgba(0,0,0,.5)); }
.critter-color-purple { filter: sepia(1) saturate(7) hue-rotate(215deg) brightness(.9) drop-shadow(0 10px 14px rgba(0,0,0,.5)); }
.alien-exact-color { filter: drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
@keyframes critterBeam { 50% { opacity: .9; filter: brightness(1.6); } }
@keyframes critterMaterialize { from { transform: translateX(-50%) scale(.08); opacity: 0; } to { transform: translateX(-50%) scale(1); opacity: 1; } }
@keyframes critterGlow { 50% { filter: drop-shadow(0 0 35px #fff) brightness(1.7); transform: translateX(-50%) scale(1.08); } }
@keyframes critterStretch { 50% { transform: translateX(-50%) scale(.72, 1.35); } }

@media (max-width: 820px) {
  .critter-concept-strip,
  .critter-control-grid,
  .critter-factory-workbench { grid-template-columns: minmax(0, 1fr); }
  .critter-factory-stage { min-height: 360px; }
}

/* === OOP lesson 1 builder: Alien Mission Team === */
.alien-team-builder { display: grid; gap: 20px; }
.alien-team-controls { width: 100%; }
.alien-team-control-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
.alien-team-control-grid label { display: grid; gap: 6px; font-weight: 1000; }
.alien-team-control-grid input,
.alien-team-control-grid select {
  width: 100%;
  min-height: 46px;
  padding: 8px 10px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: #fff;
  color: var(--ink);
  font-weight: 900;
}
.alien-team-add-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.alien-team-preview {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 7px 12px;
  border: 3px dashed var(--ink);
  border-radius: 14px;
  background: #eafaff;
  font-weight: 900;
}
.alien-team-preview img {
  width: 58px;
  height: 58px;
  object-fit: contain;
}
.alien-team-preview > span { overflow-wrap: anywhere; }
.alien-team-preview[hidden] { display: none; }
.alien-team-workbench {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(520px, 1.1fr);
  gap: 20px;
  align-items: start;
}
.alien-team-code-panel,
.alien-team-output { min-width: 0; }
.alien-team-code-card pre {
  min-height: 390px;
  max-height: 440px;
  font-size: .8rem;
}
.alien-team-stage {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: end;
  gap: 10px;
  min-height: 430px;
  padding: 70px 18px 22px;
  overflow: hidden;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: linear-gradient(rgba(8,15,29,.08), rgba(8,15,29,.35)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}
.alien-team-empty {
  grid-column: 1 / -1;
  align-self: center;
  justify-self: center;
  max-width: 80%;
  padding: 12px 18px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  text-align: center;
  font-weight: 1000;
}
.alien-team-member {
  position: relative;
  display: grid;
  justify-items: center;
  align-content: end;
  min-width: 0;
  min-height: 300px;
  padding: 8px;
  border: 4px solid rgba(255,255,255,.65);
  border-radius: 18px;
  background: rgba(15,23,42,.55);
  box-shadow: 0 10px 24px rgba(0,0,0,.3);
  animation: alienTeamMemberIn .65s cubic-bezier(.2,1.25,.4,1) both;
}
.alien-team-member img {
  width: min(100%, 180px);
  height: 205px;
  object-fit: contain;
}
.alien-team-member.body-short img {
  width: min(145%, 255px);
  transform: scale(1.25);
  filter: brightness(1.25) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55));
}
.alien-team-member.body-short img.critter-color-green { filter: sepia(.75) saturate(4.5) hue-rotate(55deg) brightness(1.25) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-short img.critter-color-pink { filter: sepia(.7) saturate(5.5) hue-rotate(285deg) brightness(1.3) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-short img.critter-color-blue { filter: sepia(.8) saturate(5) hue-rotate(155deg) brightness(1.25) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-short img.critter-color-yellow { filter: sepia(.8) saturate(5) hue-rotate(2deg) brightness(1.3) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-short img.critter-color-purple { filter: sepia(.8) saturate(5) hue-rotate(215deg) brightness(1.2) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-blob img.critter-color-green { filter: invert(1) sepia(.75) saturate(4.5) hue-rotate(55deg) brightness(1.1) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-blob img.critter-color-pink { filter: invert(1) sepia(.75) saturate(5.5) hue-rotate(285deg) brightness(1.15) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-blob img.critter-color-blue { filter: invert(1) sepia(.8) saturate(5) hue-rotate(155deg) brightness(1.1) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-blob img.critter-color-yellow { filter: invert(1) sepia(.8) saturate(5) hue-rotate(2deg) brightness(1.15) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-blob img.critter-color-purple { filter: invert(1) sepia(.8) saturate(5) hue-rotate(215deg) brightness(1.05) drop-shadow(0 0 5px #fff) drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member.body-short img.alien-exact-color,
.alien-team-member.body-blob img.alien-exact-color { filter: drop-shadow(0 10px 14px rgba(0,0,0,.55)); }
.alien-team-member strong,
.alien-team-member span {
  position: relative;
  z-index: 2;
  max-width: 100%;
  overflow-wrap: anywhere;
  text-align: center;
}
.alien-team-member strong {
  margin-top: 4px;
  padding: 5px 10px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
}
.alien-team-member span {
  margin-top: 5px;
  color: #fff;
  font-size: .76rem;
  font-weight: 1000;
}
.alien-team-member.is-active {
  border-color: #ffe36e;
  box-shadow: 0 0 30px #ffe36e;
}
.alien-team-member.power-bounce img { animation: alienTeamBounce .65s ease-in-out 4; }
.alien-team-member.power-float img { animation: alienTeamFloat 1.15s ease-in-out 3; }
.alien-team-member.power-dance img { animation: alienTeamDance .55s ease-in-out 6; }
.alien-team-member.power-glow img { animation: critterTeamGlow .65s ease-in-out 5; }
.alien-team-member.power-stretch img { animation: critterTeamStretch .65s ease-in-out 4; }
@keyframes critterTeamGlow { 50% { filter: drop-shadow(0 0 30px #fff) brightness(1.75); transform: scale(1.08); } }
@keyframes critterTeamStretch { 50% { transform: scale(.72, 1.35); } }
@keyframes alienTeamMemberIn { from { opacity: 0; transform: translateY(45px) scale(.4); } to { opacity: 1; transform: translateY(0) scale(1); } }
@keyframes alienTeamBounce { 50% { transform: translateY(-42px) rotate(5deg); } }
@keyframes alienTeamFloat { 50% { transform: translateY(-34px) rotate(4deg); } }
@keyframes alienTeamDance { 25% { transform: rotate(-9deg) translateY(-8px); } 75% { transform: rotate(9deg) translateY(-8px); } }

@media (max-width: 980px) {
  .alien-team-control-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .alien-team-workbench { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .alien-team-control-grid,
  .alien-team-stage { grid-template-columns: minmax(0, 1fr); }
  .alien-team-add-row { align-items: stretch; flex-direction: column; }
  .alien-team-stage { min-height: 500px; }
  .alien-team-member { min-height: 260px; }
}

/* === OOP lesson 1 challenge: Alien Rescue === */
.alien-rescue-game {
  display: grid;
  grid-template-columns: minmax(0, .85fr) minmax(480px, 1.15fr);
  gap: 20px;
  align-items: start;
}
.alien-rescue-controls,
.alien-rescue-output { min-width: 0; }
.alien-rescue-progress {
  width: max-content;
  margin: 8px 0 12px;
  padding: 6px 12px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: #e5f4ff;
  font-weight: 1000;
}
.alien-rescue-label {
  display: block;
  margin: 16px 0 7px;
}
.alien-rescue-choices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.alien-rescue-choices button {
  display: grid;
  gap: 2px;
  min-height: 62px;
  padding: 8px;
  border: 4px solid var(--ink);
  border-radius: 13px;
  background: #fff;
  color: var(--ink);
  font: 1000 1rem/1.1 "Nunito", sans-serif;
}
.alien-rescue-choices button span { font-size: .7rem; }
.alien-rescue-choices button.is-selected {
  background: var(--yellow);
  box-shadow: 4px 5px 0 var(--ink);
  transform: translate(-2px, -2px);
}
.method-choices button { min-height: 50px; background: #eafaff; }
.alien-rescue-code {
  margin: 16px 0 12px;
  padding: 14px;
  overflow-wrap: anywhere;
  border: 4px solid var(--ink);
  border-radius: 13px;
  background: #101827;
  color: #bbf7d0;
  font: 900 1.15rem/1.3 monospace;
  text-align: center;
}
.alien-rescue-stage {
  position: relative;
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 500px;
  overflow: hidden;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: linear-gradient(rgba(8,15,29,.2), rgba(8,15,29,.42)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}
.alien-rescue-obstacle {
  position: relative;
  z-index: 4;
  justify-self: center;
  margin-top: 16px;
  padding: 8px 16px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #151a31;
  color: #fff;
  font-weight: 1000;
}
.alien-rescue-crew {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: end;
  gap: 6px;
  padding: 20px 14px 28px;
}
.alien-rescue-alien {
  display: grid;
  justify-items: center;
  align-content: end;
  min-width: 0;
  min-height: 300px;
  padding: 8px;
  border: 4px solid rgba(255,255,255,.5);
  border-radius: 18px;
  background: rgba(15,23,42,.52);
}
.alien-rescue-alien img {
  width: min(100%, 165px);
  height: 205px;
  object-fit: contain;
}
.alien-rescue-alien strong {
  padding: 5px 10px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
}
.alien-rescue-alien.is-active { border-color: #ffe36e; box-shadow: 0 0 32px #ffe36e; }
.alien-rescue-alien.power-bounce img { animation: alienTeamBounce .65s ease-in-out 4; }
.alien-rescue-alien.power-glow img { animation: critterTeamGlow .65s ease-in-out 5; }
.alien-rescue-alien.power-float img { animation: alienTeamFloat 1.15s ease-in-out 3; }
.alien-rescue-stage.is-wrong { animation: alienShake .12s linear 6; }
.alien-rescue-success {
  position: absolute;
  z-index: 8;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  width: max-content;
  max-width: 82%;
  padding: 12px 18px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--yellow);
  box-shadow: 6px 7px 0 var(--ink);
  font: 1000 clamp(1.4rem, 4vw, 2.3rem)/1 "Fredoka", sans-serif;
  text-align: center;
  animation: basketballWinPop .5s cubic-bezier(.2,1.4,.4,1) both;
}
@media (max-width: 920px) {
  .alien-rescue-game { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .alien-rescue-choices,
  .alien-rescue-crew { grid-template-columns: minmax(0, 1fr); }
  .alien-rescue-stage { min-height: 720px; }
  .alien-rescue-alien { min-height: 210px; }
}

/* === OOP lesson 2: Methods Change State === */
.state-concept-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}
.state-concept-strip > div {
  display: grid;
  gap: 3px;
  padding: 12px 14px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fff;
}
.state-concept-strip strong { font-size: 1.1rem; }
.state-concept-strip span { font-weight: 800; }
.alien-state-lab {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(470px, 1.1fr);
  gap: 20px;
  align-items: start;
}
.alien-state-code-panel,
.alien-state-output { min-width: 0; }
.alien-state-code pre {
  min-height: 310px;
  max-height: 350px;
  font-size: .82rem;
}
.alien-state-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0;
}
.alien-state-actions button {
  min-height: 56px;
  padding: 8px;
  border: 4px solid var(--ink);
  border-radius: 13px;
  background: #eafaff;
  color: var(--ink);
  font: 1000 .9rem/1.1 monospace;
}
.alien-state-actions button:hover { background: var(--yellow); }
.alien-state-stage {
  position: relative;
  display: grid;
  justify-items: center;
  align-content: end;
  min-height: 480px;
  overflow: hidden;
  padding: 85px 24px 24px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: linear-gradient(rgba(8,15,29,.1), rgba(8,15,29,.35)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}
.alien-state-stage #alienStateImage {
  width: min(55%, 280px);
  height: 280px;
  object-fit: contain;
}
.alien-state-snack {
  position: absolute;
  z-index: 6;
  top: 95px;
  right: 12%;
  width: 130px;
  height: 130px;
  object-fit: contain;
  filter: drop-shadow(0 10px 10px rgba(0,0,0,.35));
  pointer-events: none;
}
.alien-state-snack.is-serving {
  display: block;
  animation: alienSnackServe 1.15s cubic-bezier(.2,.75,.3,1) both;
}
@keyframes alienSnackServe {
  0% { opacity: 0; transform: translate(100px, -35px) rotate(14deg) scale(.45); }
  18% { opacity: 1; transform: translate(30px, 0) rotate(-7deg) scale(1); }
  72% { opacity: 1; transform: translate(-315px, 65px) rotate(8deg) scale(.72); }
  100% { opacity: 0; transform: translate(-340px, 80px) rotate(0) scale(.2); }
}
.alien-energy-display {
  position: absolute;
  z-index: 4;
  top: 16px;
  left: 18px;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 14px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  font-family: monospace;
  font-weight: 1000;
}
.alien-energy-display strong { font-size: 1.8rem; }
.alien-energy-meter {
  position: absolute;
  z-index: 4;
  top: 22px;
  right: 18px;
  width: 48%;
  height: 34px;
  overflow: hidden;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #20283c;
}
.alien-energy-meter span {
  display: block;
  width: 60%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #22c55e, #b8f34a);
  transition: width .45s ease, background .3s ease;
}
.alien-state-effect {
  position: relative;
  z-index: 5;
  margin-top: -22px;
  padding: 7px 13px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  font-weight: 1000;
}
.alien-state-stage.action-play #alienStateImage { animation: alienTeamDance .55s ease-in-out 4; }
.alien-state-stage.action-snack #alienStateImage { animation: basketballWinPop .6s cubic-bezier(.2,1.4,.4,1) both; }
.alien-state-stage.action-recharge #alienStateImage { animation: critterTeamGlow .65s ease-in-out 4; }
.alien-state-stage.is-tired #alienStateImage { transform: scale(.86) translateY(18px); filter: saturate(.55) brightness(.8); }
.alien-state-goals {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}
.alien-state-goals span {
  padding: 8px;
  border: 3px dashed var(--ink);
  border-radius: 11px;
  background: #fff;
  text-align: center;
  font-size: .78rem;
  font-weight: 1000;
}
.alien-state-goals span.is-done { border-style: solid; background: #bbf7d0; }
@media (max-width: 900px) {
  .alien-state-lab { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .state-concept-strip,
  .alien-state-actions,
  .alien-state-goals { grid-template-columns: minmax(0, 1fr); }
  .alien-energy-meter { top: 70px; left: 18px; right: 18px; width: auto; }
  .alien-state-stage { padding-top: 120px; }
}

/* === OOP lesson 2 builder: Alien Routine === */
.compact-lesson-hero { margin-bottom: 16px; }

/* Real If / Then: Alien Chemistry entrance */
.alien-chem-hero{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(390px,.75fr);gap:24px;min-height:500px;overflow:hidden;padding:32px;background:linear-gradient(135deg,#fff8c8 0%,#e8ddff 52%,#c9f7ef 100%)}.alien-chem-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 12% 16%,rgba(255,255,255,.9) 0 4%,transparent 4.5%),radial-gradient(circle at 77% 13%,rgba(255,255,255,.55) 0 2%,transparent 2.5%),radial-gradient(circle at 92% 76%,rgba(255,255,255,.55) 0 3%,transparent 3.5%);pointer-events:none}.alien-chem-hero-copy{position:relative;z-index:2;align-self:center}.alien-chem-hero h1{max-width:760px;margin:.25em 0 .16em;font-size:clamp(2.7rem,5.3vw,5.8rem);line-height:.94}.alien-chem-hero-copy>p{max-width:700px;font-size:1.16rem;line-height:1.5}.alien-chem-hero-mission{display:grid;gap:2px;max-width:650px;margin:17px 0;padding:12px 15px;border:4px solid var(--ink);border-radius:14px;background:rgba(255,255,255,.82);box-shadow:var(--small-shadow)}.alien-chem-hero-mission strong{color:#7c3aed;font:1000 1rem/1 Fredoka,sans-serif}.alien-chem-hero-mission span{font-weight:900}.alien-enter-lab{display:inline-block;margin:0;text-decoration:none}.alien-chem-hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}.alien-chem-hero-tags span{padding:7px 11px;border:3px solid var(--ink);border-radius:999px;background:#fff;font-size:.76rem;font-weight:1000}.alien-chem-hero-scene{position:relative;z-index:1;align-self:stretch;min-height:420px;overflow:hidden;border:5px solid var(--ink);border-radius:25px;background:linear-gradient(rgba(13,9,42,.12),rgba(13,9,42,.35)),url("./assets/images/alien/alien_lab.png") center/cover;box-shadow:var(--small-shadow)}.alien-hero-tube{position:absolute;z-index:3;top:25px;width:31%;height:235px;object-fit:contain;filter:drop-shadow(0 0 14px #67e8f9)}.alien-hero-tube-left{left:3%;transform:rotate(-24deg);animation:alienHeroTubeLeft 2.6s ease-in-out infinite}.alien-hero-tube-right{right:3%;transform:scaleX(-1) rotate(-24deg);filter:drop-shadow(0 0 14px #f472b6);animation:alienHeroTubeRight 2.6s ease-in-out infinite}.alien-hero-vat{position:absolute;right:14%;bottom:5px;width:72%;height:245px;object-fit:contain;filter:drop-shadow(0 14px 8px rgba(0,0,0,.55));animation:alienHeroVat 2s ease-in-out infinite}.alien-hero-drop{position:absolute;z-index:2;top:145px;width:14px;height:120px;border-radius:999px;transform-origin:top;opacity:.85}.alien-hero-drop-left{left:31%;background:#43e2c0;box-shadow:0 0 15px #43e2c0;animation:alienHeroPour 1.2s ease-in infinite}.alien-hero-drop-right{right:31%;background:#f472b6;box-shadow:0 0 15px #f472b6;animation:alienHeroPour 1.2s .3s ease-in infinite}.alien-hero-mystery{position:absolute;z-index:4;right:22%;bottom:58px;display:grid;place-items:center;width:56%;text-align:center;color:#fff}.alien-hero-mystery span,.alien-hero-mystery b{padding:4px 9px;border-radius:999px;background:rgba(15,23,42,.88);font-size:.68rem}.alien-hero-mystery strong{font:1000 3.4rem/1 Fredoka,sans-serif;color:#fde047;text-shadow:0 4px 0 #7c3aed;animation:alienHeroQuestion 1.4s ease-in-out infinite}@keyframes alienHeroTubeLeft{50%{transform:rotate(-31deg) translateY(5px)}}@keyframes alienHeroTubeRight{50%{transform:scaleX(-1) rotate(-31deg) translateY(5px)}}@keyframes alienHeroPour{0%{transform:scaleY(.1);opacity:0}35%{opacity:1}100%{transform:scaleY(1);opacity:0}}@keyframes alienHeroVat{50%{transform:translateY(-4px)}}@keyframes alienHeroQuestion{50%{transform:scale(1.18) rotate(4deg)}}
@media(max-width:1000px){.alien-chem-hero{grid-template-columns:1fr;min-height:auto}.alien-chem-hero-scene{min-height:430px}}@media(max-width:650px){.alien-chem-hero{padding:20px}.alien-chem-hero h1{font-size:2.7rem}.alien-chem-hero-scene{min-height:360px}.alien-hero-tube{height:190px}.alien-hero-vat{height:210px}.alien-hero-mystery{bottom:45px}}

/* Code Studio Level 3: Treasure Door Decision */
.cs3-hero{position:relative;display:grid;grid-template-columns:1fr minmax(320px,.58fr);gap:24px;min-height:330px;overflow:hidden;padding:28px;background:linear-gradient(135deg,#fff7c2,#e7ddff 58%,#c9f7ef)}.cs3-hero h1{margin:.2em 0 .12em;font-size:clamp(2.7rem,5vw,5.4rem);line-height:.95}.cs3-hero p{max-width:760px}.cs3-mission{max-width:750px;margin-top:16px;padding:11px 14px;border:4px solid var(--ink);border-radius:14px;background:rgba(255,255,255,.84);font-weight:900}.cs3-mission strong{color:#7c3aed}.cs3-hero-art{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:8px;min-height:250px;padding:15px;border:5px solid var(--ink);border-radius:22px;background:linear-gradient(rgba(13,9,42,.18),rgba(13,9,42,.48)),url("./assets/images/cave/cave.png") center/cover}.cs3-hero-art img{width:100%;height:190px;object-fit:contain;filter:drop-shadow(0 9px 7px rgba(0,0,0,.55));animation:cs3HeroFloat 2.2s ease-in-out infinite}.cs3-hero-art img:last-child{animation-delay:.35s}.cs3-hero-art span{display:grid;place-items:center;width:58px;height:58px;border:4px solid var(--ink);border-radius:50%;background:var(--yellow);font-weight:1000}@keyframes cs3HeroFloat{50%{transform:translateY(-8px)}}
.cs3-quick-explain{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:15px 0}.cs3-quick-explain article{display:grid;gap:4px;padding:12px 14px;border:4px solid var(--ink);border-radius:14px;background:#fff}.cs3-quick-explain article:nth-child(2){background:#fff7c7}.cs3-quick-explain article:nth-child(3){background:#dcfce7}.cs3-quick-explain b{font:1000 .78rem/1 Fredoka,sans-serif;color:#7c3aed}.cs3-quick-explain span{font-weight:900}.cs3-app{display:grid;grid-template-columns:minmax(390px,.82fr) minmax(550px,1.18fr);gap:18px;align-items:start}.cs3-choice{display:grid;grid-template-columns:1fr 1fr;gap:9px;margin:12px 0}.cs3-choice button{display:grid;grid-template-columns:62px 1fr;grid-template-rows:auto auto;gap:0 8px;align-items:center;padding:10px;border:4px solid var(--ink);border-radius:14px;background:#e0f2fe;text-align:left}.cs3-choice button:first-child{background:#dcfce7}.cs3-choice button.is-selected{box-shadow:0 0 0 6px var(--yellow);transform:translateY(-3px)}.cs3-choice img,.cs3-no-key{grid-row:1/3;width:58px;height:58px;object-fit:contain}.cs3-no-key{display:grid;place-items:center;border:4px solid var(--ink);border-radius:50%;background:#fecaca;font:1000 2.2rem/1 Fredoka,sans-serif}.cs3-choice strong{font:1000 1.15rem/1 Fredoka,sans-serif}.cs3-choice span{font-weight:900}.cs3-code{min-height:180px;margin:12px 0;padding:15px;border:5px solid var(--ink);border-radius:15px;background:#101827;color:#bbf7d0;white-space:pre-wrap;line-height:1.45}.cs3-controls>.secondary-button{margin:4px 5px 4px 0}.cs3-stage{position:relative;min-height:490px;overflow:hidden;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(rgba(7,10,24,.08),rgba(7,10,24,.42)),url("./assets/images/cave/cave.png") center/cover}.cs3-door{position:absolute;right:7%;bottom:55px;width:64%;height:370px;object-fit:contain;filter:drop-shadow(0 14px 8px rgba(0,0,0,.55))}.cs3-key{position:absolute;top:105px;left:5%;z-index:3;width:30%;height:190px;object-fit:contain;opacity:.25;filter:grayscale(1) drop-shadow(0 8px 6px rgba(0,0,0,.4));transition:.35s}.cs3-stage.has-key .cs3-key{opacity:1;filter:drop-shadow(0 0 20px #fde047);animation:cs3KeyGlow 1s ease-in-out infinite}.cs3-stage.is-opening .cs3-key{animation:cs3Unlock .85s ease-in forwards}.cs3-stage.is-locked .cs3-door{animation:cs3DoorReject .3s ease-in-out 2}.cs3-result{position:absolute;right:3%;bottom:12px;left:3%;z-index:4;padding:10px;border:4px solid var(--ink);border-radius:999px;background:var(--yellow);text-align:center;font-weight:1000}@keyframes cs3KeyGlow{50%{transform:scale(1.08)}}@keyframes cs3Unlock{100%{transform:translate(130%,45%) rotate(80deg) scale(.45);opacity:0}}@keyframes cs3DoorReject{25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}.cs3-tests{display:grid;grid-template-columns:1fr 1fr;gap:7px;margin-top:9px}.cs3-tests span{padding:8px;border:3px dashed var(--ink);border-radius:9px;text-align:center;font-weight:1000}.cs3-tests span.is-done{border-style:solid;background:#bbf7d0}
@media(max-width:1000px){.cs3-hero,.cs3-app{grid-template-columns:1fr}}@media(max-width:700px){.cs3-quick-explain{grid-template-columns:1fr}.cs3-choice{grid-template-columns:1fr}.cs3-stage{min-height:420px}.cs3-door{right:0;width:80%;height:320px}.cs3-key{top:90px;width:34%;height:150px}}

/* Code Studio Level 3 Builder: Shield Score Rule */
.cs3-builder-hero{display:grid;grid-template-columns:1fr 360px;gap:20px;min-height:285px;padding:28px;background:linear-gradient(135deg,#fff7c2,#dff7ff 58%,#e9ddff)}.cs3-builder-hero h1{margin:.2em 0 .12em;font-size:clamp(2.7rem,5vw,5rem);line-height:.95}.cs3-builder-hero-art{display:grid;grid-template-columns:1fr;place-items:center;padding:12px;border:5px solid var(--ink);border-radius:20px;background:linear-gradient(rgba(255,255,255,.55),rgba(255,255,255,.25)),url("./assets/images/alien/grassy_knoll.png") center/cover}.cs3-builder-hero-art img{width:190px;height:175px;object-fit:contain;filter:drop-shadow(0 10px 8px rgba(0,0,0,.35));animation:cs3ShieldFloat 2s ease-in-out infinite}.cs3-builder-hero-art strong{padding:7px 13px;border:4px solid var(--ink);border-radius:999px;background:var(--yellow);font:1000 1.05rem/1 Fredoka,sans-serif}@keyframes cs3ShieldFloat{50%{transform:translateY(-8px)}}.cs3-builder-explain{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:14px 0}.cs3-builder-explain span{display:grid;gap:4px;padding:11px 13px;border:4px solid var(--ink);border-radius:13px;background:#fff}.cs3-builder-explain span:nth-child(2){background:#fff7c7}.cs3-builder-explain span:nth-child(3){background:#dcfce7}.cs3-builder-explain b{color:#7c3aed;font-size:.7rem}.cs3-builder-explain code{font-weight:1000}.cs3-builder-app{display:grid;grid-template-columns:minmax(420px,.9fr) minmax(530px,1.1fr);gap:18px;align-items:start}.cs3-builder-parts{display:grid;gap:10px;margin:12px 0}.cs3-builder-parts fieldset{display:grid;grid-template-columns:repeat(3,1fr);gap:7px;padding:10px;border:4px solid var(--ink);border-radius:13px;background:#f8fafc}.cs3-builder-parts fieldset:first-child{grid-template-columns:repeat(2,1fr)}.cs3-builder-parts legend{padding:0 7px;font-weight:1000}.cs3-builder-parts button{padding:9px;border:3px solid var(--ink);border-radius:9px;background:#e0f2fe;font-family:monospace;font-weight:1000}.cs3-builder-parts button.is-selected{background:var(--yellow);box-shadow:0 0 0 4px #bbf7d0;transform:translateY(-2px)}.cs3-builder-parts button.is-wrong{background:#fecaca}.cs3-builder-code{margin:12px 0;padding:15px;border:5px solid var(--ink);border-radius:15px;background:#101827;color:#bbf7d0;white-space:pre-wrap;line-height:1.5}.cs3-builder-code span{color:#fde047;font-weight:1000}.cs3-builder-stage{position:relative;min-height:455px;overflow:hidden;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(rgba(7,10,24,.04),rgba(7,10,24,.25)),url("./assets/images/alien/grassy_knoll.png") center/cover}.cs3-builder-stage>img{position:absolute;right:16%;bottom:58px;width:64%;height:335px;object-fit:contain;filter:grayscale(1) brightness(.7) drop-shadow(0 12px 8px rgba(0,0,0,.4));transition:.45s}.cs3-builder-stage.is-unlocked>img{filter:drop-shadow(0 0 25px #67e8f9);animation:cs3ShieldUnlock .7s ease-in-out 2}.cs3-builder-stage.is-rejected>img{animation:cs3ShieldReject .3s ease-in-out 2}.cs3-score-board{position:absolute;top:15px;left:15px;z-index:4;display:grid;padding:8px 13px;border:4px solid var(--ink);border-radius:13px;background:#101827;color:#fff;font-size:.72rem;font-weight:1000}.cs3-score-board strong{color:#fde047;font-size:1.5rem}.cs3-shield-lock{position:absolute;top:38%;left:50%;z-index:4;transform:translate(-50%,-50%);padding:8px 13px;border:4px solid var(--ink);border-radius:999px;background:#fecaca;font-weight:1000}.cs3-builder-stage.is-unlocked .cs3-shield-lock{background:#bbf7d0}.cs3-builder-result{position:absolute;right:3%;bottom:12px;left:3%;z-index:4;padding:9px;border:4px solid var(--ink);border-radius:999px;background:#fff;text-align:center;font-weight:1000}@keyframes cs3ShieldUnlock{50%{transform:translateY(-12px) scale(1.06)}}@keyframes cs3ShieldReject{25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}.cs3-score-tests{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:9px}.cs3-score-tests button{padding:10px;border:4px solid var(--ink);border-radius:11px;background:#bbf7d0;font-weight:1000}.cs3-score-tests button:disabled{opacity:.45;cursor:not-allowed}.cs3-builder-goals{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-top:8px}.cs3-builder-goals span{padding:7px;border:3px dashed var(--ink);border-radius:8px;text-align:center;font-size:.7rem;font-weight:1000}.cs3-builder-goals span.is-done{border-style:solid;background:#bbf7d0}
@media(max-width:1000px){.cs3-builder-hero,.cs3-builder-app{grid-template-columns:1fr}}@media(max-width:700px){.cs3-builder-explain{grid-template-columns:1fr}.cs3-builder-parts fieldset,.cs3-builder-parts fieldset:first-child{grid-template-columns:1fr}.cs3-builder-stage{min-height:405px}.cs3-builder-stage>img{right:7%;width:82%;height:300px}}

.cs3-builder-missions{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin:14px 0}.cs3-builder-missions span{padding:11px;border:4px solid var(--ink);border-radius:13px;background:#fff;text-align:center;font-weight:1000}.cs3-builder-missions span.is-current{background:var(--yellow);transform:translateY(-3px)}.cs3-builder-missions span.is-done{background:#bbf7d0}.cs3-builder-controls>p{margin:3px 0 8px;font-weight:900}.cs3-builder-stage.is-mission-success>img{filter:drop-shadow(0 0 28px #fde047);animation:cs3ShieldUnlock .7s ease-in-out 2}.cs3-builder-stage.is-mission-success .cs3-shield-lock{background:#bbf7d0}.cs3-builder-parts fieldset:first-child{grid-template-columns:repeat(3,1fr)}@media(max-width:700px){.cs3-builder-missions{grid-template-columns:1fr}}
.state-builder-app {
  display: grid;
  grid-template-columns: minmax(390px, .82fr) minmax(500px, 1.18fr);
  gap: 20px;
  align-items: start;
}
.state-method-maker,
.state-builder-lab { min-width: 0; }
.state-method-options {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0;
}
.state-method-options button {
  display: grid;
  gap: 3px;
  min-height: 70px;
  padding: 10px 6px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #eafaff;
  color: var(--ink);
  font: inherit;
}
.state-method-options button strong { font: 1000 .95rem/1.1 monospace; }
.state-method-options button span { font-size: .75rem; font-weight: 1000; }
.state-method-options button:hover,
.state-method-options button.is-selected { background: var(--yellow); transform: translateY(-2px); }
.state-method-preview {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 58px;
  margin: 10px 0;
  padding: 10px 14px;
  border: 3px dashed var(--ink);
  border-radius: 13px;
  background: #fffbe2;
  font-weight: 1000;
}
.state-method-preview code { color: #12643a; font-size: .86rem; text-align: right; }
.state-builder-code {
  overflow: hidden;
  margin: 14px 0 10px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
}
.state-builder-code summary { padding: 10px 14px; cursor: pointer; font-weight: 1000; }
.state-builder-code pre {
  min-height: 195px;
  max-height: 255px;
  overflow: auto;
  margin: 0;
  padding: 13px 16px;
  border-top: 3px solid #31425a;
  white-space: pre-wrap;
  font-size: .78rem;
}
.state-builder-stage {
  position: relative;
  display: grid;
  justify-items: center;
  align-content: end;
  min-height: 400px;
  overflow: hidden;
  padding: 78px 20px 18px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: linear-gradient(rgba(8,15,29,.08), rgba(8,15,29,.32)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}
.state-next-step {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 8px 0 12px;
  padding: 10px 14px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: var(--yellow);
  box-shadow: 4px 5px 0 var(--ink);
  font-weight: 1000;
}
.state-next-step strong {
  flex: 0 0 auto;
  padding: 4px 8px;
  border-radius: 8px;
  background: var(--ink);
  color: #fff;
  font-size: .76rem;
}
.state-next-step.is-complete { background: #bbf7d0; }
.state-call-heading { margin: 12px 0 2px; font-size: 1rem; }
.state-builder-stage #stateBuilderAlien { width: min(48%, 235px); height: 235px; object-fit: contain; }
.state-builder-stage .alien-energy-display { top: 12px; left: 14px; }
.state-builder-stage .alien-energy-meter { top: 18px; right: 14px; }
.state-builder-stage.action-play #stateBuilderAlien { animation: alienTeamDance .55s ease-in-out 3; }
.state-builder-stage.action-snack #stateBuilderAlien { animation: basketballWinPop .6s cubic-bezier(.2,1.4,.4,1) both; }
.state-builder-stage.action-recharge #stateBuilderAlien { animation: critterTeamGlow .65s ease-in-out 3; }
.state-builder-stage.is-tired #stateBuilderAlien { transform: scale(.86) translateY(15px); filter: saturate(.55) brightness(.8); }
.state-builder-snack {
  position: absolute;
  z-index: 6;
  top: 82px;
  right: 10%;
  width: 115px;
  height: 115px;
  object-fit: contain;
  filter: drop-shadow(0 8px 9px rgba(0,0,0,.35));
}
.state-builder-snack.is-serving { display: block; animation: stateBuilderSnackServe 1.05s ease-in-out both; }
@keyframes stateBuilderSnackServe {
  0% { opacity: 0; transform: translate(80px,-25px) scale(.45); }
  20% { opacity: 1; transform: translate(15px,0) scale(1); }
  75% { opacity: 1; transform: translate(-260px,65px) scale(.7); }
  100% { opacity: 0; transform: translate(-285px,78px) scale(.18); }
}
.state-built-methods {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  min-height: 65px;
  margin-top: 10px;
}
.state-built-methods p { grid-column: 1 / -1; align-self: center; margin: 0; text-align: center; font-weight: 900; }
.state-built-methods button {
  min-height: 60px;
  padding: 8px;
  border: 4px solid var(--ink);
  border-radius: 13px;
  background: #b8f1d0;
  color: var(--ink);
  font: 1000 .86rem/1.15 monospace;
}
.state-built-methods button:hover { background: var(--yellow); transform: translateY(-2px); }
.state-built-methods button.is-next {
  background: var(--yellow);
  animation: stateNextPulse 1s ease-in-out infinite alternate;
}
@keyframes stateNextPulse {
  from { transform: translateY(0); box-shadow: 0 0 0 0 rgba(255,217,74,.2); }
  to { transform: translateY(-4px); box-shadow: 0 0 0 7px rgba(255,217,74,.35); }
}
@media (max-width: 960px) {
  .state-builder-app { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 620px) {
  .state-method-options,
  .state-built-methods { grid-template-columns: minmax(0, 1fr); }
  .state-builder-stage .alien-energy-meter { top: 65px; left: 14px; right: 14px; width: auto; }
  .state-builder-stage { padding-top: 115px; }
}

/* === OOP lesson 2 challenge: Alien Energy Rescue === */
.state-rescue-explanation {
  display: grid;
  grid-template-columns: 1.35fr repeat(3, minmax(0, .8fr));
  gap: 9px;
  margin-bottom: 16px;
  padding: 12px;
  border: 4px solid var(--ink);
  border-radius: 17px;
  background: #fff;
  box-shadow: 5px 6px 0 var(--ink);
}
.state-rescue-explanation > div {
  display: grid;
  align-content: center;
  gap: 3px;
  min-height: 62px;
  padding: 9px 11px;
  border-radius: 12px;
  background: #eafaff;
}
.state-rescue-explanation > div:first-child { background: #bbf7d0; }
.state-rescue-explanation strong { font-size: 1rem; }
.state-rescue-explanation p { margin: 0; font-weight: 850; }
.state-rescue-explanation code { color: #12643a; font-size: .9rem; font-weight: 1000; }
.state-rescue-explanation span { font-size: .76rem; font-weight: 900; }
.state-rescue-tip {
  grid-column: 1 / -1;
  padding: 7px 10px;
  border-radius: 9px;
  background: #fff7c7;
  text-align: center;
}
.state-rescue-app {
  display: grid;
  grid-template-columns: minmax(390px, .78fr) minmax(520px, 1.22fr);
  gap: 20px;
  align-items: start;
}
.state-rescue-controls,
.state-rescue-lab { min-width: 0; }
.state-rescue-story { min-height: 48px; font-size: 1.05rem; font-weight: 850; }
.state-rescue-target {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 10px;
  margin: 12px 0 18px;
  padding: 12px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fff7c7;
  text-align: center;
  font-weight: 1000;
}
.state-rescue-target span:nth-child(2) { font-size: 1.7rem; }
.state-rescue-target strong { display: block; font-size: 1.8rem; color: #12643a; }
.state-rescue-methods { display: grid; gap: 9px; }
.state-rescue-methods button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 62px;
  padding: 10px 14px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #eafaff;
  color: var(--ink);
  font: inherit;
}
.state-rescue-methods button:hover { background: var(--yellow); transform: translateX(4px); }
.state-rescue-methods button strong { font: 1000 .94rem/1 monospace; }
.state-rescue-methods button span { font-size: .82rem; font-weight: 1000; }
.state-rescue-methods button:disabled { opacity: .55; transform: none; }
.state-rescue-code {
  display: grid;
  gap: 6px;
  min-height: 74px;
  margin: 14px 0 10px;
  padding: 10px 13px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
}
.state-rescue-code span { font-size: .75rem; font-weight: 1000; }
.state-rescue-code code { white-space: normal; font-size: .9rem; }
.state-rescue-hud {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}
.state-rescue-hud div {
  display: grid;
  justify-items: center;
  padding: 8px;
  border: 4px solid var(--ink);
  border-radius: 13px;
  background: #eafaff;
  font-weight: 1000;
}
.state-rescue-hud span { font-size: .7rem; }
.state-rescue-hud strong { font-size: 1.65rem; color: #12643a; }
.state-mission-change {
  position: absolute;
  z-index: 20;
  top: 92px;
  left: 50%;
  width: min(520px, calc(100% - 48px));
  padding: 18px 20px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--yellow);
  box-shadow: 8px 9px 0 var(--ink);
  text-align: center;
  transform: translateX(-50%);
  animation: stateMissionCardIn .35s cubic-bezier(.2,1.35,.35,1) both;
}
.state-mission-change strong,
.state-mission-change span { display: block; }
.state-mission-change strong { margin-bottom: 5px; font-size: 1.35rem; }
.state-mission-change span { font-weight: 1000; }
@keyframes stateMissionCardIn {
  from { opacity: 0; transform: translate(-50%, -20px) scale(.88); }
  to { opacity: 1; transform: translate(-50%, 0) scale(1); }
}
.state-rescue-lab { position: relative; }
.state-rescue-stage {
  position: relative;
  display: grid;
  justify-items: center;
  align-content: end;
  min-height: 400px;
  overflow: hidden;
  padding: 50px 20px 22px;
  border: 5px solid var(--ink);
  border-radius: 20px;
  background: linear-gradient(rgba(8,15,29,.06), rgba(8,15,29,.3)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}
.state-rescue-stage #stateRescueAlien { width: min(48%, 245px); height: 245px; object-fit: contain; }
.state-rescue-result {
  position: relative;
  z-index: 7;
  margin-top: -18px;
  padding: 8px 15px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  font-weight: 1000;
}
.state-rescue-stage.action-play #stateRescueAlien { animation: alienTeamDance .55s ease-in-out 3; }
.state-rescue-stage.action-snack #stateRescueAlien { animation: basketballWinPop .6s cubic-bezier(.2,1.4,.4,1) both; }
.state-rescue-stage.action-recharge #stateRescueAlien { animation: critterTeamGlow .65s ease-in-out 3; }
.state-rescue-stage.is-tired #stateRescueAlien { transform: scale(.84) translateY(18px); filter: saturate(.55) brightness(.82); }
.state-rescue-stage.is-success { animation: stateRescueWin .65s ease-in-out 2; }
.state-rescue-stage.is-failure { animation: rescueShake .38s ease-in-out; }
@keyframes stateRescueWin { 50% { box-shadow: inset 0 0 75px 20px rgba(184,243,74,.65); } }
.state-rescue-snack {
  position: absolute;
  z-index: 6;
  top: 85px;
  right: 10%;
  width: 125px;
  height: 125px;
  object-fit: contain;
  filter: drop-shadow(0 8px 9px rgba(0,0,0,.35));
}
.state-rescue-snack.is-serving { display: block; animation: stateRescueSnackServe 1.05s ease-in-out both; }
@keyframes stateRescueSnackServe {
  0% { opacity: 0; transform: translate(90px,-30px) scale(.45); }
  20% { opacity: 1; transform: translate(15px,0) scale(1); }
  75% { opacity: 1; transform: translate(-315px,85px) scale(.72); }
  100% { opacity: 0; transform: translate(-340px,95px) scale(.18); }
}
.state-rescue-dots { display: flex; justify-content: center; gap: 10px; margin: 12px 0; }
.state-rescue-dots span { width: 22px; height: 22px; border: 4px solid var(--ink); border-radius: 50%; background: #fff; }
.state-rescue-dots span.is-current { background: var(--yellow); }
.state-rescue-dots span.is-done { background: #22c55e; }
@media (max-width: 960px) {
  .state-rescue-app { grid-template-columns: minmax(0, 1fr); }
  .state-rescue-explanation { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .state-rescue-explanation > div:first-child { grid-column: 1 / -1; }
}
@media (max-width: 620px) {
  .state-rescue-hud,
  .state-rescue-explanation { grid-template-columns: minmax(0, 1fr); }
  .state-rescue-explanation > div:first-child,
  .state-rescue-tip { grid-column: auto; }
}

/* === OOP lesson 3: Robo-Pet Object Collections === */
.pet-collection-guide {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.pet-collection-guide > div {
  display: grid;
  gap: 2px;
  padding: 10px 14px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fff;
}
.pet-collection-guide strong { font-size: 1.05rem; }
.pet-collection-guide span { font-weight: 850; }
.pet-lesson-explanation {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
  padding: 11px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fff7c7;
  box-shadow: 5px 6px 0 var(--ink);
}
.pet-lesson-explanation > div {
  padding: 9px 11px;
  border-radius: 11px;
  background: #fff;
}
.pet-lesson-explanation strong { color: #12643a; }
.pet-lesson-explanation p { margin: 4px 0 0; font-weight: 800; line-height: 1.35; }
.pet-lesson-explanation code { font-weight: 1000; }
.pet-collection-app {
  display: grid;
  grid-template-columns: minmax(390px, .78fr) minmax(540px, 1.22fr);
  gap: 20px;
  align-items: start;
}
.pet-code-panel,
.pet-kennel-panel { min-width: 0; }
.pet-array-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 12px;
  border: 4px solid var(--ink);
  border-radius: 13px 13px 0 0;
  background: var(--yellow);
  font-weight: 1000;
}
.pet-collection-code {
  min-height: 225px;
  max-height: 270px;
  overflow: auto;
  margin: 0;
  padding: 14px 16px;
  border: 4px solid var(--ink);
  border-top: 0;
  border-radius: 0 0 13px 13px;
  background: #101827;
  color: #bbf7d0;
  white-space: pre-wrap;
  font-size: .8rem;
}
.pet-loop-explanation {
  display: grid;
  gap: 2px;
  margin: 10px 0;
  padding: 9px 12px;
  border: 3px dashed var(--ink);
  border-radius: 12px;
  background: #eefcff;
}
.pet-next-command {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 9px 0;
  padding: 9px 11px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: var(--yellow);
  font-weight: 1000;
}
.pet-next-command strong {
  flex: 0 0 auto;
  padding: 4px 7px;
  border-radius: 7px;
  background: var(--ink);
  color: #fff;
  font-size: .7rem;
}
.pet-next-command.is-complete { background: #bbf7d0; }
.pet-command-picker { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 7px; margin: 7px 0 12px; }
.pet-command-picker button {
  display: grid;
  gap: 3px;
  min-height: 62px;
  padding: 8px 5px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: #eafaff;
  color: var(--ink);
  font: inherit;
}
.pet-command-picker button strong { font: 1000 .82rem/1 monospace; }
.pet-command-picker button span { font-size: .7rem; font-weight: 900; }
.pet-command-picker button:hover,
.pet-command-picker button.is-selected { background: var(--yellow); transform: translateY(-2px); }
.pet-command-picker button.is-next {
  background: var(--yellow);
  animation: stateNextPulse 1s ease-in-out infinite alternate;
}
.pet-array-track {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  min-height: 350px;
  padding: 30px 18px 18px;
  overflow: hidden;
  border: 5px solid var(--ink);
  border-radius: 19px;
  background: linear-gradient(rgba(7,18,33,.08),rgba(7,18,33,.35)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}
.pet-array-card {
  position: relative;
  display: grid;
  justify-items: center;
  align-content: end;
  min-width: 0;
  padding: 12px 8px;
  border: 4px solid rgba(255,255,255,.8);
  border-radius: 16px;
  background: rgba(8,18,32,.62);
  color: #fff;
  transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.pet-array-card img { width: 100%; height: 205px; object-fit: contain; }
.pet-array-card strong { font-size: 1.1rem; }
.pet-array-card > span:last-child { font-size: .8rem; font-weight: 900; }
.pet-index {
  position: absolute;
  top: 8px;
  left: 8px;
  padding: 4px 7px;
  border-radius: 8px;
  background: var(--yellow);
  color: var(--ink);
  font: 1000 .72rem/1 monospace;
}
.pet-array-card.is-active { z-index: 3; transform: translateY(-8px) scale(1.04); background: rgba(18,100,58,.78); box-shadow: 0 0 0 7px rgba(184,243,74,.4); }
.pet-array-card.command-report img { animation: basketballWinPop .5s cubic-bezier(.2,1.4,.4,1) both; }
.pet-array-card.command-dance img { animation: alienTeamDance .5s ease-in-out 3; }
.pet-array-card.command-powerUp img { animation: critterTeamGlow .55s ease-in-out 3; }
.pet-array-card.command-eatSnack img { animation: basketballWinPop .55s cubic-bezier(.2,1.4,.4,1) both; }
.pet-snack-pop {
  position: absolute;
  z-index: 8;
  top: 36%;
  right: 8%;
  width: 78px !important;
  height: 78px !important;
  object-fit: contain;
  pointer-events: none;
  animation: petSnackPop .9s ease-in-out both;
}
@keyframes petSnackPop {
  0% { opacity: 0; transform: translate(45px,-25px) scale(.4); }
  35% { opacity: 1; transform: translate(0,0) scale(1); }
  100% { opacity: 0; transform: translate(-55px,35px) scale(.2); }
}
.pet-array-card.parade-pet img { animation: alienTeamDance .48s ease-in-out infinite alternate; }
.pet-array-card:nth-child(2).parade-pet img { animation-delay: .15s; }
.pet-array-card:nth-child(3).parade-pet img { animation-delay: .3s; }
.pet-loop-cursor {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin: 10px 0;
  padding: 8px 12px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #fff7c7;
  font-family: monospace;
  font-weight: 1000;
}
.pet-loop-cursor strong { color: #12643a; }
.pet-roll-call-log {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 7px;
  min-height: 55px;
  margin-bottom: 10px;
}
.pet-roll-call-log p { grid-column: 1 / -1; align-self: center; margin: 0; text-align: center; font-weight: 900; }
.pet-roll-call-log span {
  padding: 7px;
  border: 3px solid var(--ink);
  border-radius: 10px;
  background: #bbf7d0;
  text-align: center;
  font-size: .74rem;
  font-weight: 1000;
}
.pet-parade-button { margin: 8px 0; background: var(--yellow); }
@media (max-width: 980px) { .pet-collection-app { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 650px) {
  .pet-collection-guide,
  .pet-lesson-explanation,
  .pet-command-picker,
  .pet-array-track,
  .pet-roll-call-log { grid-template-columns: minmax(0, 1fr); }
  .pet-array-card img { height: 170px; }
}

/* === OOP lesson 3 builder: Launch Team Collection === */
.team-builder-explanation {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}
.team-builder-explanation > div {
  display: grid;
  gap: 3px;
  padding: 11px 14px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fff;
}
.team-builder-explanation strong { color: #12643a; }
.team-builder-explanation span { font-weight: 850; }
.team-builder-app { display: grid; grid-template-columns: minmax(420px,.9fr) minmax(520px,1.1fr); gap: 20px; align-items: start; }
.team-builder-controls,
.team-mission-panel { min-width: 0; }
.team-member-shelf { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 8px; margin: 10px 0; }
.team-member-shelf button {
  display: grid;
  justify-items: center;
  gap: 2px;
  overflow: hidden;
  padding: 6px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #eafaff;
  color: var(--ink);
  font: inherit;
}
.team-member-shelf img { width: 100%; aspect-ratio: 1; border-radius: 9px; object-fit: contain; }
.team-member-shelf strong { font-size: .95rem; }
.team-member-shelf span { font-size: .72rem; font-weight: 900; }
.team-member-shelf button:hover { transform: translateY(-3px); background: var(--yellow); }
.team-member-shelf button.is-added { background: #bbf7d0; opacity: .68; }
.team-member-shelf button.is-added::after { content: "ADDED ✓"; font-size: .72rem; font-weight: 1000; }
.team-next-step {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 10px 0;
  padding: 10px 12px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: var(--yellow);
  font-weight: 1000;
}
.team-next-step strong { padding: 4px 7px; border-radius: 7px; background: var(--ink); color: #fff; font-size: .7rem; }
.team-next-step.is-complete { background: #bbf7d0; }
.team-builder-code { overflow: hidden; margin: 10px 0; border: 4px solid var(--ink); border-radius: 14px; background: #101827; color: #bbf7d0; }
.team-builder-code summary { padding: 9px 13px; cursor: pointer; font-weight: 1000; }
.team-builder-code pre { min-height: 190px; max-height: 245px; overflow: auto; margin: 0; padding: 13px; border-top: 3px solid #31425a; white-space: pre-wrap; font-size: .76rem; }
.team-array-stage {
  display: grid;
  grid-template-columns: repeat(3,minmax(0,1fr));
  gap: 8px;
  min-height: 310px;
  padding: 14px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #172238;
}
.team-array-stage > p { grid-column: 1/-1; place-self: center; color: #bbf7d0; font: 1000 1rem/1 monospace; }
.team-array-object { position: relative; display: grid; justify-items: center; align-content: end; overflow: hidden; padding: 8px; border: 4px solid #fff; border-radius: 14px; background: #fff; transition: transform .25s, box-shadow .25s; }
.team-array-object img { width: 100%; aspect-ratio: 1; object-fit: contain; border-radius: 8px; transform-origin: center bottom; }
.team-array-object strong { font-size: .9rem; }
.team-array-object span { font-size: .7rem; font-weight: 900; }
.team-array-object .team-slot { position: absolute; top: 7px; left: 7px; padding: 4px 6px; border-radius: 7px; background: var(--yellow); font: 1000 .65rem/1 monospace; }
.team-array-object.is-active { transform: translateY(-6px) scale(1.03); box-shadow: 0 0 0 7px rgba(184,243,74,.5); }
.team-array-object.is-earning img { animation: critterTeamGlow .55s ease-in-out 2; }
.team-array-object.is-reporting img { animation: teamMemberReport .58s ease-in-out 2; }
@keyframes teamMemberReport {
  0%, 100% { transform: translateY(0) scale(1); }
  45% { transform: translateY(-7px) scale(1.04); }
  70% { transform: translateY(-3px) scale(.98); }
}
.team-loop-puzzle { margin: 12px 0; }
.team-loop-frame { padding: 9px 12px; border: 4px solid var(--ink); background: #101827; color: #bbf7d0; }
.team-loop-frame:first-child { border-radius: 12px 12px 0 0; }
.team-loop-frame:nth-last-child(2) { border-radius: 0 0 12px 12px; }
.team-loop-frame strong { display: block; margin-top: 4px; color: #fff; font-size: .82rem; }
.team-loop-choices { display: grid; gap: 6px; padding: 8px; border-inline: 4px solid var(--ink); background: #eefcff; }
.team-loop-choices button { padding: 9px; border: 3px solid var(--ink); border-radius: 10px; background: #fff; color: var(--ink); font: 1000 .84rem/1 monospace; }
.team-loop-choices button:hover,
.team-loop-choices button.is-selected { background: var(--yellow); }
.team-loop-choices button.is-wrong { background: #fecaca; }
.team-mission-log { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 6px; min-height: 48px; margin-top: 9px; }
.team-mission-log p { grid-column:1/-1; place-self:center; margin:0; font-weight:900; }
.team-mission-log span { padding:7px; border:3px solid var(--ink); border-radius:9px; background:#bbf7d0; text-align:center; font-size:.7rem; font-weight:1000; }
.team-builder-goals { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:7px; margin-top:9px; }
.team-builder-goals span { padding:7px; border:3px dashed var(--ink); border-radius:9px; text-align:center; font-size:.72rem; font-weight:1000; }
.team-builder-goals span.is-done { border-style:solid; background:#bbf7d0; }
@media(max-width:980px){.team-builder-app{grid-template-columns:minmax(0,1fr)}}
@media(max-width:650px){.team-builder-explanation,.team-member-shelf,.team-array-stage,.team-mission-log,.team-builder-goals{grid-template-columns:minmax(0,1fr)}}

/* === OOP collections challenge and inheritance sequence === */
.oop-task-explanation,.inheritance-explanation{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px}.oop-task-explanation>div,.inheritance-explanation>div{padding:12px 14px;border:4px solid var(--ink);border-radius:14px;background:#fff}.oop-task-explanation strong,.inheritance-explanation strong{color:#12643a}.oop-task-explanation p,.inheritance-explanation p{margin:4px 0 0;font-weight:800;line-height:1.35}.collection-drop-app,.inheritance-lab,.inherit-builder-app{display:grid;grid-template-columns:minmax(400px,.85fr) minmax(520px,1.15fr);gap:20px;align-items:start}.challenge-code-frame{overflow:hidden;margin:12px 0;border:4px solid var(--ink);border-radius:14px;background:#101827;color:#bbf7d0}.challenge-code-frame>code{display:block;padding:12px 14px}.challenge-code-frame>div{display:grid;gap:7px;padding:9px;background:#eefcff}.challenge-code-frame button{padding:10px;border:3px solid var(--ink);border-radius:9px;background:#fff;color:var(--ink);font:1000 .88rem/1 monospace}.challenge-code-frame button.is-selected{background:var(--yellow)}.challenge-code-frame button.is-wrong{background:#fecaca}.oop-image-slot-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;padding:14px;border:5px solid var(--ink);border-radius:18px;background:#172238}.oop-image-slot-row>div{display:grid;gap:6px;padding:9px;border:4px solid #fff;border-radius:13px;background:#fff;text-align:center;transition:.25s}.oop-image-slot-row>div>span{font:1000 .7rem/1 monospace}.oop-image-slot-row>div.is-active{transform:translateY(-7px);box-shadow:0 0 0 7px rgba(184,243,74,.5);background:#bbf7d0}.oop-image-placeholder{display:grid;place-content:center;gap:4px;min-height:170px;padding:12px;border:4px dashed #64748b;border-radius:12px;background:linear-gradient(135deg,#eefcff,#f3e8ff);color:var(--ink);text-align:center}.oop-image-placeholder small{font-size:.66rem}.challenge-status{margin:10px 0;padding:9px;border:4px solid var(--ink);border-radius:999px;background:var(--yellow);text-align:center;font-weight:1000}.inheritance-tree{display:grid;justify-items:center}.inherit-parent,.inherit-builder-parent{display:grid;justify-items:center;gap:5px;width:min(280px,100%);padding:12px;border:5px solid var(--ink);border-radius:17px;background:#eafaff}.inherit-parent .oop-image-placeholder,.inherit-builder-parent .oop-image-placeholder{width:100%;min-height:145px}.inherit-line{width:6px;height:45px;background:var(--ink);position:relative}.inherit-line:after{content:"";position:absolute;bottom:0;left:50%;width:280px;height:5px;background:var(--ink);transform:translateX(-50%)}.inherit-children,.inherit-builder-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;width:100%}.inherit-children button,.inherit-builder-options button{display:grid;justify-items:center;gap:5px;padding:10px;border:4px solid var(--ink);border-radius:15px;background:#fff;color:var(--ink);font:inherit}.inherit-children button:hover,.inherit-children button.is-selected,.inherit-builder-options button:hover,.inherit-builder-options button.is-added{background:var(--yellow);transform:translateY(-3px)}.inherit-children .oop-image-placeholder,.inherit-builder-options .oop-image-placeholder{width:100%;min-height:170px}.inheritance-test-card{margin:10px 0}.inheritance-test-card .oop-image-placeholder{min-height:310px}.inheritance-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.inheritance-actions button{display:grid;gap:3px;padding:11px;border:4px solid var(--ink);border-radius:12px;background:#bbf7d0;color:var(--ink);font:1000 .88rem/1.1 monospace}.inheritance-actions span{font:900 .7rem/1 Nunito}.inheritance-live-code{min-height:90px;margin:10px 0;padding:12px;border:4px solid var(--ink);border-radius:12px;background:#101827;color:#bbf7d0;white-space:pre-wrap}.inheritance-test-card.is-acting{animation:inheritAct .55s ease-in-out 2}@keyframes inheritAct{50%{transform:translateY(-6px) scale(1.02);filter:drop-shadow(0 0 12px #b8f34a)}}.inherit-builder-parent{margin:0 auto 20px}.inherit-builder-stage{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;min-height:390px;padding:14px;border:5px solid var(--ink);border-radius:18px;background:#172238}.inherit-builder-stage>p{grid-column:1/-1;place-self:center;color:#bbf7d0;font-weight:1000}.inherit-child-card{display:grid;justify-items:center;align-content:end;gap:5px;padding:10px;border:4px solid #fff;border-radius:14px;background:#fff;text-align:center}.inherit-child-card .oop-image-placeholder{width:100%;min-height:190px}.inherit-child-actions{display:grid;grid-template-columns:1fr;gap:6px;width:100%}.inherit-child-actions button{padding:8px;border:3px solid var(--ink);border-radius:9px;background:#bbf7d0;color:var(--ink);font:1000 .72rem/1 monospace}.inherit-child-card.is-acting{animation:inheritAct .5s ease-in-out 2}.inherit-builder-goals{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-top:10px}.inherit-builder-goals span{padding:8px;border:3px dashed var(--ink);border-radius:9px;text-align:center;font-size:.72rem;font-weight:1000}.inherit-builder-goals span.is-done{border-style:solid;background:#bbf7d0}@media(max-width:950px){.collection-drop-app,.inheritance-lab,.inherit-builder-app{grid-template-columns:1fr}}@media(max-width:650px){.oop-task-explanation,.inheritance-explanation,.oop-image-slot-row,.inherit-children,.inherit-builder-options,.inherit-builder-stage,.inherit-builder-goals{grid-template-columns:1fr}.inherit-line:after{width:150px}}

/* Collection Challenge power-up art */
#collectionDropStage{position:relative;overflow:hidden;min-height:390px;align-items:end;background-image:linear-gradient(rgba(20,40,64,.08),rgba(20,40,64,.18)),url("./assets/images/alien/grassy_knoll.png");background-position:center;background-size:cover}
#collectionDropStage>div{background:rgba(255,255,255,.7);backdrop-filter:blur(1px);box-shadow:0 8px 18px rgba(15,23,42,.25)}
.oop-image-slot-row>div>img{width:100%;height:210px;object-fit:contain;filter:drop-shadow(0 10px 10px rgba(0,0,0,.25))}
.oop-image-slot-row>div.is-active>img{animation:powerUpActivate .65s ease-in-out 2}
@keyframes powerUpActivate{0%,100%{transform:scale(1) rotate(0);filter:drop-shadow(0 8px 8px rgba(0,0,0,.25))}50%{transform:scale(1.12) rotate(4deg);filter:drop-shadow(0 0 18px #ffd94a) brightness(1.2)}}

/* Inheritance: Wizard Spell Academy */
.inheritance-purpose{margin-bottom:14px;padding:15px 18px;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(100deg,#fff7c7,#e8ddff);box-shadow:var(--small-shadow)}
.inheritance-purpose>strong{font:1000 1.25rem/1 Fredoka,sans-serif}.inheritance-purpose>p{margin:5px 0 12px;font-weight:800}.inheritance-purpose>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.inheritance-purpose span{padding:9px;border:3px solid var(--ink);border-radius:11px;background:rgba(255,255,255,.74);text-align:center;font-weight:900}
.inheritance-when-used{display:grid;grid-template-columns:minmax(300px,.9fr) minmax(480px,1.1fr);gap:14px;margin-bottom:16px;padding:16px 18px;border:5px solid var(--ink);border-radius:18px;background:#fff;box-shadow:var(--small-shadow)}
.inheritance-when-used h2{margin:8px 0 5px;font-size:1.35rem}.inheritance-when-used p{margin:0;font-weight:800;line-height:1.4}.inheritance-example-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.inheritance-example-grid>div{display:grid;align-content:center;gap:5px;padding:10px;border:3px solid var(--ink);border-radius:12px;background:linear-gradient(145deg,#eefcff,#f3e8ff);text-align:center}.inheritance-example-grid b{font-size:1.02rem}.inheritance-example-grid code{font-size:.7rem}.inheritance-example-grid strong{color:#6d28d9;font-size:.75rem}.inheritance-rule{grid-column:1/-1;padding:9px 12px;border-radius:10px;background:#fff7c7}
.inheritance-mission{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-bottom:12px}.inheritance-mission span{display:grid;grid-template-columns:30px 1fr;align-items:center;gap:6px;padding:8px;border:3px dashed #64748b;border-radius:11px;background:#f8fafc;font-size:.75rem;font-weight:1000}.inheritance-mission b{display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:#cbd5e1}.inheritance-mission span.is-done{border-style:solid;border-color:var(--ink);background:#bbf7d0}.inheritance-mission span.is-done b{background:var(--yellow)}
.magic-family-tree{min-height:590px;align-content:center}
.magic-parent-card{width:min(320px,100%);background:linear-gradient(135deg,#e0f2fe,#ede9fe)}
.magic-parent-card>img{width:115px;height:115px;object-fit:contain;filter:drop-shadow(0 0 12px #67e8f9)}
.magic-parent-card small{font-weight:900}
.magic-child-choice{grid-template-columns:repeat(3,minmax(0,1fr));width:100%}
.magic-child-choice button{background:linear-gradient(145deg,#fff,#f3e8ff)}
.magic-child-choice button>img{width:100%;height:190px;object-fit:contain;filter:drop-shadow(0 10px 8px rgba(20,33,61,.25))}
.magic-child-choice button>b{display:block;min-height:1.35em;font-size:1.05rem;line-height:1.15;text-align:center}
.magic-child-choice button>code{display:block;width:100%;max-width:100%;padding:2px 3px;font-size:clamp(.66rem,1.05vw,.82rem);line-height:1.25;white-space:normal;overflow-wrap:anywhere;text-align:center}
.magic-child-choice button.is-wrong{background:#fee2e2;animation:wrongCharacterShake .35s ease-in-out 2}@keyframes wrongCharacterShake{25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}
.magic-spell-stage{position:relative;overflow:hidden;min-height:420px;margin:10px 0;border:5px solid var(--ink);border-radius:20px;background:linear-gradient(rgba(25,34,70,.06),rgba(25,34,70,.18)),url("./assets/images/alien/grassy_knoll.png") center/cover}
.magic-spell-stage>p{position:absolute;left:50%;bottom:14px;z-index:4;width:max-content;max-width:90%;margin:0;padding:8px 14px;border:3px solid var(--ink);border-radius:999px;background:rgba(255,255,255,.86);transform:translateX(-50%);font-weight:1000;text-align:center}
.training-wizard{position:absolute;left:50%;bottom:35px;width:290px;height:340px;object-fit:contain;transform:translateX(-50%);filter:drop-shadow(0 12px 8px rgba(20,33,61,.3));transition:.25s}
.training-orb{position:absolute;left:calc(50% + 94px);top:38%;z-index:3;width:125px;height:125px;object-fit:contain;transform:translate(-50%,-50%) scale(.65);opacity:0;filter:drop-shadow(0 0 8px transparent);transition:opacity .25s,transform .35s,filter .35s}
.inherited-orb.is-charged{z-index:4;transform:translate(-50%,-50%) scale(.78);opacity:1;filter:drop-shadow(0 0 16px #22d3ee)}
.inherited-orb.is-replaced{transform:translate(-50%,-50%) scale(.55);opacity:0}
.special-orb.is-powered{z-index:5;transform:translate(-50%,-50%) scale(1.18);opacity:1;filter:drop-shadow(0 0 28px #e879f9)}
.training-wizard.is-introducing{animation:wizardIntroduce .8s ease-in-out 2}
.training-wizard.is-spellcasting{animation:wizardCast .8s ease-in-out 2}
.inherited-orb.is-casting{animation:inheritedMagic 1.15s ease-in-out 2}
.special-orb.is-casting{animation:specialMagic 1.05s ease-out 1 forwards}
.magic-method-actions button{grid-template-columns:54px 1fr;grid-template-rows:auto auto;text-align:left;align-items:center}
.magic-method-actions button>img{grid-row:1/3;width:50px;height:50px;object-fit:contain}
.magic-method-actions button>strong{font-size:.9rem}.magic-method-actions button>span{font-family:Nunito,sans-serif}
.magic-method-actions button.is-used{background:var(--yellow);box-shadow:0 0 0 4px #b8f34a}
@keyframes wizardIntroduce{50%{transform:translateX(-50%) translateY(-12px) scale(1.04);filter:drop-shadow(0 0 18px #67e8f9)}}
@keyframes wizardCast{50%{transform:translateX(-50%) rotate(-3deg) scale(1.06);filter:drop-shadow(0 0 22px #c084fc)}}
@keyframes inheritedMagic{0%,100%{transform:translate(-50%,-50%) scale(.78)}50%{transform:translate(-50%,-50%) scale(.94) rotate(180deg);filter:drop-shadow(0 0 25px #22d3ee)}}
@keyframes specialMagic{0%{transform:translate(-50%,-50%) scale(.75);opacity:1}55%{transform:translate(-50%,-50%) scale(1.7) rotate(180deg);opacity:1;filter:drop-shadow(0 0 42px #f0abfc)}100%{transform:translate(-50%,-50%) scale(2.15) rotate(300deg);opacity:0;filter:drop-shadow(0 0 55px #fff)}}
.spell-burst{position:absolute;left:calc(50% + 94px);top:38%;z-index:7;width:10px;height:10px;pointer-events:none}.spell-burst span{--spark-angle:0deg;--spark-distance:70px;position:absolute;inset:0;width:11px;height:11px;border-radius:50%;background:linear-gradient(135deg,#fff,#67e8f9 38%,#e879f9);box-shadow:0 0 12px #fff;animation:spellSpark 1s ease-out forwards}@keyframes spellSpark{0%{transform:rotate(var(--spark-angle)) translateX(0) scale(1.5);opacity:1}100%{transform:rotate(var(--spark-angle)) translateX(var(--spark-distance)) scale(.15);opacity:0}}
@media(max-width:650px){.magic-family-tree{min-height:auto}.magic-child-choice{grid-template-columns:1fr}.magic-spell-stage{min-height:360px}.training-wizard{width:230px;height:285px}.training-orb{left:calc(50% + 72px);top:39%;width:90px;height:90px}.spell-burst{left:calc(50% + 72px);top:39%}}
@media(max-width:850px){.inheritance-when-used{grid-template-columns:1fr}}
@media(max-width:650px){.inheritance-purpose>div,.inheritance-mission,.inheritance-example-grid{grid-template-columns:1fr}}

/* Inheritance Builder: Creature Academy */
.inheritance-builder-purpose{margin-bottom:15px;padding:15px 18px;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(105deg,#dbeafe,#fce7f3,#fff7c7);box-shadow:var(--small-shadow)}
.inheritance-builder-purpose>strong{font:1000 1.25rem/1 Fredoka,sans-serif}.inheritance-builder-purpose>p{margin:6px 0 12px;font-weight:800}.inheritance-builder-purpose>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.inheritance-builder-purpose span{padding:9px;border:3px solid var(--ink);border-radius:11px;background:rgba(255,255,255,.76);text-align:center;font-weight:900}
.creature-parent-card{background:linear-gradient(145deg,#e0f2fe,#ede9fe)}.creature-parent-icon{display:grid;place-items:center;width:90px;height:90px;border:5px solid var(--ink);border-radius:50%;background:var(--yellow);font:1000 2.5rem/1 Fredoka,sans-serif}.creature-parent-card small{font-weight:900}
.creature-builder-options button>img{width:100%;height:220px;object-fit:contain;filter:drop-shadow(0 9px 7px rgba(20,33,61,.24))}.creature-builder-options button>b{min-height:2.4em;text-align:center}.creature-builder-options button>code{font-size:.78rem;text-align:center}
.inherit-builder-stage{position:relative;display:block;min-height:570px;overflow:hidden;background:linear-gradient(rgba(23,34,56,.02),rgba(23,34,56,.12)),url("./assets/images/alien/grassy_knoll.png") center/cover}
.creature-training-card{position:absolute;inset:0;display:block;min-width:0;min-height:0;padding:0;border:0;border-radius:0;background:transparent;box-shadow:none;pointer-events:none}
.creature-hill-actor{position:absolute;left:2%;top:25%;z-index:2;width:34%;pointer-events:none;transform-origin:center}
.creature-training-card[data-child="unicorn"] .creature-hill-actor{left:19%;top:29%;width:31%}
.creature-training-image{width:100%;height:235px;object-fit:contain;filter:drop-shadow(0 10px 8px rgba(20,33,61,.3))}
.creature-control-tray{position:absolute;bottom:5px;z-index:4;display:grid;gap:6px;width:calc(50% - 12px);padding:9px;border:4px solid var(--ink);border-radius:14px;background:rgba(255,255,255,.78);backdrop-filter:blur(2px);text-align:center;pointer-events:auto}
.creature-training-card[data-child="dragon"] .creature-control-tray{left:5px}.creature-training-card[data-child="unicorn"] .creature-control-tray{right:5px}
.method-origin{display:grid;grid-template-columns:1fr 1fr;gap:5px;width:100%}.method-origin span{padding:5px;border:2px solid var(--ink);border-radius:7px;background:#eefcff;font-size:.64rem;font-weight:1000}.method-origin span:last-child{background:#f3e8ff}
.inherit-child-actions button{display:grid;gap:2px}.inherit-child-actions button small{font-family:Nunito,sans-serif;font-size:.6rem}
.creature-training-card.is-flying .creature-hill-actor{z-index:6;animation:creatureFlyAway 2.65s cubic-bezier(.2,.65,.25,1) forwards}.creature-training-card.is-special .creature-training-image{animation:creaturePower 1s ease-in-out 2}
@keyframes creatureFlyAway{0%{transform:translate(0,0) rotate(0);opacity:1}18%{transform:translate(35%,-95%) rotate(-7deg)}42%{transform:translate(115%,-145%) rotate(5deg)}64%{transform:translate(185%,-80%) rotate(-4deg)}82%{transform:translate(245%,-155%) rotate(5deg);opacity:1}100%{transform:translate(345%,-210%) rotate(8deg);opacity:0}}
@keyframes creaturePower{50%{transform:scale(1.08);filter:drop-shadow(0 0 22px #f59e0b) brightness(1.08)}}
@media(max-width:650px){.inheritance-builder-purpose>div{grid-template-columns:1fr}.creature-builder-options{grid-template-columns:1fr}.inherit-builder-stage{min-height:720px}.creature-training-image{height:180px}.creature-hill-actor{width:42%}.creature-training-card[data-child="unicorn"] .creature-hill-actor{width:39%}.creature-control-tray{width:calc(50% - 8px);padding:6px}.method-origin{grid-template-columns:1fr}.inherit-child-actions{grid-template-columns:1fr}}

/* Inheritance Challenge: Magic Wand */
.inheritance-challenge-explanation{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px}.inheritance-challenge-explanation>div{padding:12px 14px;border:4px solid var(--ink);border-radius:14px;background:#fff}.inheritance-challenge-explanation strong{color:#6d28d9}.inheritance-challenge-explanation p{margin:4px 0 0;font-weight:800;line-height:1.35}
.inherit-challenge-app{display:grid;grid-template-columns:minmax(390px,.9fr) minmax(500px,1.1fr);gap:20px;align-items:start}.inherit-challenge-parent{display:grid;grid-template-columns:1fr auto;gap:5px 10px;margin:10px 0;padding:12px;border:4px solid var(--ink);border-radius:14px;background:#eafaff}.inherit-challenge-parent span{grid-column:1/-1;font-weight:800}.inherit-challenge-parent code{padding:3px 8px;border-radius:8px;background:var(--ink);color:#bbf7d0;font-weight:900}
.inherit-choice-group{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin:12px 0;padding:10px;border:4px dashed var(--ink);border-radius:14px}.inherit-choice-group legend{padding:0 7px;font-weight:1000}.inherit-choice-group button{padding:10px 6px;border:3px solid var(--ink);border-radius:10px;background:#eefcff;color:var(--ink);font-weight:1000}.inherit-choice-group button:hover,.inherit-choice-group button.is-selected{background:var(--yellow);transform:translateY(-2px)}.inherit-choice-group button.is-wrong{background:#fecaca}
.inherit-challenge-code{min-height:190px;margin:12px 0;padding:14px;border:4px solid var(--ink);border-radius:14px;background:#101827;color:#bbf7d0;white-space:pre-wrap}.inherit-challenge-stage{position:relative;display:grid;justify-items:center;align-content:end;min-height:570px;overflow:hidden;padding:18px;border:5px solid var(--ink);border-radius:18px;background:radial-gradient(circle at 50% 30%,rgba(167,139,250,.23),transparent 38%),url("./assets/images/alien/grassy_knoll.png") center/cover}.inherit-challenge-stage>img{width:min(430px,82%);height:455px;object-fit:contain;filter:drop-shadow(0 12px 10px rgba(20,33,61,.34));transition:.25s}.inherit-method-checks{position:absolute;top:14px;right:14px;left:14px;display:grid;grid-template-columns:1fr 1fr;gap:8px}.inherit-method-checks span{padding:9px;border:3px solid var(--ink);border-radius:999px;background:rgba(255,255,255,.88);text-align:center;font-weight:1000}.inherit-method-checks span.is-done{background:#bbf7d0}.inherit-challenge-stage>strong{position:absolute;right:14px;bottom:14px;left:14px;padding:9px;border:3px solid var(--ink);border-radius:999px;background:var(--yellow);text-align:center}.inherit-challenge-stage.is-testing>img{animation:wandTest .7s ease-in-out}.inherit-challenge-stage.is-success>img{animation:wandMagic 1s ease-in-out 2}.inherit-challenge-stage.is-error{animation:inheritChallengeShake .35s ease-in-out 2}@keyframes wandTest{50%{transform:translateY(-12px) rotate(-2deg)}}@keyframes wandMagic{50%{transform:scale(1.07);filter:drop-shadow(0 0 30px #a855f7) brightness(1.08)}}@keyframes inheritChallengeShake{25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}
@media(max-width:950px){.inherit-challenge-app{grid-template-columns:1fr}}@media(max-width:650px){.inheritance-challenge-explanation,.inherit-choice-group{grid-template-columns:1fr}.inherit-challenge-stage{min-height:500px}.inherit-challenge-stage>img{height:390px}.inherit-method-checks{grid-template-columns:1fr}}

/* Polymorphism: Robo Pet Sound Lab */
.poly-explanation{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:18px}.poly-explanation article{padding:15px;border:5px solid var(--ink);border-radius:17px;background:#fff;box-shadow:var(--small-shadow)}.poly-explanation article:nth-child(2){background:#fff7c7}.poly-explanation article:nth-child(3){background:#eafaff}.poly-explanation h2{margin:8px 0 6px;font-size:1.2rem}.poly-explanation p{margin:0;font-weight:800;line-height:1.45}
.poly-pet-app{display:grid;grid-template-columns:minmax(390px,.82fr) minmax(540px,1.18fr);gap:20px;align-items:start}.poly-code{margin:12px 0;padding:16px;border:5px solid var(--ink);border-radius:16px;background:#101827;color:#bbf7d0;white-space:pre-wrap;font-size:.9rem;line-height:1.5}.poly-code .is-running{display:block;margin:0 -8px;padding:0 8px;border-radius:6px;background:#fde047;color:var(--ink)}.poly-call-card{display:grid;grid-template-columns:1fr auto;gap:5px 10px;padding:12px;border:4px dashed var(--ink);border-radius:13px;background:#eefcff}.poly-call-card code{padding:4px 9px;border-radius:8px;background:var(--yellow);font-weight:1000}.poly-call-card span{grid-column:1/-1;font-weight:800}
.poly-pet-stage{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;min-height:500px;padding:18px;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(rgba(16,24,39,.12),rgba(16,24,39,.28)),url("./assets/images/alien/alien_lab.png") center/cover}.poly-pet-card{position:relative;display:grid;justify-items:center;align-content:end;gap:7px;min-width:0;padding:12px;border:4px solid rgba(255,255,255,.88);border-radius:16px;background:rgba(255,255,255,.16);text-align:center;transition:.25s}.poly-pet-card>span{position:absolute;top:9px;left:9px;padding:5px 8px;border-radius:8px;background:var(--yellow);font:1000 .72rem/1 monospace}.poly-pet-card>img{width:100%;height:310px;object-fit:contain;filter:drop-shadow(0 12px 8px rgba(20,33,61,.38))}.poly-pet-card>strong{padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.9)}.poly-speech{min-height:44px;width:100%;padding:9px;border:3px solid var(--ink);border-radius:12px;background:#fff;font-weight:1000}.poly-pet-card.is-speaking{z-index:2;transform:translateY(-8px) scale(1.03);background:rgba(190,242,100,.34);box-shadow:0 0 0 7px rgba(253,224,71,.6)}.poly-pet-card.is-speaking>img{animation:polyPetSpeak .45s ease-in-out 2}.poly-pet-card.is-done .poly-speech{background:#bbf7d0}.poly-loop-status{margin:10px 0;padding:9px;border:4px solid var(--ink);border-radius:999px;background:#fff7c7;text-align:center;font-weight:1000}@keyframes polyPetSpeak{50%{transform:translateY(-12px) rotate(2deg)}}
@media(max-width:950px){.poly-pet-app{grid-template-columns:1fr}}@media(max-width:700px){.poly-explanation,.poly-pet-stage{grid-template-columns:1fr}.poly-pet-stage{min-height:auto}.poly-pet-card>img{height:250px}}

/* Polymorphism Builder */
.poly-builder-guide{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px}.poly-builder-guide>div{padding:12px;border:4px solid var(--ink);border-radius:14px;background:#fff}.poly-builder-guide strong{color:#6d28d9}.poly-builder-guide p{margin:4px 0 0;font-weight:800}.poly-builder-app{display:grid;grid-template-columns:minmax(420px,.9fr) minmax(550px,1.1fr);gap:20px;align-items:start}.poly-builder-rows{display:grid;gap:9px}.poly-builder-rows>div{display:grid;grid-template-columns:72px 1fr auto;align-items:center;gap:7px;padding:8px;border:4px solid var(--ink);border-radius:13px;background:#eefcff}.poly-builder-rows img{grid-row:1/3;width:70px;height:70px;object-fit:contain}.poly-builder-rows code{font-weight:1000}.poly-builder-rows>div>div{grid-column:2/4;display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.poly-builder-rows button{padding:7px;border:3px solid var(--ink);border-radius:8px;background:#fff;font-weight:1000}.poly-builder-rows button.is-selected{background:var(--yellow)}.poly-builder-rows button.is-correct{background:#bbf7d0}.poly-builder-rows button.is-wrong{background:#fecaca}.poly-builder-code{min-height:220px;margin:12px 0;padding:13px;border:4px solid var(--ink);border-radius:13px;background:#101827;color:#bbf7d0;white-space:pre-wrap;font-size:.82rem;line-height:1.45}
.poly-builder-stage{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;min-height:500px;padding:15px;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(rgba(8,15,29,.1),rgba(8,15,29,.34)),url("./assets/images/alien/alien_lab.png") center/cover}.poly-builder-stage>div{position:relative;display:grid;justify-items:center;align-content:end;gap:4px;min-width:0;padding:8px;border:4px solid rgba(255,255,255,.85);border-radius:14px;background:rgba(255,255,255,.13);text-align:center;transition:.25s}.poly-builder-stage span{position:absolute;top:7px;left:7px;padding:4px 6px;border-radius:7px;background:var(--yellow);font:1000 .65rem/1 monospace}.poly-builder-stage img{width:100%;height:280px;object-fit:contain;filter:drop-shadow(0 10px 7px rgba(20,33,61,.4))}.poly-builder-stage strong,.poly-builder-stage small,.poly-builder-stage b{padding:3px 7px;border-radius:999px;background:rgba(255,255,255,.9)}.poly-builder-stage b{width:100%;border:2px solid var(--ink)}.poly-builder-stage>div.is-speaking{z-index:2;transform:translateY(-8px) scale(1.04);background:rgba(253,224,71,.32);box-shadow:0 0 0 6px rgba(190,242,100,.55)}.poly-builder-stage>div.is-speaking img{animation:polyPetSpeak .42s ease-in-out 2}.poly-builder-stage>div.is-done b{background:#bbf7d0}
@media(max-width:1000px){.poly-builder-app{grid-template-columns:1fr}}@media(max-width:700px){.poly-builder-guide,.poly-builder-stage{grid-template-columns:1fr}.poly-builder-stage img{height:220px}.poly-builder-rows>div{grid-template-columns:60px 1fr}.poly-builder-rows img{width:58px;height:58px}.poly-builder-rows>div>div{grid-column:1/-1}}

/* Polymorphism Challenge: Enchanted Room */
.poly-challenge-guide{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:16px}.poly-challenge-guide>div{padding:12px;border:4px solid var(--ink);border-radius:14px;background:#fff}.poly-challenge-guide strong{color:#6d28d9}.poly-challenge-guide p{margin:4px 0 0;font-weight:800}.poly-challenge-app{display:grid;grid-template-columns:minmax(430px,.95fr) minmax(540px,1.05fr);gap:20px;align-items:start}.poly-challenge-choices{display:grid;gap:9px}.poly-challenge-choices>div{display:grid;grid-template-columns:90px 1fr;align-items:center;gap:8px;padding:8px;border:4px solid var(--ink);border-radius:13px;background:#eefcff}.poly-challenge-choices>div>strong{font-size:.9rem}.poly-challenge-choices>div>div:last-child{grid-column:2;display:grid;grid-template-columns:repeat(3,1fr);gap:5px}.poly-challenge-choices button{padding:7px 5px;border:3px solid var(--ink);border-radius:8px;background:#fff;font-size:.72rem;font-weight:1000}.poly-challenge-choices button.is-selected{background:var(--yellow)}.poly-challenge-choices button.is-correct{background:#bbf7d0}.poly-challenge-choices button.is-wrong{background:#fecaca}.poly-object-placeholder{display:grid;place-items:center;align-content:center;width:88px;height:88px;border:3px dashed #64748b;border-radius:12px;background:rgba(255,255,255,.72);text-align:center}.poly-object-placeholder span{font:1000 .7rem/1 monospace}.poly-object-placeholder small{font-size:.55rem}.poly-object-placeholder img{width:100%;height:100%;object-fit:contain}.poly-challenge-code{margin:12px 0;padding:13px;border:4px solid var(--ink);border-radius:13px;background:#101827;color:#bbf7d0;white-space:pre-wrap}
.poly-challenge-stage{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;min-height:500px;padding:15px;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(rgba(8,15,29,.06),rgba(8,15,29,.28)),url("./assets/images/cave/cave.png") center/cover}.poly-challenge-stage>div{display:grid;justify-items:center;align-content:end;gap:7px;min-width:0;padding:10px;border:4px solid rgba(255,255,255,.72);border-radius:14px;background:rgba(16,24,39,.2);text-align:center}.poly-challenge-stage .poly-object-placeholder{position:relative;width:100%;height:270px;border:0;background:transparent}.poly-challenge-stage .poly-object-placeholder>img:not(.poly-fired-dart){width:100%;height:100%;object-fit:contain;filter:drop-shadow(0 10px 8px rgba(0,0,0,.45))}.poly-challenge-stage strong,.poly-challenge-stage b{padding:5px 9px;border-radius:999px;background:rgba(255,255,255,.92)}.poly-challenge-stage b{width:100%;border:2px solid var(--ink)}.poly-challenge-stage>div.is-active{transform:translateY(-8px);background:rgba(253,224,71,.2);box-shadow:0 0 0 6px rgba(190,242,100,.55)}.poly-challenge-stage>div.is-active .poly-object-placeholder{animation:polyObjectActivate .5s ease-in-out 2}.poly-challenge-stage>div.is-done b{background:#bbf7d0}.poly-fired-dart{position:absolute;top:35%;right:5%;z-index:3;width:85%;height:38%;object-fit:contain;opacity:0;pointer-events:none}.poly-challenge-stage [data-poly-result="trap"].is-active .poly-fired-dart{animation:polyDartFire 1.15s ease-out forwards}@keyframes polyObjectActivate{50%{transform:translateY(-10px) scale(1.05)}}@keyframes polyDartFire{0%{transform:translateX(35%) scale(.65);opacity:0}20%{opacity:1}100%{transform:translateX(-220%) scale(1);opacity:0}}
@media(max-width:1000px){.poly-challenge-app{grid-template-columns:1fr}}@media(max-width:700px){.poly-challenge-guide,.poly-challenge-stage{grid-template-columns:1fr}.poly-challenge-choices>div{grid-template-columns:72px 1fr}.poly-object-placeholder{width:70px;height:70px}.poly-challenge-choices>div>div:last-child{grid-column:1/-1}.poly-challenge-stage .poly-object-placeholder{height:220px}}

/* Encapsulation: Nova's Protected Energy */
.encap-explanation{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:18px}.encap-explanation article{padding:15px;border:5px solid var(--ink);border-radius:17px;background:#fff;box-shadow:var(--small-shadow)}.encap-explanation article:nth-child(2){background:#fff7c7}.encap-explanation article:nth-child(3){background:#eafaff}.encap-explanation h2{margin:8px 0 6px;font-size:1.2rem}.encap-explanation p{margin:0;font-weight:800;line-height:1.45}.encap-nova-app{display:grid;grid-template-columns:minmax(420px,.85fr) minmax(550px,1.15fr);gap:20px;align-items:start}.encap-code{margin:12px 0;padding:15px;border:5px solid var(--ink);border-radius:15px;background:#101827;color:#bbf7d0;white-space:pre-wrap;line-height:1.45}.encap-controls{display:grid;gap:8px}.encap-controls button{display:grid;gap:4px;padding:11px;border:4px solid var(--ink);border-radius:12px;background:#bbf7d0;text-align:left}.encap-controls button code{font-weight:1000}.encap-controls button span{font-weight:800}.encap-controls button.is-danger{background:#fee2e2}.encap-controls button.is-used{box-shadow:0 0 0 5px var(--yellow)}.encap-goals{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:10px 0}.encap-goals span{padding:8px;border:3px dashed var(--ink);border-radius:9px;text-align:center;font-size:.7rem;font-weight:1000}.encap-goals span.is-done{border-style:solid;background:#bbf7d0}
.encap-nova-stage{position:relative;min-height:570px;overflow:hidden;padding:18px;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(rgba(8,15,29,.05),rgba(8,15,29,.25)),url("./assets/images/alien/alien_lab.png") center/cover}.encap-nova-character{position:absolute;bottom:70px;left:3%;width:43%;height:420px;object-fit:contain;filter:drop-shadow(0 12px 9px rgba(0,0,0,.4))}.encap-vault-placeholder{position:absolute;top:70px;right:5%;display:grid;place-items:center;align-content:center;gap:10px;width:47%;height:330px;padding:18px;border:6px dashed #cbd5e1;border-radius:24px;background:rgba(15,23,42,.78);color:#fff;text-align:center}.encap-vault-placeholder>strong{font:1000 1.1rem/1 Fredoka,sans-serif}.encap-vault-placeholder>span{font-size:.75rem}.encap-lock{padding:10px 15px;border:4px solid var(--ink);border-radius:999px;background:var(--yellow);color:var(--ink);font-weight:1000}.encap-meter{position:absolute;right:5%;bottom:75px;display:grid;grid-template-columns:1fr auto;gap:6px 10px;width:47%;padding:11px;border:4px solid var(--ink);border-radius:14px;background:rgba(255,255,255,.92)}.encap-meter>div{grid-column:1/-1;height:25px;overflow:hidden;border:3px solid var(--ink);border-radius:999px;background:#1e293b}.encap-meter>div>span{display:block;width:60%;height:100%;background:linear-gradient(90deg,#22c55e,#bef264);transition:width .5s ease}.encap-shield-message{position:absolute;right:3%;bottom:12px;left:3%;padding:10px;border:4px solid var(--ink);border-radius:999px;background:var(--yellow);text-align:center;font-weight:1000}.encap-nova-stage.is-damaged .encap-nova-character{animation:encapDamage .45s ease-in-out 2}.encap-nova-stage.is-healed .encap-nova-character{animation:encapHeal .65s ease-in-out}.encap-nova-stage.is-blocked .encap-vault-placeholder{animation:encapBlock .35s ease-in-out 2;box-shadow:0 0 0 8px rgba(251,113,133,.6)}@keyframes encapDamage{25%{transform:translateX(-8px) rotate(-2deg)}75%{transform:translateX(8px) rotate(2deg)}}@keyframes encapHeal{50%{transform:translateY(-12px) scale(1.04);filter:drop-shadow(0 0 25px #bef264)}}@keyframes encapBlock{25%{transform:translateX(-7px)}75%{transform:translateX(7px)}}
@media(max-width:1000px){.encap-nova-app{grid-template-columns:1fr}}@media(max-width:700px){.encap-explanation,.encap-goals{grid-template-columns:1fr}.encap-nova-stage{min-height:680px}.encap-nova-character{bottom:190px;left:5%;width:55%;height:340px}.encap-vault-placeholder{top:35px;right:4%;width:50%;height:280px}.encap-meter{right:5%;bottom:88px;left:5%;width:auto}}

/* Encapsulation Builder: protected cave map */
.encap-builder-tip{display:flex;gap:12px;align-items:center;margin:0 0 16px;padding:12px 16px;border:4px solid var(--ink);border-radius:15px;background:#fff7c7;font-weight:900}.encap-builder-tip strong{padding:6px 10px;border-radius:999px;background:var(--yellow)}.encap-builder-app{display:grid;grid-template-columns:minmax(390px,.8fr) minmax(560px,1.2fr);gap:18px;align-items:start}.encap-builder-code{margin:12px 0;padding:15px;border:5px solid var(--ink);border-radius:15px;background:#101827;color:#bbf7d0;white-space:pre-wrap;line-height:1.4}.encap-builder-buttons{display:grid;gap:8px}.encap-builder-buttons button{display:grid;gap:3px;padding:10px 12px;border:4px solid var(--ink);border-radius:12px;background:#bbf7d0;text-align:left}.encap-builder-buttons button code{font-weight:1000}.encap-builder-buttons button span{font-weight:900}.encap-builder-buttons button.is-danger{background:#fee2e2}.encap-builder-buttons button.is-used{box-shadow:0 0 0 5px var(--yellow)}.encap-builder-buttons button:disabled{cursor:not-allowed;opacity:.55}.encap-builder-goals{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin:10px 0}.encap-builder-goals span{padding:8px;border:3px dashed var(--ink);border-radius:9px;text-align:center;font-size:.72rem;font-weight:1000}.encap-builder-goals span.is-done{border-style:solid;background:#bbf7d0}
.encap-builder-stage{position:relative;min-height:555px;overflow:hidden;border:5px solid var(--ink);border-radius:18px;background:linear-gradient(rgba(10,15,28,.12),rgba(10,15,28,.45)),url("./assets/images/cave/cave.png") center/cover}.encap-builder-object{position:absolute;bottom:48px;left:3%;display:grid;justify-items:center;width:48%}.encap-builder-object img{width:100%;height:390px;object-fit:contain;filter:drop-shadow(0 12px 8px rgba(0,0,0,.55));transition:transform .45s ease}.encap-builder-map{position:absolute;top:35px;right:3%;z-index:3;display:grid;justify-items:center;width:47%}.encap-builder-map img{width:100%;height:335px;object-fit:contain;filter:drop-shadow(0 12px 8px rgba(0,0,0,.5));transition:transform .5s ease,opacity .35s ease}.encap-builder-message{position:absolute;right:3%;bottom:14px;left:3%;z-index:5;padding:10px;border:4px solid var(--ink);border-radius:999px;background:rgba(255,255,255,.95);text-align:center;font-weight:1000}.encap-builder-stage.is-closing .encap-builder-map img{animation:encapMapClosing .48s ease}.encap-builder-stage.is-packing .encap-builder-map img{animation:encapMapPack 1.35s cubic-bezier(.55,.05,.75,.55) forwards}.encap-builder-stage.is-packing .encap-builder-object img{animation:encapBagReceive 1.35s ease}.encap-builder-stage.is-reading .encap-builder-map img{animation:encapMapRead .65s ease}.encap-builder-stage.is-blocked .encap-builder-object img{animation:encapLockBlock .35s ease-in-out 2;filter:drop-shadow(0 0 18px #fb7185)}@keyframes encapMapClosing{50%{transform:scaleX(.72) scaleY(.92);opacity:.65}}@keyframes encapMapPack{0%{transform:translate(0,0) scale(1) rotate(0);opacity:1}72%{transform:translate(-92%,8%) scale(.5) rotate(-8deg);opacity:1}92%{transform:translate(-104%,12%) scale(.32) rotate(-8deg);opacity:1}100%{transform:translate(-108%,14%) scale(.22) rotate(-8deg);opacity:0}}@keyframes encapBagReceive{0%,72%{transform:scale(1)}88%{transform:scale(1.06)}100%{transform:scale(1)}}@keyframes encapMapRead{50%{transform:scale(1.08) rotate(-2deg);filter:drop-shadow(0 0 25px #fde047)}}@keyframes encapLockBlock{25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}
@media(max-width:1000px){.encap-builder-app{grid-template-columns:1fr}}@media(max-width:700px){.encap-builder-tip{align-items:flex-start;flex-direction:column}.encap-builder-goals{grid-template-columns:1fr}.encap-builder-stage{min-height:650px}.encap-builder-object{bottom:55px;width:58%}.encap-builder-object img{height:320px}.encap-builder-map{right:1%;width:55%}.encap-builder-map img{height:285px}.encap-builder-lock{right:5%;bottom:115px}}

/* Encapsulation Challenge: protected piggy bank */
.encap-bank-explainer{display:flex;gap:12px;align-items:center;margin-bottom:16px;padding:12px 16px;border:4px solid var(--ink);border-radius:15px;background:#fff7c7;font-weight:900}.encap-bank-explainer strong{padding:6px 10px;border-radius:999px;background:var(--yellow)}.encap-bank-app{display:grid;grid-template-columns:minmax(390px,.82fr) minmax(560px,1.18fr);gap:18px;align-items:start}.encap-bank-code{margin:12px 0;padding:14px;border:5px solid var(--ink);border-radius:15px;background:#101827;color:#bbf7d0;white-space:pre-wrap;line-height:1.4}.encap-bank-terminal-label{display:block;margin:4px -14px 8px;padding:7px 14px;border-top:3px solid #334155;border-bottom:3px solid #334155;background:#172033;color:#fde047;font:1000 .72rem/1 Fredoka,sans-serif;letter-spacing:.08em}.encap-bank-live-code{display:block;min-height:3.8em;padding:7px 9px;border-radius:8px;background:#0a1020;color:#e2e8f0}.encap-bank-live-code .is-command{color:#fde047;font-weight:1000}.encap-bank-live-code .is-success{color:#86efac}.encap-bank-live-code .is-error{color:#fda4af}.encap-bank-actions{display:grid;gap:8px}.encap-bank-actions button{display:grid;grid-template-columns:36px 1fr;gap:2px 8px;align-items:center;padding:9px 11px;border:4px solid var(--ink);border-radius:12px;background:#bbf7d0;text-align:left}.encap-bank-actions button>b{grid-row:1/3;display:grid;place-items:center;width:32px;height:32px;border:3px solid var(--ink);border-radius:50%;background:var(--yellow)}.encap-bank-actions button code{font-weight:1000}.encap-bank-actions button span{font-weight:900}.encap-bank-actions button.is-danger{background:#fee2e2}.encap-bank-actions button:disabled{cursor:not-allowed;filter:grayscale(.7);opacity:.45}.encap-bank-actions button.is-done{box-shadow:0 0 0 5px var(--yellow)}
.encap-bank-stage{position:relative;min-height:510px;overflow:hidden;border:5px solid var(--ink);border-radius:18px;background:radial-gradient(circle at 50% 35%,#fff9d8 0 24%,#dbeafe 62%,#bfdbfe 100%)}.encap-bank-pig{position:absolute;right:8%;bottom:48px;width:70%;height:390px;object-fit:contain;filter:drop-shadow(0 14px 9px rgba(15,23,42,.3));transition:transform .4s ease}.encap-bank-coins{position:absolute;top:-155px;right:26%;z-index:3;width:30%;height:330px;object-fit:contain;opacity:0;pointer-events:none}.encap-bank-change{position:absolute;top:82px;left:19%;z-index:5;min-width:120px;text-align:center;font:1000 2.2rem/1 Fredoka,sans-serif;opacity:0;filter:drop-shadow(0 3px 0 #fff)}.encap-bank-balance{position:absolute;top:18px;left:18px;z-index:4;display:grid;gap:3px;padding:10px 14px;border:4px solid var(--ink);border-radius:15px;background:rgba(255,255,255,.95)}.encap-bank-balance span{font-size:.7rem;font-weight:1000}.encap-bank-balance strong{font-size:1.35rem}.encap-bank-rule{position:absolute;right:3%;bottom:12px;left:3%;z-index:4;padding:10px;border:4px solid var(--ink);border-radius:999px;background:var(--yellow);text-align:center;font-weight:1000}.encap-bank-stage.is-depositing .encap-bank-coins{animation:encapCoinsDrop 1.35s ease-in forwards}.encap-bank-stage.is-depositing .encap-bank-change{color:#15803d;animation:encapMoneyChange 1.25s ease-out}.encap-bank-stage.is-depositing .encap-bank-pig{animation:encapPigBounce .4s ease-in-out 3}.encap-bank-stage.is-spending .encap-bank-coins{animation:encapCoinsOut 1.15s ease-out forwards}.encap-bank-stage.is-spending .encap-bank-change{color:#dc2626;animation:encapMoneyChange 1.1s ease-out}.encap-bank-stage.is-spending .encap-bank-pig{animation:encapPigSpend .55s ease}.encap-bank-stage.is-rejecting .encap-bank-pig,.encap-bank-stage.is-blocking .encap-bank-pig{animation:encapPigReject .3s ease-in-out 2}.encap-bank-stage.is-rejecting .encap-bank-rule,.encap-bank-stage.is-blocking .encap-bank-rule{background:#fecaca;box-shadow:0 0 0 7px rgba(251,113,133,.4)}@keyframes encapCoinsDrop{0%{transform:translateY(-50%);opacity:0}15%{opacity:1}85%{opacity:1}100%{transform:translateY(105%);opacity:0}}@keyframes encapCoinsOut{0%{transform:translateY(105%) scale(.65);opacity:0}18%{opacity:1}80%{opacity:1}100%{transform:translate(35%,-55%) scale(.9);opacity:0}}@keyframes encapMoneyChange{0%{transform:translateY(22px) scale(.7);opacity:0}25%,75%{transform:translateY(0) scale(1.12);opacity:1}100%{transform:translateY(-25px) scale(1);opacity:0}}@keyframes encapPigBounce{50%{transform:translateY(-10px) scale(1.03)}}@keyframes encapPigSpend{50%{transform:rotate(-3deg) scale(.98)}}@keyframes encapPigReject{25%{transform:translateX(-8px)}75%{transform:translateX(8px)}}.encap-bank-progress{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:10px}.encap-bank-progress span{padding:7px;border:3px dashed var(--ink);border-radius:9px;text-align:center;font-size:.68rem;font-weight:1000}.encap-bank-progress span.is-done{border-style:solid;background:#bbf7d0}
@media(max-width:1000px){.encap-bank-app{grid-template-columns:1fr}}@media(max-width:700px){.encap-bank-explainer{align-items:flex-start;flex-direction:column}.encap-bank-stage{min-height:460px}.encap-bank-pig{right:2%;width:88%;height:340px}.encap-bank-progress{grid-template-columns:repeat(2,1fr)}}

.object-factory {
  position: absolute;
  inset: 22px 18px 62px;
  display: grid;
  align-content: center;
  gap: 18px;
}

.blueprint-card {
  justify-self: center;
  border: 4px solid var(--ink);
  border-radius: 15px;
  background: var(--sky);
  box-shadow: 4px 5px 0 var(--ink);
  padding: 18px 26px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.55rem;
  font-weight: 1000;
}

.cookie-row {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.cookie-row span {
  width: 44px;
  height: 44px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #facc15;
  box-shadow: 3px 4px 0 rgba(20, 33, 61, 0.35);
}

.cookie-row span:nth-child(2) {
  background: #86efac;
}

.cookie-row span:nth-child(3) {
  background: #f9a8d4;
}

.unit-icon-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-top: 16px;
  min-height: 38px;
}

.mini-icon,
.mini-box,
.mini-arrow {
  display: inline-grid;
  place-items: center;
  min-width: 36px;
  min-height: 34px;
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: var(--mint);
  box-shadow: 2px 3px 0 var(--ink);
  padding: 4px 8px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 1000;
  line-height: 1;
}

.mini-box {
  background: #fef3c7;
}

.mini-arrow {
  min-width: auto;
  border-color: transparent;
  background: transparent;
  box-shadow: none;
  padding-inline: 0;
}

.pathway-unit h2 {
  margin: 16px 0 10px;
  font-size: clamp(1.85rem, 3.5vw, 3rem);
  line-height: 0.95;
}

.lesson-link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.lesson-link-grid a {
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: #fff7cc;
  color: var(--ink);
  padding: 10px 12px;
  font-weight: 1000;
  line-height: 1.12;
}

.lesson-link-grid a:hover {
  background: var(--mint);
}

.lesson-section {
  padding: clamp(46px, 7vw, 82px) clamp(18px, 6vw, 72px);
  background:
    radial-gradient(circle at 9% 18%, rgba(253, 224, 71, 0.42) 0 72px, transparent 73px),
    radial-gradient(circle at 88% 15%, rgba(125, 211, 252, 0.34) 0 86px, transparent 87px),
    radial-gradient(circle at 94% 82%, rgba(134, 239, 172, 0.34) 0 70px, transparent 71px),
    linear-gradient(135deg, #fff7cc 0%, #fef3c7 62%, #eef6ff 100%);
  border-block: 5px solid var(--ink);
}

.lesson-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 22px;
}

.lesson-page {
  min-height: calc(100vh - 78px);
}

.back-link {
  display: inline-flex;
  margin-bottom: 22px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--white);
  box-shadow: var(--small-shadow);
  padding: 8px 14px;
  font-weight: 1000;
}

.lesson-hero h1,
.lesson-hero h2 {
  max-width: 900px;
  margin: 14px 0;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: clamp(2.4rem, 5.5vw, 5rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.lesson-hero p {
  max-width: 780px;
  font-size: 1.18rem;
  line-height: 1.5;
  font-weight: 850;
}

.lesson-meta {
  display: grid;
  align-content: center;
  gap: 8px;
  background: var(--white);
  padding: 16px;
}

.lesson-hero .lesson-meta {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  align-items: center;
  gap: 8px;
  width: fit-content;
  max-width: 100%;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
}

.track-card {
  position: relative;
  overflow: hidden;
  gap: 14px;
  background:
    radial-gradient(circle at 14% 18%, rgba(253, 224, 71, 0.45) 0 46px, transparent 47px),
    radial-gradient(circle at 90% 8%, rgba(125, 211, 252, 0.4) 0 58px, transparent 59px),
    linear-gradient(145deg, #ffffff 0%, #fef3c7 100%);
}

.pathway-overview-hero .track-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
  overflow: visible;
}

.track-card::after {
  content: "";
  position: absolute;
  right: 16px;
  bottom: 14px;
  width: 58px;
  height: 58px;
  border: 4px solid rgba(20, 33, 61, 0.16);
  border-radius: 18px;
  transform: rotate(-9deg);
}

.pathway-overview-hero .track-card::after {
  content: none;
}

.track-badge {
  display: flex;
  align-items: center;
  gap: 7px;
  width: fit-content;
  border: 4px solid var(--ink);
  border-radius: 18px;
  background: var(--sky);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 8px;
}

.pathway-overview-hero .track-badge {
  display: none;
}

.track-badge span {
  display: grid;
  place-items: center;
  min-width: 34px;
  height: 34px;
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: var(--yellow);
  padding: 0 6px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 0.9rem;
  line-height: 1;
}

.pathway-overview-hero .track-badge span {
  min-width: 30px;
  height: 30px;
  border-radius: 11px;
}

.code-track-card .track-badge {
  background: #bfdbfe;
}

.oop-track-card .track-badge {
  background: #ddd6fe;
}

.track-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.track-chip-row span {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--mint);
  box-shadow: 2px 3px 0 var(--ink);
  padding: 5px 10px;
  font-size: 0.86rem;
  font-weight: 1000;
}

.track-chip-row span:nth-child(2) {
  background: var(--sky);
}

.track-chip-row span:nth-child(3) {
  background: #e0e7ff;
}

.track-chip-row span:nth-child(4) {
  background: #fed7aa;
}

.pathway-overview-hero .track-card strong {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--white);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 6px 12px;
  font-size: 1rem;
}

.lesson-meta strong {
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.75rem;
  line-height: 1;
}

.lesson-hero .lesson-meta strong {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--mint);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 6px 12px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1rem;
  line-height: 1;
}

.lesson-meta span {
  font-weight: 1000;
}

.lesson-hero .lesson-meta span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--sky);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 6px 12px;
  line-height: 1;
  font-weight: 1000;
}

.lesson-hero .lesson-meta span:nth-child(3) {
  background: #e0e7ff;
}

.lesson-hero .lesson-meta span:nth-child(4) {
  background: #fed7aa;
}

.space-rescue-scene {
  position: relative;
  min-height: 310px;
  overflow: hidden;
  margin-bottom: 24px;
  border: 5px solid var(--ink);
  border-radius: 22px;
  background:
    radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.85) 0 2px, transparent 3px),
    radial-gradient(circle at 72% 25%, rgba(255, 255, 255, 0.7) 0 2px, transparent 3px),
    linear-gradient(135deg, #17213a 0%, #1e3a8a 56%, #2563eb 100%);
  box-shadow: var(--small-shadow);
}

.image-rescue-scene {
  display: grid;
  gap: 0;
  min-height: 0;
  background: var(--ink);
}

.image-rescue-scene img {
  display: block;
  width: 100%;
  height: auto;
}

.image-rescue-scene .scene-caption {
  position: static;
  margin: 0;
  border-width: 4px 0 0;
  border-radius: 0;
  background: var(--yellow);
  box-shadow: none;
}

.space-stars span {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #fde047;
  box-shadow: 0 0 0 4px rgba(253, 224, 71, 0.18);
}

.space-stars span:nth-child(1) {
  left: 11%;
  top: 18%;
}

.space-stars span:nth-child(2) {
  left: 30%;
  top: 70%;
}

.space-stars span:nth-child(3) {
  right: 23%;
  top: 16%;
}

.space-stars span:nth-child(4) {
  right: 14%;
  bottom: 24%;
}

.space-stars span:nth-child(5) {
  left: 52%;
  top: 38%;
}

.planet {
  position: absolute;
  border: 5px solid var(--ink);
  border-radius: 999px;
  box-shadow: 5px 7px 0 rgba(20, 33, 61, 0.45);
}

.planet-home {
  left: 7%;
  bottom: 18%;
  width: 118px;
  height: 118px;
  background:
    radial-gradient(circle at 35% 30%, #fef3c7 0 16px, transparent 17px),
    #86efac;
}

.planet-rescue {
  right: 9%;
  top: 18%;
  width: 136px;
  height: 136px;
  background:
    radial-gradient(circle at 62% 38%, #dbeafe 0 18px, transparent 19px),
    #f9a8d4;
}

.rocket-path {
  position: absolute;
  left: 17%;
  right: 18%;
  top: 48%;
  display: flex;
  justify-content: space-between;
  border-top: 5px dashed rgba(255, 255, 255, 0.74);
}

.rocket-path span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-top: -24px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fef3c7;
  box-shadow: 3px 4px 0 rgba(20, 33, 61, 0.45);
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
}

.rescue-rocket {
  position: absolute;
  left: 24%;
  top: 30%;
  width: 74px;
  height: 118px;
  transform: rotate(38deg);
}

.rocket-body {
  position: absolute;
  inset: 8px 18px 18px;
  border: 5px solid var(--ink);
  border-radius: 42px 42px 18px 18px;
  background: #f8fafc;
  box-shadow: 3px 5px 0 rgba(20, 33, 61, 0.35);
}

.rocket-window {
  position: absolute;
  z-index: 2;
  left: 25px;
  top: 29px;
  width: 24px;
  height: 24px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--sky);
}

.rocket-flame {
  position: absolute;
  left: 25px;
  bottom: 0;
  width: 26px;
  height: 36px;
  border: 4px solid var(--ink);
  border-radius: 4px 4px 18px 18px;
  background: #fb923c;
}

.rescue-beacon {
  position: absolute;
  right: 15%;
  top: 26%;
  display: grid;
  place-items: center;
  width: 70px;
  height: 70px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--yellow);
  box-shadow: 4px 5px 0 rgba(20, 33, 61, 0.45);
}

.rescue-beacon span {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: #fb7185;
  box-shadow: 0 0 0 10px rgba(251, 113, 133, 0.28);
}

.astronaut-card {
  position: absolute;
  right: 8%;
  bottom: 15%;
  display: grid;
  justify-items: center;
  gap: 6px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: var(--white);
  box-shadow: 4px 5px 0 rgba(20, 33, 61, 0.45);
  padding: 10px 12px;
  font-weight: 1000;
}

.astronaut-helmet {
  width: 50px;
  height: 42px;
  border: 4px solid var(--ink);
  border-radius: 20px;
  background:
    linear-gradient(#101827 0 0) center / 30px 14px no-repeat,
    #f8fafc;
}

.scene-caption {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 18px;
  margin: 0;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: rgba(255, 253, 246, 0.94);
  box-shadow: 3px 4px 0 rgba(20, 33, 61, 0.42);
  padding: 10px 14px;
  font-weight: 1000;
}

.lesson-notice {
  background: var(--white);
  margin-bottom: 24px;
  padding: 20px;
}

.lesson-notice[hidden] {
  display: none;
}

.lesson-notice h3 {
  margin: 14px 0 8px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.8rem;
  line-height: 1;
}

.lesson-notice p {
  max-width: 760px;
  font-weight: 850;
  line-height: 1.45;
}

.scaffold-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.scaffold-grid article,
.activity-card {
  background: var(--white);
  padding: 18px;
}

.scaffold-grid article span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: var(--mint);
  box-shadow: 3px 4px 0 var(--ink);
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
}

.step-graphic,
.mission-token-row,
.sequence-output-graphic {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: center;
  margin-top: 14px;
}

.step-graphic i,
.mission-token-row span,
.sequence-output-graphic span {
  display: grid;
  place-items: center;
  min-width: 48px;
  min-height: 40px;
  border: 3px solid var(--ink);
  border-radius: 13px;
  background: #dbeafe;
  box-shadow: 2px 3px 0 var(--ink);
  font-style: normal;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 1000;
  line-height: 1.05;
  padding: 5px 9px;
  text-align: center;
}

.step-graphic i:nth-child(1)::before {
  content: "step";
}

.step-graphic i:nth-child(2)::before {
  content: "turn";
}

.step-graphic i:nth-child(3)::before {
  content: "go";
}

.map-graphic i:nth-child(1)::before {
  content: "read";
}

.map-graphic i:nth-child(2)::before {
  content: "map";
}

.map-graphic i:nth-child(3)::before {
  content: "next";
}

.beacon-graphic i:nth-child(1)::before {
  content: "fix";
}

.beacon-graphic i:nth-child(2)::before {
  content: "order";
}

.beacon-graphic i:nth-child(3)::before {
  content: "beacon";
}

.build-graphic i:nth-child(1)::before {
  content: "idea";
}

.build-graphic i:nth-child(2)::before {
  content: "steps";
}

.build-graphic i:nth-child(3)::before {
  content: "build";
}

.reflect-graphic i:nth-child(1)::before {
  content: "first";
}

.reflect-graphic i:nth-child(2)::before {
  content: "why";
}

.reflect-graphic i:nth-child(3)::before {
  content: "fix";
}

.mission-token-row span,
.sequence-output-graphic span {
  background: #fef3c7;
}

.sequence-output-graphic span {
  background: var(--mint);
}

.scaffold-grid h3,
.activity-card h3 {
  margin: 14px 0 8px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.45rem;
  line-height: 1;
}

.scaffold-grid p,
.activity-card p {
  font-weight: 850;
  line-height: 1.42;
}

.lesson-image {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  border: 4px solid var(--ink);
  border-radius: 16px;
  box-shadow: 3px 4px 0 var(--ink);
  margin: 14px 0;
}

.goal-callout {
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--yellow);
  box-shadow: var(--small-shadow);
  padding: 16px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1;
}

.lesson-workshop {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr);
  gap: 20px;
}

.lesson-workshop.button-builder-workshop {
  grid-template-columns: minmax(320px, 1fr) minmax(360px, 0.82fr);
  align-items: start;
}

.button-builder-workshop .output-card {
  padding: 10px 12px 14px;
}

.lesson-workshop > .activity-card {
  min-width: 0;
}

.sequence-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.sequence-list button {
  display: grid;
  gap: 12px;
  align-items: center;
  justify-items: center;
  width: 100%;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #dbeafe;
  box-shadow: 3px 4px 0 var(--ink);
  padding: 12px;
  cursor: pointer;
  font-weight: 1000;
  text-align: center;
}

.sequence-list button img {
  width: min(100%, 210px);
  aspect-ratio: 1;
  object-fit: cover;
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: #17213a;
}

.sequence-list button span {
  display: grid;
  align-items: center;
  min-height: 2em;
  line-height: 1.15;
}

.sequence-list button.is-picked {
  background: var(--mint);
  transform: translateY(3px);
  box-shadow: 1px 2px 0 var(--ink);
}

.output-card pre {
  margin: 14px 0;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  padding: 16px;
  overflow-x: auto;
}

.student-work-label {
  display: block;
  margin-top: 14px;
  font-weight: 1000;
}

.objectives-box {
  margin: 14px 0;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #dcfce7;
  box-shadow: 3px 4px 0 var(--ink);
  padding: 14px;
}

.objectives-box strong {
  display: block;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.2rem;
}

.objectives-box ul {
  margin: 8px 0 0;
  padding-left: 20px;
}

.objectives-box li {
  font-weight: 850;
  line-height: 1.35;
}

.event-learning-box {
  background: #e0f2fe;
}

.event-flow-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 14px 0;
}

.event-flow-strip span {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: #fef3c7;
  box-shadow: 2px 3px 0 var(--ink);
  padding: 6px 10px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 0.95rem;
  font-weight: 1000;
  line-height: 1;
}

.event-flow-strip span:first-child {
  background: var(--mint);
}

.event-flow-strip span:last-child {
  background: #fed7aa;
}

.magic-button-workshop {
  align-items: start;
  grid-template-columns: minmax(0, 0.92fr) minmax(320px, 0.78fr);
}

.magic-response-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
}

.magic-response-grid .practice-card {
  min-height: 190px;
}

.launch-actions {
  margin-top: 8px;
}

.launch-feedback {
  margin: 8px 0 10px;
  min-height: auto;
  padding: 9px 12px;
}

.magic-button-workshop .story-order-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 8px 0 12px;
}

.magic-button-workshop .story-order-list li {
  display: flex;
  align-items: center;
  min-height: 46px;
  border-width: 3px;
  border-radius: 12px;
  padding: 7px 9px;
  font-size: 0.9rem;
  line-height: 1.1;
}

.magic-button-workshop .story-order-list .empty-story-step {
  grid-column: 1 / -1;
}

.magic-button-workshop .story-order-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 26px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--mint);
  box-shadow: 2px 2px 0 var(--ink);
  margin-right: 8px;
}

.message-challenge-workshop .output-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.message-challenge-workshop .storyboard-card-bank > .eyebrow {
  align-items: center;
  gap: 8px;
  place-self: start;
  width: auto;
  height: auto;
  min-width: 0;
  min-height: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #7fe8a1 0%, #a7f3d0 100%);
  padding: 9px 18px 9px 14px;
}

.message-challenge-workshop .storyboard-card-bank > .eyebrow::before {
  content: "★";
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: #ffe156;
  box-shadow: 2px 2px 0 var(--ink);
  font-size: 0.9rem;
  line-height: 1;
}

.message-challenge-workshop .story-order-list {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 8px;
}

.message-challenge-workshop .story-order-list li {
  display: flex;
  align-items: center;
  min-height: 54px;
  border-width: 3px;
  border-radius: 14px;
  padding: 9px 11px;
  font-size: 0.95rem;
  line-height: 1.12;
}

.message-challenge-workshop .story-order-list .empty-story-step {
  grid-column: 1 / -1;
}

.message-challenge-workshop .story-order-list span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-width: 36px;
  height: 28px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--mint);
  box-shadow: 2px 2px 0 var(--ink);
  margin-right: 9px;
}

.message-challenge-workshop .workspace-actions {
  margin-top: 0;
}

.magic-button-stage {
  position: relative;
  display: grid;
  place-items: center;
  gap: 12px;
  min-height: 330px;
  overflow: hidden;
  margin: 12px 0 18px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background:
    radial-gradient(circle at 18% 18%, rgba(253, 224, 71, 0.5) 0 46px, transparent 47px),
    linear-gradient(135deg, #eef6ff 0%, #dcfce7 100%);
  box-shadow: var(--small-shadow);
  transition:
    background 240ms ease,
    transform 180ms ease;
}

.launch-scene-stage {
  display: block;
  min-height: auto;
  aspect-ratio: 1 / 1;
  background: #dbeafe;
}

.launchpad-scene {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.rocket-scene {
  position: absolute;
  left: 50%;
  bottom: 10%;
  width: min(36%, 220px);
  height: auto;
  transform: translateX(-50%);
  filter: drop-shadow(5px 8px 0 rgba(20, 33, 61, 0.22));
  transition:
    transform 320ms ease,
    filter 240ms ease;
}

.launch-scene-stage.is-launched .rocket-scene {
  filter: drop-shadow(3px 5px 0 rgba(20, 33, 61, 0.18));
  animation: rocket-takeoff 1.25s cubic-bezier(0.45, 0, 0.78, 0.18) forwards;
}

.magic-button-stage.is-running {
  transform: translateY(-2px);
}

.magic-button-trigger {
  width: min(190px, 52vw);
  border: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
  cursor: pointer;
}

.magic-button-trigger:disabled {
  cursor: wait;
}

.magic-button-trigger img {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(6px 8px 0 rgba(20, 33, 61, 0.22));
  transition:
    transform 140ms ease,
    filter 140ms ease;
}

.magic-button-trigger:active img,
.magic-button-stage.is-pressed .magic-button-trigger img,
.magic-button-stage.is-running .magic-button-trigger img {
  transform: translateY(8px) scale(0.96);
  filter: drop-shadow(2px 3px 0 rgba(20, 33, 61, 0.22));
}

.magic-button-stage p {
  position: relative;
  z-index: 3;
  width: min(86%, 460px);
  margin: 0;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: var(--white);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 10px 12px;
  text-align: center;
  font-weight: 1000;
}

.launch-scene-stage .scene-message {
  position: absolute;
  left: auto;
  right: 7%;
  top: 33%;
  bottom: auto;
  transform: rotate(-4deg);
  width: min(42%, 420px);
}

.magic-reveal {
  position: absolute;
  right: 18%;
  top: 18%;
  display: grid;
  place-items: center;
  width: 74px;
  height: 74px;
  border: 4px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: var(--small-shadow);
  color: var(--ink);
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 2rem;
  font-weight: 1000;
  opacity: 0;
  transform: scale(0.4) rotate(-12deg);
  transition:
    opacity 180ms ease,
    transform 220ms ease;
}

.launch-badge {
  left: 50%;
  right: auto;
  top: auto;
  bottom: 4%;
  translate: -50% 0;
  width: auto;
  min-width: 190px;
  height: auto;
  min-height: 56px;
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 1rem;
  text-align: center;
}

.magic-reveal.is-visible {
  opacity: 1;
  transform: scale(1) rotate(-4deg);
}

.magic-sparkles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 180ms ease;
}

.magic-sparkles.is-visible {
  opacity: 1;
}

.magic-sparkles .firework {
  position: absolute;
  display: grid;
  place-items: center;
  width: clamp(42px, 7vw, 82px);
  height: clamp(42px, 7vw, 82px);
  color: #ffe156;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: clamp(2.4rem, 6vw, 5rem);
  font-weight: 1000;
  line-height: 1;
  opacity: 0;
  text-shadow:
    0 5px 0 var(--ink),
    0 0 18px rgba(255, 225, 86, 0.95);
  filter: drop-shadow(0 8px 0 rgba(16, 29, 57, 0.2));
  animation: firework-pop 2.7s ease-in-out infinite;
}

.magic-sparkles.is-visible .firework {
  opacity: 1;
}

.magic-sparkles .firework-one {
  right: 11%;
  top: 9%;
  color: #ffe156;
}

.magic-sparkles .firework-two {
  left: 14%;
  top: 20%;
  color: #ff6b8a;
  font-size: clamp(1.8rem, 4vw, 3.3rem);
  animation-delay: 420ms;
}

.magic-sparkles .firework-three {
  right: 30%;
  top: 31%;
  color: #6ee7ff;
  font-size: clamp(2rem, 4.4vw, 3.6rem);
  animation-delay: 920ms;
}

.magic-sparkles .firework-four {
  left: 60%;
  top: 16%;
  color: #9af5a8;
  font-size: clamp(1.5rem, 3.4vw, 2.8rem);
  animation-delay: 1.35s;
}

.magic-sparkles .firework-five {
  left: 27%;
  top: 38%;
  color: #ffb86c;
  font-size: clamp(1.7rem, 3.6vw, 3.1rem);
  animation-delay: 1.75s;
}

.magic-sparkles .firework-six {
  right: 17%;
  top: 48%;
  color: #caa8ff;
  font-size: clamp(1.9rem, 4.2vw, 3.5rem);
  animation-delay: 2.05s;
}

.magic-sparkles .firework-seven {
  left: 58%;
  top: 22%;
  color: #fff176;
  font-size: clamp(1.4rem, 3.2vw, 2.7rem);
  animation-delay: 2.35s;
}

.magic-sparkles .firework-eight {
  left: 8%;
  top: 43%;
  color: #7cf6d4;
  font-size: clamp(1.1rem, 2.8vw, 2.2rem);
  animation-delay: 610ms;
}

.magic-sparkles .firework-nine {
  right: 8%;
  top: 36%;
  color: #ff7ac8;
  font-size: clamp(1rem, 2.6vw, 2rem);
  animation-delay: 1.15s;
}

.magic-sparkles .firework-ten {
  left: 35%;
  top: 9%;
  color: #7aa8ff;
  font-size: clamp(1.05rem, 2.7vw, 2.1rem);
  animation-delay: 1.9s;
}

.magic-sparkles .firework-eleven {
  right: 40%;
  top: 43%;
  color: #ffde59;
  font-size: clamp(1.1rem, 2.8vw, 2.2rem);
  animation-delay: 2.55s;
}

.workspace-subtitle {
  margin: 10px 0;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.25rem;
}

@keyframes magic-pop {
  from {
    transform: translateY(0) scale(1) rotate(8deg);
  }
  to {
    transform: translateY(-8px) scale(1.08) rotate(-5deg);
  }
}

@keyframes sparkle-bounce {
  from {
    transform: translateY(0) scale(0.9);
  }
  to {
    transform: translateY(-14px) scale(1.15);
  }
}

@keyframes firework-pop {
  0%,
  20% {
    opacity: 0;
    transform: translateY(10px) scale(0.35) rotate(-12deg);
  }

  36%,
  72% {
    opacity: 1;
    transform: translateY(0) scale(1) rotate(8deg);
  }

  100% {
    opacity: 0;
    transform: translateY(-12px) scale(1.18) rotate(-10deg);
  }
}

@keyframes rocket-takeoff {
  0% {
    transform: translate(-50%, 0) scale(1);
  }
  35% {
    transform: translate(-50%, -32%) scale(1.04);
  }
  100% {
    transform: translate(-50%, -125vh) scale(1.08);
  }
}

.robot-test-stage {
  position: relative;
  overflow: hidden;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #0f1a33;
  box-shadow: var(--small-shadow);
}

.classroom-map {
  display: block;
  width: 100%;
  height: auto;
}

.robot-actor {
  position: absolute;
  left: 21%;
  top: 48.5%;
  width: clamp(66px, 10.5%, 118px);
  height: auto;
  object-fit: contain;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 7px 0 rgba(15, 26, 51, 0.35));
  transition: left 650ms ease, top 650ms ease, transform 180ms ease, filter 180ms ease;
  z-index: 2;
}

.star-actor {
  position: absolute;
  left: 80.9%;
  top: 70.8%;
  width: clamp(30px, 4.8%, 56px);
  height: auto;
  object-fit: contain;
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 5px 0 rgba(15, 26, 51, 0.35));
  transition: left 650ms ease, top 650ms ease, transform 220ms ease, filter 220ms ease;
  z-index: 3;
}

.star-actor.is-carried {
  animation: star-victory-dance 760ms ease-in-out infinite;
  filter: drop-shadow(0 0 8px rgba(255, 224, 82, 0.95)) drop-shadow(0 5px 0 rgba(15, 26, 51, 0.35));
  z-index: 4;
}

@keyframes star-victory-dance {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1.08) rotate(-8deg);
  }

  25% {
    transform: translate(-50%, -58%) scale(1.2) rotate(8deg);
  }

  50% {
    transform: translate(-50%, -50%) scale(1.12) rotate(14deg);
  }

  75% {
    transform: translate(-50%, -42%) scale(1.18) rotate(-14deg);
  }
}

.robot-actor.is-bumped {
  transform: translate(-50%, -50%) rotate(-8deg) scale(1.04);
  filter: drop-shadow(0 0 8px rgba(255, 91, 91, 0.85)) drop-shadow(0 7px 0 rgba(15, 26, 51, 0.35));
}

.robot-actor.is-celebrating {
  transform: translate(-50%, -50%) scale(1.14);
  filter: drop-shadow(0 0 10px rgba(255, 224, 82, 0.95)) drop-shadow(0 7px 0 rgba(15, 26, 51, 0.35));
}

.robot-test-status {
  margin: 12px 0 0;
  border: 4px dashed var(--ink);
  border-radius: 14px;
  background: #ecfeff;
  padding: 10px 12px;
  font-weight: 1000;
}

.step-input-list {
  display: grid;
  gap: 10px;
  margin: 8px 0 14px;
}

.step-input-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
}

.step-input-row span {
  min-width: 38px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: var(--yellow);
  box-shadow: 2px 3px 0 var(--ink);
  padding: 8px 6px;
  text-align: center;
  font-weight: 1000;
}

.robot-step-input {
  width: 100%;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fffdf6;
  color: var(--ink);
  padding: 12px 14px;
  font: 1rem/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  outline: none;
}

.workspace-actions {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin: 12px 0 14px;
}

.workspace-actions .secondary-button {
  flex: 0 1 auto;
}

.run-robot-button {
  background: #a7f3d0;
}

.reset-robot-button {
  background: #e0e7ff;
}

.workspace-actions button:disabled {
  cursor: wait;
  opacity: 0.68;
  transform: none;
}

.activity-feedback {
  min-height: 34px;
  border: 4px dashed var(--ink);
  border-radius: 14px;
  background: #ecfeff;
  padding: 12px;
}

.ai-grader-report {
  margin-top: 14px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #fff7cc;
  box-shadow: var(--small-shadow);
  padding: 16px;
}

.ai-grader-report[hidden] {
  display: none;
}

.ai-grader-report strong {
  display: block;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.35rem;
}

.ai-grader-report p {
  margin: 10px 0;
  font-size: 1.15rem;
}

.ai-grader-report ul {
  margin: 0;
  padding-left: 20px;
}

.storyboard-card-bank {
  display: grid;
  gap: 16px;
  min-width: 0;
  overflow: hidden;
}

.syntax-sandwich-card-bank p {
  max-width: 760px;
}

.syntax-role-strip,
.sandwich-mission-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0;
}

.syntax-role-strip div {
  display: grid;
  grid-template-columns: 54px 1fr;
  grid-template-areas:
    "icon title"
    "icon hint";
  align-items: center;
  min-height: 84px;
  padding: 10px 12px;
  border: 5px solid var(--ink);
  border-radius: 22px;
  background: #fff8cf;
  box-shadow: 5px 5px 0 var(--ink);
}

.syntax-role-strip img,
.syntax-role-strip .ingredient-filling-stack {
  grid-area: icon;
  width: 50px;
  height: 48px;
}

.syntax-role-strip strong {
  grid-area: title;
  font-size: clamp(1rem, 1.4vw, 1.25rem);
  line-height: 1.05;
}

.syntax-role-strip span:not(.ingredient-filling-stack) {
  grid-area: hint;
  color: #4b5563;
  font-weight: 900;
  font-size: 0.95rem;
}

.sandwich-mission-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sandwich-mission-button {
  min-height: 66px;
  padding: 10px 14px;
  border: 5px solid var(--ink);
  border-radius: 24px;
  background: #dbeafe;
  box-shadow: 6px 6px 0 var(--ink);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  font-weight: 900;
}

.sandwich-mission-button.is-selected {
  background: #a7f3d0;
}

.syntax-ingredient-scene {
  margin: 18px 0 8px;
}

.syntax-fridge-wrap {
  position: relative;
  width: min(100%, 680px);
  margin: 0 auto;
}

.syntax-fridge {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
  filter: drop-shadow(8px 8px 0 var(--ink));
}

.ingredient-filling-stack {
  display: grid;
  place-items: center;
}

.ingredient-filling-stack img {
  grid-area: 1 / 1;
  width: 50px;
  max-height: 48px;
  object-fit: contain;
}

.ingredient-filling-stack img:nth-child(2) {
  transform: translateY(10px);
}

.ingredient-filling-stack img:nth-child(3) {
  transform: translateY(20px);
}

.ingredient-bottom-bread {
  transform: rotate(180deg);
}

.fridge-hotspot {
  position: absolute;
  display: grid;
  place-items: center;
  min-width: 78px;
  min-height: 42px;
  padding: 6px 10px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: rgba(167, 243, 208, 0.92);
  box-shadow: 4px 4px 0 var(--ink);
  color: var(--ink);
  cursor: grab;
  font: inherit;
  font-size: clamp(0.8rem, 1vw, 1rem);
  font-weight: 900;
}

.fridge-hotspot:hover,
.fridge-hotspot:focus-visible {
  background: #fde68a;
  transform: translateY(-2px);
}

.fridge-hotspot:active,
.fridge-hotspot.is-dragging {
  cursor: grabbing;
  background: #ffdf45;
  transform: translateY(-4px) scale(1.04);
  z-index: 5;
}

.fridge-hotspot.is-picked {
  background: #dbeafe;
}

.fridge-hotspot:disabled {
  cursor: default;
  opacity: 0.55;
  transform: none;
}

.fridge-hotspot-bread {
  left: 26%;
  top: 24%;
}

.fridge-hotspot-ham {
  left: 22%;
  top: 42%;
}

.fridge-hotspot-cheese {
  left: 46%;
  top: 42%;
}

.fridge-hotspot-lettuce {
  left: 24%;
  top: 56%;
}

.fridge-hotspot-tomato {
  left: 48%;
  top: 56%;
}

.fridge-hotspot-pickle {
  left: 23%;
  top: 70%;
}

.fridge-hotspot-bacon {
  left: 48%;
  top: 70%;
}

.fridge-hotspot-ketchup {
  left: 75%;
  top: 29%;
}

.syntax-card-grid {
  grid-template-columns: repeat(3, minmax(170px, 1fr));
}

.syntax-card {
  min-height: 230px;
}

.syntax-sandwich-preview {
  display: grid;
  grid-template-columns: minmax(180px, 0.9fr) minmax(220px, 1.1fr);
  gap: 18px;
  align-items: stretch;
  margin: 18px 0;
}

.syntax-output-card .syntax-sandwich-preview {
  grid-template-columns: 1fr;
  margin-top: 22px;
}

.syntax-output-card .workspace-actions {
  margin-top: 16px;
}

.syntax-sandwich-stack,
.syntax-code-preview {
  min-height: 260px;
  border: 6px solid var(--ink);
  border-radius: 24px;
  background: #fff8cf;
  box-shadow: 8px 8px 0 var(--ink);
}

.syntax-sandwich-stack {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0;
  padding: 18px;
  overflow: hidden;
  transition: background 180ms ease, box-shadow 180ms ease, outline-color 180ms ease;
}

.syntax-output-card .syntax-sandwich-stack {
  min-height: clamp(340px, 36vw, 500px);
  background: #fff;
}

.syntax-sandwich-stack.is-drop-ready {
  outline: 6px dashed #7ee8a3;
  outline-offset: -16px;
  background: #ecfff3;
  box-shadow: 8px 8px 0 var(--ink), inset 0 0 0 10px rgba(126, 232, 163, 0.32);
}

.syntax-sandwich-stack.is-drop-ready::before {
  content: "Drop it on the plate";
  position: absolute;
  z-index: 4;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 16px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #ffdf45;
  box-shadow: 4px 4px 0 var(--ink);
  color: var(--ink);
  font-weight: 900;
  pointer-events: none;
}

.syntax-sandwich-stack.is-drop-ready .sandwich-build {
  transform: scale(1.02);
}

.syntax-output-card .syntax-code-preview {
  min-height: 130px;
  font-size: clamp(0.92rem, 1.45vw, 1.1rem);
}

.syntax-sandwich-stack .empty-story-step {
  margin: 0;
  text-align: center;
}

.sandwich-build {
  position: relative;
  width: min(100%, 470px);
  min-height: 420px;
  display: grid;
  place-items: center;
}

.sandwich-build.is-empty {
  display: block;
}

.sandwich-build.is-empty .empty-story-step {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 200px;
  transform: translateX(-50%);
  max-width: none;
  white-space: nowrap;
}

.sandwich-layers {
  position: absolute;
  left: 50%;
  bottom: 92px;
  z-index: 2;
  width: min(64%, 290px);
  transform: translateX(-50%);
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
}

.sandwich-piece,
.sandwich-fillings {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  margin-bottom: -10px;
}

/* In column-reverse the first child is the physically lowest piece; its
   negative margin only overflows the box and skews vertical centering. */
.sandwich-layers > :first-child {
  margin-bottom: 0;
}

.sandwich-plate {
  position: absolute;
  left: 50%;
  bottom: 26px;
  z-index: 1;
  width: min(94%, 440px);
  height: auto;
  transform: translateX(-50%);
  object-fit: contain;
  filter: drop-shadow(0 8px 0 rgba(20, 33, 61, 0.12));
}

.sandwich-piece img {
  width: 100%;
  max-height: 228px;
  object-fit: contain;
}

.sandwich-piece svg {
  display: block;
  width: 100%;
  height: auto;
  filter: drop-shadow(2px 3px 0 rgba(20, 33, 61, 0.25));
}

.sandwich-filling svg {
  width: 88%;
}

.sandwich-filling img {
  width: 126%;
  max-height: 164px;
}

.sandwich-filling:has(img[src*="ketchup"]) img {
  max-height: 168px;
}

.sandwich-bottom img {
  transform: rotate(0deg);
}

.sandwich-fillings {
  grid-template-columns: repeat(3, 1fr);
  width: min(100%, 250px);
  padding: 4px 0;
}

.sandwich-fillings img {
  width: 86px;
  height: 62px;
  object-fit: contain;
}

.sandwich-piece span,
.sandwich-fillings span {
  display: none;
}

.sandwich-fillings span {
  bottom: -6px;
  background: #dbeafe;
}

.syntax-code-preview {
  margin: 0;
  padding: 24px;
  background: #101d39;
  color: #bdf8d0;
  font-family: "Courier New", monospace;
  font-size: clamp(1rem, 1.8vw, 1.55rem);
  line-height: 1.55;
  white-space: pre-wrap;
}

.story-challenge-intro {
  display: grid;
  grid-template-columns: minmax(220px, 0.85fr) minmax(260px, 1fr);
  gap: 16px;
  align-items: stretch;
  min-width: 0;
}

.story-challenge-copy {
  display: grid;
  align-content: center;
  gap: 12px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #fff7cc;
  box-shadow: var(--small-shadow);
  padding: 18px;
}

.story-challenge-copy .eyebrow {
  max-width: max-content;
}

.story-challenge-copy h3,
.story-challenge-copy p {
  margin: 0;
}

.storyboard-workshop[hidden],
.activity-card[hidden] {
  display: none;
}

.practice-story {
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #eef2ff;
  box-shadow: var(--small-shadow);
  padding: 16px;
}

.practice-story h4 {
  margin: 0;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.35rem;
}

.practice-story p {
  margin: 6px 0 12px;
}

.practice-story-grid {
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
}

.practice-card {
  min-height: 238px;
  background: #dcfce7;
}

.story-card-image {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  margin-bottom: 12px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fff;
  box-shadow: 3px 4px 0 var(--ink);
}

.practice-order-list {
  margin-top: 12px;
}

.storyboard-preview {
  min-height: 190px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.68), rgba(255, 255, 255, 0.68)),
    repeating-linear-gradient(90deg, rgba(16, 24, 39, 0.08) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(0deg, rgba(16, 24, 39, 0.08) 0 1px, transparent 1px 52px),
    #dbeafe;
  box-shadow: var(--small-shadow);
  padding: 18px;
  display: grid;
  place-items: center;
}

.storyboard-preview .story-sentence-box {
  width: 100%;
  min-height: 160px;
}

.story-display-pill {
  font-size: 1.05rem;
}

.story-scene {
  width: min(100%, 420px);
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #fffdf6;
  box-shadow: 5px 7px 0 var(--ink);
  padding: 18px;
  text-align: center;
}

.scene-icon {
  min-height: 66px;
  display: grid;
  place-items: center;
  width: fit-content;
  min-width: 112px;
  margin: 0 auto 12px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 8px 16px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.15rem;
  font-weight: 1000;
}

.story-scene strong {
  display: block;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.5rem;
}

.story-scene p {
  margin: 8px 0 0;
}

.story-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
}

.adventure-card-grid {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px;
  justify-items: center;
}

.story-card {
  min-height: 148px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #fff7cc;
  color: var(--ink);
  box-shadow: var(--small-shadow);
  padding: 14px;
  text-align: left;
  cursor: pointer;
}

.image-story-card {
  min-height: 0;
  width: min(85%, 165px);
  border: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
  overflow: hidden;
}

.adventure-card-image {
  aspect-ratio: 2 / 3;
  margin: 0;
  border: 0;
  border-radius: 14px;
  box-shadow: none;
  background: transparent;
  object-fit: cover;
}

.image-story-card span,
.image-story-card strong,
.image-story-card small {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.story-card span,
.story-order-list span {
  display: inline-grid;
  place-items: center;
  min-width: 54px;
  min-height: 34px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: #a7f3d0;
  margin-bottom: 8px;
  padding: 4px 9px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
}

.story-card strong {
  display: block;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.12rem;
}

.story-card small {
  display: block;
  margin-top: 6px;
  font-weight: 850;
  line-height: 1.25;
}

.story-card.is-picked,
.story-card:disabled {
  background: #e0e7ff;
  cursor: default;
  opacity: 0.72;
  transform: translate(3px, 3px);
  box-shadow: none;
}

.story-order-list {
  display: grid;
  gap: 10px;
  margin: 14px 0;
  padding: 0;
  list-style-position: inside;
}

.story-order-list li {
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fffdf6;
  box-shadow: 2px 3px 0 var(--ink);
  padding: 12px;
  font-weight: 1000;
}

.story-order-list span {
  margin: 0 8px 0 0;
}

.story-test-panel {
  display: grid;
  gap: 12px;
  margin-top: 16px;
  border: 5px solid var(--ink);
  border-radius: 20px;
  background: #f8fafc;
  box-shadow: var(--small-shadow);
  padding: 16px;
}

.story-test-panel .workspace-actions {
  margin: 0;
}

.story-test-panel .activity-feedback {
  margin: 0;
}

.story-sentence-box {
  margin-top: 0;
  border: 4px solid var(--ink);
  border-radius: 18px;
  background: #fffdf6;
  box-shadow: 3px 4px 0 var(--ink);
  padding: 16px;
}

.story-sentence-box strong {
  display: block;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.story-sentence-list {
  display: block;
  margin: 0;
  padding: 0;
  font-weight: 900;
  line-height: 1.45;
}

.story-sentence {
  border-radius: 10px;
  padding: 2px 4px;
  transition:
    background 180ms ease,
    color 180ms ease;
}

.story-sentence + .story-sentence {
  margin-left: 4px;
}

.story-sentence.is-active {
  background: var(--yellow);
  color: var(--ink);
}

.story-sentence.is-read {
  color: #2563eb;
}

.story-sentence-box.is-complete {
  border-color: #047857;
  background: #dcfce7;
  color: #064e3b;
}

.empty-story-step {
  list-style: none;
  color: rgba(16, 24, 39, 0.7);
}

.builder-label {
  display: grid;
  gap: 8px;
  margin: 12px 0;
  font-weight: 1000;
}

.builder-label input,
.builder-label select {
  width: 100%;
  min-height: 52px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fffdf6;
  color: var(--ink);
  padding: 10px 12px;
  font: inherit;
  font-weight: 900;
  outline: none;
}

.button-preview {
  display: grid;
  gap: 16px;
  place-items: center;
  min-height: 260px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #eef2ff;
  box-shadow: var(--small-shadow);
  padding: 20px;
  text-align: center;
}

.chalkboard-preview {
  position: relative;
  width: min(92%, 520px);
  min-height: auto;
  aspect-ratio: 1;
  overflow: visible;
  margin: 0 auto;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
}

.chalkboard-preview img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  transform: none;
  transform-origin: center center;
}

.chalkboard-preview p,
.chalkboard-preview strong {
  position: absolute;
  left: 50%;
  z-index: 2;
  width: min(72%, 620px);
  color: var(--chalk-color, #f8fafc);
  font-family: "Schoolbell", "Comic Sans MS", "Marker Felt", cursive;
  font-weight: 700;
  line-height: 1.05;
  text-shadow:
    0 2px 0 rgba(16, 29, 57, 0.8),
    0 0 10px rgba(255, 255, 255, 0.34);
}

.chalkboard-preview p {
  top: 35%;
  transform: translate(-50%, -50%);
  font-size: clamp(1.5rem, 2.8vw, 2.35rem);
}

.chalkboard-preview strong {
  top: 58%;
  transform: translateX(-50%);
  font-size: clamp(1rem, 2.1vw, 1.75rem);
}

.challenge-chalkboard-preview {
  width: min(100%, 620px);
  aspect-ratio: 1;
  overflow: hidden;
  margin: 0 auto 12px;
}

.message-challenge-workshop .challenge-chalkboard-preview img {
  width: 108%;
  height: 108%;
  object-fit: contain;
  transform: translate(-4%, -4%);
}

.challenge-chalkboard-preview p {
  top: 36%;
  width: min(64%, 390px);
  font-family: "DK Crayon Crumble", "Schoolbell", "Comic Sans MS", "Marker Felt", cursive;
  font-size: clamp(1.25rem, 2.45vw, 2rem);
  text-align: center;
}

.challenge-chalkboard-preview strong {
  top: 58%;
  width: min(58%, 340px);
  font-family: "DK Crayon Crumble", "Schoolbell", "Comic Sans MS", "Marker Felt", cursive;
  font-size: clamp(1rem, 1.9vw, 1.45rem);
  text-align: center;
}

.challenge-chalkboard-preview.has-greeting-bubble p {
  left: 37%;
  top: 29%;
  z-index: 3;
  width: auto;
  max-width: min(42%, 280px);
  padding: 0.55em 0.85em 0.6em;
  border: 4px solid var(--chalk-color, #f8fafc);
  border-radius: 999px;
  background: rgba(24, 49, 43, 0.82);
  transform: translate(-50%, -50%) rotate(-2deg);
  line-height: 1;
  filter: drop-shadow(0 3px 0 rgba(16, 29, 57, 0.65));
}

.challenge-chalkboard-preview.has-greeting-bubble p::after {
  content: "";
  position: absolute;
  right: 11%;
  bottom: -0.62em;
  width: 1em;
  height: 1em;
  border-right: 4px solid var(--chalk-color, #f8fafc);
  border-bottom: 4px solid var(--chalk-color, #f8fafc);
  background: rgba(24, 49, 43, 0.82);
  transform: rotate(38deg);
}

.challenge-chalkboard-preview.has-greeting-bubble strong {
  top: 58%;
}

.challenge-chalkboard-preview.has-chalk-border::before {
  content: "";
  position: absolute;
  left: 24%;
  top: 29%;
  z-index: 2;
  width: 52%;
  height: 42%;
  border: 4px dashed var(--chalk-color, #f8fafc);
  border-radius: 18px;
  opacity: 0.92;
  pointer-events: none;
  filter: drop-shadow(0 2px 0 rgba(16, 29, 57, 0.55));
}

.challenge-chalkboard-preview.has-smiley-face::after {
  content: "";
  position: absolute;
  right: 24%;
  bottom: 25%;
  z-index: 2;
  width: clamp(50px, 9vw, 86px);
  aspect-ratio: 1;
  background: url("assets/images/chalk_face.png") center / contain no-repeat;
  transform: rotate(-4deg);
  filter: drop-shadow(0 2px 0 rgba(16, 29, 57, 0.7));
  pointer-events: none;
}

.chalkboard-stars {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0;
  transition: opacity 180ms ease;
}

.chalkboard-stars.is-visible {
  opacity: 1;
}

.chalkboard-stars .chalk-star,
.chalkboard-stars .chalk-confetti {
  position: absolute;
  display: none;
  opacity: 0;
}

.chalkboard-stars .chalk-star {
  color: #ffe156;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: clamp(1.8rem, 5vw, 4.2rem);
  font-weight: 1000;
  line-height: 1;
  text-shadow:
    0 5px 0 var(--ink),
    0 0 18px rgba(255, 225, 86, 0.95);
  animation: firework-pop 2.7s ease-in-out infinite;
}

.chalkboard-stars .chalk-confetti {
  width: clamp(10px, 1.6vw, 18px);
  height: clamp(18px, 2.4vw, 28px);
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: #ff6b8a;
  box-shadow: var(--small-shadow);
  top: -12%;
  animation: confetti-fall 2.7s ease-in infinite;
  animation-fill-mode: both;
}

.chalkboard-stars.is-visible.show-stars .chalk-star,
.chalkboard-stars.is-visible.show-confetti .chalk-confetti {
  display: block;
  opacity: 1;
}

.chalkboard-stars .chalk-star-one {
  left: 12%;
  top: 12%;
  color: #ff6b8a;
}

.chalkboard-stars .chalk-star-two {
  right: 15%;
  top: 16%;
  color: #6ee7ff;
  animation-delay: 420ms;
}

.chalkboard-stars .chalk-star-three {
  left: 20%;
  bottom: 16%;
  color: #9af5a8;
  animation-delay: 860ms;
}

.chalkboard-stars .chalk-star-four {
  right: 22%;
  bottom: 18%;
  color: #ffb86c;
  animation-delay: 1.2s;
}

.chalkboard-stars .chalk-star-five {
  left: 50%;
  top: 10%;
  color: #caa8ff;
  font-size: clamp(1.25rem, 3.4vw, 2.8rem);
  animation-delay: 1.7s;
}

.chalkboard-stars .chalk-star-six {
  right: 8%;
  top: 47%;
  color: #ffde59;
  font-size: clamp(1.35rem, 3.6vw, 3rem);
  animation-delay: 2.2s;
}

.chalkboard-stars .chalk-confetti-one {
  left: 9%;
  background: #6ee7ff;
  --drift: 34px;
  --spin: 180deg;
}

.chalkboard-stars .chalk-confetti-two {
  left: 24%;
  background: #f9a8d4;
  --drift: -28px;
  --spin: -220deg;
  animation-delay: 220ms;
}

.chalkboard-stars .chalk-confetti-three {
  left: 40%;
  background: #a7f3d0;
  --drift: 24px;
  --spin: 260deg;
  animation-delay: 480ms;
}

.chalkboard-stars .chalk-confetti-four {
  left: 57%;
  background: #ffb86c;
  --drift: -34px;
  --spin: -180deg;
  animation-delay: 720ms;
}

.chalkboard-stars .chalk-confetti-five {
  left: 72%;
  background: #caa8ff;
  --drift: 22px;
  --spin: 300deg;
  animation-delay: 980ms;
}

.chalkboard-stars .chalk-confetti-six {
  left: 86%;
  background: #ffe252;
  --drift: -26px;
  --spin: -280deg;
  animation-delay: 1.22s;
}

@keyframes confetti-fall {
  0% {
    opacity: 0;
    transform: translate(0, 0) rotate(0deg) scale(0.9);
  }

  12% {
    opacity: 1;
  }

  78% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate(var(--drift, 20px), var(--fall-distance, 1180%)) rotate(var(--spin, 220deg)) scale(1);
  }
}

.built-button {
  min-width: 220px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #a7f3d0;
  box-shadow: var(--small-shadow);
  color: var(--ink);
  padding: 18px 22px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.25rem;
  font-weight: 1000;
}

.button-preview p,
.button-preview strong {
  margin: 0;
}

.button-preview:not(.chalkboard-preview) strong {
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.5rem;
}

.level-preview {
  display: grid;
  gap: 16px;
  min-height: 260px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background:
    linear-gradient(90deg, rgba(20, 33, 61, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(20, 33, 61, 0.07) 1px, transparent 1px),
    #eef2ff;
  background-size: 34px 34px;
  box-shadow: var(--small-shadow);
  padding: 20px;
}

.level-track {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  align-items: stretch;
}

.level-tile {
  min-height: 116px;
  display: grid;
  place-items: center;
  border: 5px solid var(--ink);
  border-radius: 18px;
  box-shadow: 3px 4px 0 var(--ink);
  padding: 12px;
  text-align: center;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 1000;
  line-height: 1.05;
}

.level-player {
  background: #a7f3d0;
}

.level-obstacle {
  background: #fed7aa;
}

.level-goal {
  background: #fde047;
}

.level-message {
  margin: 0;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #fffdf6;
  box-shadow: 2px 3px 0 var(--ink);
  padding: 14px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.35rem;
  font-weight: 1000;
  text-align: center;
}

.repeat-preview {
  display: grid;
  gap: 16px;
  min-height: 260px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #eef2ff;
  box-shadow: var(--small-shadow);
  padding: 20px;
}

.repeat-track {
  display: flex;
  align-content: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  min-height: 130px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background:
    linear-gradient(90deg, rgba(20, 33, 61, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(20, 33, 61, 0.07) 1px, transparent 1px),
    #fffdf6;
  background-size: 30px 30px;
  padding: 14px;
}

.repeat-token {
  display: inline-grid;
  place-items: center;
  min-height: 52px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #a7f3d0;
  box-shadow: 2px 3px 0 var(--ink);
  padding: 10px 14px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
}

.capstone-preview {
  display: grid;
  gap: 14px;
  min-height: 300px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background:
    linear-gradient(90deg, rgba(20, 33, 61, 0.07) 1px, transparent 1px),
    linear-gradient(rgba(20, 33, 61, 0.07) 1px, transparent 1px),
    #eef2ff;
  background-size: 32px 32px;
  box-shadow: var(--small-shadow);
  padding: 20px;
}

.capstone-preview h3 {
  margin: 0;
}

.capstone-preview ol {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 22px;
}

.capstone-preview li {
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fffdf6;
  box-shadow: 2px 3px 0 var(--ink);
  padding: 10px 12px;
  font-weight: 1000;
}

.capstone-program-workshop {
  grid-template-columns: minmax(330px, 0.82fr) minmax(430px, 1fr);
  align-items: start;
}

.mini-program-bank {
  display: grid;
  gap: 14px;
}

.mini-program-objectives {
  margin: 0;
}

.program-block-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.program-block {
  min-height: 136px;
  background: #eef2ff;
  touch-action: none;
}

.program-block:nth-child(2n) {
  background: #fff7cc;
}

.program-block:nth-child(3n) {
  background: #dcfce7;
}

.program-block.is-dragging {
  opacity: 0.55;
  transform: rotate(-1deg) translateY(4px);
}

.program-block:disabled {
  pointer-events: none;
}

.mini-program-output h4 {
  margin: 14px 0 0;
  font-size: 1.15rem;
}

.mini-program-stage {
  position: relative;
  min-height: clamp(260px, 32vw, 390px);
  overflow: hidden;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #0f172a;
  box-shadow: var(--small-shadow);
}

.mini-program-room {
  display: block;
  width: 100%;
  height: 100%;
  min-height: inherit;
  object-fit: cover;
}

.mini-program-robot,
.mini-program-star {
  position: absolute;
  display: block;
  filter: drop-shadow(3px 5px 0 rgba(15, 23, 42, 0.24));
  transition: transform 700ms ease, opacity 300ms ease;
  pointer-events: none;
}

.mini-program-robot {
  left: 20%;
  top: 48%;
  width: clamp(54px, 9vw, 96px);
  transform: translate(-50%, -50%);
  z-index: 3;
}

.mini-program-star {
  right: 14%;
  bottom: 17%;
  width: clamp(42px, 7vw, 74px);
  z-index: 2;
}

.mini-program-message {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  margin: 0;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #fff7cc;
  box-shadow: 2px 3px 0 var(--ink);
  padding: 10px 14px;
  text-align: center;
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
  z-index: 4;
}

.capstone-drop-zone {
  min-height: 180px;
  border: 4px dashed var(--ink);
  border-radius: 18px;
  background:
    linear-gradient(90deg, rgba(20, 33, 61, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(20, 33, 61, 0.06) 1px, transparent 1px),
    #f8fafc;
  background-size: 28px 28px;
  padding: 12px;
}

.capstone-drop-zone.is-drop-ready {
  background:
    linear-gradient(90deg, rgba(20, 33, 61, 0.06) 1px, transparent 1px),
    linear-gradient(rgba(20, 33, 61, 0.06) 1px, transparent 1px),
    #dcfce7;
}

.mini-program-stage.has-program-bug .mini-program-robot {
  animation: robotBugShake 420ms ease;
}

.mini-program-stage.is-program-ready .mini-program-robot {
  transform: translate(430%, 170%) scale(1.05);
}

.mini-program-stage.is-program-ready .mini-program-star {
  opacity: 0;
  transform: translate(-34px, -42px) scale(0.85);
}

.mini-program-stage.is-program-ready::after {
  content: "Program works!";
  position: absolute;
  top: 18px;
  right: 18px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #ffb347;
  box-shadow: 2px 3px 0 var(--ink);
  padding: 10px 14px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
  z-index: 5;
}

@keyframes robotBugShake {
  0%,
  100% {
    transform: translate(-50%, -50%);
  }
  30% {
    transform: translate(calc(-50% - 10px), -50%) rotate(-4deg);
  }
  60% {
    transform: translate(calc(-50% + 10px), -50%) rotate(4deg);
  }
}

.variable-preview {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  min-height: 260px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #eef2ff;
  box-shadow: var(--small-shadow);
  padding: 20px;
}

.variable-card {
  display: grid;
  place-items: center;
  gap: 10px;
  min-height: 150px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #fff7cc;
  box-shadow: 3px 4px 0 var(--ink);
  padding: 16px;
  text-align: center;
}

.variable-card span {
  display: inline-grid;
  place-items: center;
  min-height: 34px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: #a7f3d0;
  padding: 4px 10px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
}

.variable-card strong {
  overflow-wrap: anywhere;
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: clamp(1.25rem, 3vw, 2rem);
  line-height: 1;
}

.variable-preview .level-message {
  grid-column: 1 / -1;
}

.profile-preview {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.game-state-preview {
  grid-template-columns: repeat(auto-fit, minmax(135px, 1fr));
}

.color-swatch-card {
  transition: background 180ms ease, transform 180ms ease;
}

.color-swatch-card strong {
  color: var(--ink);
  text-transform: capitalize;
}

.switch-room {
  display: grid;
  place-items: center;
  min-height: 150px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  box-shadow: 3px 4px 0 var(--ink);
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: clamp(1.4rem, 3vw, 2.3rem);
  font-weight: 1000;
  text-align: center;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.switch-room.is-on {
  background: #fff176;
  color: var(--ink);
}

.switch-room.is-off {
  background: #17213a;
  color: #f8fafc;
}

.playground-section {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(300px, 0.55fr) minmax(320px, 0.75fr);
  gap: 20px;
  align-items: stretch;
  background: #dbeafe;
  border-block: 5px solid var(--ink);
}

.quest-builder,
.quest-output {
  background: var(--white);
  padding: 20px;
}

.quest-builder {
  display: grid;
  gap: 14px;
}

.quest-builder label {
  display: grid;
  gap: 7px;
  font-weight: 1000;
}

.quest-builder input,
.quest-builder select {
  width: 100%;
  min-height: 50px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fffdf6;
  color: var(--ink);
  padding: 10px 12px;
  outline: none;
}

.quest-output pre {
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  padding: 16px;
  overflow-x: auto;
}

.code-studio-editor {
  display: grid;
  gap: 14px;
}

.code-console-workshop {
  grid-template-columns: minmax(320px, 0.78fr) minmax(420px, 1.22fr);
  align-items: start;
}

.command-library-card,
.console-interface-card {
  display: grid;
  align-content: start;
  gap: 14px;
}

.string-example {
  display: grid;
  gap: 10px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--yellow);
  box-shadow: var(--small-shadow);
  padding: 16px;
}

.string-example span {
  width: fit-content;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--mint);
  box-shadow: 3px 4px 0 var(--ink);
  padding: 6px 14px;
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
}

.string-example code,
.code-command-card code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-weight: 900;
}

.string-example code {
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.code-command-list {
  display: grid;
  gap: 14px;
}

.code-command-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px 14px;
  align-items: center;
  width: 100%;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: #fff8c9;
  box-shadow: var(--small-shadow);
  color: var(--ink);
  padding: 14px;
  text-align: left;
  cursor: pointer;
}

.code-command-card:hover,
.code-command-card:focus-visible {
  transform: translateY(-2px);
  background: var(--mint);
}

.code-command-card span {
  display: grid;
  grid-row: span 2;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: var(--yellow);
  box-shadow: 3px 4px 0 var(--ink);
  font-family: "Fredoka", system-ui, sans-serif;
  font-weight: 1000;
}

.code-command-card strong {
  font-family: "Fredoka", system-ui, sans-serif;
  font-size: 1.08rem;
  line-height: 1.05;
}

.code-command-card code {
  color: #14532d;
  font-size: 0.96rem;
  line-height: 1.25;
  overflow-wrap: anywhere;
}

.console-result-panel {
  display: grid;
  gap: 10px;
}

.code-studio-editor textarea {
  width: 100%;
  min-height: 260px;
  resize: vertical;
  border: 5px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  box-shadow: var(--small-shadow);
  padding: 18px;
  font: 800 1.05rem/1.55 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  outline: none;
}

.code-studio-editor textarea:focus {
  border-color: var(--coral);
}

.code-output-list li span {
  background: var(--sky);
}

.start-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: var(--mint);
}

@media (max-width: 1080px) {
  .hero-section,
  .playground-section,
  .lesson-hero,
  .pathway-overview-hero,
  .pathway-metaphor-card,
  .lesson-workshop,
  .capstone-program-workshop {
    grid-template-columns: 1fr;
  }

  .pathway-grid,
  .pathway-map-grid,
  .project-grid,
  .scaffold-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-section {
    gap: 18px;
    padding-top: 24px;
    padding-bottom: 26px;
  }

  .hero-copy h1 {
    max-width: 680px;
    font-size: clamp(2.85rem, 9vw, 4.85rem);
    line-height: 0.9;
  }

  .hero-copy p {
    max-width: 650px;
    margin: 0;
  }

  .hero-stage {
    min-height: 330px;
  }

  .code-window {
    min-height: 285px;
  }

  .launch-card {
    width: min(68%, 310px);
  }

}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    margin-right: 0;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .dropdown-menu,
  .foundations-nav .dropdown-menu,
  .code-nav .dropdown-menu {
    width: min(340px, calc(100vw - 32px));
  }

  .hero-section {
    min-height: auto;
  }

  .hero-stage {
    min-height: 390px;
  }

  .pathway-grid,
  .pathway-map-grid,
  .lesson-link-grid,
  .sequence-list,
  .project-grid,
  .scaffold-grid {
    grid-template-columns: 1fr;
  }

  .space-rescue-scene {
    min-height: 430px;
  }

  .rocket-path {
    left: 14%;
    right: 14%;
    top: 43%;
  }

  .rescue-rocket {
    left: 28%;
    top: 25%;
  }

  .planet-home {
    left: 7%;
    bottom: 27%;
  }

  .planet-rescue {
    right: 7%;
    top: 11%;
  }

  .astronaut-card {
    right: 8%;
    bottom: 23%;
  }

  .start-section {
    align-items: stretch;
    flex-direction: column;
  }

  .story-challenge-intro {
    grid-template-columns: 1fr;
  }

  .syntax-card-grid,
  .syntax-role-strip,
  .syntax-sandwich-preview {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1101px) {
  .lesson-workshop.storyboard-workshop {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.8fr);
  }
}

@media (min-width: 721px) {
  .pathway-metaphor-card {
    grid-template-columns: minmax(0, 1fr) minmax(180px, 0.3fr);
  }
}

/* === Step-by-step instruction guide (reusable) === */
.step-guide {
  margin-top: 34px;
  border: 4px solid var(--ink);
  border-radius: 20px;
  background: var(--white);
  box-shadow: var(--small-shadow);
  padding: clamp(18px, 3vw, 30px);
}

.step-guide h2 {
  margin: 0 0 14px;
  font-family: "Fredoka", sans-serif;
  font-size: clamp(1.3rem, 2.6vw, 1.7rem);
}

.step-guide-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.step-guide-list li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  border: 3px solid var(--ink);
  border-radius: 14px;
  background: #eff6ff;
  padding: 12px 14px;
}

.step-guide-list li:nth-child(2n) {
  background: #f0fdf4;
}

.step-number {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
  box-shadow: 2px 3px 0 var(--ink);
  font-family: "Fredoka", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.step-guide-list h3 {
  margin: 2px 0 6px;
  font-family: "Fredoka", sans-serif;
  font-size: 1.05rem;
}

.step-guide-list p {
  margin: 0;
  line-height: 1.5;
}

.reflect-guide .step-number {
  background: var(--coral);
  color: var(--white);
}

/* === Drag-and-drop program builder (reusable) === */
.drag-drop-workshop {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 34px;
}

.drag-drop-workshop .launch-card-wide {
  grid-column: 1 / -1;
}

.drag-bank {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
  min-height: 120px;
}

.drag-block {
  display: grid;
  gap: 8px;
  justify-items: center;
  width: 100%;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #dbeafe;
  box-shadow: 3px 4px 0 var(--ink);
  padding: 10px;
  cursor: grab;
  font-weight: 900;
  text-align: center;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.drag-block:hover {
  transform: translateY(-3px);
  box-shadow: 4px 6px 0 var(--ink);
}

.drag-block img {
  width: min(100%, 150px);
  aspect-ratio: 1;
  object-fit: cover;
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: #17213a;
  pointer-events: none;
}

.drag-block span {
  pointer-events: none;
  line-height: 1.15;
}

.drag-block.is-dragging {
  opacity: 0.4;
  cursor: grabbing;
}

.drag-block.in-slot {
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  text-align: left;
  background: var(--mint);
  padding: 8px 10px;
}

.drag-block.in-slot img {
  width: 56px;
}

.program-tray {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: slot;
}

.drop-slot {
  position: relative;
  display: grid;
  align-items: center;
  min-height: 78px;
  border: 3px dashed rgba(20, 33, 61, 0.5);
  border-radius: 14px;
  background: rgba(125, 211, 252, 0.18);
  padding: 8px 8px 8px 52px;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.drop-slot::before {
  counter-increment: slot;
  content: counter(slot);
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 3px solid var(--ink);
  border-radius: 50%;
  background: var(--white);
  font-family: "Fredoka", sans-serif;
  font-weight: 700;
}

.drop-slot .slot-hint {
  font-weight: 800;
  color: rgba(20, 33, 61, 0.55);
}

.drop-slot.is-over {
  border-color: var(--blue);
  background: rgba(190, 242, 100, 0.45);
}

.drop-slot.is-filled {
  border-style: solid;
  border-color: var(--ink);
  background: var(--white);
}

.drop-slot.is-running {
  animation: slotPulse 0.5s ease;
  background: var(--yellow);
}

.drop-slot.is-wrong {
  border-color: var(--coral);
  background: #ffe4e6;
  animation: trayShake 0.45s ease;
}

@keyframes slotPulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

@keyframes trayShake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-7px); }
  50% { transform: translateX(7px); }
  75% { transform: translateX(-4px); }
}

/* === Mission Control launch scene === */
.launch-scene {
  position: relative;
  overflow: hidden;
  margin-top: 14px;
  height: clamp(260px, 38vw, 360px);
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: linear-gradient(180deg, #0b1026 0%, #1e1b4b 55%, #312e81 100%);
}

.scene-star {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--white);
  box-shadow: 0 0 8px 2px rgba(255, 255, 255, 0.8);
  animation: twinkle 2.2s ease-in-out infinite;
}

.scene-star:nth-child(2n) { animation-delay: 0.7s; }
.scene-star:nth-child(3n) { animation-delay: 1.3s; }

@keyframes twinkle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.25; transform: scale(0.6); }
}

.scene-moon {
  position: absolute;
  top: 10px;
  right: 18px;
  font-size: 2.4rem;
  animation: moonBob 5s ease-in-out infinite;
}

.scene-zoe {
  position: absolute;
  top: 26px;
  right: 34px;
  font-size: 1.6rem;
  animation: moonBob 5s ease-in-out infinite reverse;
}

@keyframes moonBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

.scene-ground {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 52px;
  background: linear-gradient(180deg, #4b5563 0%, #374151 40%, #1f2937 100%);
  border-top: 4px solid var(--ink);
  border-radius: 100% 100% 0 0 / 36px 36px 0 0;
}

.scene-pad-base {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: min(40%, 190px);
  height: 14px;
  background: #6b7280;
  border: 3px solid var(--ink);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
}

.scene-rocket {
  position: absolute;
  bottom: 62px;
  left: 50%;
  transform: translateX(-50%);
  width: min(30%, 150px);
  z-index: 2;
  transition: transform 0.3s ease;
}

.launch-scene.is-launching .scene-rocket {
  animation: rocketRumble 0.9s ease-in-out;
}

.launch-scene.is-launched .scene-rocket {
  animation: rocketLaunch 2.4s ease-in forwards;
}

.launch-scene.is-launched::after {
  content: "🎉 Zoe is safe! 🎉";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  font-family: "Fredoka", sans-serif;
  font-size: clamp(1.3rem, 3vw, 2rem);
  color: var(--white);
  text-shadow: 2px 3px 0 var(--ink);
  animation: fadeInUp 0.8s ease 1.8s both;
}

.launch-scene .scene-flame {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 2.5rem;
  opacity: 0;
  z-index: 1;
}

.launch-scene.is-launching .scene-flame,
.launch-scene.is-launched .scene-flame {
  opacity: 1;
  animation: flameFlicker 0.18s linear infinite;
}

.launch-scene.is-launched .scene-flame {
  animation: flameRise 2.4s ease-in forwards;
}

@keyframes rocketRumble {
  0%, 100% { transform: translateX(-50%); }
  20% { transform: translateX(calc(-50% - 4px)); }
  40% { transform: translateX(calc(-50% + 4px)); }
  60% { transform: translateX(calc(-50% - 3px)); }
  80% { transform: translateX(calc(-50% + 3px)); }
}

@keyframes rocketLaunch {
  0% { transform: translateX(-50%) translateY(0); }
  15% { transform: translateX(calc(-50% + 3px)) translateY(-6px); }
  100% { transform: translateX(-50%) translateY(-420px) scale(0.7); }
}

@keyframes flameFlicker {
  0% { transform: translateX(-50%) scale(1); }
  50% { transform: translateX(-50%) scale(1.25); }
  100% { transform: translateX(-50%) scale(1); }
}

@keyframes flameRise {
  0% { transform: translateX(-50%) translateY(0) scale(1.2); opacity: 1; }
  100% { transform: translateX(-50%) translateY(-420px) scale(0.6); opacity: 0; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 720px) {
  .drag-drop-workshop {
    grid-template-columns: minmax(0, 1fr);
  }

  .drag-bank {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .step-guide-list li {
    grid-template-columns: 38px minmax(0, 1fr);
  }

  .step-number {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
}

/* === Mini Program Builder animated stage === */
.builder-stage {
  position: relative;
  overflow: hidden;
  height: clamp(170px, 22vw, 220px);
  margin-bottom: 16px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: linear-gradient(180deg, #bae6fd 0%, #e0f2fe 70%);
}

.stage-floor {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 32px;
  border-top: 4px solid var(--ink);
  background: repeating-linear-gradient(90deg, #86efac 0 42px, #6ee7b7 42px 84px);
}

.stage-robot {
  position: absolute;
  bottom: 28px;
  left: 6%;
  height: clamp(86px, 12vw, 116px);
  z-index: 2;
  transition: left 0.5s ease;
}

.stage-robot.is-hopping {
  animation: robotHop 0.5s ease;
}

@keyframes robotHop {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-26px); }
}

.stage-star {
  position: absolute;
  bottom: 42px;
  right: 6%;
  height: clamp(48px, 7vw, 66px);
  animation: twinkle 2s ease-in-out infinite;
}

.stage-caption {
  position: absolute;
  z-index: 3;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  max-width: 92%;
  padding: 6px 14px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--white);
  box-shadow: 3px 3px 0 var(--ink);
  font-family: "Fredoka", sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.builder-stage.is-celebrating .stage-star {
  animation: starParty 0.6s ease infinite;
}

@keyframes starParty {
  0%, 100% { transform: scale(1) rotate(-8deg); }
  50% { transform: scale(1.35) rotate(8deg); }
}

.builder-stage.is-celebrating::after {
  content: "🎉";
  position: absolute;
  top: 42%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 2.6rem;
  animation: fadeInUp 0.5s ease both;
}

.capstone-preview li.is-running {
  background: var(--yellow);
  border-radius: 8px;
  transition: background 0.2s ease;
}

/* === Loop builder stage: collectible stars === */
.stage-loop-star {
  position: absolute;
  bottom: 44px;
  height: 42px;
  z-index: 1;
  animation: twinkle 2s ease-in-out infinite;
}

.stage-loop-star.is-collected {
  animation: starCollect 0.45s ease forwards;
}

@keyframes starCollect {
  0% { transform: scale(1); opacity: 1; }
  60% { transform: scale(1.6); opacity: 1; }
  100% { transform: scale(0.2) translateY(-40px); opacity: 0; }
}

.story-order-list li.is-running {
  background: var(--yellow);
  border-radius: 8px;
  transition: background 0.2s ease;
}

/* Celebration dance for characters without a hands-up pose */
.builder-stage.is-celebrating .stage-robot {
  animation: heroDance 0.7s ease-in-out infinite;
}

@keyframes heroDance {
  0%, 100% { transform: translateY(0) rotate(-5deg); }
  50% { transform: translateY(-16px) rotate(5deg); }
}

/* === Goal targets on the builder stage === */
.stage-goal {
  position: absolute;
  bottom: 42px;
  right: 6%;
  z-index: 1;
  height: 58px;
  display: grid;
  place-items: end center;
  font-size: 2.7rem;
  line-height: 1;
}

.stage-goal img {
  display: block;
  height: inherit;
  width: auto;
}

.stage-goal.goal-star img {
  animation: goalPulse 1.6s ease-in-out infinite;
}

@keyframes goalPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.75; transform: scale(1.1); }
}

.stage-goal.goal-stone {
  bottom: 30px;
  height: 52px;
}

.stage-goal.goal-puppy {
  height: 78px;
  bottom: 30px;
}

.stage-goal.is-collected {
  animation: starCollect 0.5s ease forwards;
}

.stage-goal.is-kicked {
  animation: ballKick 0.8s ease-in forwards;
}

@keyframes ballKick {
  0% { transform: translate(0, 0) rotate(0deg); opacity: 1; }
  100% { transform: translate(190px, -120px) rotate(540deg); opacity: 0; }
}

.stage-robot.is-leaping {
  animation: robotLeap 0.7s ease;
}

@keyframes robotLeap {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-72px); }
}

/* Movement styles for each repeated action */
.stage-robot.is-bounding {
  animation: robotBound 0.55s ease;
}

@keyframes robotBound {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-48px); }
}

.stage-robot.is-scooping {
  animation: robotScoop 0.55s ease;
}

@keyframes robotScoop {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(10px) rotate(10deg); }
}

.stage-robot.is-kicking {
  animation: robotKick 0.55s ease;
}

@keyframes robotKick {
  0%, 100% { transform: rotate(0deg) translateX(0); }
  40% { transform: rotate(-10deg) translateX(-4px); }
  70% { transform: rotate(14deg) translateX(8px); }
}

/* Picked-up object: held proudly above the character during celebration */
.stage-goal.is-held {
  bottom: 128px;
  height: 46px;
  z-index: 3;
  opacity: 1;
  animation: heldPop 0.45s ease both, heroDance 0.7s ease-in-out 0.45s infinite;
}

@keyframes heldPop {
  0% { transform: scale(0); opacity: 0; }
  70% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* "Move forward" = smooth slide with a slight lean, not a jump */
.stage-robot.is-sliding {
  animation: robotSlide 0.5s ease;
}

@keyframes robotSlide {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(5deg) translateY(-2px); }
}

/* === First JavaScript Command: talking robot === */
.say-stage {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: end;
  gap: 12px;
  min-height: 150px;
  margin: 16px 0;
  padding: 14px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: linear-gradient(180deg, #e0f2fe 0%, #f0f9ff 100%);
}

.say-robot {
  order: -1;
  height: 110px;
  width: auto;
  align-self: end;
}

.say-robot.is-talking {
  animation: sayTalk 0.5s ease-in-out infinite;
}

.say-robot.is-confused {
  animation: sayConfused 1s ease-in-out infinite;
}

@keyframes sayTalk {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-4deg) translateY(-4px); }
}

@keyframes sayConfused {
  0%, 100% { transform: rotate(-6deg); }
  50% { transform: rotate(6deg); }
}

.say-bubble {
  position: relative;
  align-self: start;
  max-width: 100%;
  min-height: 2.4em;
  padding: 12px 18px;
  border: 4px solid var(--ink);
  border-radius: 18px;
  background: var(--white);
  box-shadow: 4px 4px 0 var(--ink);
  font-family: "Fredoka", sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  animation: bubblePop 0.3s ease both;
}

.say-bubble::after {
  content: "";
  position: absolute;
  left: -16px;
  bottom: 14px;
  border: 10px solid transparent;
  border-right-color: var(--ink);
}

@keyframes bubblePop {
  0% { transform: scale(0.6); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.say-bubble .say-cursor {
  display: inline-block;
  width: 0.5em;
  animation: cursorBlink 0.8s steps(1) infinite;
}

@keyframes cursorBlink {
  50% { opacity: 0; }
}

.code-echo-panel pre {
  margin: 10px 0 0;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 1rem;
  line-height: 1.5;
}

/* Console output list is read by the talking robot but not shown */
.code-output-list[hidden] {
  display: none;
}

/* Example code panel above the editor */
.code-example-panel {
  margin-bottom: 14px;
}

.code-example-panel .secondary-button {
  margin-top: 12px;
}

.variable-puzzle-builder {
  display: grid;
  gap: 14px;
  margin: 14px 0 18px;
  padding: 14px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #eef7ff;
}

.variable-puzzle-group {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 3px solid rgba(20, 33, 61, 0.22);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
}

.variable-assignment {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0;
  min-height: 70px;
  padding: 6px 4px;
}

.variable-choice-label {
  font-size: 0.82rem;
  font-weight: 900;
}

.variable-puzzle-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 0;
}

.variable-puzzle-piece {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 58px;
  margin-right: -5px;
  border: 0;
  background: url("assets/images/puzzle_piece.png") center / 100% 100% no-repeat;
  color: #fff;
  filter: saturate(0.72);
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.variable-puzzle-piece.puzzle-fixed,
.variable-puzzle-piece.puzzle-slot {
  cursor: default;
}

.variable-puzzle-piece.puzzle-name {
  filter: hue-rotate(185deg) saturate(1.45) brightness(1.2);
}

.variable-puzzle-piece.puzzle-equals {
  width: 92px;
  filter: hue-rotate(120deg) saturate(1.8) brightness(1.05);
}

.variable-puzzle-piece.puzzle-slot {
  filter: hue-rotate(55deg) saturate(1.15) brightness(1.15);
  animation: puzzlePlug 0.28s ease both;
}

.variable-puzzle-piece.puzzle-choice {
  filter: hue-rotate(12deg) saturate(0.85) brightness(1.12);
}

.variable-puzzle-piece.piece-short { width: 150px; }
.variable-puzzle-piece.piece-medium { width: 185px; }
.variable-puzzle-piece.piece-long { width: 235px; }

.variable-puzzle-piece code {
  max-width: calc(100% - 38px);
  color: inherit;
  font: 900 0.78rem/1.1 ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  white-space: nowrap;
}

.variable-puzzle-piece.puzzle-choice:hover,
.variable-puzzle-piece.puzzle-choice:focus-visible {
  z-index: 2;
  filter: saturate(1);
  transform: translateY(-3px);
  outline: none;
}

.variable-puzzle-piece.is-selected {
  z-index: 1;
  filter: hue-rotate(70deg) saturate(1.25) brightness(1.1);
  transform: translateY(-2px);
}

.variable-puzzle-piece.is-selected::after {
  content: "Selected";
  position: absolute;
  right: 18px;
  top: -9px;
  padding: 2px 7px;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  color: var(--ink);
  font: 900 0.62rem/1.2 "Nunito", sans-serif;
}

.variable-puzzle-note {
  margin: 0;
  font-size: 0.88rem;
}

.basketball-variable-builder {
  display: grid;
  gap: 12px;
  margin: 14px 0 18px;
  padding: 14px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: #eef7ff;
}

.basketball-variable-builder > p { margin: 0; }

.basketball-variable-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.basketball-variable-grid label {
  display: grid;
  gap: 4px;
  font-size: 0.8rem;
  font-weight: 900;
}

.basketball-variable-grid input,
.basketball-variable-grid select {
  width: 100%;
  min-height: 42px;
  border: 3px solid var(--ink);
  border-radius: 10px;
  background: #fff;
  padding: 7px 9px;
  color: var(--ink);
  font: 900 0.9rem "Nunito", sans-serif;
}

.basketball-update-rule {
  padding: 12px 14px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: #101827;
  color: #bbf7d0;
  text-align: center;
  font-size: 0.95rem;
  font-weight: 900;
}

.basketball-update-rule code { color: inherit; }

.basketball-challenge-mission {
  display: grid;
  gap: 8px;
  margin: 14px 0;
  padding: 14px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: var(--yellow);
}

.basketball-challenge-mission p { margin: 0; }

/* Alien Chemistry if/then lessons */
.alien-chem-explainer {
  margin-bottom: 18px;
  background: linear-gradient(135deg, #e8f7ff, #f0e6ff);
}

.alien-chem-explainer pre,
.alien-code-card pre {
  margin: 12px 0 0;
  overflow-x: auto;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  padding: 14px;
  font: 800 0.88rem/1.5 ui-monospace, monospace;
}

.alien-chem-workshop { align-items: start; }

.alien-chemical-pickers {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 10px;
  align-items: end;
  margin: 14px 0;
}

.alien-chemical-pickers label {
  display: grid;
  gap: 6px;
  font-weight: 900;
}

.alien-chemical-pickers select {
  width: 100%;
  min-height: 48px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: #fff;
  padding: 8px;
  color: var(--ink);
  font-weight: 900;
}

.alien-plus {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 2px;
  border: 4px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
  font-size: 1.5rem;
  font-weight: 1000;
}

.alien-code-card { margin: 12px 0; }
.alien-code-card pre { min-height: 180px; font-size: 0.78rem; }

.alien-generated-code {
  margin: 12px 0;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
}

.alien-generated-code summary {
  padding: 12px 14px;
  color: #bbf7d0;
  cursor: pointer;
  font-weight: 1000;
}

.alien-generated-code .alien-code-card { margin: 0; }
.alien-generated-code .alien-code-card pre {
  max-height: 320px;
  margin: 0;
  overflow: auto;
  border: 0;
  border-top: 3px solid rgba(187, 247, 208, .3);
  border-radius: 0 0 10px 10px;
}

.alien-code-helper {
  margin: 0 0 10px;
  font-weight: 800;
}
.alien-focus-code {
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #101827;
  color: #bbf7d0;
  overflow: hidden;
}
.alien-focus-code::before {
  content: "CURRENT RECIPE";
  display: block;
  padding: 8px 13px;
  background: #24324a;
  color: #ffe36e;
  font-size: .78rem;
  font-weight: 1000;
  letter-spacing: .06em;
}
.alien-focus-code pre {
  min-height: 0;
  margin: 0;
  padding: 16px;
  overflow: auto;
  font-size: clamp(.82rem, 1.5vw, 1rem);
  line-height: 1.55;
  white-space: pre-wrap;
}

.alien-lab-stage {
  --reaction-color: #48e5c2;
  --chemical-1-color: #48e5c2;
  --chemical-2-color: #c285ff;
  position: relative;
  display: grid;
  place-items: end center;
  min-height: 430px;
  overflow: hidden;
  margin: 14px 0;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: linear-gradient(rgba(8, 15, 29, .12), rgba(8, 15, 29, .28)), url("./assets/images/alien/alien_lab.png") center / cover no-repeat;
}

.alien-lab-stage::before,
.alien-lab-stage::after {
  content: "";
  position: absolute;
  top: 36px;
  width: 76px;
  height: 150px;
  border: 0;
  background: url("./assets/images/alien/testtube.png") center / contain no-repeat;
  filter: drop-shadow(0 0 12px var(--reaction-color));
}

.alien-lab-stage::before { left: 12%; transform: rotate(-10deg); filter: drop-shadow(0 0 12px var(--chemical-1-color)); }
.alien-lab-stage::after { right: 12%; transform: rotate(10deg); filter: drop-shadow(0 0 12px var(--chemical-2-color)); }

.alien-tube-liquid {
  position: absolute;
  z-index: 1;
  top: 91px;
  width: 34px;
  height: 78px;
  border-radius: 5px 5px 16px 16px;
  opacity: .82;
  box-shadow: inset 5px 0 0 rgba(255,255,255,.25), 0 0 16px currentColor;
  transform-origin: center top;
}
.alien-tube-liquid-left {
  left: calc(12% + 21px);
  color: var(--chemical-1-color);
  background: var(--chemical-1-color);
  transform: rotate(-10deg);
}
.alien-tube-liquid-right {
  right: calc(12% + 21px);
  color: var(--chemical-2-color);
  background: var(--chemical-2-color);
  transform: rotate(10deg);
}

.alien-pour-stream {
  position: absolute;
  z-index: 2;
  top: 112px;
  width: 13px;
  height: 0;
  border-radius: 999px;
  background: var(--reaction-color);
  box-shadow: 0 0 18px var(--reaction-color);
  opacity: 0;
  transform-origin: top;
}
.alien-pour-stream-left { left: 43%; transform: rotate(-7deg); background: var(--chemical-1-color); box-shadow: 0 0 18px var(--chemical-1-color); }
.alien-pour-stream-right { right: 43%; transform: rotate(7deg); background: var(--chemical-2-color); box-shadow: 0 0 18px var(--chemical-2-color); }
.alien-lab-stage.is-pouring::before { animation: alienTubePourLeft 1.35s ease-in-out both; }
.alien-lab-stage.is-pouring::after { animation: alienTubePourRight 1.35s ease-in-out both; }
.alien-lab-stage.is-pouring .alien-tube-liquid-left { animation: alienTubeLiquidPourLeft 1.35s ease-in-out both; }
.alien-lab-stage.is-pouring .alien-tube-liquid-right { animation: alienTubeLiquidPourRight 1.35s ease-in-out both; }
.alien-lab-stage.is-pouring .alien-pour-stream { animation: alienPourStream 1.35s ease-in-out both; }
.alien-lab-stage.is-pouring .alien-liquid { animation: alienVatFill 1.35s ease-in-out both; }

.alien-vat {
  position: relative;
  z-index: 3;
  width: min(62%, 330px);
  height: 235px;
  margin-bottom: 42px;
  border: 0;
  background: url("./assets/images/alien/vat.png") center / contain no-repeat;
  box-shadow: none;
}

.alien-liquid {
  position: absolute;
  inset: 64px 70px 70px;
  overflow: hidden;
  border-radius: 30% 30% 42% 42%;
  background: var(--reaction-color);
  box-shadow: inset 0 10px 0 rgba(255,255,255,.18), 0 0 22px var(--reaction-color);
  opacity: .32;
  mix-blend-mode: screen;
}

.alien-reaction-art {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 105px;
  width: min(38%, 180px);
  max-height: 210px;
  object-fit: contain;
  transform: translateX(-50%);
  filter: drop-shadow(0 8px 12px rgba(0,0,0,.45));
  animation: alienArtRise .8s cubic-bezier(.2,1.25,.4,1) both;
}
.alien-lab-stage.has-reaction-art .alien-vat::after { display: none; }
.alien-lab-stage.is-blob .alien-reaction-art { animation: alienArtRise .55s ease-out both, alienImageBounce .65s ease-in-out .55s 5; }
.alien-lab-stage.is-frost .alien-reaction-art { animation: alienArtRise .55s ease-out both, alienImageShiver .16s linear .55s 18; }
.alien-lab-stage.is-floater .alien-reaction-art { animation: alienArtRise .55s ease-out both, alienImageFloat 1.15s ease-in-out .55s infinite; }
.alien-lab-stage.is-cloud .alien-reaction-art { animation: alienArtRise .55s ease-out both, alienImageDrift 1.6s ease-in-out .55s infinite; }
.alien-lab-stage.is-goo .alien-reaction-art { animation: alienArtRise .55s ease-out both, alienImageWobble .8s ease-in-out .55s infinite; }
.alien-lab-stage.is-custom .alien-reaction-art { animation: alienArtRise .55s ease-out both, alienImageDance .55s ease-in-out .55s 6; }
.alien-lab-stage.is-acid .alien-reaction-art,
.alien-lab-stage.is-nova .alien-reaction-art { width: min(62%, 290px); animation: alienImageBoom .65s ease-out both; }

.alien-vat i {
  position: absolute;
  z-index: 4;
  bottom: 100px;
  width: 22px;
  height: 22px;
  border: 4px solid var(--ink);
  border-radius: 50%;
  background: var(--reaction-color);
  opacity: 0;
}
.alien-vat i:nth-child(2) { left: 24%; }
.alien-vat i:nth-child(3) { left: 50%; width: 32px; height: 32px; }
.alien-vat i:nth-child(4) { left: 72%; }

.alien-lab-stage.is-reacting .alien-vat i { animation: alienBubble 1.4s ease-out 3; }
.alien-lab-stage.is-reacting .alien-liquid { animation: alienLiquid 0.55s ease-in-out 7; }
.alien-lab-stage.is-explosion { animation: alienShake 0.12s linear 18; --reaction-color: #ff4b35; }
.alien-lab-stage.is-alien { --reaction-color: #9cff57; }
.alien-lab-stage.is-blob { --reaction-color: #ff72dc; }
.alien-lab-stage.is-goo { --reaction-color: #9b7bff; }
.alien-lab-stage.is-frost { --reaction-color: #8be9ff; }
.alien-lab-stage.is-floater { --reaction-color: #ffd84d; }
.alien-lab-stage.is-cloud { --reaction-color: #ff9fe5; }
.alien-lab-stage.is-nova { --reaction-color: #ffbd35; }
.alien-lab-stage.is-acid { --reaction-color: #8cff45; }
.alien-lab-stage.is-custom { --reaction-color: #ffe36e; }
.alien-lab-stage.is-antidote { --reaction-color: #65e7ff; }

.alien-result {
  position: absolute;
  z-index: 5;
  left: 50%;
  bottom: 14px;
  width: max-content;
  max-width: 90%;
  transform: translateX(-50%);
  padding: 8px 14px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  font-weight: 1000;
  text-align: center;
}

.alien-lab-stage.is-alien .alien-vat::after {
  content: "👽";
  position: absolute;
  left: 50%;
  bottom: 100px;
  transform: translateX(-50%);
  font-size: 5rem;
  animation: alienRise 1.4s ease both;
}

.alien-lab-stage.is-blob .alien-vat::after {
  content: "BLOB";
  position: absolute;
  left: 50%;
  bottom: 90px;
  transform: translateX(-50%);
  padding: 20px 24px;
  border: 5px solid var(--ink);
  border-radius: 48% 52% 42% 58%;
  background: #ff72dc;
  font-weight: 1000;
  animation: alienBlobBounce 0.65s ease-in-out 4;
}

.alien-lab-stage.is-goo .alien-vat::after {
  content: "GOO";
  position: absolute;
  left: 50%;
  bottom: 88px;
  transform: translateX(-50%);
  padding: 18px 28px 10px;
  border: 5px solid var(--ink);
  border-radius: 55% 45% 25% 30%;
  background: #9b7bff;
  box-shadow: inset 8px 8px 0 rgba(255,255,255,.28);
  font-weight: 1000;
  animation: alienGooWobble 1.2s ease-in-out 3;
}

.alien-lab-stage.is-frost .alien-vat::after {
  content: "👽";
  position: absolute;
  left: 50%;
  bottom: 98px;
  transform: translateX(-50%);
  padding: 4px 12px 10px;
  border: 5px solid var(--ink);
  border-radius: 48% 48% 40% 40%;
  background: #dffaff;
  box-shadow: 0 0 25px #8be9ff;
  font-size: 4rem;
  animation: alienRise 1.4s ease both;
}

.alien-lab-stage.is-floater .alien-vat::after {
  content: "🛸";
  position: absolute;
  left: 50%;
  bottom: 110px;
  transform: translateX(-50%);
  font-size: 5rem;
  filter: drop-shadow(0 0 14px #ffd84d);
  animation: alienFloat 1.2s ease-in-out 3;
}

.alien-lab-stage.is-cloud .alien-vat::after {
  content: "SQUID";
  position: absolute;
  left: 50%;
  bottom: 96px;
  transform: translateX(-50%);
  padding: 22px 18px 14px;
  border: 5px solid var(--ink);
  border-radius: 50% 50% 35% 35%;
  background: #ff9fe5;
  box-shadow: -18px 18px 0 -10px #ff9fe5, 18px 18px 0 -10px #ff9fe5;
  font-weight: 1000;
  animation: alienFloat 1.4s ease-in-out 3;
}

.alien-lab-stage.is-custom .alien-vat::after {
  content: "NEW!";
  position: absolute;
  left: 50%;
  bottom: 95px;
  transform: translateX(-50%);
  padding: 22px;
  border: 5px solid var(--ink);
  border-radius: 42% 58% 50% 44%;
  background: linear-gradient(135deg, #ffe36e, #ff8ed8, #75e8ff);
  box-shadow: 0 0 30px #ffe36e;
  font-weight: 1000;
  animation: alienCustomCreature 1s ease-in-out 3;
}

.alien-lab-stage.is-nova::after,
.alien-lab-stage.is-acid::after {
  content: "NOVA BURST!";
  display: grid;
  place-items: center;
  position: absolute;
  z-index: 8;
  inset: 13% 7% 20%;
  width: auto;
  height: auto;
  border: 7px solid var(--ink);
  border-radius: 50%;
  background: repeating-conic-gradient(#fff 0 8deg, #ffd84d 9deg 18deg, #ff6b35 19deg 27deg);
  color: var(--ink);
  font: 1000 clamp(1.8rem, 7vw, 3.6rem)/1 "Fredoka", sans-serif;
  text-align: center;
  transform: none;
  filter: none;
  animation: alienBoom .65s ease both;
}

.alien-lab-stage.is-acid::after {
  content: "ACID BOOM!";
  background: repeating-conic-gradient(#efffcf 0 8deg, #8cff45 9deg 18deg, #5323a8 19deg 27deg);
}

.alien-lab-stage.has-reaction-art.is-nova::after,
.alien-lab-stage.has-reaction-art.is-acid::after { display: none; }

.alien-lab-stage.is-explosion::after {
  content: "BOOM!";
  display: grid;
  place-items: center;
  position: absolute;
  z-index: 8;
  inset: 16% 8% 22%;
  width: auto;
  height: auto;
  border: 7px solid var(--ink);
  border-radius: 50%;
  background: radial-gradient(circle, #fff 0 10%, #ffe14c 11% 32%, #ff6b35 33% 60%, #b91c1c 61%);
  color: var(--ink);
  font: 1000 clamp(2rem, 8vw, 4rem)/1 "Fredoka", sans-serif;
  transform: none;
  filter: none;
  animation: alienBoom 0.6s ease both;
}

.alien-lab-stage.alien-danger-stage.is-explosion::after { display: none; }

.alien-recipe-list {
  display: grid;
  gap: 8px;
  padding: 12px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fff8c9;
}
.alien-recipe-list p { margin: 0; }
.alien-builder-layout {
  display: grid;
  gap: 20px;
}
.alien-builder-controls {
  width: 100%;
}
.alien-intro-controls > p {
  margin-top: 0;
}
.alien-intro-controls .alien-chemical-pickers {
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
}
.alien-intro-code {
  margin-top: 12px;
}
.alien-intro-code .alien-code-card {
  margin: 0;
}
.alien-intro-code .alien-code-card pre {
  max-height: 390px;
  margin: 0;
  overflow: auto;
  border: 0;
  border-radius: 10px;
}
.alien-builder-controls .alien-recipe-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.alien-builder-controls .alien-recipe-list > strong {
  grid-column: 1 / -1;
}
.alien-builder-controls .alien-custom-recipe {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
}
.alien-builder-controls .alien-custom-recipe > strong,
.alien-builder-controls .alien-custom-recipe > p,
.alien-builder-controls .alien-custom-grid,
.alien-builder-controls .alien-custom-status {
  grid-column: 1 / -1;
}
.alien-builder-controls .alien-custom-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}
.alien-builder-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, .9fr);
  gap: 20px;
  align-items: start;
}
.alien-builder-code-panel,
.alien-builder-reaction-panel {
  min-width: 0;
}
.alien-builder-code-panel .alien-generated-code[open] .alien-code-card {
  max-height: 390px;
}
.alien-builder-reaction-panel .alien-lab-stage {
  min-height: 390px;
}
.alien-custom-recipe {
  display: grid;
  gap: 10px;
  margin-top: 12px;
  padding: 14px;
  border: 4px dashed var(--ink);
  border-radius: 14px;
  background: linear-gradient(135deg, #e9dcff, #dffcf5);
}
.alien-custom-recipe p { margin: 0; }
.alien-custom-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.alien-custom-grid label { display: grid; gap: 4px; font-size: .78rem; font-weight: 900; }
.alien-custom-grid input,
.alien-custom-grid select { min-height: 42px; width: 100%; border: 3px solid var(--ink); border-radius: 10px; background: #fff; padding: 7px 9px; color: var(--ink); font-weight: 900; }
.alien-custom-status { font-size: .82rem; font-weight: 800; }
.alien-planet-picker {
  display: grid;
  gap: 6px;
  margin: 10px 0;
  font-weight: 900;
}
.alien-planet-picker select {
  min-height: 48px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: linear-gradient(90deg, #e8dcff, #dff8ff);
  padding: 8px 10px;
  color: var(--ink);
  font-weight: 900;
}
.alien-planet-badge {
  position: absolute;
  z-index: 6;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  justify-items: center;
  gap: 0;
  font-weight: 1000;
}
.alien-planet-badge img {
  display: block;
  width: 92px;
  height: 92px;
  object-fit: contain;
  filter: drop-shadow(0 5px 10px rgba(0,0,0,.55));
}
.alien-planet-badge span {
  margin-top: -9px;
  padding: 3px 10px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: #c4b5fd;
  line-height: 1.1;
}

.alien-lab-stage.is-planet-dropping .alien-planet-badge {
  animation: alienPlanetDrop 1.15s cubic-bezier(.35,.05,.65,1) forwards;
}

.alien-lab-stage.planet-mars { box-shadow: inset 0 0 110px rgba(255, 75, 53, .42); }
.alien-lab-stage.planet-europa { box-shadow: inset 0 0 110px rgba(101, 231, 255, .42); }
.alien-lab-stage.planet-saturn { box-shadow: inset 0 0 110px rgba(255, 216, 77, .4); }
.alien-lab-stage.planet-venus { box-shadow: inset 0 0 110px rgba(255, 114, 220, .4); }
.alien-lab-stage.planet-neptune { box-shadow: inset 0 0 110px rgba(41, 121, 255, .48); }
.alien-lab-stage.planet-zorp { box-shadow: inset 0 0 110px rgba(140, 255, 69, .4); }
.alien-mission { background: #ffd84d; }
.alien-cheat-sheet {
  margin: 12px 0;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #eefcff;
  overflow: hidden;
}
.alien-cheat-sheet summary {
  padding: 11px 14px;
  background: linear-gradient(90deg, #9cf0c1, #8be9ff);
  cursor: pointer;
  font-weight: 1000;
}
.alien-cheat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 12px;
}
.alien-cheat-grid section {
  display: grid;
  align-content: start;
  gap: 7px;
  padding: 10px;
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: #fff;
}
.alien-cheat-grid code {
  width: fit-content;
  max-width: 100%;
  padding: 4px 7px;
  border-radius: 7px;
  background: #101827;
  color: #bbf7d0;
  font-weight: 900;
  overflow-wrap: anywhere;
}
.alien-cheat-grid p { margin: 0; font-size: .82rem; }
.alien-danger-stage .alien-warning { position: absolute; top: 14px; z-index: 6; padding: 6px 12px; border: 4px solid var(--ink); border-radius: 10px; background: #ff4b35; color: #fff; font-weight: 1000; animation: cursorBlink .7s steps(1) infinite; }
.alien-celebration { position: absolute; z-index: 9; top: 42%; left: 50%; transform: translate(-50%,-50%); width: max-content; max-width: 86%; padding: 16px 24px; border: 6px solid var(--ink); border-radius: 20px; background: var(--yellow); box-shadow: 7px 8px 0 var(--ink); font: 1000 clamp(1.5rem, 6vw, 2.8rem)/1 "Fredoka", sans-serif; animation: basketballWinPop .6s cubic-bezier(.2,1.4,.4,1) both; }
.alien-challenge-explosion,
.alien-challenge-fireworks {
  position: absolute;
  z-index: 8;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
}
.alien-challenge-explosion {
  padding: 28px;
  filter: drop-shadow(0 0 28px #ff4b35);
  animation: alienChallengeBlast .65s cubic-bezier(.15,1.2,.35,1) both;
}
.alien-challenge-fireworks {
  object-fit: cover;
  mix-blend-mode: screen;
  animation: alienFanfareGlow .7s ease both;
}
.alien-danger-stage.is-saved {
  --reaction-color: #65e7ff;
  box-shadow: inset 0 0 80px rgba(101,231,255,.65), 0 0 28px #65e7ff;
}
.alien-danger-stage.is-saved .alien-warning { display: none; }

@keyframes alienBubble { 0% { transform: translateY(0) scale(.4); opacity: 0; } 25% { opacity: 1; } 100% { transform: translateY(-135px) scale(1.1); opacity: 0; } }
@keyframes alienLiquid { 50% { transform: scaleY(1.08) translateY(-5px); filter: brightness(1.35); } }
@keyframes alienShake { 25% { transform: translate(4px,-2px); } 75% { transform: translate(-4px,2px); } }
@keyframes alienRise { from { transform: translate(-50%,70px) scale(.2); opacity: 0; } to { transform: translate(-50%,0) scale(1); opacity: 1; } }
@keyframes alienBlobBounce { 50% { transform: translateX(-50%) translateY(-35px) rotate(5deg); } }
@keyframes alienGooWobble { 50% { transform: translateX(-50%) scaleX(1.2) scaleY(.82) rotate(-4deg); } }
@keyframes alienFloat { 50% { transform: translateX(-50%) translateY(-32px) rotate(4deg); } }
@keyframes alienCustomCreature { 50% { transform: translateX(-50%) translateY(-25px) rotate(-8deg) scale(1.12); } }
@keyframes alienArtRise {
  from { transform: translateX(-50%) translateY(75px) scale(.25); opacity: 0; }
  to { transform: translateX(-50%) translateY(0) scale(1); opacity: 1; }
}
@keyframes alienImageBounce {
  0%, 100% { transform: translateX(-50%) translateY(0) scale(1); }
  48% { transform: translateX(-50%) translateY(-58px) scale(.92, 1.08); }
  72% { transform: translateX(-50%) translateY(5px) scale(1.08, .9); }
}
@keyframes alienImageShiver {
  0%, 100% { transform: translateX(-50%) rotate(0); }
  25% { transform: translateX(calc(-50% - 5px)) rotate(-2deg); }
  75% { transform: translateX(calc(-50% + 5px)) rotate(2deg); }
}
@keyframes alienImageFloat {
  0%, 100% { transform: translateX(-50%) translateY(0) rotate(-2deg); }
  50% { transform: translateX(-50%) translateY(-34px) rotate(3deg); }
}
@keyframes alienImageDrift {
  0%, 100% { transform: translateX(-58%) translateY(0) rotate(-3deg); }
  50% { transform: translateX(-42%) translateY(-18px) rotate(4deg); }
}
@keyframes alienImageWobble {
  0%, 100% { transform: translateX(-50%) scale(1, 1); }
  35% { transform: translateX(-50%) scale(1.12, .86) rotate(-3deg); }
  70% { transform: translateX(-50%) scale(.92, 1.08) rotate(3deg); }
}
@keyframes alienImageDance {
  0%, 100% { transform: translateX(-50%) rotate(0) translateY(0); }
  25% { transform: translateX(-58%) rotate(-8deg) translateY(-15px); }
  75% { transform: translateX(-42%) rotate(8deg) translateY(-15px); }
}
@keyframes alienImageBoom {
  from { transform: translateX(-50%) scale(.08) rotate(-18deg); opacity: 0; }
  to { transform: translateX(-50%) scale(1.15) rotate(0); opacity: 1; }
}
@keyframes alienChallengeBlast {
  from { transform: scale(.08) rotate(-18deg); opacity: 0; }
  70% { transform: scale(1.1) rotate(3deg); opacity: 1; }
  to { transform: scale(1) rotate(0); opacity: 1; }
}
@keyframes alienFanfareGlow {
  from { opacity: 0; filter: brightness(.5); }
  to { opacity: .9; filter: brightness(1.35); }
}
@keyframes alienTubePourLeft {
  0%, 100% { transform: rotate(-10deg); }
  22%, 78% { transform: translate(105px, 18px) rotate(72deg); }
}
@keyframes alienTubePourRight {
  0%, 100% { transform: rotate(10deg); }
  22%, 78% { transform: translate(-105px, 18px) rotate(-72deg); }
}
@keyframes alienTubeLiquidPourLeft {
  0%, 100% { transform: rotate(-10deg); opacity: .82; }
  22%, 72% { transform: translate(105px, 18px) rotate(72deg); opacity: .82; }
  86% { transform: translate(105px, 18px) rotate(72deg) scaleY(.15); opacity: .25; }
}
@keyframes alienTubeLiquidPourRight {
  0%, 100% { transform: rotate(10deg); opacity: .82; }
  22%, 72% { transform: translate(-105px, 18px) rotate(-72deg); opacity: .82; }
  86% { transform: translate(-105px, 18px) rotate(-72deg) scaleY(.15); opacity: .25; }
}
@keyframes alienPourStream {
  0%, 16%, 88%, 100% { height: 0; opacity: 0; }
  28%, 76% { height: 82px; opacity: .95; }
}
@keyframes alienVatFill {
  0% { transform: scaleY(.72); transform-origin: bottom; filter: brightness(.8); }
  65%, 100% { transform: scaleY(1); transform-origin: bottom; filter: brightness(1.25); }
}
@keyframes alienPlanetDrop {
  0% { top: 8px; transform: translateX(-50%) rotate(0) scale(1); opacity: 1; }
  68% { top: 46%; transform: translateX(-50%) rotate(150deg) scale(.62); opacity: 1; }
  100% { top: 56%; transform: translateX(-50%) rotate(230deg) scale(.2); opacity: 0; }
}
@keyframes alienBoom { from { transform: scale(.1) rotate(-25deg); opacity: 0; } to { transform: scale(1) rotate(0); opacity: 1; } }

@media (max-width: 720px) {
  .alien-chemical-pickers { grid-template-columns: minmax(0, 1fr); }
  .alien-plus { margin: 0 auto; }
  .alien-lab-stage { min-height: 360px; }
  .alien-lab-stage::before { left: 5%; }
  .alien-lab-stage::after { right: 5%; }
  .alien-tube-liquid-left { left: calc(5% + 21px); }
  .alien-tube-liquid-right { right: calc(5% + 21px); }
  .alien-pour-stream-left { left: 42%; }
  .alien-pour-stream-right { right: 42%; }
  .alien-custom-grid { grid-template-columns: minmax(0, 1fr); }
  .alien-builder-controls .alien-recipe-list,
  .alien-builder-controls .alien-custom-grid,
  .alien-builder-workbench { grid-template-columns: minmax(0, 1fr); }
  .alien-intro-controls .alien-chemical-pickers { grid-template-columns: minmax(0, 1fr); }
  .alien-builder-controls .alien-custom-recipe { grid-template-columns: minmax(0, 1fr); }
  .alien-cheat-grid { grid-template-columns: minmax(0, 1fr); }
}

.basketball-celebration {
  position: absolute;
  z-index: 6;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  mix-blend-mode: screen;
}

.basketball-win-banner {
  position: absolute;
  z-index: 7;
  top: 48%;
  left: 50%;
  width: max-content;
  max-width: 86%;
  transform: translate(-50%, -50%);
  padding: 12px 20px;
  border: 5px solid var(--ink);
  border-radius: 18px;
  background: var(--yellow);
  box-shadow: 6px 7px 0 var(--ink);
  color: var(--ink);
  font: 1000 clamp(1.4rem, 5vw, 2.4rem)/1 "Fredoka", sans-serif;
  text-align: center;
  animation: basketballWinPop 0.6s cubic-bezier(0.2, 1.4, 0.4, 1) both;
}

@keyframes basketballWinPop {
  0% { transform: translate(-50%, -50%) scale(0) rotate(-8deg); }
  75% { transform: translate(-50%, -50%) scale(1.12) rotate(3deg); }
  100% { transform: translate(-50%, -50%) scale(1) rotate(0); }
}

.basketball-game-stage {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  margin: 16px 0 8px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: url("assets/images/basketball_game/game_screen.png") center / cover no-repeat;
}

.basketball-scoreboard {
  position: absolute;
  z-index: 3;
  top: 16px;
  left: 38%;
  width: min(58%, 285px);
  aspect-ratio: 1.08;
  transform: translateX(-50%);
  color: #ff3b30;
  font: 900 clamp(0.65rem, 2vw, 1.2rem)/1 ui-monospace, monospace;
  text-shadow: 0 0 5px currentColor;
}

.basketball-scoreboard img { position: absolute; inset: 0; width: 100%; height: 100%; }
.basketball-scoreboard span { position: absolute; z-index: 2; transform: translate(-50%, -50%); }
.basketball-clock { left: 53%; top: 20%; font-size: 1.25em; }
.basketball-home-name { left: 24%; top: 39%; max-width: 30%; color: #ffb000; font-size: 0.67em; }
.basketball-visitor-name { left: 78%; top: 39%; max-width: 30%; color: #ffb000; font-size: 0.67em; }
.basketball-home-score { left: 24%; top: 57%; font-size: 1.35em; }
.basketball-visitor-score { left: 78%; top: 57%; font-size: 1.35em; }
.basketball-period { left: 52%; top: 53%; color: #9cff44; }
.basketball-home-fouls { left: 34%; top: 83%; }
.basketball-visitor-fouls { left: 68%; top: 83%; }
.basketball-possession { top: 24%; color: #ff3b30; font-size: 1.25em; }
.basketball-possession-home { left: 15%; }
.basketball-possession-visiting { left: 88%; transform: translate(-50%, -50%) rotate(180deg) !important; }

.basketball-hoop {
  position: absolute;
  z-index: 2;
  right: -2%;
  bottom: -2%;
  width: 34%;
  max-height: 57%;
  object-fit: contain;
}

.basketball-ball {
  position: absolute;
  z-index: 4;
  left: 10%;
  bottom: 12%;
  width: 64px;
  filter: drop-shadow(4px 6px 3px rgba(0, 0, 0, 0.45));
}

.basketball-game-stage.is-shooting .basketball-ball { animation: basketballShot 4s ease-in-out forwards; }

.basketball-call {
  position: absolute;
  z-index: 5;
  left: 14px;
  bottom: 14px;
  max-width: 58%;
  padding: 7px 11px;
  border: 3px solid var(--ink);
  border-radius: 10px;
  background: var(--yellow);
}

@keyframes basketballShot {
  0% { left: 10%; bottom: 12%; transform: rotate(0) scale(1); }
  48% { left: 67%; bottom: 61%; transform: rotate(540deg) scale(0.72); }
  72% { left: 78%; bottom: 39%; transform: rotate(760deg) scale(0.55); opacity: 1; }
  100% { left: 79%; bottom: 26%; transform: rotate(900deg) scale(0.48); opacity: 0; }
}

@media (max-width: 720px) {
  .basketball-variable-grid { grid-template-columns: minmax(0, 1fr); }
  .basketball-game-stage { min-height: 360px; }
  .basketball-scoreboard { left: 36%; width: 62%; }
  .basketball-hoop { right: -5%; width: 38%; }
}

@keyframes puzzlePlug {
  0% { transform: translateX(22px); opacity: 0.35; }
  100% { transform: translateX(0); opacity: 1; }
}

.variable-action-stage {
  overflow: hidden;
  min-height: 230px;
  background: linear-gradient(180deg, #111b4e 0%, #324fa3 68%, #7389d0 100%);
}

.variable-action-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, #fff 1px, transparent 1.5px);
  background-size: 34px 34px;
  opacity: 0.5;
}

.variable-action-stage .say-bubble {
  z-index: 4;
}

.variable-hero {
  position: relative;
  z-index: 3;
  height: 145px;
  transform-origin: 50% 100%;
}

.variable-hero-name {
  position: absolute;
  z-index: 4;
  left: 14px;
  bottom: 8px;
  padding: 3px 10px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  font-weight: 900;
}

.variable-moon {
  position: absolute;
  z-index: 2;
  right: 24px;
  bottom: 28px;
  display: grid;
  place-items: center;
  width: 82px;
  height: 82px;
  border: 4px solid var(--ink);
  border-radius: 50%;
  background: #fff4ad;
  box-shadow: inset -12px -8px 0 #e7d27b, 0 0 24px rgba(255, 244, 173, 0.7);
  color: var(--ink);
  font-weight: 900;
}

.variable-action-stage.is-moon-jump .variable-hero { animation: variableMoonJump 4s ease-in-out; }
.variable-action-stage.is-dance .variable-hero { animation: variableDance 0.75s ease-in-out 6; }
.variable-action-stage.is-fly .variable-hero { animation: variableFly 4.5s ease-in-out; }

.replay-variable-animation {
  width: 100%;
  margin: -4px 0 14px;
}

@keyframes variableMoonJump {
  0%, 100% { transform: translate(0, 0) rotate(0); }
  48% { transform: translate(150px, -105px) rotate(8deg); }
  68% { transform: translate(205px, -52px) rotate(-5deg); }
}

@keyframes variableDance {
  0%, 100% { transform: rotate(-10deg) translateY(0); }
  50% { transform: rotate(10deg) translateY(-12px) scale(1.05); }
}

@keyframes variableFly {
  0% { transform: translate(0, 0) rotate(0); }
  45% { transform: translate(150px, -85px) rotate(12deg); }
  75% { transform: translate(245px, -45px) rotate(-8deg); }
  100% { transform: translate(0, 0) rotate(0); }
}

@media (max-width: 720px) {
  .variable-puzzle-options { gap: 5px 0; }
  .variable-puzzle-options .variable-puzzle-piece { transform: scale(0.92); transform-origin: left center; margin-right: -17px; }
  .variable-puzzle-options .variable-puzzle-piece.is-selected { transform: scale(0.92) translateY(-2px); }
  .variable-assignment { flex-wrap: nowrap; overflow-x: auto; }
  .variable-assignment .variable-puzzle-piece { min-height: 50px; }
  .variable-assignment .piece-medium { width: 130px; }
  .variable-assignment .piece-long { width: 150px; }
  .variable-assignment .puzzle-equals { width: 58px; }
  .variable-assignment .variable-puzzle-piece code { font-size: 0.64rem; }
}

.code-studio-editor textarea::placeholder {
  color: #64748b;
  font-style: italic;
}

/* Variable explainer layout */
.explainer-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 20px;
  align-items: center;
  margin-bottom: 16px;
}

.explainer-row p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.6;
}

.variable-box-art {
  width: 100%;
  height: auto;
}

.step-guide code {
  padding: 1px 6px;
  border: 2px solid var(--ink);
  border-radius: 6px;
  background: #101827;
  color: #bbf7d0;
  font-size: 0.9em;
  white-space: nowrap;
}

@media (max-width: 720px) {
  .explainer-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .variable-box-art {
    max-width: 200px;
    margin: 0 auto;
  }
}

/* Concatenation diagram in the variable builder explainer */
.explainer-intro {
  margin: 0 0 16px;
  font-size: 1.05rem;
  line-height: 1.6;
}

.concat-art {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  padding: 12px 14px;
  border: 3px solid var(--ink);
  border-radius: 12px;
  background: var(--white);
}

.concat-art > span {
  font-weight: 900;
  font-size: 1.1rem;
}

.concat-art .concat-arrow {
  color: var(--blue);
  font-size: 1.4rem;
}

.concat-art strong {
  padding: 2px 8px;
  border: 2px solid var(--ink);
  border-radius: 8px;
  background: var(--mint);
  white-space: nowrap;
}

/* === Obstacle Course === */
.oc-pickers {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 26px 0 18px;
}

.oc-stage {
  position: relative;
  overflow: hidden;
  width: min(100%, calc(68vh * 1.3333));
  margin: 0 auto;
  height: auto;
  aspect-ratio: 1448 / 1086;
  border: 5px solid var(--ink);
  border-radius: 20px;
  box-shadow: var(--small-shadow);
  background: #bae6fd;
}

.oc-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.oc-caption {
  max-width: 94%;
}

.oc-char {
  position: absolute;
  bottom: 5%;
  left: 6%;
  height: clamp(90px, 13vw, 150px);
  z-index: 4;
  transition: left 0.45s ease, bottom 0.45s ease;
  filter: drop-shadow(3px 4px 0 rgba(20, 33, 61, 0.3));
}

.oc-char.is-jumping {
  animation: ocJump 0.55s ease;
}

@keyframes ocJump {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-110px); }
}

.oc-char.is-bumping {
  animation: trayShake 0.5s ease;
}

.oc-char.is-scooping {
  animation: robotScoop 0.5s ease;
}

.oc-char.is-winning {
  animation: heroDance 0.7s ease-in-out infinite;
}

.oc-obstacle,
.oc-item,
.oc-goal {
  position: absolute;
  bottom: 6%;
  z-index: 2;
  transform: translateX(-50%);
  filter: drop-shadow(2px 3px 0 rgba(20, 33, 61, 0.25));
}

.oc-obstacle { height: clamp(70px, 10vw, 120px); }
.oc-item { height: clamp(52px, 7vw, 84px); z-index: 3; }
.oc-goal { height: clamp(42px, 6vw, 68px); animation: goalPulse 1.6s ease-in-out infinite; }

.oc-item.is-collected {
  animation: starCollect 0.5s ease forwards;
}

.oc-stage.is-winning::after {
  content: "🎉";
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 3rem;
  z-index: 5;
  animation: fadeInUp 0.5s ease both;
}

.oc-workshop {
  grid-template-columns: minmax(0, 1fr);
  margin-top: 18px;
}

.oc-palette {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0;
}

.oc-cmd {
  padding: 10px 16px;
  border: 4px solid var(--ink);
  border-radius: 12px;
  background: var(--sky);
  box-shadow: 3px 3px 0 var(--ink);
  font-weight: 900;
  font-family: "Courier New", monospace;
  cursor: pointer;
  transition: transform 0.12s ease;
}

.oc-cmd:hover { transform: translateY(-2px); }

.oc-program {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  row-gap: 10px;
  margin: 0 0 14px;
  padding: 12px 14px;
  list-style: none;
  border: 3px dashed rgba(20, 33, 61, 0.4);
  border-radius: 14px;
  min-height: 56px;
}

.oc-program li:not(.empty-story-step) {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  margin-right: 15px;
  border: 3px solid var(--ink);
  border-radius: 8px;
  background: var(--sky);
  font-family: "Courier New", monospace;
  font-weight: 900;
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
}

/* puzzle tab plugging into the next piece */
.oc-program li:not(.empty-story-step)::after {
  content: "";
  position: absolute;
  right: -13px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: inherit;
  border: 3px solid var(--ink);
}

.oc-program li:not(.empty-story-step):last-child::after {
  display: none;
}

.oc-chip-num {
  display: grid;
  place-items: center;
  width: 20px;
  height: 20px;
  border: 2px solid var(--ink);
  border-radius: 50%;
  background: var(--yellow);
  font-family: "Fredoka", sans-serif;
  font-size: 0.7rem;
}

.oc-chip-x {
  margin-left: 2px;
  color: var(--coral);
  font-weight: 900;
}

.oc-program li.is-running-step {
  background: var(--yellow);
}

.oc-program li.is-bug-step {
  background: #ffe4e6;
  border-color: var(--coral);
}

.oc-hint-panel { margin: 12px 0; }

@media (max-width: 720px) {
  .oc-pickers { grid-template-columns: minmax(0, 1fr); }
}

.oc-palette[hidden],
.oc-program[hidden],
.oc-cmd[hidden] {
  display: none;
}

/* Desks read taller; basketball sits smaller on the floor */
.oc-obstacle[src*="desk"] {
  height: clamp(88px, 13vw, 150px);
}

.oc-obstacle[src*="basketball"] {
  height: clamp(46px, 6.5vw, 76px);
}

/* Spill puddle that comes with each desk */
.oc-spill-companion {
  height: clamp(36px, 5.5vw, 60px) !important;
  z-index: 1;
}

/* Pond stepping stones and lily pads */
.oc-stone {
  position: absolute;
  z-index: 1;
  transform: translateX(-50%);
  height: auto;
  filter: drop-shadow(2px 3px 0 rgba(20, 33, 61, 0.25));
}

/* More Playground sub-heading spacing */
.playground-more {
  grid-column: 1 / -1;
  margin-top: 34px;
}

.playground-section .project-grid {
  grid-column: 1 / -1;
}

/* === Robot Recipe === */
.rr-order-card {
  grid-column: span 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: var(--white);
  box-shadow: var(--small-shadow);
}

.rr-order-layers {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.rr-order-layers .rr-mini {
  display: grid;
  justify-items: center;
  gap: 2px;
  font-size: 0.7rem;
  font-weight: 900;
}

.rr-order-layers .rr-mini svg {
  width: 56px;
  height: auto;
}

.rr-order-layers .rr-arrow {
  font-weight: 900;
  color: var(--ink);
}

.rr-stage {
  position: relative;
  overflow: hidden;
  height: clamp(300px, 36vw, 420px);
  border: 5px solid var(--ink);
  border-radius: 20px;
  box-shadow: var(--small-shadow);
  background: linear-gradient(180deg, #fde68a 0%, #fef3c7 60%);
}

.rr-counter {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 14%;
  border-top: 4px solid var(--ink);
  background: repeating-linear-gradient(90deg, #d6a35c 0 60px, #c8924b 60px 120px);
}

.rr-fridge {
  position: absolute;
  bottom: 12%;
  left: 4%;
  height: 72%;
  z-index: 1;
  filter: drop-shadow(3px 4px 0 rgba(20, 33, 61, 0.25));
}

.rr-plate-zone {
  position: absolute;
  bottom: 12%;
  right: 4%;
  width: min(34%, 300px);
  z-index: 1;
}

.rr-plate {
  width: 100%;
  height: auto;
  display: block;
}

.rr-stack {
  position: absolute;
  left: 50%;
  bottom: 38%;
  transform: translateX(-50%);
  width: 62%;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  z-index: 2;
}

.rr-stack .rr-layer {
  width: 100%;
  margin-bottom: -8px;
  animation: heldPop 0.35s ease both;
}

.rr-stack .rr-layer:first-child {
  margin-bottom: 0;
}

.rr-stack .rr-layer svg {
  display: block;
  width: 100%;
  height: auto;
}

.rr-robot-wrap {
  position: absolute;
  bottom: 9%;
  left: 42%;
  z-index: 3;
  transition: left 0.6s ease;
  display: grid;
  justify-items: center;
}

.rr-robot {
  height: clamp(96px, 13vw, 150px);
  filter: drop-shadow(3px 4px 0 rgba(20, 33, 61, 0.3));
}

.rr-robot-wrap.is-walking .rr-robot {
  animation: robotSlide 0.55s ease infinite;
}

.rr-robot-wrap.is-winning .rr-robot {
  animation: heroDance 0.7s ease-in-out infinite;
}

.rr-carry {
  width: clamp(60px, 7vw, 92px);
  margin-bottom: -6px;
  animation: moonBob 1s ease-in-out infinite;
}

.rr-carry svg {
  display: block;
  width: 100%;
  height: auto;
}

.rr-stage.is-winning::after {
  content: "🎉";
  position: absolute;
  top: 26%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 3rem;
  z-index: 5;
  animation: fadeInUp 0.5s ease both;
}

@media (max-width: 720px) {
  .rr-order-card { grid-column: auto; }
}

/* === Mood Machine === */
.mm-workshop {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
}

.mm-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.mm-controls .builder-label {
  font-family: "Courier New", monospace;
  font-weight: 900;
}

.mm-target-card p {
  margin: 0;
  font-weight: 800;
}

.mm-site {
  border: 5px solid var(--ink);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--small-shadow);
}

.mm-site-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 10px 14px;
  background: #e2e8f0;
  border-bottom: 4px solid var(--ink);
}

.mm-site-bar span {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  border: 2px solid var(--ink);
}

.mm-site-bar span:nth-child(1) { background: var(--coral); }
.mm-site-bar span:nth-child(2) { background: var(--yellow); }
.mm-site-bar span:nth-child(3) { background: var(--mint); }

.mm-site-bar em {
  margin-left: 10px;
  font-style: normal;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 3px 14px;
  background: var(--white);
  border: 2px solid var(--ink);
  border-radius: 999px;
}

.mm-site-body {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 14px;
  min-height: clamp(260px, 30vw, 360px);
  padding: 24px;
  text-align: center;
  transition: background 0.5s ease;
}

.mm-site-body .mm-message {
  margin: 0;
  font-family: "Fredoka", sans-serif;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  color: var(--white);
  text-shadow: 2px 3px 0 var(--ink);
  word-break: break-word;
}

.mm-emoji {
  display: inline-block;
  font-size: clamp(3.4rem, 7vw, 5.2rem);
  line-height: 1;
}

.bg-sunset { background: linear-gradient(180deg, #f97316 0%, #fb7185 60%, #fbbf24 100%); }
.bg-ocean { background: linear-gradient(180deg, #0ea5e9 0%, #2563eb 70%, #0f766e 100%); }
.bg-forest { background: linear-gradient(180deg, #4ade80 0%, #16a34a 60%, #166534 100%); }
.bg-night { background: linear-gradient(180deg, #0b1026 0%, #312e81 100%); }
.bg-candy { background: linear-gradient(180deg, #f9a8d4 0%, #c084fc 60%, #818cf8 100%); }

.anim-bounce { animation: mmBounce 0.9s ease-in-out infinite; }
.anim-spin { animation: mmSpin 1.6s linear infinite; }
.anim-float { animation: moonBob 2.2s ease-in-out infinite; }
.anim-shake { animation: trayShake 0.6s ease infinite; }
.anim-none { animation: none; }

@keyframes mmBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-26px); }
}

@keyframes mmSpin {
  to { transform: rotate(360deg); }
}

@media (max-width: 860px) {
  .mm-workshop { grid-template-columns: minmax(0, 1fr); }
  .mm-controls { grid-template-columns: 1fr; }
}

/* === Code Studio Quest === */
.quest-strip {
  margin-top: 18px;
  border: 4px solid var(--ink);
  border-radius: 16px;
  background: linear-gradient(90deg, #ede9fe 0%, #e0f2fe 100%);
  box-shadow: var(--small-shadow);
  padding: 12px 16px;
}

.quest-strip-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.quest-robot {
  height: 52px;
  animation: moonBob 2.4s ease-in-out infinite;
}

.quest-wizard {
  width: 86px;
  height: 86px;
  border: 0;
  background: transparent;
  object-fit: contain;
  filter: drop-shadow(0 6px 4px rgba(20, 33, 61, 0.28));
}

.quest-piggy {
  width: 92px;
  height: 86px;
  border: 0;
  background: transparent;
  object-fit: contain;
  filter: drop-shadow(0 6px 4px rgba(20, 33, 61, 0.25));
}

.quest-info {
  flex: 1;
  min-width: 0;
}

.quest-info strong {
  font-family: "Fredoka", sans-serif;
}

.quest-bar {
  height: 14px;
  margin: 6px 0 4px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: var(--white);
  overflow: hidden;
}

.quest-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--yellow), #f59e0b);
  transition: width 0.6s ease;
}

.quest-lesson-stars {
  display: flex;
  gap: 4px;
}

.quest-lesson-stars img,
.quest-map-stars img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.quest-lesson-stars img.is-dim,
.quest-map-stars img.is-dim {
  filter: grayscale(1) opacity(0.35);
}

.quest-burst-star {
  position: absolute;
  bottom: 10%;
  width: 34px;
  z-index: 9;
  pointer-events: none;
  animation: questBurst 1.4s ease-out forwards;
}

@keyframes questBurst {
  0% { transform: translateY(0) scale(0.4) rotate(0deg); opacity: 1; }
  100% { transform: translateY(-160px) scale(1.2) rotate(220deg); opacity: 0; }
}

.quest-toast {
  position: fixed;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 99;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--yellow);
  box-shadow: var(--small-shadow);
  font-family: "Fredoka", sans-serif;
  font-weight: 700;
  animation: toastIn 0.4s ease both;
}

.quest-toast img {
  width: 26px;
}

.quest-toast.is-out {
  animation: toastOut 0.5s ease both;
}

@keyframes toastIn {
  from { transform: translate(-50%, 80px); opacity: 0; }
  to { transform: translate(-50%, 0); opacity: 1; }
}

@keyframes toastOut {
  to { transform: translate(-50%, 80px); opacity: 0; }
}

.quest-map-stars {
  display: inline-flex;
  gap: 2px;
  margin-left: 8px;
  vertical-align: middle;
}

.quest-map-stars img {
  width: 18px;
  height: 18px;
}

a.is-quest-complete {
  background: #fef9c3;
}

.quest-map-total {
  font-size: 1.05rem;
}

/* === Bug Detective === */
.bd-casebar {
  display: flex;
  gap: 10px;
  margin-top: 24px;
  flex-wrap: wrap;
}

.bd-case-tab {
  padding: 8px 18px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: var(--white);
  box-shadow: 3px 3px 0 var(--ink);
  font-family: "Fredoka", sans-serif;
  font-weight: 700;
  cursor: pointer;
}

.bd-case-tab[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
}

.bd-case-tab.is-active {
  background: var(--yellow);
}

.bd-case-tab.is-solved {
  background: var(--mint);
}

.bd-stage {
  height: clamp(220px, 26vw, 300px);
  margin-bottom: 16px;
}

.bd-robot {
  position: absolute;
  bottom: 14%;
  left: 8%;
  transition: left 0.55s ease;
}

.bd-robot.is-bumping { animation: trayShake 0.5s ease; }
.bd-robot.is-jumping { animation: ocJump 0.55s ease; }
.bd-robot.is-winning { animation: heroDance 0.7s ease-in-out infinite; }

.bd-prop {
  position: absolute;
  bottom: 14%;
  z-index: 1;
  transform: translateX(-50%);
  height: clamp(44px, 6.5vw, 70px);
  filter: drop-shadow(2px 3px 0 rgba(20, 33, 61, 0.25));
}

.bd-prop.is-collected { animation: starCollect 0.5s ease forwards; }

.bd-program-title small {
  font-weight: 700;
  color: #64748b;
}

.bd-program li {
  cursor: pointer;
}

.bd-program li:hover {
  background: #fef9c3;
}

.bd-program li.is-bug-found {
  background: #ffe4e6;
  border-color: var(--coral) !important;
}

.bd-program li.is-fixed {
  background: #dcfce7;
}

.bd-fixes {
  margin: 14px 0;
  padding: 14px;
  border: 4px solid var(--ink);
  border-radius: 14px;
  background: #fef9c3;
}

.bd-stamp {
  position: absolute;
  top: 30%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-12deg);
  z-index: 6;
  padding: 10px 26px;
  border: 6px solid var(--coral);
  border-radius: 12px;
  color: var(--coral);
  font-family: "Fredoka", sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 2px;
  background: rgba(255, 255, 255, 0.85);
  animation: stampIn 0.4s ease both;
}

@keyframes stampIn {
  0% { transform: translate(-50%, -50%) rotate(-12deg) scale(2.4); opacity: 0; }
  100% { transform: translate(-50%, -50%) rotate(-12deg) scale(1); opacity: 1; }
}

/* === Mini Game Engine: live game screen === */
.gs-screen {
  margin-bottom: 16px;
  border: 5px solid var(--ink);
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(180deg, #1e1b4b 0%, #312e81 70%, #4338ca 100%);
}

.gs-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 14px;
  border-bottom: 4px solid var(--ink);
  background: #0b1026;
  color: #fde047;
  font-family: "Fredoka", sans-serif;
  font-weight: 700;
  letter-spacing: 1px;
}

.gs-score b {
  display: inline-block;
  min-width: 2ch;
  color: var(--white);
}

.gs-score b.is-ticking {
  animation: heldPop 0.4s ease;
}

.gs-world {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 130px;
  padding: 12px;
}

.gs-hero {
  height: 90px;
  filter: drop-shadow(3px 4px 0 rgba(0, 0, 0, 0.4));
}

.gs-hero.is-hopping {
  animation: mmBounce 0.5s ease;
}

.gs-hero.is-winning {
  animation: heroDance 0.7s ease-in-out infinite;
}

.gs-inv {
  display: flex;
  gap: 8px;
  padding: 10px 14px;
  border-top: 4px solid var(--ink);
  background: #0b1026;
  min-height: 54px;
  align-items: center;
}

.gs-inv .gs-slot {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 3px solid #fde047;
  border-radius: 10px;
  background: #1e1b4b;
  font-size: 1.5rem;
  animation: heldPop 0.4s ease both;
}

.gs-inv .gs-slot img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.gs-inv .gs-empty {
  color: #64748b;
  font-size: 0.85rem;
  font-weight: 800;
}

/* === Sound toggle button === */
.sound-toggle {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 999;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 3px solid #14213d;
  background: #fde047;
  font-size: 1.45rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 0 rgba(20, 33, 61, 0.25);
  transition: transform 0.15s ease;
}
.sound-toggle:hover { transform: scale(1.08); }
.sound-toggle.is-muted { background: #e5e7eb; opacity: 0.85; }
.music-toggle { bottom: 80px; font-size: 1.3rem; }

/* === Instructor guide === */
.ig-page { max-width: 1240px; }
.ig-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 18px 0 8px;
  padding: 14px 16px;
  background: #fff7e0;
  border: 3px solid #14213d;
  border-radius: 16px;
}
.ig-toc a {
  font-family: "Fredoka", sans-serif;
  font-weight: 600;
  color: #14213d;
  text-decoration: none;
  background: #fde047;
  border: 2px solid #14213d;
  border-radius: 999px;
  padding: 6px 14px;
}
.ig-toc a:hover { background: #fbbf24; }
.ig-toc .ig-print { margin-left: auto; }
.ig-section { margin-top: 34px; }
.ig-section h2 { font-family: "Fredoka", sans-serif; color: #14213d; margin-bottom: 4px; }
.ig-section h2 small { font-size: 0.6em; font-weight: 600; color: #5a6585; }
.ig-intro { color: #3c466b; max-width: 70ch; margin: 6px 0 16px; }
.ig-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.ig-grid-wide { grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); }
.ig-card {
  background: #ffffff;
  border: 3px solid #14213d;
  border-radius: 16px;
  padding: 16px 18px;
  box-shadow: 0 5px 0 rgba(20, 33, 61, 0.15);
}
.ig-card h4 { font-family: "Fredoka", sans-serif; color: #14213d; margin: 0 0 8px; font-size: 1.05rem; }
.ig-card p { margin: 0 0 8px; font-size: 0.92rem; line-height: 1.5; color: #2c3554; }
.ig-card code { background: #eef1f8; border-radius: 6px; padding: 1px 5px; font-size: 0.86em; }
.ig-key { margin-top: 10px; border: 2px dashed #14213d; border-radius: 12px; background: #f5fbf7; }
.ig-key summary {
  cursor: pointer;
  font-family: "Fredoka", sans-serif;
  font-weight: 600;
  color: #14213d;
  padding: 10px 14px;
  list-style-position: inside;
}
.ig-key[open] summary { border-bottom: 2px dashed #14213d; }
.ig-key pre {
  margin: 10px 14px;
  padding: 12px 14px;
  background: #14213d;
  color: #d9e2ff;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.5;
}
.ig-key p, .ig-key ul { margin: 10px 14px; font-size: 0.9rem; color: #2c3554; }
.ig-list { padding-left: 20px; }
.ig-list li { margin-bottom: 6px; }
@media print {
  .site-header, .sound-toggle, .music-toggle, .ig-print { display: none !important; }
  .ig-key { page-break-inside: avoid; }
  .ig-key summary::after { content: " (answers below)"; }
  .ig-key:not([open]) > *:not(summary) { display: block; }
}
.ig-key pre code { background: transparent; color: inherit; padding: 0; border-radius: 0; font-size: inherit; }

/* Code Studio Level 3 Challenge: Cave Control Debugger */
.cs3-debug-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  align-items: center;
  gap: 24px;
  background: linear-gradient(135deg, #fff4ad, #ffd2c7 55%, #ddd6fe);
}
.cs3-debug-hero-art {
  display: grid;
  place-items: center;
  gap: 6px;
  color: #b91c1c;
  font-family: "Fredoka", sans-serif;
  letter-spacing: .08em;
}
.cs3-debug-hero-art img { width: min(210px, 100%); max-height: 150px; object-fit: contain; }
.cs3-debug-progress,
.cs3-debug-checks { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 14px 0; }
.cs3-debug-progress span,
.cs3-debug-checks span {
  padding: 10px 12px;
  border: 3px solid #14213d;
  border-radius: 14px;
  background: #fff;
  color: #536078;
  font-weight: 900;
  text-align: center;
}
.cs3-debug-progress span.is-current { background: #fde047; color: #14213d; transform: translateY(-2px); }
.cs3-debug-progress span.is-done,
.cs3-debug-checks span.is-done { background: #bbf7d0; color: #166534; }
.cs3-debug-app { display: grid; grid-template-columns: minmax(360px, .85fr) minmax(500px, 1.15fr); gap: 18px; align-items: stretch; }
.cs3-debug-controls h3, .cs3-debug-controls h4 { margin-bottom: 8px; }
.cs3-debug-code {
  min-height: 205px;
  margin: 14px 0;
  padding: 20px;
  overflow: auto;
  border: 5px solid #14213d;
  border-radius: 18px;
  background: #101827;
  color: #bbf7d0;
  font: 800 1.05rem/1.55 ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-wrap;
}
.cs3-debug-answers { display: grid; gap: 8px; margin-bottom: 14px; }
.cs3-debug-answers button {
  padding: 11px 14px;
  border: 3px solid #14213d;
  border-radius: 13px;
  background: #eef8ff;
  color: #14213d;
  font: 800 1rem ui-monospace, SFMono-Regular, Menlo, monospace;
  cursor: pointer;
}
.cs3-debug-answers button:hover,
.cs3-debug-answers button.is-selected { background: #fde047; transform: translateX(4px); }
.cs3-debug-answers button.is-wrong { background: #fecaca; color: #991b1b; }
.cs3-debug-stage {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  border: 5px solid #14213d;
  border-radius: 22px;
  background: #111827 url("./assets/images/cave/cave.png") center/cover no-repeat;
}
#cs3DebugObject {
  position: absolute;
  left: 8%;
  bottom: 25%;
  width: 31%;
  height: 39%;
  object-fit: contain;
  filter: grayscale(.8) brightness(.65);
  transition: filter .3s, transform .3s;
}
.cs3-debug-treasure { position: absolute; right: 5%; bottom: 24%; width: 38%; max-height: 44%; object-fit: contain; }
.cs3-debug-status,
.cs3-debug-result {
  position: absolute;
  z-index: 3;
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 88%;
  padding: 9px 18px;
  border: 4px solid #14213d;
  border-radius: 999px;
  background: #fff;
  color: #14213d;
  font-weight: 900;
  text-align: center;
}
.cs3-debug-status { top: 18px; background: #fecaca; color: #991b1b; }
.cs3-debug-result { bottom: 16px; }
.cs3-debug-stage.is-success #cs3DebugObject { filter: none; animation: cs3DebugActivate .75s ease both; }
.cs3-debug-stage.is-success .cs3-debug-status { background: #bbf7d0; color: #166534; }
.cs3-debug-stage.is-error { animation: cs3DebugShake .35s ease; }
.cs3-debug-stage.is-error .cs3-debug-status { background: #ef4444; color: #fff; }
.cs3-debug-stage.is-final .cs3-debug-treasure { animation: cs3DebugTreasure 1s ease both; }
@keyframes cs3DebugActivate { 50% { transform: scale(1.2) rotate(-5deg); filter: drop-shadow(0 0 24px #fde047); } }
@keyframes cs3DebugTreasure { 50% { transform: scale(1.14); filter: drop-shadow(0 0 30px #fde047); } }
@keyframes cs3DebugShake { 25% { transform: translateX(-8px); } 75% { transform: translateX(8px); } }
@media (max-width: 900px) {
  .cs3-debug-hero, .cs3-debug-app { grid-template-columns: 1fr; }
  .cs3-debug-hero-art { display: none; }
  .cs3-debug-stage { min-height: 360px; }
}
@media (max-width: 580px) {
  .cs3-debug-progress, .cs3-debug-checks { grid-template-columns: 1fr; }
}

/* Code Studio Level 4: Real JavaScript Loops */
.cs4-loop-hero { display: grid; grid-template-columns: minmax(0,1fr) 340px; align-items: center; gap: 22px; background: linear-gradient(135deg,#fff7bd,#d9f99d 52%,#bae6fd); }
.cs4-loop-recipe { display: grid; gap: 8px; padding: 18px; border: 4px solid #14213d; border-radius: 20px; background: rgba(255,255,255,.82); text-align: center; }
.cs4-loop-recipe b { font: 700 1.25rem "Fredoka",sans-serif; }
.cs4-loop-recipe code { padding: 10px; border-radius: 12px; background: #101827; color: #bbf7d0; font-weight: 900; }
.cs4-loop-recipe span { font-weight: 800; }
.cs4-loop-app { display: grid; grid-template-columns: minmax(390px,.9fr) minmax(540px,1.1fr); gap: 18px; }
.cs4-loop-choices { display: grid; grid-template-columns: repeat(3,1fr); gap: 8px; margin: 12px 0; }
.cs4-loop-choices button { padding: 12px 8px; border: 3px solid #14213d; border-radius: 14px; background: #eef8ff; color: #14213d; font: 800 1rem "Nunito",sans-serif; cursor: pointer; }
.cs4-loop-choices button.is-selected { background: #fde047; transform: translateY(-3px); box-shadow: 0 4px 0 #14213d; }
.cs4-loop-parts { display: grid; grid-template-columns: repeat(3,1fr); gap: 7px; margin-bottom: 12px; }
.cs4-loop-parts span { display: grid; gap: 4px; min-width: 0; padding: 9px 6px; border: 3px solid #14213d; border-radius: 12px; background: #fff8d8; text-align: center; }
.cs4-loop-parts b { font-size: .72rem; color: #536078; }
.cs4-loop-parts code { overflow: hidden; font-size: .8rem; font-weight: 900; text-overflow: ellipsis; }
.cs4-loop-code { min-height: 190px; margin: 0 0 12px; padding: 18px; border: 5px solid #14213d; border-radius: 18px; background: #101827; color: #bbf7d0; font: 800 1rem/1.55 ui-monospace,SFMono-Regular,Menlo,monospace; white-space: pre-wrap; }
.cs4-loop-stage { position: relative; min-height: 430px; overflow: hidden; border: 5px solid #14213d; border-radius: 22px; background: url("./assets/images/obstacle_course/gym.png") center/cover no-repeat; }
.cs4-loop-stage::after { content:""; position:absolute; inset:auto 0 0; height:28%; background:linear-gradient(transparent,rgba(16,24,39,.3)); pointer-events:none; }
.cs4-loop-counter { position: absolute; z-index: 5; top: 16px; left: 16px; display: grid; min-width: 126px; padding: 8px 14px; border: 4px solid #14213d; border-radius: 15px; background: #fff; text-align: center; }
.cs4-loop-counter small { font-weight: 900; color: #64748b; }
.cs4-loop-counter b { font: 800 1.15rem ui-monospace,SFMono-Regular,Menlo,monospace; }
.cs4-loop-stars { position: absolute; z-index: 2; left: 12%; right: 8%; bottom: 28%; display: flex; justify-content: space-between; align-items: center; }
.cs4-loop-star { width: 9%; min-width: 32px; max-width: 58px; filter: drop-shadow(0 5px 4px rgba(0,0,0,.35)); transition: opacity .25s,transform .25s; }
.cs4-loop-star.is-collected { opacity: .18; transform: scale(.35) rotate(80deg); }
.cs4-loop-robot { position: absolute; z-index: 3; left: 3%; bottom: 8%; width: 18%; max-height: 38%; object-fit: contain; transform: translateX(0); transition: left .45s ease,bottom .22s ease,transform .22s ease; filter: drop-shadow(0 8px 5px rgba(0,0,0,.35)); }
.cs4-loop-robot.is-hopping { bottom: 18%; transform: rotate(-8deg) scale(1.06); }
.cs4-loop-result { position: absolute; z-index: 6; left: 50%; bottom: 14px; transform: translateX(-50%); width: max-content; max-width: 88%; padding: 9px 18px; border: 4px solid #14213d; border-radius: 999px; background: #fde047; color: #14213d; font-weight: 900; text-align: center; }
.cs4-loop-cycle { display: grid; grid-template-columns: repeat(4,1fr); gap: 7px; margin-top: 12px; }
.cs4-loop-cycle span { padding: 9px 5px; border: 3px solid #14213d; border-radius: 12px; background: #fff; color: #64748b; font-weight: 900; text-align: center; }
.cs4-loop-cycle span.is-active { background: #fde047; color: #14213d; transform: translateY(-2px); }
.cs4-loop-cycle span.is-done { background: #bbf7d0; color: #166534; }
@media (max-width: 940px) { .cs4-loop-hero,.cs4-loop-app { grid-template-columns:1fr; } .cs4-loop-stage { min-height:380px; } }
@media (max-width: 580px) { .cs4-loop-recipe { display:none; } .cs4-loop-parts,.cs4-loop-cycle { grid-template-columns:1fr 1fr; } .cs4-loop-stage { min-height:330px; } }

/* Code Studio Level 4 Builder: Robot Gym */
.cs4-builder-hero { display:grid; grid-template-columns:minmax(0,1fr) 280px; gap:22px; align-items:center; background:linear-gradient(135deg,#dbeafe,#bbf7d0 55%,#fef3c7); }
.cs4-builder-goal { display:grid; place-items:center; gap:4px; padding:15px; border:4px solid #14213d; border-radius:20px; background:rgba(255,255,255,.85); text-align:center; }
.cs4-builder-goal strong { color:#536078; font-size:.78rem; letter-spacing:.08em; }
.cs4-builder-goal span { font:700 2rem "Fredoka",sans-serif; }
.cs4-builder-goal small { font-weight:800; }
.cs4-builder-app { display:grid; grid-template-columns:minmax(430px,.95fr) minmax(520px,1.05fr); gap:18px; }
.cs4-builder-groups { display:grid; gap:8px; margin:12px 0; }
.cs4-builder-group { padding:9px 11px; border:3px solid #14213d; border-radius:14px; background:#f8fbff; }
.cs4-builder-group > b { display:block; margin-bottom:6px; }
.cs4-builder-group > div { display:grid; grid-template-columns:1fr 1fr; gap:7px; }
.cs4-builder-group button { padding:9px 7px; border:3px solid #14213d; border-radius:11px; background:#fff; color:#14213d; font:800 .86rem ui-monospace,SFMono-Regular,Menlo,monospace; cursor:pointer; }
.cs4-builder-group button.is-selected { background:#fde047; transform:translateY(-2px); }
.cs4-builder-group button.is-wrong { background:#fecaca; color:#991b1b; }
.cs4-builder-code { min-height:150px; margin:12px 0; padding:16px; border:5px solid #14213d; border-radius:17px; background:#101827; color:#bbf7d0; font:800 .94rem/1.45 ui-monospace,SFMono-Regular,Menlo,monospace; white-space:pre-wrap; }
.cs4-builder-stage { position:relative; min-height:430px; overflow:hidden; border:5px solid #14213d; border-radius:22px; background:url("./assets/images/obstacle_course/gym.png") center/cover no-repeat; }
.cs4-builder-stage::after { content:""; position:absolute; inset:auto 0 0; height:24%; background:linear-gradient(transparent,rgba(15,23,42,.35)); }
.cs4-builder-score { position:absolute; z-index:5; top:16px; left:16px; display:grid; min-width:110px; padding:8px 13px; border:4px solid #14213d; border-radius:14px; background:#fff; text-align:center; }
.cs4-builder-score small { color:#64748b; font-weight:900; }
.cs4-builder-score b { font:800 1.15rem ui-monospace,SFMono-Regular,Menlo,monospace; }
.cs4-builder-robot { position:absolute; z-index:3; left:13%; bottom:11%; width:28%; max-height:48%; object-fit:contain; filter:drop-shadow(0 8px 5px rgba(0,0,0,.4)); }
.cs4-builder-ball { position:absolute; z-index:4; left:37%; bottom:13%; width:13%; max-height:18%; object-fit:contain; filter:drop-shadow(0 7px 4px rgba(0,0,0,.35)); }
.cs4-builder-ball.is-bouncing { animation:cs4BuilderBounce .72s ease; }
.cs4-builder-rack { position:absolute; z-index:2; right:5%; bottom:10%; width:31%; max-height:49%; object-fit:contain; }
.cs4-builder-result { position:absolute; z-index:6; left:50%; bottom:14px; transform:translateX(-50%); width:max-content; max-width:88%; padding:9px 18px; border:4px solid #14213d; border-radius:999px; background:#fde047; font-weight:900; text-align:center; }
.cs4-builder-stage.is-error { animation:cs3DebugShake .35s ease; }
.cs4-builder-stage.is-success .cs4-builder-score { background:#bbf7d0; color:#166534; }
.cs4-builder-checks { display:grid; grid-template-columns:repeat(4,1fr); gap:7px; margin-top:12px; }
.cs4-builder-checks span { padding:8px 5px; border:3px solid #14213d; border-radius:11px; background:#fff; color:#64748b; font-weight:900; text-align:center; }
.cs4-builder-checks span.is-done { background:#bbf7d0; color:#166534; }
@keyframes cs4BuilderBounce { 0%,100% { bottom:13%; transform:rotate(0); } 45% { bottom:62%; transform:rotate(190deg) scale(.92); } }
@media (max-width:940px) { .cs4-builder-hero,.cs4-builder-app { grid-template-columns:1fr; } }
@media (max-width:580px) { .cs4-builder-goal { display:none; } .cs4-builder-group > div,.cs4-builder-checks { grid-template-columns:1fr 1fr; } .cs4-builder-stage { min-height:340px; } }

/* Code Studio Level 4 Challenge: Frog Pond */
.cs4-challenge-hero { display:grid; grid-template-columns:minmax(0,1fr) 300px; gap:22px; align-items:center; background:linear-gradient(135deg,#dcfce7,#bae6fd 55%,#ddd6fe); }
.cs4-challenge-mission { display:grid; place-items:center; gap:5px; padding:16px; border:4px solid #14213d; border-radius:20px; background:rgba(255,255,255,.85); text-align:center; }
.cs4-challenge-mission b { color:#536078; font-size:.78rem; letter-spacing:.08em; }
.cs4-challenge-mission span { font:700 1.35rem "Fredoka",sans-serif; }
.cs4-challenge-mission small { font-weight:800; }
.cs4-challenge-progress,.cs4-challenge-checks { display:grid; grid-template-columns:repeat(3,1fr); gap:9px; margin:13px 0; }
.cs4-challenge-progress span,.cs4-challenge-checks span { padding:9px 7px; border:3px solid #14213d; border-radius:12px; background:#fff; color:#64748b; font-weight:900; text-align:center; }
.cs4-challenge-progress span.is-current { background:#fde047; color:#14213d; transform:translateY(-2px); }
.cs4-challenge-progress span.is-done,.cs4-challenge-checks span.is-done { background:#bbf7d0; color:#166534; }
.cs4-challenge-app { display:grid; grid-template-columns:minmax(410px,.9fr) minmax(540px,1.1fr); gap:18px; }
.cs4-challenge-code { min-height:180px; margin:12px 0; padding:18px; border:5px solid #14213d; border-radius:18px; background:#101827; color:#bbf7d0; font:800 1rem/1.55 ui-monospace,SFMono-Regular,Menlo,monospace; white-space:pre-wrap; }
.cs4-challenge-answers { display:grid; gap:8px; margin:9px 0 13px; }
.cs4-challenge-answers button { padding:10px 12px; border:3px solid #14213d; border-radius:12px; background:#eef8ff; color:#14213d; font:800 .95rem ui-monospace,SFMono-Regular,Menlo,monospace; cursor:pointer; }
.cs4-challenge-answers button.is-selected { background:#fde047; transform:translateX(4px); }
.cs4-challenge-answers button.is-wrong { background:#fecaca; color:#991b1b; }
.cs4-challenge-stage { position:relative; min-height:430px; overflow:hidden; border:5px solid #14213d; border-radius:22px; background:url("./assets/images/obstacle_course/pond.png") center/cover no-repeat; }
.cs4-challenge-stage::after { content:""; position:absolute; inset:auto 0 0; height:20%; background:linear-gradient(transparent,rgba(15,23,42,.25)); pointer-events:none; }
.cs4-challenge-counter { position:absolute; z-index:6; top:15px; left:15px; display:grid; min-width:105px; padding:8px 13px; border:4px solid #14213d; border-radius:14px; background:#fff; text-align:center; }
.cs4-challenge-counter small { color:#64748b; font-weight:900; }.cs4-challenge-counter b { font:800 1.1rem ui-monospace,SFMono-Regular,Menlo,monospace; }
.cs4-challenge-pads { position:absolute; z-index:2; left:12%; right:8%; bottom:27%; display:flex; justify-content:space-between; align-items:center; }
.cs4-challenge-pad { width:14%; max-width:86px; filter:drop-shadow(0 7px 4px rgba(0,0,0,.35)); }
.cs4-challenge-pad.is-visited { filter:drop-shadow(0 0 15px #fde047) brightness(1.2); transform:scale(1.06); }
.cs4-challenge-frog { position:absolute; z-index:4; left:5%; bottom:12%; width:18%; max-height:34%; object-fit:contain; transition:left .5s ease,bottom .25s ease,transform .25s ease; filter:drop-shadow(0 8px 5px rgba(0,0,0,.35)); }
.cs4-challenge-frog.is-jumping { bottom:38%; transform:rotate(-10deg) scale(1.1); }
.cs4-challenge-result { position:absolute; z-index:7; left:50%; bottom:14px; transform:translateX(-50%); width:max-content; max-width:88%; padding:9px 18px; border:4px solid #14213d; border-radius:999px; background:#fde047; font-weight:900; text-align:center; }
.cs4-challenge-stage.is-error { animation:cs3DebugShake .35s ease; }
.cs4-challenge-stage.is-complete .cs4-challenge-counter { background:#bbf7d0; color:#166534; }
@media (max-width:940px) { .cs4-challenge-hero,.cs4-challenge-app { grid-template-columns:1fr; } }
@media (max-width:580px) { .cs4-challenge-mission { display:none; } .cs4-challenge-progress,.cs4-challenge-checks { grid-template-columns:1fr; } .cs4-challenge-stage { min-height:340px; } }

/* Code Studio Level 5: Real JavaScript Functions */
.cs5-function-hero { display:grid; grid-template-columns:minmax(0,1fr) 330px; gap:22px; align-items:center; background:linear-gradient(135deg,#e0e7ff,#ddd6fe 52%,#fef3c7); }
.cs5-function-metaphor { display:grid; gap:7px; padding:17px; border:4px solid #14213d; border-radius:20px; background:rgba(255,255,255,.86); text-align:center; }
.cs5-function-metaphor b { color:#536078; font-size:.78rem; letter-spacing:.08em; }.cs5-function-metaphor code { padding:10px; border-radius:12px; background:#101827; color:#bbf7d0; font-size:1.05rem; font-weight:900; }.cs5-function-metaphor span { font-weight:800; }
.cs5-function-app { display:grid; grid-template-columns:minmax(410px,.9fr) minmax(540px,1.1fr); gap:18px; }
.cs5-function-actions { display:grid; grid-template-columns:1fr 1fr; gap:9px; margin:12px 0; }
.cs5-function-actions button { display:grid; gap:3px; padding:12px; border:4px solid #14213d; border-radius:15px; background:#eef8ff; color:#14213d; cursor:pointer; }
.cs5-function-actions button:first-child { background:#fff8d8; }.cs5-function-actions button:disabled { opacity:.45; cursor:not-allowed; }.cs5-function-actions button.is-done { background:#bbf7d0; }
.cs5-function-actions b { font:700 1rem "Fredoka",sans-serif; }.cs5-function-actions small { font-weight:800; }
.cs5-function-code { min-height:245px; margin:12px 0; padding:18px; border:5px solid #14213d; border-radius:18px; background:#101827; color:#bbf7d0; font:800 1rem/1.5 ui-monospace,SFMono-Regular,Menlo,monospace; white-space:pre-wrap; }
.cs5-function-lesson { display:grid; gap:7px; margin-bottom:12px; }.cs5-function-lesson span { padding:9px 11px; border:3px solid #14213d; border-radius:12px; background:#f8fbff; font-weight:800; }.cs5-function-lesson b { color:#6d28d9; }
.cs5-function-stage { position:relative; min-height:430px; overflow:hidden; border:5px solid #14213d; border-radius:22px; background:url("./assets/images/launchpad.png") center/cover no-repeat; }
.cs5-function-stage::after { content:""; position:absolute; inset:auto 0 0; height:22%; background:linear-gradient(transparent,rgba(15,23,42,.35)); pointer-events:none; }
.cs5-function-call-count { position:absolute; z-index:5; top:15px; left:15px; display:grid; min-width:105px; padding:8px 13px; border:4px solid #14213d; border-radius:14px; background:#fff; text-align:center; }.cs5-function-call-count small { color:#64748b; font-weight:900; }.cs5-function-call-count b { font:800 1.1rem ui-monospace,SFMono-Regular,Menlo,monospace; }
.cs5-function-rocket { position:absolute; z-index:3; left:34%; bottom:7%; width:32%; height:62%; object-fit:contain; filter:drop-shadow(0 9px 6px rgba(0,0,0,.45)); }
.cs5-function-stage.is-checking .cs5-function-rocket { animation:cs5RocketCheck .5s ease; }.cs5-function-stage.is-launching .cs5-function-rocket { animation:cs5RocketLaunch 1.15s ease-in forwards; }
.cs5-function-status { position:absolute; z-index:6; left:50%; bottom:14px; transform:translateX(-50%); width:max-content; max-width:88%; padding:9px 18px; border:4px solid #14213d; border-radius:999px; background:#fecaca; color:#991b1b; font-weight:900; text-align:center; }.cs5-function-stage.is-defined .cs5-function-status { background:#fde047; color:#14213d; }.cs5-function-stage.is-success .cs5-function-status { background:#bbf7d0; color:#166534; }
.cs5-function-steps,.cs5-function-goals { display:grid; gap:7px; margin-top:10px; }.cs5-function-steps { grid-template-columns:repeat(3,1fr); }.cs5-function-goals { grid-template-columns:repeat(3,1fr); }
.cs5-function-steps span,.cs5-function-goals span { padding:8px 5px; border:3px solid #14213d; border-radius:11px; background:#fff; color:#64748b; font-weight:900; text-align:center; }.cs5-function-steps span.is-active { background:#fde047; color:#14213d; transform:translateY(-2px); }.cs5-function-goals span.is-done { background:#bbf7d0; color:#166534; }
@keyframes cs5RocketCheck { 25% { transform:translateX(-5px); } 75% { transform:translateX(5px); } }
@keyframes cs5RocketLaunch { 0% { bottom:7%; } 25% { bottom:10%; transform:scale(1.03); } 100% { bottom:105%; transform:scale(.72); } }
@media (max-width:940px) { .cs5-function-hero,.cs5-function-app { grid-template-columns:1fr; } }
@media (max-width:580px) { .cs5-function-metaphor { display:none; } .cs5-function-actions,.cs5-function-steps,.cs5-function-goals { grid-template-columns:1fr; } .cs5-function-stage { min-height:340px; } }

/* Code Studio Level 5 Builder: Alien Introductions */
.cs5-builder-hero { display:grid; grid-template-columns:minmax(0,1fr) 350px; gap:22px; align-items:center; background:linear-gradient(135deg,#dbeafe,#c4b5fd 52%,#bbf7d0); }
.cs5-builder-map { display:grid; grid-template-columns:auto 1fr; gap:5px 10px; padding:15px; border:4px solid #14213d; border-radius:20px; background:rgba(255,255,255,.86); align-items:center; }.cs5-builder-map b { color:#536078; font-size:.72rem; letter-spacing:.06em; }.cs5-builder-map code { padding:6px 8px; border-radius:8px; background:#101827; color:#bbf7d0; font-weight:900; }.cs5-builder-map span { grid-column:1/-1; font-size:.82rem; font-weight:800; }
.cs5-builder-app { display:grid; grid-template-columns:minmax(430px,.95fr) minmax(520px,1.05fr); gap:18px; }
.cs5-builder-groups { display:grid; gap:9px; margin:12px 0; }.cs5-builder-group { padding:10px; border:3px solid #14213d; border-radius:14px; background:#f8fbff; }.cs5-builder-group > b { display:block; margin-bottom:7px; }.cs5-builder-group > div { display:grid; grid-template-columns:1fr 1fr; gap:7px; }.cs5-builder-group button { padding:10px 7px; border:3px solid #14213d; border-radius:11px; background:#fff; color:#14213d; font:800 .78rem ui-monospace,SFMono-Regular,Menlo,monospace; cursor:pointer; }.cs5-builder-group button.is-selected { background:#fde047; }.cs5-builder-group button.is-wrong { background:#fecaca; color:#991b1b; }
.cs5-builder-code { min-height:150px; margin:12px 0; padding:16px; border:5px solid #14213d; border-radius:17px; background:#101827; color:#bbf7d0; font:800 .94rem/1.5 ui-monospace,SFMono-Regular,Menlo,monospace; white-space:pre-wrap; }
.cs5-builder-caller { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin:12px 0; padding:12px; border:3px dashed #14213d; border-radius:14px; background:#eefcff; }.cs5-builder-caller .eyebrow,.cs5-builder-caller button { grid-column:1/-1; }.cs5-builder-caller label { display:grid; gap:4px; font-weight:900; }.cs5-builder-caller select { padding:9px; border:3px solid #14213d; border-radius:10px; background:#fff; color:#14213d; font-weight:900; }
.cs5-builder-stage { position:relative; min-height:430px; overflow:hidden; border:5px solid #14213d; border-radius:22px; background:url("./assets/images/alien/alien_lab.png") center/cover no-repeat; }.cs5-builder-stage::after { content:""; position:absolute; inset:auto 0 0; height:22%; background:linear-gradient(transparent,rgba(15,23,42,.42)); pointer-events:none; }
.cs5-builder-function-card { position:absolute; z-index:6; top:14px; left:50%; transform:translateX(-50%); display:grid; width:max-content; max-width:85%; padding:8px 15px; border:4px solid #14213d; border-radius:14px; background:#fff; text-align:center; }.cs5-builder-function-card small { color:#64748b; font-weight:900; }.cs5-builder-function-card b { font:800 1rem ui-monospace,SFMono-Regular,Menlo,monospace; }
.cs5-builder-crew { position:absolute; z-index:3; inset:22% 7% 17%; display:grid; grid-template-columns:1fr 1fr; gap:5%; align-items:end; }.cs5-builder-alien { display:grid; place-items:center; align-content:end; height:100%; padding:8px; border:4px solid rgba(255,255,255,.55); border-radius:20px; background:rgba(15,23,42,.35); color:#fff; text-align:center; }.cs5-builder-alien img { width:80%; height:72%; object-fit:contain; filter:grayscale(.8) brightness(.7) drop-shadow(0 8px 4px rgba(0,0,0,.4)); transition:.3s; }.cs5-builder-alien strong { font-size:1.1rem; }.cs5-builder-alien span { font-weight:900; }.cs5-builder-alien.is-introduced { background:rgba(22,101,52,.4); }.cs5-builder-alien.is-introduced img { filter:drop-shadow(0 0 18px #fde047); transform:scale(1.05); }
.cs5-builder-result { position:absolute; z-index:7; left:50%; bottom:13px; transform:translateX(-50%); width:max-content; max-width:88%; padding:9px 18px; border:4px solid #14213d; border-radius:999px; background:#fde047; font-weight:900; text-align:center; }
.cs5-builder-goals { display:grid; grid-template-columns:repeat(3,1fr); gap:7px; margin-top:10px; }.cs5-builder-goals span { padding:8px 5px; border:3px solid #14213d; border-radius:11px; background:#fff; color:#64748b; font-weight:900; text-align:center; }.cs5-builder-goals span.is-done { background:#bbf7d0; color:#166534; }
@media (max-width:940px) { .cs5-builder-hero,.cs5-builder-app { grid-template-columns:1fr; } }
@media (max-width:580px) { .cs5-builder-map { display:none; } .cs5-builder-group > div,.cs5-builder-caller,.cs5-builder-goals { grid-template-columns:1fr; } .cs5-builder-stage { min-height:350px; } }

/* Code Studio Level 5 Challenge: Space Rescue */
.cs5-challenge-hero { display:grid; grid-template-columns:minmax(0,1fr) 330px; gap:22px; align-items:center; background:transparent; border:0; border-radius:0; box-shadow:none; padding-left:0; padding-right:0; }
.cs5-challenge-brief { display:grid; grid-template-columns:auto 1fr; gap:7px 10px; align-items:center; padding:16px; border:4px solid #14213d; border-radius:20px; background:rgba(255,255,255,.86); }.cs5-challenge-brief b { color:#536078; font-size:.72rem; letter-spacing:.06em; }.cs5-challenge-brief code { padding:7px; border-radius:9px; background:#101827; color:#bbf7d0; font-weight:900; }.cs5-challenge-brief span { font-weight:900; }
.cs5-challenge-app { display:grid; grid-template-columns:minmax(410px,.9fr) minmax(540px,1.1fr); gap:18px; }
.cs5-challenge-options { display:grid; grid-template-columns:1fr 1fr; gap:8px; margin:13px 0; }.cs5-challenge-options button { padding:11px; border:3px solid #14213d; border-radius:12px; background:#eef8ff; color:#14213d; font:800 .95rem ui-monospace,SFMono-Regular,Menlo,monospace; cursor:pointer; }.cs5-challenge-options button:disabled { opacity:.35; cursor:not-allowed; }.cs5-challenge-options button.is-picked { background:#bbf7d0; color:#166534; }
.cs5-challenge-code { min-height:245px; margin:12px 0; padding:17px; border:5px solid #14213d; border-radius:18px; background:#101827; color:#bbf7d0; font:800 .94rem/1.45 ui-monospace,SFMono-Regular,Menlo,monospace; white-space:pre-wrap; }
.cs5-challenge-stage { position:relative; min-height:430px; overflow:hidden; border:5px solid #14213d; border-radius:22px; background:#0f172a; }.cs5-challenge-stage > img { position:absolute; inset:0; width:100%; height:100%; object-fit:cover; transition:opacity .25s,transform .35s; }.cs5-challenge-stage.is-running > img { animation:cs5RescueReveal .7s ease; }
.cs5-challenge-call { position:absolute; z-index:5; top:15px; left:50%; transform:translateX(-50%); display:grid; width:max-content; max-width:88%; padding:8px 15px; border:4px solid #14213d; border-radius:14px; background:#fff; text-align:center; }.cs5-challenge-call small { color:#64748b; font-weight:900; }.cs5-challenge-call b { font:800 1rem ui-monospace,SFMono-Regular,Menlo,monospace; }
.cs5-challenge-result { position:absolute; z-index:6; left:50%; bottom:14px; transform:translateX(-50%); width:max-content; max-width:88%; padding:9px 18px; border:4px solid #14213d; border-radius:999px; background:#fde047; font-weight:900; text-align:center; }.cs5-challenge-stage.is-error { animation:cs3DebugShake .35s ease; }.cs5-challenge-stage.is-complete .cs5-challenge-result { background:#bbf7d0; color:#166534; }
.cs5-challenge-steps { display:grid; grid-template-columns:repeat(4,1fr); gap:7px; margin-top:10px; }.cs5-challenge-steps span { padding:8px 5px; border:3px solid #14213d; border-radius:11px; background:#fff; color:#64748b; font-weight:900; text-align:center; }.cs5-challenge-steps span.is-active { background:#fde047; color:#14213d; transform:translateY(-2px); }.cs5-challenge-steps span.is-done { background:#bbf7d0; color:#166534; }
@keyframes cs5RescueReveal { 0% { opacity:.5; transform:scale(.96); } 60% { filter:brightness(1.25); } 100% { opacity:1; transform:scale(1); } }
@media (max-width:940px) { .cs5-challenge-hero,.cs5-challenge-app { grid-template-columns:1fr; } }
@media (max-width:580px) { .cs5-challenge-brief { display:none; } .cs5-challenge-options,.cs5-challenge-steps { grid-template-columns:1fr 1fr; } .cs5-challenge-stage { min-height:340px; } }
/* === Code Studio 6: lunchbox arrays === */
.array-lunch-explainer .explainer-row {
  align-items: center;
}

.array-zero-callout {
  margin-top: 0.8rem;
  padding: 0.75rem 0.9rem;
  border: 3px dashed var(--ink);
  border-radius: 16px;
  background: #fff8c9;
}

.lunchbox-index-preview {
  position: relative;
  flex: 0 0 290px;
  aspect-ratio: 1;
}

.lunchbox-preview-base,
.array-lunchbox-base {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.lunchbox-preview-food,
.array-food-slot {
  position: absolute;
  display: grid;
  place-items: center;
}

.lunchbox-preview-food img,
.array-food-slot img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 7px 5px rgb(20 33 61 / 0.22));
}

.lunchbox-preview-food span,
.array-index-label {
  position: absolute;
  z-index: 2;
  padding: 0.2rem 0.45rem;
  border: 2px solid var(--ink);
  border-radius: 999px;
  background: #ffe45c;
  color: var(--ink);
  font-family: "Courier New", monospace;
  font-size: 0.72rem;
  font-weight: 900;
  white-space: nowrap;
}

.lunchbox-preview-food span {
  top: -0.45rem;
  left: 50%;
  transform: translateX(-50%);
}

.preview-sandwich { left: 20%; top: 55%; width: 34%; height: 24%; }
.preview-cookies { left: 57%; top: 55%; width: 16%; height: 16%; }
.preview-carrots { left: 72%; top: 55%; width: 14%; height: 16%; }

.array-lunchbox-stage {
  position: relative;
  width: min(100%, 680px);
  margin: 0 auto 1rem;
  aspect-ratio: 1;
  overflow: hidden;
  border: 7px solid var(--ink);
  border-radius: 32px;
  background: linear-gradient(180deg, #ffeaf4, #dff6ff);
}

.array-lunchbox-base {
  position: absolute;
  inset: 0;
}

.array-food-slot {
  opacity: 0;
  transform: translateY(-70px) scale(0.65) rotate(-8deg);
  transition: opacity 180ms ease, transform 520ms cubic-bezier(.2, .9, .25, 1.25);
}

.array-food-slot.is-packed {
  opacity: 1;
  transform: translateY(0) scale(1) rotate(0);
}

.array-food-slot.is-current img {
  animation: lunch-food-pop 600ms ease both;
}

.array-food-slot-0 { left: 18%; top: 56%; width: 35%; height: 24%; }
.array-food-slot-1 { left: 57%; top: 56%; width: 17%; height: 17%; }
.array-food-slot-2 { left: 72%; top: 56%; width: 15%; height: 17%; }

.array-index-label {
  top: -0.55rem;
  left: 50%;
  transform: translateX(-50%);
}

.array-lunch-status {
  position: absolute;
  left: 50%;
  bottom: 4.5%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 88%;
  padding: 0.6rem 1rem;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #ffe45c;
  color: var(--ink);
  font-weight: 900;
  text-align: center;
}

.array-lunchbox-stage.is-complete {
  box-shadow: inset 0 0 0 8px #78e6a4;
}

@keyframes lunch-food-pop {
  0% { transform: scale(0.65) rotate(-8deg); }
  65% { transform: scale(1.12) rotate(3deg); }
  100% { transform: scale(1) rotate(0); }
}

@media (max-width: 760px) {
  .lunchbox-index-preview {
    flex-basis: min(100%, 290px);
    margin-inline: auto;
  }

  .array-index-label {
    font-size: 0.58rem;
  }

  .array-lunch-status {
    font-size: 0.78rem;
  }
}
/* === Code Studio 6 Builder: alien team array === */
.cs6-team-hero {
  background: linear-gradient(135deg, #e8f7ff, #e8ddff 52%, #d7ffe7);
}

.cs6-team-explanation {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.cs6-team-explanation > div {
  display: grid;
  gap: 4px;
  padding: 13px 15px;
  border: 4px solid var(--ink);
  border-radius: 18px;
  background: #fff;
}

.cs6-team-explanation b { font-size: 1rem; }
.cs6-team-explanation span { font-weight: 800; }

.cs6-team-builder {
  display: grid;
  grid-template-columns: minmax(420px, 0.92fr) minmax(520px, 1.08fr);
  gap: 18px;
  align-items: start;
}

.cs6-alien-picker {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 9px;
  margin: 12px 0;
}

.cs6-alien-picker button {
  display: grid;
  place-items: center;
  gap: 2px;
  padding: 8px;
  border: 4px solid var(--ink);
  border-radius: 18px;
  background: #f7fbff;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease;
}

.cs6-alien-picker button:hover:not(:disabled) { transform: translateY(-4px); background: #fff8c9; }
.cs6-alien-picker button.is-added { background: #b8f5cf; }
.cs6-alien-picker button:disabled { opacity: 0.72; cursor: default; }
.cs6-alien-picker img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.cs6-alien-picker strong { font-size: 1.05rem; }
.cs6-alien-picker span { font-weight: 900; text-transform: uppercase; font-size: 0.72rem; color: #55627a; }
.cs6-alien-picker code { padding: 4px 7px; border-radius: 8px; background: var(--ink); color: #c7ffda; font-size: 0.72rem; }

.cs6-array-tray {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 66px;
  padding: 10px 12px;
  border: 4px dashed var(--ink);
  border-radius: 16px;
  background: #fff8c9;
  overflow-x: auto;
}

.cs6-array-tray > code { font-weight: 900; white-space: nowrap; }
.cs6-array-values { display: flex; gap: 6px; }
.cs6-array-values > span { position: relative; padding: 8px 9px 6px; border: 3px solid var(--ink); border-radius: 10px; background: #fff; font-family: "Courier New", monospace; font-weight: 900; white-space: nowrap; }
.cs6-array-values > span b { position: absolute; top: -11px; left: 50%; transform: translateX(-50%); padding: 1px 5px; border: 2px solid var(--ink); border-radius: 999px; background: #ffe45c; font-size: 0.65rem; }
.cs6-array-values > .is-empty { border: 0; background: transparent; color: #657188; font-family: inherit; }

.cs6-team-code-editor textarea { min-height: 185px; }

.cs6-team-stage {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  align-items: end;
  min-height: 520px;
  padding: 90px 18px 72px;
  overflow: hidden;
  border: 6px solid var(--ink);
  border-radius: 26px;
  background: linear-gradient(rgb(10 25 55 / 0.12), rgb(10 25 55 / 0.38)), url("./assets/images/alien/alien_lab.png") center/cover no-repeat;
}

.cs6-team-slot {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  align-content: end;
  min-width: 0;
  height: 330px;
  padding: 9px;
  border: 4px solid rgb(255 255 255 / 0.55);
  border-radius: 22px;
  background: rgb(15 23 42 / 0.5);
  color: #fff;
  text-align: center;
  opacity: 0.38;
  filter: grayscale(1);
  transition: opacity 220ms ease, filter 220ms ease, transform 220ms ease, background 220ms ease;
}

.cs6-team-slot.is-added { opacity: 0.72; filter: grayscale(0.55); }
.cs6-team-slot.is-active { opacity: 1; filter: none; transform: translateY(-12px) scale(1.04); background: rgb(36 128 78 / 0.58); box-shadow: 0 0 28px #ffe45c; }
.cs6-team-slot.is-complete { opacity: 1; filter: none; }
.cs6-team-slot img { width: 100%; height: 225px; object-fit: contain; }
.cs6-team-slot strong { font-size: 1.08rem; }
.cs6-team-slot small { font-weight: 900; letter-spacing: 0.04em; }

.cs6-team-index {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 8px;
  border: 3px solid var(--ink);
  border-radius: 999px;
  background: #ffe45c;
  color: var(--ink);
  font-family: "Courier New", monospace;
  font-size: 0.72rem;
  font-weight: 900;
  white-space: nowrap;
}

.cs6-team-status {
  position: absolute;
  z-index: 4;
  left: 50%;
  bottom: 14px;
  transform: translateX(-50%);
  width: max-content;
  max-width: 90%;
  padding: 9px 16px;
  border: 4px solid var(--ink);
  border-radius: 999px;
  background: #ffe45c;
  color: var(--ink);
  font-weight: 900;
  text-align: center;
}

@media (max-width: 980px) {
  .cs6-team-builder { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .cs6-team-explanation, .cs6-alien-picker { grid-template-columns: 1fr; }
  .cs6-alien-picker button { grid-template-columns: 85px 1fr; text-align: left; }
  .cs6-alien-picker img { grid-row: 1 / 4; }
  .cs6-team-stage { min-height: 430px; padding-inline: 8px; }
  .cs6-team-slot { height: 270px; padding-inline: 3px; }
  .cs6-team-slot img { height: 175px; }
  .cs6-team-slot strong { font-size: 0.82rem; }
  .cs6-team-slot small { font-size: 0.62rem; }
  .cs6-team-index { font-size: 0.54rem; }
}