/* =========================================================
   Design tokens — single source of truth.
   Indigo-led palette to match the reference site's accent.
   ========================================================= */

:root {
  /* Color — neutral surface */
  --bg-0: #0a0a0a;
  --bg-1: #0f0f0f;
  --bg-2: #141414;
  --bg-3: #1a1a1a;
  --bg-card: #161616;
  --bg-card-hover: #1c1c1c;
  --bg-glass: rgba(10, 10, 10, 0.4);

  --border-1: #1f1f1f;
  --border-2: #2a2a2a;
  --border-3: #383838;

  /* Color — text */
  --text-1: #f5f5f3;
  --text-2: #c4c4c2;
  --text-3: #888886;
  --text-4: #4a4a48;

  /* Color — accent (indigo — reference's signature) */
  --accent: #6666ff;
  --accent-hover: #5555ee;
  --accent-soft: rgba(102, 102, 255, 0.13);
  --accent-glow: rgba(102, 102, 255, 0.35);

  /* Color — gradient (for the animated serif italic word) */
  --grad-1: #4f8cff;
  --grad-2: #6666ff;
  --grad-3: #a78bfa;
  --grad-4: #67e8f9;

  /* Color — warm (stars, warning) */
  --warm: #f59e0b;
  --warm-soft: rgba(245, 158, 11, 0.13);

  /* Color — semantic */
  --success: #10b981;
  --live: #ff5555;

  /* Typography */
  --font-display: "Space Grotesk", "Inter", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-serif: "Instrument Serif", "Source Serif Pro", Georgia, serif;

  --fs-1: clamp(2.75rem, 1.8rem + 4.5vw, 6rem);
  --fs-2: clamp(2rem, 1.4rem + 2.5vw, 3.75rem);
  --fs-3: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);
  --fs-4: clamp(1.125rem, 1rem + 0.6vw, 1.5rem);
  --fs-body: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --fs-sm: 0.875rem;
  --fs-xs: 0.75rem;

  --lh-tight: 0.92;
  --lh-snug: 1.15;
  --lh-body: 1.55;

  --tracking-tight: -0.03em;
  --tracking-snug: -0.015em;
  --tracking-wide: 0.08em;
  --tracking-wider: 0.18em;

  /* Spacing — 4px scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;
  --space-10: 8rem;
  --space-11: 12rem;

  /* Layout */
  --max-w: 88rem;
  --gutter: clamp(1rem, 0.5rem + 2.5vw, 2.5rem);
  --section-pad-y: clamp(4rem, 2rem + 8vw, 10rem);

  /* Radii */
  --r-1: 6px;
  --r-2: 10px;
  --r-3: 16px;
  --r-4: 20px;
  --r-pill: 999px;

  /* Motion */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out-quart: cubic-bezier(0.76, 0, 0.24, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);

  --dur-1: 180ms;
  --dur-2: 320ms;
  --dur-3: 540ms;
  --dur-4: 820ms;
  --dur-5: 1200ms;

  --reveal-distance: 18px;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-1: 1ms;
    --dur-2: 1ms;
    --dur-3: 1ms;
    --dur-4: 1ms;
    --dur-5: 1ms;
    --reveal-distance: 0px;
  }
}