/* ============================================================
   나눔글꼴 — Spacing, radii, shadows, borders, motion
   A calm, paper-like system. Generous whitespace, hairline
   rules, soft low shadows. Nothing flashy — type leads.
   ============================================================ */

:root {
  /* ---- Spacing scale (4px base) ---- */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4 */
  --space-2: 0.5rem;   /* 8 */
  --space-3: 0.75rem;  /* 12 */
  --space-4: 1rem;     /* 16 */
  --space-5: 1.5rem;   /* 24 */
  --space-6: 2rem;     /* 32 */
  --space-7: 3rem;     /* 48 */
  --space-8: 4rem;     /* 64 */
  --space-9: 6rem;     /* 96 */
  --space-10: 8rem;    /* 128 */

  /* ---- Radii ---- */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 28px;
  --radius-pill: 999px;

  /* ---- Border widths ---- */
  --border-hairline: 1px;
  --border-thick: 2px;
  --border-heavy: 3px;

  /* ---- Shadows (soft, warm, low) ---- */
  --shadow-xs: 0 1px 2px rgba(22, 21, 18, 0.06);
  --shadow-sm: 0 2px 6px rgba(22, 21, 18, 0.07);
  --shadow-md: 0 6px 18px rgba(22, 21, 18, 0.09);
  --shadow-lg: 0 16px 40px rgba(22, 21, 18, 0.12);
  --shadow-focus: 0 0 0 3px rgba(3, 199, 90, 0.35);

  /* ---- Motion ---- */
  --ease-standard: cubic-bezier(0.2, 0, 0.1, 1); /* @kind other */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* @kind other */
  --duration-fast: 120ms; /* @kind other */
  --duration-base: 200ms; /* @kind other */
  --duration-slow: 360ms; /* @kind other */

  /* ---- Layout ---- */
  --container-max: 1200px;
  --container-prose: 680px;
}