/**
 * Doodles DOM Game Shell — Archetype B
 * Unified CSS foundation for all DOM-based games (body-map, doodle-school).
 * Provides nav, screens, buttons, cards, and shared components.
 *
 * POLICY: Zero box-shadows. Depth via border-color, transform, backdrop-filter.
 *
 * Games override --dom-* variables in their own <style> block for theming.
 */

/* ============================================================
   SHELL VARIABLES (per-game overrides)
   ============================================================ */
:root {
  /* Typography */
  --dom-font: var(--tok-font, "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif);

  /* Layout */
  --dom-nav-height: 60px;

  /* Colors */
  --dom-nav-bg: #1e3a5f; /* overridden per game */
  --dom-nav-color: #ffffff;
  --dom-nav-border: rgba(255, 255, 255, 0.1);

  --dom-bg: #f5f7fa;
  --dom-bg-card: #ffffff;
  --dom-border: #e5e7eb;
  --dom-text: #1f2937;
  --dom-text-muted: #6b7280;

  /* Accent colors */
  --dom-accent: var(--tok-color-primary, #1cb0f6);
  --dom-accent-dark: var(--tok-blue-dark, #0b8fde);
  --dom-accent2: var(--tok-color-secondary, #ff7d00);

  /* Component defaults */
  --dom-btn-radius: var(--tok-radius-lg, 12px);
  --dom-card-radius: var(--tok-radius-xl, 16px);
}

/* ============================================================
   BASE STYLES
   ============================================================ */
html {
  height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--dom-font);
  background: var(--dom-bg);
  color: var(--dom-text);
  overflow-x: hidden;
  height: 100%;
}

* {
  box-sizing: border-box;
}

/* ============================================================
   NAV BAR (.dom-nav)
   ============================================================ */
.dom-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--dom-nav-height);
  display: flex;
  align-items: center;
  gap: var(--tok-space-4, 16px);
  padding: 0 var(--tok-space-4, 16px);

  background: var(--dom-nav-bg);
  color: var(--dom-nav-color);
  border-bottom: 1px solid var(--dom-nav-border);

  /* NO box-shadow */
}

.dom-nav a {
  display: flex;
  align-items: center;
  gap: var(--tok-space-2, 8px);
  min-height: var(--tok-touch-min, 44px);
  padding: 0 var(--tok-space-3, 12px);

  color: var(--dom-nav-color);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;

  border-radius: var(--tok-radius-sm, 4px);
  transition: background var(--tok-transition-fast, 0.15s ease);
}

.dom-nav a:hover {
  background: rgba(255, 255, 255, 0.1);
}

.dom-nav a:active {
  background: rgba(255, 255, 255, 0.15);
}

.dom-nav-title {
  flex: 1;
  text-align: center;
  font-size: 1.125rem;
  font-weight: 700;
}

.dom-nav-meta {
  font-size: 0.875rem;
  opacity: 0.9;
  flex-shrink: 0;
  margin-left: var(--tok-space-2, 8px);
}

/* ============================================================
   SCREENS & LAYOUT (.dom-screen)
   ============================================================ */
.dom-screens-container {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - var(--dom-nav-height));
  position: relative;
}

.dom-screen {
  display: none;
  flex-direction: column;
  width: 100%;
  padding: var(--tok-space-6, 24px) var(--tok-space-4, 16px);
  min-height: 100%;
}

.dom-screen.active {
  display: flex;
}

/* ============================================================
   BUTTONS (.dom-btn)
   ============================================================ */
.dom-btn {
  /* Base button styles */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--tok-space-2, 8px);

  padding: var(--tok-space-3, 12px) var(--tok-space-4, 16px);
  min-height: var(--tok-touch-min, 44px);
  min-width: var(--tok-touch-min, 44px);

  border: 2px solid transparent;
  border-radius: var(--dom-btn-radius);

  font-family: var(--dom-font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;

  transition: all var(--tok-transition-normal, 0.2s ease);

  /* NO box-shadow */
}

.dom-btn:hover:not(:disabled) {
  transform: translateY(-2px);
}

.dom-btn:active:not(:disabled) {
  transform: scale(0.97);
}

.dom-btn:disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* PRIMARY: filled accent color */
.dom-btn--primary {
  background: var(--dom-accent);
  color: #ffffff;
  border-color: var(--dom-accent-dark);
}

.dom-btn--primary:hover:not(:disabled) {
  background: var(--dom-accent-dark);
}

/* SECONDARY: filled accent2 color */
.dom-btn--secondary {
  background: var(--dom-accent2);
  color: #ffffff;
  border-color: rgba(0, 0, 0, 0.2);
}

.dom-btn--secondary:hover:not(:disabled) {
  border-color: rgba(0, 0, 0, 0.4);
}

/* GHOST: transparent with border */
.dom-btn--ghost {
  background: transparent;
  color: var(--dom-accent);
  border-color: var(--dom-accent);
}

.dom-btn--ghost:hover:not(:disabled) {
  background: rgba(var(--dom-accent-rgb, 28, 176, 246), 0.1);
  border-color: var(--dom-accent-dark);
}

/* GOLD: special action color */
.dom-btn--gold {
  background: #f5c518;
  color: #000000;
  border-color: #e6b010;
}

.dom-btn--gold:hover:not(:disabled) {
  background: #e6b010;
}

/* ============================================================
   CARDS (.dom-card)
   ============================================================ */
.dom-card {
  background: var(--dom-bg-card);
  border: 1px solid var(--dom-border);
  border-radius: var(--dom-card-radius);
  padding: var(--tok-space-4, 16px);

  transition: all var(--tok-transition-normal, 0.2s ease);

  /* NO box-shadow */
}

.dom-card--interactive {
  cursor: pointer;
}

.dom-card--interactive:hover {
  border-color: var(--dom-accent);
  transform: translateY(-2px);
}

.dom-card--tinted {
  background: rgba(var(--dom-accent-rgb, 28, 176, 246), 0.05);
}

/* ============================================================
   PROGRESS BAR (.dom-progress)
   ============================================================ */
.dom-progress {
  width: 100%;
  height: 6px;
  background: var(--dom-border);
  border-radius: var(--tok-radius-pill, 999px);
  overflow: hidden;
}

.dom-progress-fill {
  height: 100%;
  background: var(--dom-accent);
  border-radius: var(--tok-radius-pill, 999px);
  transition: width var(--tok-transition-normal, 0.2s ease);
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */

/* Mobile: stacked, full-width layouts */
@media (max-width: 768px) {
  :root {
    --dom-nav-height: 52px;
  }

  .dom-nav {
    padding: 0 var(--tok-space-3, 12px);
    gap: var(--tok-space-2, 8px);
  }

  .dom-nav-title {
    font-size: 1rem;
  }

  .dom-nav-meta {
    font-size: 0.8rem;
  }

  .dom-screen {
    padding: var(--tok-space-4, 16px) var(--tok-space-3, 12px);
    min-height: calc(100vh - var(--dom-nav-height));
  }

  .dom-btn {
    font-size: 0.95rem;
  }

  .dom-card {
    padding: var(--tok-space-3, 12px);
  }
}

/* Tablet: comfortable spacing */
@media (min-width: 769px) and (max-width: 1024px) {
  .dom-screen {
    padding: var(--tok-space-8, 32px) var(--tok-space-6, 24px);
  }
}

/* Desktop: ensure nav is always clickable and visible */
@media (min-width: 1025px) {
  .dom-nav {
    /* Ensure nav stays sticky and on top */
    position: sticky;
    top: 0;
    z-index: 1000;
  }

  .dom-screens-container {
    /* Ensure screens don't extend above nav */
    position: relative;
    z-index: 1;
    /* Allow screens to scroll if content exceeds viewport */
    overflow-y: auto;
  }

  .dom-screen {
    /* Moderate padding on large screens - don't push content off-screen */
    padding: var(--tok-space-6, 24px) var(--tok-space-6, 24px);
    /* Allow content to scroll */
    min-height: auto;
  }
}

/* ============================================================
   QUIZ GAME COMPONENTS (.screen, .start-card, .game-card, etc.)
   Used by all DOM-based quiz games. Text inherits --dom-text.
   ============================================================ */

/* Screen visibility — alias for .dom-screen without dom- prefix */
.screen {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: calc(100vh - var(--dom-nav-height, 60px));
  padding: 20px 16px 32px;
  box-sizing: border-box;
}
.screen.active {
  display: flex;
}

/* ── START CARD ── */
.start-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  width: 100%;
  max-width: 460px;
  padding: 32px 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1.5px solid var(--dom-border, rgba(255, 255, 255, 0.12));
  border-radius: 20px;
}
.start-emoji {
  font-size: 3.5rem;
  line-height: 1;
}
.start-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--dom-text, #fff);
  margin: 0;
  line-height: 1.2;
}
.start-desc {
  font-size: 1rem;
  color: var(--dom-text-muted, rgba(255, 255, 255, 0.7));
  line-height: 1.6;
  margin: 0;
  max-width: 360px;
}

/* ── GAME CARD ── */
.game-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 560px;
  gap: 14px;
}

/* ── HUD ── */
.game-hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--dom-text-muted, rgba(255, 255, 255, 0.65));
  padding: 0 2px;
}

/* ── QUESTION ── */
.q-emoji {
  font-size: 2.75rem;
  line-height: 1;
  text-align: center;
}
.q-text {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dom-text, #fff);
  text-align: center;
  line-height: 1.5;
  max-width: 500px;
  margin: 0;
}

/* ── CHOICES GRID ── */
.choices-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 100%;
}
.choice-btn {
  padding: 13px 12px;
  min-height: 52px;
  border: 2px solid var(--dom-border, rgba(255, 255, 255, 0.15));
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--dom-text, #fff);
  font-size: 0.9rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  text-align: center;
  line-height: 1.4;
  transition:
    border-color 0.15s,
    transform 0.12s,
    background 0.15s;
}
.choice-btn:hover:not(:disabled) {
  border-color: var(--dom-accent, #38bdf8);
  transform: translateY(-2px);
}
.choice-btn:disabled {
  cursor: default;
}

/* Answer states */
.choice-btn.correct-choice {
  border-color: #22c55e;
  background: rgba(34, 197, 94, 0.18);
  color: #bbf7d0;
}
.choice-btn.wrong-choice {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.15);
  color: #fecaca;
}

/* ── FEEDBACK ── */
.feedback {
  font-size: 1rem;
  font-weight: 800;
  text-align: center;
  min-height: 1.4em;
  color: var(--dom-text-muted, rgba(255, 255, 255, 0.6));
}
.feedback.good {
  color: #4ade80;
}
.feedback.bad {
  color: #f87171;
}

/* ── FACT BOX ── */
.fact-box {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1.5px solid var(--dom-border, rgba(255, 255, 255, 0.15));
  border-left: 3px solid var(--dom-accent, #38bdf8);
  border-radius: 12px;
  font-size: 0.9rem;
  color: var(--dom-text-muted, rgba(255, 255, 255, 0.75));
  line-height: 1.55;
  text-align: left;
}

/* ── RESULT CARD ── */
.result-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 14px;
  width: 100%;
  max-width: 400px;
  padding: 36px 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1.5px solid var(--dom-border, rgba(255, 255, 255, 0.12));
  border-radius: 20px;
}
.result-emoji {
  font-size: 4rem;
  line-height: 1;
}
.result-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dom-text, #fff);
  margin: 0;
}
.result-score {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dom-accent, #38bdf8);
}
.result-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 6px;
}

/* ── QUIZ MOBILE ── */
@media (max-width: 480px) {
  .start-card,
  .result-card {
    padding: 24px 16px;
  }
  .start-title {
    font-size: 1.5rem;
  }
  .start-emoji,
  .result-emoji {
    font-size: 3rem;
  }
  .q-text {
    font-size: 1rem;
  }
  .choices-grid {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .choice-btn {
    min-height: 48px;
    font-size: 0.875rem;
  }
  .q-emoji {
    font-size: 2.2rem;
  }
}

/* Reduced motion: disable all animations */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}