/* ==========================================================================
   AURELIS — Design Tokens
   Palette derived from site materials: basalt, limestone, clay, moss, metal.
   Dark basalt is the dominant field; limestone/bone carry text and light
   passages; clay and moss are restrained accents, never backgrounds.
   ========================================================================== */

:root {
  /* ---- Color: material palette ---- */
  --color-basalt: #121210;
  --color-basalt-raised: #1a1a17;
  --color-basalt-line: #2a2a25;
  --color-limestone: #e8e1d5;
  --color-bone: #f4f0e8;
  --color-clay: #9a5a3a;
  --color-clay-soft: #b97b57;
  --color-moss: #4f594b;
  --color-metal: #746b5c;
  --color-metal-line: rgba(116, 107, 92, 0.28);

  /* ---- Color: semantic roles ---- */
  --surface: var(--color-basalt);
  --surface-raised: var(--color-basalt-raised);
  --surface-light: var(--color-bone);
  --surface-light-raised: var(--color-limestone);
  --ink: var(--color-bone);
  --ink-muted: var(--color-metal);
  --ink-on-light: var(--color-basalt);
  --ink-on-light-muted: #55524a;
  --line: var(--color-metal-line);
  --line-on-light: rgba(18, 18, 16, 0.14);
  --accent: var(--color-clay);
  --accent-soft: var(--color-clay-soft);
  --accent-secondary: var(--color-moss);
  --focus-ring: var(--color-clay-soft);

  /* ---- Typography ---- */
  --font-display: "Cormorant Garamond", "Times New Roman", serif;
  --font-body: "Manrope", -apple-system, "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", ui-monospace, monospace;

  --fs-display-xl: clamp(3.4rem, 2.4rem + 5.6vw, 9.5rem);
  --fs-display-lg: clamp(2.6rem, 1.9rem + 3.6vw, 6.4rem);
  --fs-display-md: clamp(2rem, 1.6rem + 2vw, 3.8rem);
  --fs-display-sm: clamp(1.6rem, 1.4rem + 1vw, 2.4rem);
  --fs-body-lg: clamp(1.15rem, 1.05rem + 0.5vw, 1.5rem);
  --fs-body: clamp(1rem, 0.95rem + 0.2vw, 1.125rem);
  --fs-small: 0.9rem;
  --fs-mono: 0.78rem;
  --fs-mono-lg: 0.95rem;

  --lh-tight: 1.05;
  --lh-snug: 1.25;
  --lh-body: 1.6;

  --ls-wide: 0.14em;
  --ls-wider: 0.22em;

  /* ---- Spacing (fluid) ---- */
  --space-1: clamp(0.5rem, 0.46rem + 0.2vw, 0.625rem);
  --space-2: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
  --space-3: clamp(1.25rem, 1.1rem + 0.6vw, 1.75rem);
  --space-4: clamp(1.75rem, 1.5rem + 1vw, 2.5rem);
  --space-5: clamp(2.5rem, 2rem + 2vw, 4rem);
  --space-6: clamp(3.5rem, 2.6rem + 3.6vw, 6rem);
  --space-7: clamp(5rem, 3.4rem + 6vw, 9rem);
  --space-8: clamp(7rem, 4.5rem + 9vw, 13rem);

  --gutter: clamp(1.25rem, 1rem + 2.4vw, 3.5rem);
  --content-max: 90rem;
  --measure: 38rem;

  /* ---- Motion ---- */
  --ease-editorial: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-soft: cubic-bezier(0.16, 0.84, 0.44, 1);
  --dur-fast: 0.32s;
  --dur-med: 0.6s;
  --dur-slow: 1.1s;

  /* ---- Elevation / structure ---- */
  --hairline: 1px solid var(--line);
  --hairline-light: 1px solid var(--line-on-light);
  --radius-none: 0px;

  --z-terrain: 1;
  --z-content: 10;
  --z-nav: 500;
  --z-cursor: 900;
  --z-overlay: 800;
  --z-loader: 1000;
}

/* Reduced motion tokens override durations, not layout */
@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-fast: 0.001s;
    --dur-med: 0.001s;
    --dur-slow: 0.001s;
  }
}