/* Hallmark · design tokens
 * project: NSCALE × byGauthier — The Sound of Superintelligence
 * theme: custom "Copper Hall" · vibe: data hall at night, copper power, precise
 * axes: paper-band = dark · display-style = grotesk-sans · accent-hue = warm (52°)
 *
 * Every colour and font-family in styles.css references a token from this file.
 */
:root {
  /* ---- Type · house pairing + one technical mono ------------------- */
  --font-display: "Cabinet Grotesk", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: "Switzer", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* ---- Colour · cool near-black ground, warm copper signal ---------- */
  --color-paper: oklch(14.5% 0.004 250);      /* page */
  --color-paper-2: oklch(17.5% 0.005 250);    /* raised panels */
  --color-paper-3: oklch(21% 0.006 250);      /* hover / controls */
  --color-paper-deep: oklch(11% 0.004 250);   /* CTA ground */
  --color-paper-glass: oklch(14.5% 0.004 250 / 0.82);
  --color-rule: oklch(100% 0 0 / 0.09);
  --color-rule-firm: oklch(100% 0 0 / 0.2);
  --color-ink: oklch(95% 0.006 85);           /* off-white */
  --color-ink-2: oklch(80% 0.006 85);
  --color-muted: oklch(68% 0.006 250);        /* body-secondary */
  --color-faint: oklch(56% 0.006 250);        /* labels only */
  --color-wave-rest: oklch(100% 0 0 / 0.2);

  --color-signal: oklch(74% 0.165 52);        /* electric copper */
  --color-signal-soft: oklch(74% 0.165 52 / 0.14);
  --color-signal-ink: oklch(17% 0.03 52);     /* text on signal */
  --color-focus: oklch(82% 0.14 60);

  /* Expression tints — one warm family (+ one cool) so the four read as one system */
  --tint-core: oklch(74% 0.165 52);
  --tint-intelligence: oklch(84% 0.05 230);
  --tint-power: oklch(64% 0.17 38);
  --tint-human: oklch(81% 0.11 72);
  --tint-future: oklch(90% 0.08 95);

  /* ---- Space · 4pt ------------------------------------------------- */
  --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;
  --space-5xl: 13rem;
  --gutter: clamp(1rem, 5vw, 5.5rem);
  --maxw: 84rem;
  --measure: 52ch;

  /* ---- Type scale -------------------------------------------------- */
  --text-2xs: 0.6875rem;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: 1.1875rem;
  --text-lg: 1.5rem;
  --text-xl: clamp(1.625rem, 2.4vw, 2.25rem);
  --text-2xl: clamp(2.125rem, 4.4vw, 4rem);
  --text-3xl: clamp(2.5rem, 6.4vw, 6.25rem);
  --text-display: clamp(2.75rem, 10.2vw, 10.5rem);

  /* ---- 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: 160ms;
  --dur-mid: 420ms;
  --dur-slow: 900ms;

  --radius-sm: 2px;
  --radius-pill: 999px;
}