/* Shared fill and height for the header controls; preserve native visibility rules. */
.md-header {
  --header-control-surface: var(--accent-fill);
  --header-control-hover: #c6ddf5;
  --header-control-ink: #005eb8;
  --header-control-border: rgb(0 94 184 / 25%);
  --header-control-height: 1.6rem;
}

.md-header form[data-md-component="palette"] > .md-header__button,
.md-header .layout-width-toggle[aria-pressed],
.md-header .md-search__button,
.md-header > .md-header__inner > label[for="__search"] {
  background-color: var(--header-control-surface);
  color: var(--header-control-ink);
  border-radius: 0.3rem;
  box-shadow: inset 0 0 0 1px var(--header-control-border);
  box-sizing: border-box;
  height: var(--header-control-height);
  opacity: 1;
}

.md-header form[data-md-component="palette"] > .md-header__button,
.md-header > .md-header__inner > label[for="__search"] {
  width: var(--header-control-height);
  padding: 0.3rem;
}

.md-header form[data-md-component="palette"] > .md-header__button:hover,
.md-header .layout-width-toggle[aria-pressed]:hover,
.md-header .md-search__button:hover,
.md-header > .md-header__inner > label[for="__search"]:hover {
  background-color: var(--header-control-hover);
  color: var(--header-control-ink);
}

.md-header form[data-md-component="palette"] > .md-header__button:active,
.md-header .layout-width-toggle[aria-pressed]:active,
.md-header .md-search__button:active,
.md-header > .md-header__inner > label[for="__search"]:active {
  background-color: var(--header-control-hover);
  color: var(--header-control-ink);
}

.md-header .layout-width-toggle[aria-pressed="true"] {
  box-shadow: inset 0 -2px 0 var(--header-control-ink), inset 0 0 0 1px var(--header-control-border);
}

/* Zensical paints its search glyph and keyboard shortcut with pseudo-elements. */
.md-header .md-search__button::before {
  background-color: currentColor;
}

.md-header .md-search__button::after {
  background-color: transparent;
  color: var(--header-control-ink);
  font-weight: 600;
}

.md-header form[data-md-component="palette"]:has(input:is(:focus-visible, .focus-visible)) > .md-header__button:not([hidden]),
.md-header .layout-width-toggle[aria-pressed]:is(:focus-visible, .focus-visible),
.md-header .md-search__button:is(:focus-visible, .focus-visible),
.md-header > .md-header__inner > label[for="__search"]:is(:focus-visible, .focus-visible) {
  outline: 3px solid #ffffff;
  outline-offset: 2px;
  box-shadow: inset 0 0 0 2px var(--header-control-ink);
}