/* ==========================================================================
   The Teacher Vault -- AI Code Crew visual identity (ages 9-11, Years 5-6).
   A distinct, high-energy sub-brand: dark navy "code at night" background
   with electric cyan / purple / orange / lime / yellow accents, reusing the
   existing orange mascot PNGs (never redrawn) composed with CSS/SVG props.
   Loaded IN ADDITION TO the shared styles.css, scoped to .aie-root so it
   never leaks into the rest of the site.
   ========================================================================== */

.aie-root {
  --aie-bg: #0b1024;
  --aie-bg-soft: #121a3a;
  --aie-panel: #161f45;
  --aie-panel-light: #1d2a5c;
  --aie-border: rgba(255,255,255,0.12);
  --aie-cyan: #3ee7f2;
  --aie-cyan-dark: #1fb8c4;
  --aie-purple: #9a6bff;
  --aie-purple-dark: #7143e0;
  --aie-orange: #ff8a3d;
  --aie-orange-dark: #e8742a;
  --aie-lime: #b6f23d;
  --aie-yellow: #ffd23d;
  --aie-red: #ff5f6d;
  --aie-ink: #f2f4ff;
  --aie-ink-dim: #aab2e0;
  --aie-radius: 22px;
  --aie-radius-sm: 14px;
  --aie-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--aie-bg);
  color: var(--aie-ink);
  font-family: var(--aie-font);
}

.aie-icon-box { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; }
.aie-icon-box svg { width: 100%; height: 100%; display: block; }

.aie-root a { color: inherit; }
.aie-root h1, .aie-root h2, .aie-root h3, .aie-root h4 { font-family: var(--font-chalk); font-weight: 400; letter-spacing: normal; }
.aie-root p { line-height: 1.5; }
.aie-root button { font-family: inherit; color: inherit; }
.aie-root [hidden] { display: none !important; }

.aie-root *:focus-visible {
  outline: 3px solid var(--aie-yellow);
  outline-offset: 2px;
}

/* ---------------- Starfield / dot backdrop ---------------- */
.aie-section {
  padding: 44px 0;
  position: relative;
}
.aie-section--dots {
  background-image: radial-gradient(rgba(255,255,255,0.09) 1.5px, transparent 1.5px);
  background-size: 26px 26px;
}
.aie-section--soft { background: var(--aie-bg-soft); }

.aie-container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.aie-container--wide { max-width: 1280px; }

/* ---------------- Breadcrumb ---------------- */
.aie-breadcrumb { font-size: 0.85rem; color: var(--aie-ink-dim); margin-bottom: 14px; }
.aie-breadcrumb a { color: var(--aie-cyan); text-decoration: underline; font-weight: 700; }

/* ---------------- Eyebrow / tag ---------------- */
.aie-tag {
  display: inline-block;
  background: var(--aie-purple);
  color: #fff;
  font-weight: 800;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
}

/* ---------------- Hero ---------------- */
.aie-hero { text-align: center; }
.aie-hero h1 {
  font-size: clamp(2.1rem, 6vw, 3.4rem);
  text-transform: uppercase;
  margin: 0 0 10px;
  background: linear-gradient(90deg, var(--aie-cyan), var(--aie-lime));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.aie-hero__tagline {
  font-size: clamp(1rem, 2.4vw, 1.3rem);
  font-weight: 800;
  color: var(--aie-yellow);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.aie-hero__sub { font-size: 1.05rem; color: var(--aie-ink-dim); max-width: 46ch; margin: 0 auto 6px; }
.aie-hero__target {
  display: inline-flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; justify-content: center;
}
.aie-hero__target span {
  background: var(--aie-panel); border: 1px solid var(--aie-border); border-radius: 999px;
  padding: 6px 14px; font-size: 0.82rem; font-weight: 700; color: var(--aie-ink-dim);
}

/* ---------------- Section headings ---------------- */
.aie-h2 { font-size: clamp(1.4rem, 3.4vw, 1.9rem); text-transform: uppercase; margin-bottom: 6px; }
.aie-h2--cyan { color: var(--aie-cyan); }
.aie-h2--purple { color: var(--aie-purple); }
.aie-h2--orange { color: var(--aie-orange); }
.aie-h2--lime { color: var(--aie-lime); }
.aie-lede { color: var(--aie-ink-dim); max-width: 60ch; }
.aie-section-head { margin-bottom: 22px; }
.aie-section-head.aie-center { text-align: center; }
.aie-section-head.aie-center .aie-lede { margin: 0 auto; }

/* ---------------- Buttons ---------------- */
.aie-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 800; font-size: 1rem; border-radius: 999px; border: none;
  padding: 14px 26px; cursor: pointer; min-height: 48px; min-width: 48px;
  transition: transform 0.1s ease, box-shadow 0.15s ease;
  text-decoration: none;
}
.aie-btn:active { transform: scale(0.97); }
.aie-btn--primary { background: linear-gradient(135deg, var(--aie-cyan), var(--aie-purple)); color: #071022; box-shadow: 0 8px 22px rgba(62,231,242,0.28); }
.aie-btn--primary:hover { box-shadow: 0 10px 28px rgba(62,231,242,0.4); }
.aie-btn--ghost { background: transparent; color: var(--aie-ink); border: 2px solid var(--aie-border); }
.aie-btn--ghost:hover { border-color: var(--aie-cyan); color: var(--aie-cyan); }
.aie-btn--lg { padding: 18px 32px; font-size: 1.1rem; }
.aie-btn--sm { padding: 9px 16px; font-size: 0.85rem; min-height: 38px; }
.aie-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.aie-btn-row { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 8px; }

/* ---------------- Cards ---------------- */
.aie-card {
  background: var(--aie-panel);
  border: 1px solid var(--aie-border);
  border-radius: var(--aie-radius);
  padding: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}
.aie-card--top { border-top: 5px solid var(--aie-cyan); }
.aie-card--cyan { border-top: 5px solid var(--aie-cyan); }
.aie-card--purple { border-top: 5px solid var(--aie-purple); }
.aie-card--orange { border-top: 5px solid var(--aie-orange); }
.aie-card--lime { border-top: 5px solid var(--aie-lime); }
.aie-card--yellow { border-top: 5px solid var(--aie-yellow); }

/* ---------------- Resource card grid (hub) ---------------- */
.aie-resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}
.aie-resource-card {
  background: var(--aie-panel);
  border: 1px solid var(--aie-border);
  border-radius: var(--aie-radius);
  padding: 22px;
  display: flex; flex-direction: column; gap: 12px;
  text-decoration: none; color: var(--aie-ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  position: relative;
  overflow: hidden;
}
.aie-resource-card:hover, .aie-resource-card:focus-visible {
  transform: translateY(-4px);
  box-shadow: 0 16px 34px rgba(0,0,0,0.45);
}
.aie-resource-card__num {
  position: absolute; top: 14px; right: 16px; font-size: 0.75rem; font-weight: 800;
  color: var(--aie-ink-dim); letter-spacing: 0.04em;
}
.aie-resource-card__icon {
  width: 56px; height: 56px; border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  color: #071022;
}
.aie-resource-card__icon svg { width: 32px; height: 32px; }
.aie-resource-card--cyan .aie-resource-card__icon { background: linear-gradient(135deg, var(--aie-cyan), var(--aie-cyan-dark)); }
.aie-resource-card--purple .aie-resource-card__icon { background: linear-gradient(135deg, var(--aie-purple), var(--aie-purple-dark)); }
.aie-resource-card--orange .aie-resource-card__icon { background: linear-gradient(135deg, var(--aie-orange), var(--aie-orange-dark)); }
.aie-resource-card--lime .aie-resource-card__icon { background: linear-gradient(135deg, var(--aie-lime), #7fbf2a); }
.aie-resource-card--yellow .aie-resource-card__icon { background: linear-gradient(135deg, var(--aie-yellow), #e0a800); }
.aie-resource-card h3 { font-size: 1.15rem; text-transform: uppercase; margin: 0; }
.aie-resource-card p { color: var(--aie-ink-dim); font-size: 0.92rem; margin: 0; flex: 1; }
.aie-resource-card__cta {
  align-self: flex-start; font-weight: 800; font-size: 0.85rem; text-transform: uppercase;
  padding: 8px 16px; border-radius: 999px; background: rgba(255,255,255,0.08);
}
.aie-resource-card--cyan .aie-resource-card__cta { color: var(--aie-cyan); }
.aie-resource-card--purple .aie-resource-card__cta { color: var(--aie-purple); }
.aie-resource-card--orange .aie-resource-card__cta { color: var(--aie-orange); }
.aie-resource-card--lime .aie-resource-card__cta { color: var(--aie-lime); }
.aie-resource-card--yellow .aie-resource-card__cta { color: var(--aie-yellow); }
.aie-resource-card__meta {
  display: inline-flex; align-items: center; gap: 5px; font-size: 0.78rem; font-weight: 700;
  color: var(--aie-ink-dim); margin-top: -4px;
}
.aie-resource-card__meta svg { width: 15px; height: 15px; flex-shrink: 0; }
.aie-resource-card__done {
  position: absolute; top: 14px; left: 16px; background: var(--aie-lime); color: #0b1024;
  font-size: 0.68rem; font-weight: 900; text-transform: uppercase; padding: 3px 10px; border-radius: 999px;
}

/* ---------------- Skill badges (ASK / CHECK / CREATE / UNDERSTAND / PROTECT) ---------------- */
.aie-skills-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px;
}
.aie-skill {
  text-align: center; padding: 18px 12px; border-radius: var(--aie-radius-sm);
  background: var(--aie-panel); border: 1px solid var(--aie-border);
}
.aie-skill__icon {
  width: 54px; height: 54px; border-radius: 50%; margin: 0 auto 10px;
  display: flex; align-items: center; justify-content: center; color: #071022;
}
.aie-skill__icon svg { width: 28px; height: 28px; }
.aie-skill h4 { margin: 0 0 4px; font-size: 1rem; text-transform: uppercase; }
.aie-skill p { margin: 0; font-size: 0.85rem; color: var(--aie-ink-dim); }
.aie-skill--ask .aie-skill__icon { background: var(--aie-cyan); }
.aie-skill--check .aie-skill__icon { background: var(--aie-orange); }
.aie-skill--create .aie-skill__icon { background: var(--aie-lime); }
.aie-skill--understand .aie-skill__icon { background: var(--aie-purple); }
.aie-skill--protect .aie-skill__icon { background: var(--aie-yellow); }

/* ---------------- Progress path ---------------- */
.aie-path { display: flex; align-items: flex-start; gap: 4px; overflow-x: auto; padding: 10px 4px 18px; scrollbar-width: thin; }
.aie-path__node { display: flex; flex-direction: column; align-items: center; min-width: 92px; flex-shrink: 0; position: relative; }
.aie-path__dot {
  width: 40px; height: 40px; border-radius: 50%; background: var(--aie-panel-light);
  border: 3px solid var(--aie-border); display: flex; align-items: center; justify-content: center;
  font-weight: 900; color: var(--aie-ink-dim); margin-bottom: 8px; font-size: 0.85rem;
}
.aie-path__node.is-done .aie-path__dot { background: var(--aie-lime); border-color: var(--aie-lime); color: #0b1024; }
.aie-path__node.is-current .aie-path__dot { border-color: var(--aie-cyan); color: var(--aie-cyan); box-shadow: 0 0 0 4px rgba(62,231,242,0.18); }
.aie-path__label { font-size: 0.72rem; text-align: center; color: var(--aie-ink-dim); font-weight: 700; text-transform: uppercase; line-height: 1.2; }
.aie-path__node.is-done .aie-path__label { color: var(--aie-lime); }
.aie-path__line { flex: 1; height: 3px; background: var(--aie-border); margin-top: 19px; min-width: 20px; }
.aie-path__line.is-done { background: var(--aie-lime); }

/* ---------------- Mascot scenes ---------------- */
.aie-scene { position: relative; display: inline-flex; align-items: flex-end; justify-content: center; }
.aie-scene img.aie-mascot { display: block; position: relative; z-index: 2; }
.aie-scene__prop { position: absolute; z-index: 3; }
.aie-scene__prop svg { width: 100%; height: 100%; display: block; }

/* ---------------- Diagram stages (flow diagram) ---------------- */
.aie-flow { display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; }
.aie-flow__stage {
  background: var(--aie-panel); border: 2px solid var(--aie-border); border-radius: var(--aie-radius-sm);
  padding: 16px; text-align: center; width: 150px; cursor: pointer; color: var(--aie-ink);
}
.aie-flow__stage:hover, .aie-flow__stage:focus-visible { border-color: var(--aie-cyan); }
.aie-flow__stage.is-open { border-color: var(--aie-cyan); background: var(--aie-panel-light); }
.aie-flow__stage svg { width: 46px; height: 46px; margin: 0 auto 8px; }
.aie-flow__stage strong { display: block; font-size: 0.82rem; text-transform: uppercase; }
.aie-flow__arrow { color: var(--aie-ink-dim); width: 26px; height: 26px; flex-shrink: 0; display: inline-flex; }
.aie-flow__arrow svg { width: 100%; height: 100%; }
.aie-flow__explain {
  flex-basis: 100%; text-align: center; background: var(--aie-bg-soft); border-radius: var(--aie-radius-sm);
  padding: 14px 18px; margin-top: 6px; color: var(--aie-ink); font-weight: 600;
}

/* ---------------- Option buttons (shared across quiz-style activities) ---------------- */
.aie-optbtn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  background: var(--aie-panel-light); border: 2px solid var(--aie-border); color: var(--aie-ink);
  border-radius: 999px; padding: 11px 18px; font-weight: 800; font-size: 0.92rem; cursor: pointer;
  min-height: 44px; font-family: inherit;
}
.aie-optbtn:hover:not(:disabled) { border-color: var(--aie-cyan); }
.aie-optbtn:disabled { cursor: default; }
.aie-optbtn.is-picked { border-color: var(--aie-cyan); }
.aie-optbtn.is-correct { border-color: var(--aie-lime); background: rgba(182,242,61,0.16); color: var(--aie-lime); }
.aie-optbtn.is-wrong { border-color: var(--aie-red); background: rgba(255,95,109,0.16); color: #ff9aa2; }
.aie-optbtn.is-dim { opacity: 0.5; }

/* ---------------- Quiz-style card (icon + prompt + option row + result) ---------------- */
.aie-quizcard { text-align: center; }
.aie-quizcard__icon {
  width: 64px; height: 64px; border-radius: 18px; margin: 0 auto 12px;
  background: var(--aie-panel-light); display: flex; align-items: center; justify-content: center; color: var(--aie-cyan);
}
.aie-quizcard__icon svg { width: 36px; height: 36px; }
.aie-quizcard h4 { margin: 0 0 12px; font-size: 1.05rem; text-transform: none; }
.aie-quizcard .aie-btn-row { margin-top: 0; }
.aie-quizcard__result { margin-top: 12px; text-align: left; }
.aie-quizcard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; }

/* ---------------- Sort / choice cards ---------------- */
.aie-choice-card {
  background: var(--aie-panel); border: 2px solid var(--aie-border); border-radius: var(--aie-radius-sm);
  padding: 18px; text-align: center; cursor: pointer; font-weight: 700;
}
.aie-choice-card:hover, .aie-choice-card:focus-visible { border-color: var(--aie-cyan); }
.aie-choice-card svg { width: 40px; height: 40px; margin: 0 auto 8px; }

/* ---------------- Feedback states (never colour-only: icon + text) ---------------- */
.aie-feedback { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-radius: var(--aie-radius-sm); font-weight: 700; margin-top: 14px; }
.aie-feedback svg { width: 22px; height: 22px; flex-shrink: 0; }
.aie-feedback--good { background: rgba(182,242,61,0.14); border: 1px solid var(--aie-lime); color: var(--aie-lime); }
.aie-feedback--bad { background: rgba(255,95,109,0.14); border: 1px solid var(--aie-red); color: #ff9aa2; }
.aie-feedback--warn { background: rgba(255,210,61,0.14); border: 1px solid var(--aie-yellow); color: var(--aie-yellow); }
.aie-feedback p { margin: 0; color: var(--aie-ink); font-weight: 500; font-size: 0.92rem; }

/* ---------------- Safety cards ---------------- */
.aie-safety-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.aie-safety-card { border-radius: var(--aie-radius-sm); padding: 16px; display: flex; align-items: center; gap: 12px; font-weight: 700; }
.aie-safety-card svg { width: 30px; height: 30px; flex-shrink: 0; }
.aie-safety-card--safe { background: rgba(182,242,61,0.12); border: 2px solid var(--aie-lime); color: var(--aie-lime); }
.aie-safety-card--private { background: rgba(255,95,109,0.12); border: 2px solid var(--aie-red); color: #ff9aa2; }
.aie-safety-card__tag { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; display: block; margin-bottom: 3px; }
.aie-safety-card__text { color: var(--aie-ink); font-weight: 600; font-size: 0.92rem; }

/* ---------------- Badge reveal ---------------- */
.aie-badge-reveal { text-align: center; }
.aie-badge-reveal__medal {
  width: 130px; height: 130px; border-radius: 50%; margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--aie-yellow), var(--aie-orange));
  display: flex; align-items: center; justify-content: center; box-shadow: 0 0 0 8px rgba(255,210,61,0.16);
}
.aie-badge-reveal__medal svg { width: 68px; height: 68px; color: #071022; }
.aie-badge-reveal h2 { font-size: 1.6rem; color: var(--aie-yellow); text-transform: uppercase; }
@keyframes aiePop { from { transform: scale(0.4); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.aie-badge-reveal__medal { animation: aiePop 0.4s ease; }
@media (prefers-reduced-motion: reduce) { .aie-badge-reveal__medal { animation: none; } }

/* ---------------- For grown-ups (collapsible) ---------------- */
.aie-grownups { background: var(--aie-bg-soft); border: 1px solid var(--aie-border); border-radius: var(--aie-radius-sm); padding: 4px 20px; margin-top: 10px; }
.aie-grownups summary { cursor: pointer; font-weight: 800; padding: 14px 0; color: var(--aie-ink); text-transform: uppercase; font-size: 0.9rem; letter-spacing: 0.03em; }
.aie-grownups[open] summary { border-bottom: 1px solid var(--aie-border); }
.aie-grownups__body { padding: 14px 0 18px; color: var(--aie-ink-dim); font-size: 0.92rem; }
.aie-grownups__body dt { font-weight: 800; color: var(--aie-ink); margin-top: 10px; }
.aie-grownups__body dd { margin: 2px 0 0; }
.aie-grownups__facts { list-style: none; margin: 0 0 18px; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.aie-grownups__facts li { display: flex; align-items: flex-start; gap: 10px; }
.aie-grownups__facts svg { width: 16px; height: 16px; flex-shrink: 0; margin-top: 2px; color: var(--aie-lime); }
.aie-grownups__facts--curriculum svg { color: var(--aie-cyan); }
.aie-grownups__curriculum-intro { font-weight: 700; color: var(--aie-ink); margin: 4px 0 10px; }

/* ---------------- Progress bar (in-game) ---------------- */
.aie-progressbar { height: 10px; border-radius: 999px; background: var(--aie-panel-light); overflow: hidden; margin-bottom: 18px; }
.aie-progressbar__fill { height: 100%; background: linear-gradient(90deg, var(--aie-cyan), var(--aie-lime)); border-radius: 999px; transition: width 0.3s ease; }
.aie-stat-row { display: flex; justify-content: center; gap: 26px; flex-wrap: wrap; margin-bottom: 16px; text-align: center; }
.aie-stat__num { display: block; font-size: 1.5rem; font-weight: 900; }
.aie-stat__label { font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--aie-ink-dim); }

/* ---------------- Prompt blocks (Prompt Builder) ---------------- */
.aie-block-group { margin-bottom: 18px; }
.aie-block-group__label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; font-weight: 900; margin-bottom: 8px; }
.aie-block-options { display: flex; flex-wrap: wrap; gap: 8px; }
.aie-block-chip {
  padding: 10px 15px; border-radius: 10px; border: 2px solid var(--aie-border);
  background: var(--aie-panel-light); color: var(--aie-ink); font-weight: 700; font-size: 0.85rem;
  cursor: pointer; font-family: inherit; min-height: 40px;
}
@keyframes aieSnap { from { transform: scale(0.7); opacity: 0; } to { transform: scale(1); opacity: 1; } }
.aie-block-chip.is-selected { animation: aieSnap 0.22s ease; box-shadow: 0 0 0 2px currentColor inset; }
.aie-block-options--task .aie-block-chip.is-selected { border-color: var(--aie-cyan); color: var(--aie-cyan); background: rgba(62,231,242,0.14); }
.aie-block-options--topic .aie-block-chip.is-selected { border-color: var(--aie-purple); color: var(--aie-purple); background: rgba(154,107,255,0.14); }
.aie-block-options--audience .aie-block-chip.is-selected { border-color: var(--aie-orange); color: var(--aie-orange); background: rgba(255,138,61,0.14); }
.aie-block-options--format .aie-block-chip.is-selected { border-color: var(--aie-lime); color: var(--aie-lime); background: rgba(182,242,61,0.14); }
.aie-block-options--detail .aie-block-chip.is-selected { border-color: var(--aie-yellow); color: var(--aie-yellow); background: rgba(255,210,61,0.14); }

.aie-assembled {
  background: var(--aie-bg-soft); border: 2px dashed var(--aie-border); border-radius: var(--aie-radius-sm);
  padding: 18px; min-height: 30px; font-weight: 700; font-size: 1.05rem; text-align: center;
}
.aie-assembled .aie-part-task { color: var(--aie-cyan); }
.aie-assembled .aie-part-topic { color: var(--aie-purple); }
.aie-assembled .aie-part-audience { color: var(--aie-orange); }
.aie-assembled .aie-part-format { color: var(--aie-lime); }
.aie-assembled .aie-part-detail { color: var(--aie-yellow); }
.aie-assembled .aie-placeholder { color: var(--aie-ink-dim); font-weight: 500; }
.aie-assembled.aie-weak { color: var(--aie-ink-dim); font-weight: 500; font-style: italic; }

.aie-warning-card {
  background: rgba(255,210,61,0.1); border: 2px solid var(--aie-yellow); border-radius: var(--aie-radius-sm);
  padding: 20px; text-align: center;
}
.aie-warning-card__eq { font-size: 1.4rem; font-weight: 900; color: var(--aie-yellow); margin: 6px 0; }
.aie-warning-card strong { display: block; font-size: 1.1rem; text-transform: uppercase; color: var(--aie-yellow); }

/* ---------------- AI Detective: speech bubble + verdict stamp ---------------- */
.aie-speechbubble {
  background: var(--aie-panel-light); border: 2px solid var(--aie-border); border-radius: var(--aie-radius-sm);
  padding: 20px; position: relative; font-weight: 700; font-size: 1.1rem; margin-bottom: 26px;
}
.aie-speechbubble::after {
  content: ""; position: absolute; bottom: -14px; left: 36px;
  border-width: 14px 14px 0; border-style: solid; border-color: var(--aie-panel-light) transparent transparent;
}
.aie-stamp {
  display: inline-flex; align-items: center; gap: 10px; padding: 10px 22px; border: 4px solid;
  border-radius: 10px; font-weight: 900; text-transform: uppercase; font-size: 1.05rem; transform: rotate(-3deg);
}
.aie-stamp svg { width: 24px; height: 24px; }
.aie-stamp--right { border-color: var(--aie-lime); color: var(--aie-lime); }
.aie-stamp--check { border-color: var(--aie-yellow); color: var(--aie-yellow); }
.aie-stamp--wrong { border-color: var(--aie-red); color: #ff9aa2; }

/* ---------------- Train The Robot ---------------- */
.aie-robot-grid { display: inline-grid; gap: 3px; background: var(--aie-border); padding: 3px; border-radius: 12px; }
.aie-robot-cell { width: 44px; height: 44px; background: var(--aie-bg-soft); display: flex; align-items: center; justify-content: center; position: relative; border-radius: 4px; }
.aie-robot-cell.is-wall { background: #3a2f52; }
.aie-robot-cell.is-goal::after { content: ""; position: absolute; width: 18px; height: 18px; background: var(--aie-lime); clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%); }
.aie-robot-icon-wrap { width: 30px; height: 30px; transition: transform 0.3s ease, left 0.3s ease, top 0.3s ease; color: var(--aie-cyan); z-index: 2; }
.aie-robot-icon-wrap.is-crashed { color: var(--aie-red); }
@media (prefers-reduced-motion: reduce) { .aie-robot-icon-wrap { transition: none; } }

/* ---------------- Mission-complete flash (Train The Robot) ---------------- */
.aie-robot-success {
  position: absolute; inset: 0; z-index: 5; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  background: rgba(182, 242, 61, 0.3);
  animation: aieFlashIn 0.6s ease;
}
.aie-robot-success__icon {
  width: 64px; height: 64px; border-radius: 50%; color: #0b1024;
  background: var(--aie-lime); box-shadow: 0 0 0 10px rgba(182, 242, 61, 0.3);
  display: flex; align-items: center; justify-content: center;
  animation: aiePop 0.4s ease;
}
.aie-robot-success__icon svg { width: 36px; height: 36px; }
@keyframes aieFlashIn { 0% { opacity: 0; } 25% { opacity: 1; } 100% { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .aie-robot-success, .aie-robot-success__icon { animation: none; } }

.aie-cmd-tray { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 14px; }
.aie-cmd-btn {
  padding: 12px 16px; border-radius: 10px; border: 2px solid var(--aie-border); background: var(--aie-panel-light);
  color: var(--aie-ink); font-weight: 800; cursor: pointer; min-height: 44px; font-family: inherit; font-size: 0.88rem;
}
.aie-cmd-btn:hover { border-color: var(--aie-cyan); }
.aie-cmd-btn:disabled { opacity: 0.4; cursor: not-allowed; }

.aie-program-track {
  display: flex; flex-wrap: wrap; gap: 6px; align-items: center; min-height: 54px; padding: 10px;
  background: var(--aie-bg-soft); border: 2px dashed var(--aie-border); border-radius: 10px; margin-bottom: 14px;
}
.aie-program-chip {
  padding: 8px 12px; border-radius: 8px; background: var(--aie-panel-light); border: 2px solid var(--aie-border);
  font-weight: 700; font-size: 0.8rem; cursor: pointer; color: var(--aie-ink);
}
.aie-program-chip.is-active { border-color: var(--aie-yellow); background: rgba(255,210,61,0.18); }
.aie-program-chip.is-repeat { border-color: var(--aie-purple); color: var(--aie-purple); }
.aie-program-chip.is-cond { border-color: var(--aie-orange); color: var(--aie-orange); }
.aie-program-chip .rm { margin-left: 8px; color: var(--aie-red); font-weight: 900; }
.aie-program-empty { color: var(--aie-ink-dim); font-size: 0.88rem; font-style: italic; }

.aie-level-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.aie-level-btn {
  aspect-ratio: 1; border-radius: 10px; border: 2px solid var(--aie-border); background: var(--aie-panel-light);
  color: var(--aie-ink); font-weight: 800; cursor: pointer; display: flex; align-items: center; justify-content: center;
  font-size: 0.95rem; font-family: inherit; min-height: 44px;
}
.aie-level-btn.is-done { background: rgba(182,242,61,0.18); border-color: var(--aie-lime); color: var(--aie-lime); }
.aie-level-btn:hover { border-color: var(--aie-cyan); }
.aie-concept-card { background: rgba(154,107,255,0.12); border: 2px solid var(--aie-purple); border-radius: var(--aie-radius-sm); padding: 16px; text-align: center; margin-bottom: 16px; }
.aie-concept-card strong { display: block; color: var(--aie-purple); text-transform: uppercase; font-size: 0.85rem; margin-bottom: 6px; }

/* ---------------- Build Your First Web Page ---------------- */
.aie-code-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 800px) { .aie-code-layout { grid-template-columns: 1fr; } }
.aie-code-panel, .aie-preview-panel {
  background: var(--aie-panel); border: 1px solid var(--aie-border); border-radius: var(--aie-radius-sm); overflow: hidden;
}
.aie-panel-label {
  padding: 10px 14px; font-size: 0.72rem; font-weight: 900; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--aie-ink-dim); border-bottom: 1px solid var(--aie-border); background: var(--aie-bg-soft);
}
.aie-code-textarea {
  width: 100%; min-height: 260px; background: #0d1330; color: #d6e8ff; border: none; padding: 14px;
  font-family: "Consolas", "Menlo", monospace; font-size: 0.88rem; line-height: 1.6; resize: vertical; display: block;
}
.aie-code-textarea:focus-visible { outline: 3px solid var(--aie-yellow); outline-offset: -3px; }
.aie-preview-frame { width: 100%; height: 260px; border: none; background: #fff; display: block; }
.aie-swatch-row { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin: 10px 0; }
.aie-swatch {
  width: 40px; height: 40px; border-radius: 50%; border: 3px solid var(--aie-border); cursor: pointer; padding: 0;
}
.aie-swatch:hover, .aie-swatch:focus-visible { border-color: #fff; }
.aie-theme-card {
  background: var(--aie-panel-light); border: 2px solid var(--aie-border); border-radius: var(--aie-radius-sm);
  padding: 14px; text-align: center; cursor: pointer; font-weight: 800; color: var(--aie-ink);
}
.aie-theme-card:hover, .aie-theme-card.is-selected { border-color: var(--aie-cyan); color: var(--aie-cyan); }

/* ---------------- Related links ---------------- */
.aie-related-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.aie-related-links a {
  display: inline-block; padding: 9px 16px; border-radius: 999px; text-decoration: none;
  background: var(--aie-panel); color: var(--aie-cyan); font-size: 0.88rem; font-weight: 700; border: 1px solid var(--aie-border);
}
.aie-related-links a:hover { border-color: var(--aie-cyan); }

/* ---------------- Reset progress link ---------------- */
.aie-reset { background: none; border: none; color: var(--aie-ink-dim); text-decoration: underline; cursor: pointer; font-size: 0.82rem; font-family: inherit; padding: 6px; }
.aie-reset:hover { color: var(--aie-red); }

@media (max-width: 640px) {
  .aie-card, .aie-resource-card { padding: 18px; }
  .aie-flow__stage { width: 120px; padding: 12px; }
  .aie-btn--lg { padding: 15px 24px; font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .aie-root * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}