/* ============================================================
   KLART · SPACING TOKENS
   4px base grid. Tight enough for SAP-grade data density,
   with generous step-ups for Apple-like breathing room.
   ============================================================ */

:root {
  --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 */
  --space-20: 5rem;     /* 80 */
  --space-24: 6rem;     /* 96 */

  /* common layout constants */
  --rail-width:   15rem;   /* 240 — app sidebar */
  --topbar-height: 4rem;   /* 64  — app header / nav */
  --content-max: 64rem;    /* 1024 — reading width */
  --page-gutter:  1.5rem;  /* 24  — horizontal page padding */
}