/* Global Design System & Variables */
:root {
  /* Craft Spec Palette: Warm, Children's-book-adjacent but grown-up flat vector palette */
  --palette-peach-light: #FDF4ED;
  --palette-peach: #F6D6C4;
  --palette-peach-dark: #E4BAA3;
  --palette-brown-dark: #382418;
  --palette-brown-med: #5E3D2A;
  --palette-brown-light: #8D6B53;
  --palette-sage: #6B8E6D;
  --palette-sage-light: #E0ECE1;
  --palette-teal: #366B77;
  --palette-teal-dark: #244952;
  --palette-teal-hover: #2B5762;
  --palette-cream: #FAF6F0;
  --palette-warm-white: #FFFFFF;
  --palette-text-dark: #27211E;
  --palette-text-muted: #6E635C;
  --palette-shadow: rgba(56, 36, 24, 0.08);

  /* ----------------------------------------------------------------
     SEMANTIC TOKENS — see docs/design-language.md
     The screens were carrying a second, unnamed palette (a cool slate
     "clinical HUD" family and a warm ember "Tay / urgency" family), both
     hardcoded. Named here so every screen draws from one source.
     The --palette-* names above are referenced by game logic: EXTEND, NEVER RENAME.
     ---------------------------------------------------------------- */

  /* Dark surfaces */
  --surface-hud: rgba(39, 33, 30, 0.88);
  --surface-hud-btn: rgba(39, 33, 30, 0.85);
  --surface-hud-btn-hover: rgba(39, 33, 30, 1);
  --surface-tooltip: rgba(39, 33, 30, 0.92);
  --surface-clock: rgba(30, 41, 59, 0.92);
  --surface-card-dark: #0F172A;
  --surface-card-darkest: #020617;
  --surface-chip-dark: rgba(15, 23, 42, 0.88);
  --surface-stamp: rgba(15, 23, 42, 0.94);
  --surface-scrim: rgba(15, 23, 42, 0.78);
  --surface-glass-light: rgba(255, 255, 255, 0.94);

  /* Hairlines on dark surfaces */
  --hairline-light: rgba(255, 255, 255, 0.25);
  --hairline-light-strong: rgba(255, 255, 255, 0.6);
  --hairline-light-soft: rgba(255, 255, 255, 0.15);
  --hairline-light-faint: rgba(255, 255, 255, 0.08);

  /* Text on dark */
  --text-inverse: #FFFFFF;
  --text-on-dark: #F8FAFC;
  --text-on-dark-muted: #E2E8F0;
  --text-on-dark-dim: #94A3B8;

  /* Ember / heat — Tay's voice and every primary action */
  --color-heat: #C2410C;         /* AA-safe ground for white text (5.18) */
  --color-heat-hover: #9A3412;
  --color-heat-bright: #EA580C;  /* DECORATIVE ONLY — white text on it is 3.56, fails AA */
  --color-heat-deep: #7C2D12;
  --color-heat-tint: #FFF8F3;

  /* Amber — mission / truth-stamp accents */
  --color-amber: #F59E0B;
  --color-amber-deep: #B45309;   /* --color-amber-pale on this = 4.51, at threshold */
  --color-amber-pale: #FEF3C7;
  --color-amber-tint: #FDBA74;   /* focus ring on dark */
  --color-amber-tint-2: #FCD34D;

  /* Status */
  --color-success: #15803D;         /* white text = 5.02 */
  --color-success-strong: #047857;  /* white glyph = 5.48 */
  --color-success-pale: #86EFAC;
  --color-danger: #B91C1C;
  --color-danger-bright: #EF4444;
  --color-danger-pale: #FCA5A5;
  --color-info-strong: #0369A1;  /* white text = 5.93 */
  --color-info-mid: #0284C7;     /* NON-TEXT ONLY — white text on it is 4.10, fails AA */
  --color-info: #38BDF8;
  --color-info-pale: #BAE6FD;

  /* Water & invitation glows */
  --color-water: rgba(56, 189, 248, 0.13);
  --color-water-edge: rgba(224, 242, 254, 0.5);
  --color-water-glow: rgba(125, 211, 252, 0.75);
  --color-food-glow: rgba(245, 158, 11, 0.65);

  /* Phone / radio voice (Act 2 clinic call). A third speaker surface, cool and
     electric so it can never be mistaken for Callie (ink) or Tay (ember). */
  --surface-radio: #08212C;
  --surface-radio-pill: rgba(8, 33, 44, 0.92);
  --color-radio: #06B6D4;        /* NON-TEXT ONLY — border, bolt, glow */
  --color-radio-glow: rgba(6, 182, 212, 0.45);
  --text-radio: #E0F2FE;         /* on --surface-radio = 14.48 */

  /* Illustration mats — the warm ground behind a framed art plate */
  --surface-art-mat: #F3E4DA;
  --gum-blanched: #F2DCD6;       /* capillary-refill blanch, illustration only */

  /* Tay's temperature ramp */
  --temp-normal: #34D399;
  --temp-elevated: #FCD34D;
  --temp-danger: #F97316;
  --temp-critical: #EF4444;

  /* Radius */
  --radius-xs: 6px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-2xl: 28px;
  --radius-pill: 100px;

  /* Elevation. Shadows cast onto the warm page are warm-tinted; shadows cast
     inside the scene card are neutral. */
  --elev-1: 0 2px 8px rgba(0, 0, 0, 0.12);
  --elev-2: 0 4px 12px rgba(0, 0, 0, 0.2);
  --elev-3: 0 4px 14px rgba(0, 0, 0, 0.25);
  --elev-4: 0 8px 24px rgba(0, 0, 0, 0.3);
  --elev-5: 0 10px 28px rgba(0, 0, 0, 0.45);
  --elev-card: 0 24px 60px -12px rgba(56, 36, 24, 0.3), 0 4px 18px rgba(56, 36, 24, 0.12);
  --elev-modal: 0 24px 60px rgba(0, 0, 0, 0.8);

  /* Focus. Two rings, by ground. */
  --focus-ring-width: 3px;
  --focus-ring-offset: 3px;
  --focus-ring-on-light: var(--palette-teal-dark);
  --focus-ring-on-dark: var(--color-amber-tint);

  /* Typography */
  --font-family-display: 'Outfit', 'Nunito', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-family-body: 'Plus Jakarta Sans', 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;

  /* Motion */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-back: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --ease-pop: cubic-bezier(0.34, 1.56, 0.64, 1);
  --dur-instant: 0.18s;
  --dur-fast: 0.25s;
  --dur-base: 0.35s;
  --dur-slow: 0.8s;
  --dur-scene: 1.6s;
  --dur-escalation: 2.5s;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fade: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* The [hidden] attribute only hides via a UA rule of `display: none`, so any author rule
   that sets display — and the HUD pills, the speech layers and most of the scene use
   flex or block — silently wins and the element stays on screen. The screens toggle
   visibility with `el.hidden = …` rather than by rebuilding markup, so this has to hold
   everywhere: without it, Act 1's HUD showed the leads counter and the hints counter at
   the same time. */
[hidden] {
  display: none !important;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  font-family: var(--font-family-body);
  background-color: var(--palette-peach-light);
  color: var(--palette-text-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Viewport Container */
#app {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: radial-gradient(circle at 80% 20%, #FFF8F3 0%, var(--palette-peach-light) 60%, var(--palette-peach) 100%);
}

/* Stage Area for Scenes */
.stage-container {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

/* Hidden Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}