/* ============================================================
   VIVA — Spacing, radii, shadows, motion
   The brand reads "silent": generous whitespace, hairline
   borders, very soft shadows, restrained corner radii.
   ============================================================ */
:root {
  /* ---- Spacing scale (4px base grid) ---- */
  --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: 2.5rem;    /* 40 */
  --space-8: 3rem;      /* 48 */
  --space-9: 4rem;      /* 64 */
  --space-10: 5rem;     /* 80 */
  --space-11: 7rem;     /* 112 */
  --space-12: 9rem;     /* 144 */

  /* ---- Radii — quiet, mostly small ---- */
  --radius-none: 0;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-xl: 22px;
  --radius-pill: 999px;
  --radius-circle: 50%;

  /* ---- Borders ---- */
  --border-hairline: 1px;
  --border-thick: 1.5px;

  /* ---- Shadows — soft, warm, low-contrast ---- */
  --shadow-xs: 0 1px 2px rgba(22, 11, 17, 0.04);
  --shadow-sm: 0 2px 6px rgba(22, 11, 17, 0.05);
  --shadow-md: 0 6px 20px rgba(22, 11, 17, 0.07);
  --shadow-lg: 0 18px 48px rgba(22, 11, 17, 0.10);
  --shadow-focus: 0 0 0 3px var(--ring-brand);

  /* ---- Motion ---- */
  --ease-standard: cubic-bezier(0.22, 0.61, 0.36, 1); /* @kind other */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1); /* @kind other */
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1); /* @kind other */
  --dur-fast: 140ms; /* @kind other */
  --dur-base: 240ms; /* @kind other */
  --dur-slow: 420ms; /* @kind other */
  /* Seed-rotation motif: gentle continuous rotation */
  --dur-rotate: 24s; /* @kind other */

  /* ---- Layout ---- */
  --container-sm: 640px;
  --container-md: 960px;
  --container-lg: 1200px;
  --container-xl: 1440px;
}