/* Hallmark · genre: editorial · macrostructure: Portfolio Grid · theme: custom (vibe: "engineering report, quiet, cool paper, one blue")
 * paper oklch(98.6% 0.004 250) · accent oklch(47% 0.16 258) · Space Grotesk + IBM Plex Sans, Plex Mono for specs only
 * axes: light / grotesk-sans / cool · nav: N9 edge-aligned · footer: Ft2 inline single line · enrichment: none (real screenshots and photos)
 */
:root {
  /* colour */
  --color-paper:      oklch(98.6% 0.004 250);
  --color-paper-2:    oklch(96.2% 0.006 250);
  --color-paper-3:    oklch(93.0% 0.008 252);
  --color-ink:        oklch(22% 0.018 258);
  --color-ink-2:      oklch(35% 0.016 257);
  --color-muted:      oklch(50% 0.014 256);
  --color-rule:       oklch(89% 0.008 255);
  --color-rule-2:     oklch(80% 0.010 255);
  --color-accent:     oklch(47% 0.16 258);
  --color-accent-ink: oklch(98.6% 0.004 250);
  --color-focus:      oklch(52% 0.19 258);
  --color-todo:       oklch(62% 0.15 60);
  --color-todo-bg:    oklch(96% 0.035 80);

  /* type */
  --font-display: "Space Grotesk", "IBM Plex Sans", ui-sans-serif, sans-serif;
  --font-body:    "IBM Plex Sans", ui-sans-serif, "Segoe UI", sans-serif;
  --font-mono:    "IBM Plex Mono", ui-monospace, "Cascadia Mono", monospace;

  --text-xs:   0.8rem;
  --text-sm:   0.9rem;
  --text-base: 1.0625rem;
  --text-md:   1.25rem;
  --text-lg:   1.5625rem;
  --text-xl:   clamp(1.9rem, 1.6vw + 1.3rem, 2.6rem);
  --text-display: clamp(2.2rem, 2.6vw + 1.3rem, 3.6rem);

  /* space (4 pt) */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs:  0.75rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;

  --shell:  76rem;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --rule-w: 1px;
  --radius: 2px;

  /* 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-short: 160ms;
  --dur-med:   260ms;
}