/* Hallmark · tokens · theme: Almanac
 * axes — paper band: light (96.5 %) · display style: roman-serif · accent hue: warm (42°)
 * Portable design system for this project. Reference by name; never inline a raw value.
 */

:root {
  /* ---- Type families ---------------------------------------------------- */
  --font-display: "Fraunces", ui-serif, Georgia, serif;
  --font-body: "IBM Plex Sans", ui-sans-serif, system-ui, sans-serif;

  /* ---- Type scale · major third (1.25) from a 16 px body ---------------- */
  --text-sm: 0.8rem; /* 12.8px — labels, small caps */
  --text-base: 1rem; /* 16px    — body */
  --text-md: 1.25rem; /* 20px    — lede, h3 */
  --text-2xl: 2.4414rem; /* 39px    — h2, masthead */
  --text-display: clamp(2.75rem, 5vw + 1rem, 5.25rem);

  --leading-display: 1.06;
  --leading-heading: 1.14;
  --leading-body: 1.6;

  --measure: 62ch;
  --measure-tight: 46ch;

  /* ---- Colour · OKLCH, warm-oat anchor (hue 60–78) ---------------------- */
  --color-paper: oklch(96.5% 0.011 78);
  --color-paper-2: oklch(93.5% 0.014 78);
  --color-paper-3: oklch(90% 0.016 76);
  --color-rule: oklch(83% 0.012 76);
  --color-neutral: oklch(58% 0.01 72); /* rules, large type only — 3.1:1 */
  --color-muted: oklch(43% 0.011 66); /* body-grade secondary — 5.1:1 */
  --color-ink: oklch(21% 0.014 60);
  --color-accent: oklch(46% 0.132 42); /* deep rust */
  --color-accent-soft: oklch(89% 0.036 46); /* placeholder band, mark */
  --color-focus: oklch(46% 0.132 42);

  /* ---- Space · 4 pt base ------------------------------------------------ */
  --space-3xs: 0.125rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 9rem;

  --page-gutter: clamp(1.25rem, 5vw, 4.5rem);
  --page-max: 76rem;

  /* Hit targets — WCAG AA floor and the comfortable size */
  --tap-min: 2.75rem; /* 44px */
  --tap-lg: 3rem; /* 48px */

  /* ---- Rules, radii ----------------------------------------------------- */
  --rule-hair: 1px;
  --rule-thick: 2px;
  --radius-none: 0;
  --radius-sm: 2px;

  /* ---- Motion · Almanac runs at 0.85× ----------------------------------- */
  --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-micro: 100ms;
  --dur-short: 190ms;
  --dur-long: 360ms;

  /* ---- Elevation -------------------------------------------------------- */
  --z-base: 1;
  --z-raised: 10;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-paper: oklch(15% 0.012 60);
    --color-paper-2: oklch(18.5% 0.013 62);
    --color-paper-3: oklch(22% 0.014 64);
    --color-rule: oklch(32% 0.012 66);
    --color-neutral: oklch(56% 0.011 70);
    --color-muted: oklch(74% 0.012 72);
    --color-ink: oklch(93% 0.011 78);
    --color-accent: oklch(72% 0.104 46);
    --color-accent-soft: oklch(30% 0.042 46);
    --color-focus: oklch(76% 0.104 48);
  }
}