/* ============================================================
   Rudolph Gruppe — Radius, shadow, border & motion tokens
   ------------------------------------------------------------
   Aesthetic: engineered, grounded. Tight radii (structural,
   not pillowy), crisp 1px borders, low-spread grounded shadows.
   ============================================================ */

:root {
  /* ---- Radius — restrained, structural ---- */
  --radius-none: 0;
  --radius-xs:   2px;
  --radius-sm:   4px;
  --radius-md:   6px;
  --radius-lg:   10px;
  --radius-xl:   16px;
  --radius-pill: 999px;

  /* ---- Border widths ---- */
  --border-hairline: 1px;
  --border-thick:    2px;
  --border-accent:   3px;   /* signal underline / left rule */

  /* ---- Shadows — grounded, neutral, never colored ---- */
  --shadow-xs:  0 1px 2px rgba(17, 20, 24, 0.06);
  --shadow-sm:  0 1px 3px rgba(17, 20, 24, 0.08), 0 1px 2px rgba(17, 20, 24, 0.04);
  --shadow-md:  0 4px 12px rgba(17, 20, 24, 0.08), 0 1px 3px rgba(17, 20, 24, 0.05);
  --shadow-lg:  0 12px 28px rgba(17, 20, 24, 0.12), 0 4px 8px rgba(17, 20, 24, 0.06);
  --shadow-xl:  0 24px 56px rgba(17, 20, 24, 0.16);
  --shadow-inset: inset 0 1px 0 rgba(255, 255, 255, 0.06);

  /* ---- Motion — confident, no bounce ---- */
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);  /* @kind other */
  --ease-out:      cubic-bezier(0.16, 1, 0.3, 1);  /* @kind other */
  --ease-in:       cubic-bezier(0.5, 0, 0.75, 0);  /* @kind other */
  --dur-fast:   120ms;  /* @kind other */
  --dur-base:   200ms;  /* @kind other */
  --dur-slow:   360ms;  /* @kind other */

  /* ---- Z-index ---- */
  --z-base:    1;     /* @kind other */
  --z-sticky:  100;   /* @kind other */
  --z-overlay: 1000;  /* @kind other */
  --z-modal:   1100;  /* @kind other */
  --z-toast:   1200;  /* @kind other */
}