/* Hallmark · macrostructure: Portfolio Grid · tone: austere · anchor hue: 250 (cool neutral)
 * genre: editorial · theme: Atelier (catalog, tuned quiet) · enrichment: none · nav: N9 · footer: Ft2
 * axes: paper=light · display=grotesk-light (Geist 300) · accent=neutral (ink; focus ring only chromatic)
 * contrast: pass (40–41)
 * Hallmark · pre-emit critique: P4 H4 E4 S4 R5 V4
 */
:root {
  /* colour — all OKLCH, tinted toward hue 250 */
  --color-paper:    oklch(97.5% 0.006 250);
  --color-paper-2:  oklch(94.5% 0.008 250);
  --color-rule:     oklch(86%   0.008 250);
  --color-rule-2:   oklch(74%   0.010 250);
  --color-neutral:  oklch(48%   0.012 250);
  --color-muted:    oklch(42%   0.014 250);
  --color-ink:      oklch(20%   0.014 250);
  --color-accent:   oklch(20%   0.014 250);   /* austere: the accent is the ink */
  --color-focus:    oklch(50%   0.17  250);
  --color-pending:  oklch(90%   0.008 250);

  /* type */
  --font-display: "Geist", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", ui-sans-serif, sans-serif;
  --font-body:    "Geist", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", ui-sans-serif, sans-serif;
  --font-mono:    "Geist Mono", "Hiragino Sans", ui-monospace, monospace;
  --weight-display: 300;
  --weight-body: 400;
  --weight-strong: 500;

  --text-xs:   0.8rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.25rem;
  --text-lg:   1.5625rem;
  --text-xl:   1.9531rem;
  --text-2xl:  2.4414rem;
  --text-display: clamp(2.25rem, 3.5vw + 1rem, 3.75rem);

  /* space — 4pt scale */
  --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;
  --page-gutter: clamp(1rem, 4vw, 3rem);
  --measure: 38em; /* 日本語は 1 文字 = 1em なので 38–42 字 */

  /* rules & radius */
  --rule-hair: 1px;
  --radius: 0;

  /* 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-micro: 120ms;
  --dur-short: 200ms;
  --dur-long:  420ms;

  --z-base: 1;
  --z-raised: 10;
  --z-sticky: 200;
}