/* Hallmark · macrostructure: Asymmetric Split + live demo · tone: calm, precise · anchor hue: Kikita UI primary #5b4fe0
 * theme: custom (vibe: "calm precise evidence ledger") · paper oklch(96.5% 0.006 85) · accent oklch(53% 0.21 277) = Kikita UI seed primary
 * fonts: Bricolage Grotesque (display) + system-ui (body)
 * axes: light / geometric-sans / cool-violet on warm neutral
 */

@font-face {
  font-family: "Bricolage Grotesque";
  src: url("../assets/fonts/bricolage-grotesque-latin-wght.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}

:root {
  color-scheme: light dark;

  /* colour: light */
  --color-paper: oklch(96.5% 0.006 85);
  --color-surface: oklch(99% 0.003 85);
  --color-ink: oklch(21% 0.008 85);
  --color-muted: oklch(46% 0.014 85);
  --color-line: oklch(87% 0.01 85);
  --color-accent: oklch(53% 0.21 277);
  --color-on-accent: oklch(98% 0.01 277);
  --color-mark: oklch(89% 0.085 88);
  --color-focus: oklch(53% 0.21 277);

  /* type */
  --font-display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-md: 1.0625rem;
  --text-lg: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  --text-xl: clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 3vw, 3.5rem);
  --text-display: clamp(2.75rem, 1.4rem + 5.6vw, 6rem);

  /* space (4pt) */
  --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: 4.5rem;
  --space-9: 7rem;

  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-pill: 999px;

  --rule: 1px solid var(--color-line);

  /* motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 150ms;
  --dur-base: 300ms;
  --dur-slow: 700ms;

  --measure: 62ch;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --page: 78rem;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-paper: oklch(17% 0.006 85);
    --color-surface: oklch(21.5% 0.007 85);
    --color-ink: oklch(95% 0.006 85);
    --color-muted: oklch(72% 0.012 85);
    --color-line: oklch(31% 0.01 85);
    --color-accent: oklch(72% 0.15 277);
    --color-on-accent: oklch(17% 0.03 277);
    --color-mark: oklch(43% 0.07 88);
    --color-focus: oklch(76% 0.15 277);
  }
}

:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] {
  color-scheme: dark;
  --color-paper: oklch(17% 0.006 85);
  --color-surface: oklch(21.5% 0.007 85);
  --color-ink: oklch(95% 0.006 85);
  --color-muted: oklch(72% 0.012 85);
  --color-line: oklch(31% 0.01 85);
  --color-accent: oklch(72% 0.15 277);
  --color-on-accent: oklch(17% 0.03 277);
  --color-mark: oklch(43% 0.07 88);
  --color-focus: oklch(76% 0.15 277);
}

/* fallback for browsers without oklch() */
@supports not (color: oklch(0% 0 0)) {
  :root {
    --color-paper: #f6f5f1;
    --color-surface: #fcfbf9;
    --color-ink: #1c1a16;
    --color-muted: #66625a;
    --color-line: #dedbd2;
    --color-accent: #5b4fe0;
    --color-on-accent: #f7f6ff;
    --color-mark: #ecdc9c;
    --color-focus: #5b4fe0;
  }
  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --color-paper: #14130f;
      --color-surface: #1c1b17;
      --color-ink: #f3f1ea;
      --color-muted: #aaa69b;
      --color-line: #2d2b25;
      --color-accent: #9d94f2;
      --color-on-accent: #120f2e;
      --color-mark: #5d4f1c;
      --color-focus: #b0a9f5;
    }
  }
  :root[data-theme="dark"] {
    --color-paper: #14130f;
    --color-surface: #1c1b17;
    --color-ink: #f3f1ea;
    --color-muted: #aaa69b;
    --color-line: #2d2b25;
    --color-accent: #9d94f2;
    --color-on-accent: #120f2e;
    --color-mark: #5d4f1c;
    --color-focus: #b0a9f5;
  }
}