/* Keep light mode and all status, text, border, and progress colors unchanged. */
:root[data-appearance="dark"] {
  --bg-0: #000;
  --surface: #000;
  --surface-elev: #000;
  --surface-sunken: #000;
  --surface-a: #000;
  --surface-elev-a: #000;
  --canvas-glow: none;
}

:root[data-appearance="dark"] :is(
  .instance-panel,
  .instance-chart-card,
  .assets-hero,
  .theme-masthead
) {
  background: #000;
}