/* ============================================================
   ai-coustics · Typography tokens
   ------------------------------------------------------------
   Milling      → display, headings, big numerals, logo lockups
   Hanken Grot. → body & UI  (substitution, see readme)
   Geist Mono   → code, telemetry, metrics, API payloads
   Type scale is a ~1.25 minor-third, tightened at body sizes.
   ============================================================ */

:root {
  /* families */
  --font-display: 'Milling', 'Hanken Grotesk', system-ui, sans-serif;
  --font-sans: 'Hanken Grotesk', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* weights */
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* fluid display sizes (clamped) */
  --text-display-xl: clamp(3rem, 6vw, 5.25rem);   /* hero */
  --text-display-l: clamp(2.5rem, 4.5vw, 3.75rem);
  --text-display-m: clamp(2rem, 3.2vw, 2.75rem);

  /* static step scale */
  --text-4xl: 3rem;     /* 48 */
  --text-3xl: 2.25rem;  /* 36 */
  --text-2xl: 1.75rem;  /* 28 */
  --text-xl: 1.375rem;  /* 22 */
  --text-lg: 1.125rem;  /* 18 */
  --text-md: 1rem;      /* 16 — base */
  --text-sm: 0.875rem;  /* 14 */
  --text-xs: 0.75rem;   /* 12 */

  /* line-heights */
  --leading-tight: 1.05;   /* display */
  --leading-snug: 1.2;     /* headings */
  --leading-normal: 1.55;  /* body */
  --leading-relaxed: 1.7;

  /* tracking */
  --tracking-tight: -0.02em;   /* large display */
  --tracking-normal: 0em;
  --tracking-wide: 0.02em;
  --tracking-caps: 0.08em;     /* eyebrow / overline */

  /* ---- semantic roles ---- */
  --role-eyebrow-size: var(--text-xs);
  --role-body-size: var(--text-md);
  --role-caption-size: var(--text-sm);
}