/* ============================================================
   UR-system — Spacing, radius, shadow, layout, motion
   Soft, rounded, low-contrast surfaces from the reference set.
   ============================================================ */

: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: 1.25rem;   /* 20 */
  --space-6: 1.5rem;    /* 24 */
  --space-8: 2rem;      /* 32 */
  --space-10: 2.5rem;   /* 40 */
  --space-12: 3rem;     /* 48 */
  --space-16: 4rem;     /* 64 */

  /* ---- Radius --------------------------------------------- */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;     /* inputs, small cards */
  --radius-lg: 14px;     /* cards */
  --radius-xl: 20px;     /* panels, hero cards */
  --radius-2xl: 28px;    /* feature surfaces */
  --radius-pill: 999px;  /* buttons, tags, chips */

  /* ---- Borders -------------------------------------------- */
  --border-width: 1px;
  --border-width-strong: 1.5px;

  /* ---- Shadows (soft, green-tinted, low spread) ----------- */
  --shadow-xs: 0 1px 2px rgba(11, 53, 39, 0.06);
  --shadow-sm: 0 1px 3px rgba(11, 53, 39, 0.07), 0 1px 2px rgba(11, 53, 39, 0.04);
  --shadow-md: 0 4px 12px rgba(11, 53, 39, 0.08), 0 2px 4px rgba(11, 53, 39, 0.04);
  --shadow-lg: 0 12px 28px rgba(11, 53, 39, 0.10), 0 4px 10px rgba(11, 53, 39, 0.05);
  --shadow-xl: 0 24px 56px rgba(11, 53, 39, 0.14);
  --shadow-focus: 0 0 0 3px var(--ring);
  --shadow-inset: inset 0 1px 2px rgba(11, 53, 39, 0.05);

  /* ---- Layout --------------------------------------------- */
  --container-max: 1120px;
  --sidebar-w: 248px;
  --topbar-h: 60px;

  /* ---- Motion --------------------------------------------- */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);     /* @kind other */
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);  /* @kind other */
  --dur-fast: 120ms;   /* @kind other */
  --dur-base: 180ms;   /* @kind other */
  --dur-slow: 280ms;   /* @kind other */
}