/* Dark mode override — BookTheme is "light" (base), this adds dark support.
   html[data-theme="dark"] specificity (0,1,1) beats :root (0,1,0). */

html[data-theme="dark"] {
  --body-background: #343a40;
  --body-background-tint: transparent;
  --body-font-color: #e9ecef;
  --color-link: #84b2ff;
  --color-visited-link: #b88dff;
  --icon-filter: brightness(0) invert(1);
  --gray-100: #494e54;
  --gray-200: #5c6165;
  --gray-500: #999d9f;
}