/* Simple dark-mode overlay for the legacy UI (temporary). */

#tb-theme-toggle {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 2147483647;
  font: 12px/1.2 system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  padding: 8px 12px;
  border-radius: 9999px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
}

#tb-theme-toggle:hover {
  background: rgba(0, 0, 0, 0.75);
}

html.tb-force-dark {
  filter: invert(1) hue-rotate(180deg);
  background: #0b0b0b;
}

html.tb-force-dark img,
html.tb-force-dark video,
html.tb-force-dark iframe,
html.tb-force-dark canvas {
  filter: invert(1) hue-rotate(180deg);
}

html.tb-force-dark #tb-theme-toggle {
  filter: invert(1) hue-rotate(180deg);
  background: rgba(255, 255, 255, 0.85);
  color: #111;
  border-color: rgba(0, 0, 0, 0.18);
}

html.tb-force-dark #tb-theme-toggle:hover {
  background: rgba(255, 255, 255, 0.95);
}