/* Octo Code — elevation. Flat and layered: depth comes from background color, not shadows. */
:root {
  --elevation-0: var(--color-bg);         /* base canvas  #0D1117 */
  --elevation-1: var(--color-surface);    /* cards/panels #161B22 */
  --elevation-2: var(--color-bg-overlay); /* popovers     #1C2128 */
  --elevation-3: var(--color-bg-modal);   /* modals       #21262D */

  /* Used sparingly: sticky headers, floating action bars only */
  --shadow-subtle: 0 1px 0 rgba(27, 31, 36, 0.04);
  --shadow-overlay: 0 8px 24px rgba(1, 4, 9, 0.5); /* dropdowns/modals if needed */
}