/* D3: quiet, shared navigation. Keep every destination available without JS. */
/* D5: allow the selected site name to wrap beside locale links on mobile. */
.library-brand { white-space: normal; min-width: 0; line-height: 1.3; }
.library-brand > span:last-child { min-width: 0; }
.library-header {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1.5rem;
  padding-block: 1rem;
}
.library-header .primary-nav {
  display: flex;
  justify-content: flex-end;
  align-items: stretch;
  flex-wrap: wrap;
  gap: .25rem 1.25rem;
  width: auto;
  order: initial;
  border: 0;
  padding: 0;
  font-size: 1rem;
  line-height: 1.5;
}
.library-header .primary-nav a {
  display: flex;
  align-items: center;
  min-width: 44px;
  min-height: 44px;
  max-width: none;
  padding: .5rem 0;
  flex: 0 1 auto;
  color: var(--muted);
  box-shadow: none;
  text-decoration: none;
}
.library-header .primary-nav a:hover,
.library-header .primary-nav a[aria-current],
.library-header .primary-nav a[data-section-active] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: .45em;
}
.library-header .primary-nav a[aria-current] { font-weight: 600; }
.library-header .primary-nav a:active { background: var(--paper); }
.library-header .languages { gap: .25rem; }
.library-header .languages a {
  min-width: 44px;
  min-height: 44px;
  border-radius: 6px;
  font-size: .875rem;
}
.library-header .languages a:not([aria-current]):hover { background: var(--paper); }
.library-header a:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 3px;
}
/* Let longer FR/VI labels wrap as a group before the header becomes crowded. */
@media (max-width: 1200px) {
  .library-header { grid-template-columns: minmax(0, 1fr) auto; gap: .75rem 1.5rem; }
  .library-header .languages { grid-column: 2; grid-row: 1; }
  .library-header .primary-nav { grid-column: 1 / -1; justify-content: flex-start; gap: .25rem 1.5rem; }
}
@media (max-width: 600px) {
  .library-header { padding: 1rem 1.5rem; gap: .75rem 1rem; }
  .library-header .primary-nav {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    column-gap: 1.25rem;
    row-gap: .25rem;
  }
  .library-header .primary-nav a { overflow-wrap: anywhere; }
}
@media (max-width: 359px) {
  .library-header { grid-template-columns: minmax(0, 1fr); }
  .library-header .languages { grid-column: 1; grid-row: 2; }
}