/* Keep the supplied artwork in full color on light backgrounds. */
.brand img {
  background: transparent;
  filter: none;
}

/* No white tile around the logo on dark backgrounds. */
html[data-theme="dark"] .brand,
html[data-theme="dark"] #sidebar .brand {
  background: transparent;
  border-radius: 0;
}

html[data-theme="dark"] #sidebar .brand {
  padding: 0;
}

/* Recolor only visible pixels; the original alpha channel stays intact. */
html[data-theme="dark"] .brand img {
  filter: brightness(0) invert(1);
}