/* ============================================================
   LAYERING — Pavel Presnov Design System
   One z-index scale for the whole system. Never hard-code z-index
   in product code — reference these so stacking stays predictable.
   ============================================================ */

:root {
  --z-base:       0; /* @kind other */
  --z-raised:     10; /* @kind other */   /* subtly lifted cards, sticky table headers */
  --z-sticky:     20; /* @kind other */   /* sticky toolbars, app top bars */
  --z-nav:        50; /* @kind other */   /* site navigation */
  --z-scrim:      60; /* @kind other */   /* modal / drawer backdrop */
  --z-drawer:     70; /* @kind other */   /* slide-over drawers */
  --z-tooltip:    80; /* @kind other */   /* tooltips */
  --z-dialog:     90; /* @kind other */   /* centered modals */
  --z-toast:      100; /* @kind other */  /* transient notifications — always on top */
}