:root {
  /* Shadows are warm-tinted (brown-black, never neutral grey) so they sit on sandstone surfaces. */
  --shadow-none: none;
  --shadow-xs: 0 1px 2px rgba(58, 20, 13, 0.06);
  --shadow-sm: 0 1px 2px rgba(58, 20, 13, 0.06), 0 2px 6px rgba(58, 20, 13, 0.05);
  --shadow-md: 0 2px 4px rgba(58, 20, 13, 0.05), 0 8px 20px rgba(58, 20, 13, 0.08);
  --shadow-lg: 0 4px 8px rgba(58, 20, 13, 0.06), 0 18px 40px rgba(58, 20, 13, 0.11);
  --shadow-inset-press: inset 0 2px 4px rgba(58, 20, 13, 0.18);
  --ring-focus: 0 0 0 3px rgba(139, 37, 16, 0.28);
  --ring-focus-inverse: 0 0 0 3px rgba(250, 230, 186, 0.5);
}