/*
 * The frame around the content: logo, header, search, theme switch,
 * navigation, footer and buttons.
 *
 * Drawn the way the app draws its chrome: the canvas colour throughout,
 * edges as 0.5px hairlines in chrome-border, glyphs in chrome-icon, and the
 * active item marked by the sidebar's wash rather than by colour alone.
 */

/*
 * The wordmark, as in the splash (Splash.css, .splash-logo): two exports,
 * swapped on data-theme. Not one image recoloured: the word is black in one
 * and white in the other, and the cube faces differ too.
 */
.bs-logo {
  display: block;
  aspect-ratio: 571 / 262;
  background: url('../logo/beacon.light.png') no-repeat center / contain;
}

:root[data-theme='dark'] .bs-logo {
  background-image: url('../logo/beacon.dark.png');
}

/* Header: the splash's title bar, with the site's sections in it. -------- */

.md-header.bs-header {
  color: var(--chrome-text);
  background: var(--canvas);
  border-bottom: 0.5px solid var(--chrome-border);
  box-shadow: none;
}

.bs-header__inner {
  gap: 8px;
  align-items: center;
}

/*
 * The app's menu-bar mark (MenuBar.css, .menu-bar-logo): text-primary, and
 * 0.75 of the bar's height, which is the Figma frame's ratio. The bar is 48px
 * in both, so the glyph is 36px here too.
 */
.bs-header__home {
  display: flex;
  flex: none;
  margin: 0 16px 0 8px;
  color: var(--text-primary);
}

.bs-logo-beta {
  display: block;
  width: auto;
  height: 36px;
}

/* Clipped, not wrapped, when the open search field takes their room. */
.bs-header__sections {
  display: flex;
  gap: 4px;
  min-width: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
  list-style: none;
}

.bs-header__section {
  display: block;
  white-space: nowrap;
  padding: 4px 10px;
  font-size: 14px;
  color: var(--chrome-text);
  border-radius: 4px;
}

.bs-header__section:hover,
.bs-header__section:focus-visible {
  color: var(--text-primary);
}

.bs-header__section--active {
  color: var(--text-primary);
  background: var(--sidebar-active-bg);
}

.bs-header__controls {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-left: auto;
}

.bs-header .md-header__button.md-icon {
  color: var(--chrome-icon);
}

/* Below Material's drawer breakpoint the sections move into the drawer. */
@media screen and (max-width: 76.2344em) {
  .bs-header__sections {
    display: none;
  }

  .bs-header__home {
    margin-left: 0;
  }
}

/* Search: the app's menu bar search field. -------------------------------- */

@media screen and (min-width: 60em) {
  .md-search__form {
    background: var(--chrome-search-bg);
    border: 0.5px solid var(--chrome-search-stroke);
    border-radius: 4px;
  }

  .md-search__form:hover {
    background: var(--chrome-search-bg);
  }

  [data-md-toggle='search']:checked ~ .md-header .md-search__form {
    background: var(--canvas);
    border-radius: 4px 4px 0 0;
  }

  .md-search__output {
    border: 0.5px solid var(--chrome-border);
    border-top: 0;
    border-radius: 0 0 4px 4px;
    overflow: hidden;
  }
}

/* The grey suggestion is drawn under the typed text, so both need the
   same size or the two sets of letters drift apart. */
.md-search__input,
.md-search__suggest {
  font-size: 14px;
}

.md-search__input {
  color: var(--text-primary);
}

.md-search__input::placeholder,
.md-search__icon {
  color: var(--chrome-text);
}

.md-search__scrollwrap,
.md-search-result {
  background: var(--canvas);
}

.md-search-result__meta {
  color: var(--text-muted);
  background: var(--surface);
}

.md-search-result mark {
  color: var(--accent);
}

/* Theme switch: the app's SegmentedControl, with icons for labels. ------- */

.bs-theme-switch {
  display: inline-flex;
  flex: none;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.bs-theme-switch[hidden] {
  display: none;
}

.bs-theme-switch__option {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 24px;
  padding: 0;
  color: var(--chrome-icon);
  background: transparent;
  border: 0;
  cursor: pointer;
}

.bs-theme-switch__option svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
}

.bs-theme-switch__option:hover {
  color: var(--text-primary);
}

.bs-theme-switch__option[aria-checked='true'] {
  color: var(--accent);
  background: var(--sidebar-active-bg);
}

.bs-theme-switch__option:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: -2px;
}

/* Navigation sidebar and table of contents. ------------------------------- */

.md-nav__link {
  color: var(--text-secondary);
}

.md-nav__link:hover,
.md-nav__link:focus {
  color: var(--text-primary);
}

.md-nav__title {
  font-weight: 500;
  color: var(--text-muted);
}

/* The current page: the app's active sidebar wash. */
.md-sidebar--primary .md-nav__link--active {
  color: var(--text-primary);
  font-weight: 500;
}

/* The wash only in the sidebar. The mobile drawer's rows are full width
   already and mark the current page by colour. */
@media screen and (min-width: 76.25em) {
  .md-sidebar--primary .md-nav__item .md-nav__link--active {
    margin-inline: -8px;
    padding: 2px 8px;
    background: var(--sidebar-active-bg);
    border-radius: 4px;
  }
}

.md-sidebar--secondary .md-nav__link--active {
  color: var(--accent);
}

/*
 * The mobile drawer's title bar: the wordmark on the canvas, not a blue band.
 * Material also prints the site name under the logo; the wordmark already
 * says "Beacon", so the text is set to zero size and the bar closes up
 * around the logo. The logo keeps its own label for screen readers.
 */
.md-nav--primary .md-nav__title[for='__drawer'] {
  height: auto;
  padding: 12px 16px;
  font-size: 0;
  line-height: 0;
  background: var(--canvas);
  border-bottom: 0.5px solid var(--chrome-border);
}

.md-nav--primary .md-nav__title[for='__drawer'] .md-logo {
  position: static;
  margin: 0;
  padding: 0;
}

.md-nav--primary .md-nav__title[for='__drawer'] .bs-logo {
  height: 32px;
}

.md-sidebar--primary .md-sidebar__scrollwrap {
  background: var(--canvas);
}

/* Footer: small and muted, like the splash's version line. --------------- */

.md-footer.bs-footer {
  color: var(--text-muted);
  background: var(--canvas);
  border-top: 0.5px solid var(--chrome-border);
}

.bs-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: baseline;
  padding: 16px 0.8rem 20px;
  font-size: 13px;
}

.bs-footer__copyright {
  margin: 0;
}

.bs-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.bs-footer__links a {
  color: var(--text-secondary);
}

.bs-footer__links a:hover,
.bs-footer__links a:focus-visible {
  color: var(--text-primary);
}

.bs-footer__build {
  flex-basis: 100%;
  margin: 0;
  font-size: 11px;
  font-style: italic;
}

/*
 * Buttons: the app's Button at a size for reading rather than for a dense
 * toolbar. Accent is an outline with a transparent fill, one weight up, as in
 * the app: the affirmative button is not just a recolour.
 */
.md-typeset .bs-button {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.3;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.md-typeset .bs-button:hover {
  color: var(--text-primary);
  border-color: var(--chrome-border);
}

.md-typeset .bs-button--accent {
  font-weight: 500;
  color: var(--accent);
  background: transparent;
  border-color: var(--accent);
}

.md-typeset .bs-button--accent:hover {
  color: var(--accent);
  background: var(--info-bg);
  border-color: var(--accent);
}

.md-typeset .bs-button:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 1px;
}