/* Top navigation header.
 *
 * Grid at ≥$grid-min (aligns with sidebar/main/TOC columns
 * below), plain flex row otherwise. */

$gutter: 0.5rem;
$grid-min: 768px;
$inline-nav-min: 1100px;
$toc-visible-min: 1280px;

.body {
  /* Below the TOC breakpoint, the right header cell should only be as
   * wide as its own controls; reserving the full TOC width leaves an
   * awkward empty gutter. Once the TOC appears again, snap the header's
   * third track back to the shared TOC column width so the seams align. */
  --nd-header-utils-width: max-content;

  @media (min-width: $toc-visible-min) {
    --nd-header-utils-width: var(--fd-toc-width);
  }

  display: flex;
  align-items: stretch;
  height: 56px;
  border-bottom: 1px solid var(--color-fd-border);

  @media (min-width: $grid-min) {
    display: grid;
    grid-template-columns:
      var(--fd-sidebar-col)
      minmax(0, 1fr)
      var(--nd-header-utils-width);
  }
}

.logoCell {
  display: flex;
  align-items: center;
  padding-left: $gutter;
  flex: 0 0 auto;
  min-width: 0;

  @media (min-width: $grid-min) {
    border-left: 1px solid var(--color-fd-border);
    border-right: 1px solid var(--color-fd-border);
  }
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
}

.mainNavLinks {
  display: none;

  @media (min-width: $inline-nav-min) {
    display: block;
  }
}

.mainMenuTrigger {
  display: none;

  @media (min-width: 768px) and (max-width: #{$inline-nav-min - 0.02px}) {
    display: block;
  }
}

.mainGithub {
  display: none;

  @media (min-width: $inline-nav-min) {
    display: block;
  }
}

.utilsGithub {
  display: none;

  @media (min-width: 768px) and (max-width: #{$inline-nav-min - 0.02px}) {
    display: block;
  }
}

.mainCell {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  padding-left: 1rem;
  padding-right: 1rem;
  flex: 1 1 0;
  min-width: 0;

  @media (min-width: 768px) {
    justify-content: space-between;
    padding-right: 1rem;
  }
}

.utilsCell {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.5rem;
  padding-left: 0.75rem;
  padding-right: $gutter;
  flex: 0 0 auto;

  @media (min-width: $grid-min) {
    border-right: 1px solid var(--color-fd-border);
  }

  @media (min-width: $toc-visible-min) {
    padding-left: 0;
  }

  @media (min-width: $inline-nav-min) {
    border-left: 1px solid var(--color-fd-border);
  }
}

.utilsDesktop {
  display: flex;
  align-items: center;
  gap: 0.5rem;

  @media (max-width: 767.98px) {
    display: none;
  }
}

.utilsMobile {
  display: flex;
  align-items: center;

  @media (min-width: 768px) {
    display: none;
  }
}