/* Library pages use design tokens. The home hero uses the supplied library/book photograph. */
.site-header--library { border-bottom: 0; }
.site-header--library .site-header__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3) var(--space-5);
}
.site-header--library .brand { grid-column: 1; }
.site-header--library .header-actions { grid-column: 2; grid-row: 1; }
.site-header--library .global-search { grid-column: 1 / -1; grid-row: 2; }
@media (min-width: 52rem) {
  .site-header--library { position: sticky; top: 0; z-index: 30; }
  .site-header--library .site-header__inner { grid-template-columns: auto minmax(0, 1fr) auto; }
  .site-header--library .header-actions { grid-column: 3; }
  .site-header--library .global-search { grid-column: 2; grid-row: 1; }
}
@media (max-width: 30rem) {
  .site-header--library .brand__name {
    position: absolute; width: 1px; height: 1px; margin: -1px; overflow: hidden;
    clip: rect(0 0 0 0); white-space: nowrap;
  }
  .site-header--library .lang-menu__code,
  .site-header--library .lang-menu summary .icon:last-child { display: none; }
}

.global-search {
  display: flex; align-items: center; gap: var(--space-2); width: 100%; max-width: 42rem;
  padding-inline: var(--space-3) var(--space-1); border: 1px solid var(--color-border-input);
  border-radius: var(--radius-md); background: var(--color-surface-raised); color: var(--color-text-muted);
}
.global-search:focus-within { outline: 3px solid var(--color-focus); outline-offset: 2px; }
.global-search input {
  flex: 1; min-width: 0; min-height: 2.75rem; border: 0; outline: 0;
  background: transparent; color: var(--color-text); font: inherit;
}
.global-search input::placeholder { color: var(--color-text-subtle); opacity: 1; }
.global-search .btn { min-height: 2.25rem; }
.global-search--hero { max-width: 40rem; margin-block-start: var(--space-5); }
.global-search--hero input { min-height: 3.25rem; font-size: var(--text-lg); }
.global-search--hero .btn { min-height: 2.75rem; padding-inline: var(--space-5); }

.section-nav { border-block: 1px solid var(--color-border); background: var(--color-surface); }
.section-nav__inner {
  display: flex; align-items: stretch; justify-content: space-between; gap: var(--space-4);
  overflow-x: auto; scrollbar-width: thin;
}
.section-nav__group {
  display: flex; align-items: stretch; gap: var(--space-1); flex: 0 0 auto;
  margin: 0; padding: 0; list-style: none;
}
.section-nav__group--personal { margin-inline-start: auto; }
.section-nav__link {
  display: inline-flex; align-items: center; gap: var(--space-2); min-height: 3rem;
  padding-inline: var(--space-3); border-block-end: 3px solid transparent;
  color: var(--color-text-muted); font-size: var(--text-sm); font-weight: 600;
  text-decoration: none; white-space: nowrap;
}
.section-nav__link:hover { color: var(--color-text); background: var(--color-surface-sunken); }
.section-nav__link[aria-current="page"] {
  border-block-end-color: var(--color-mark); background: var(--color-primary-soft);
  color: var(--color-on-primary-soft);
}
.section-nav__link .icon { width: 1.125rem; height: 1.125rem; }

/* The staff action is visible in the dashboard navigation, not hidden behind a URL. */
.section-nav__link--upload {
  align-self: center;
  min-height: 2.35rem;
  margin-inline-start: var(--space-2);
  border: 1px solid var(--color-primary);
  border-block-end-width: 1px;
  border-radius: 999px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding-inline: var(--space-4);
}
.section-nav__link--upload:hover,
.section-nav__link--upload[aria-current="page"],
.section-nav__link--upload.is-active {
  border-color: var(--color-primary-hover);
  background: var(--color-primary-hover);
  color: var(--color-on-primary);
}


.library-content { padding-block: var(--space-4) var(--space-7); }
.library-main-column { display: grid; gap: var(--space-5); min-width: 0; }
.library-content > .breadcrumbs { margin-block-end: var(--space-2); }
.page-head { padding-block-end: var(--space-3); border-block-end: 1px solid var(--color-border); }
.page-head h1 { font-size: var(--text-2xl); }
.page-head p { margin-block-start: var(--space-2); color: var(--color-text-muted); }

.hero-card {
  padding: clamp(var(--space-4), 4vw, var(--space-7));
  border: 1px solid var(--color-border); border-inline-start: 3px solid var(--color-margin);
  border-radius: var(--radius-lg); color: var(--color-text);
}
.hero-card h1 { max-width: 22ch; font-size: var(--text-display); }
.hero-card h1 strong { display: block; }
.hero-card__lead { margin-block-start: var(--space-3); color: var(--color-text-muted); font-size: var(--text-lg); }

.home-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(20rem, 0.92fr);
  align-items: center;
  gap: clamp(var(--space-5), 4vw, var(--space-7));
}
.home-hero__content { min-width: 0; }
.home-hero__eyebrow {
  margin-block-end: var(--space-2);
  color: var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.home-hero__visual {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-raised);
  box-shadow: var(--shadow-2);
}
.home-hero__visual img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 630 / 350;
  object-fit: cover;
}
.home-hero__visual figcaption {
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-xs);
}
.home-hero__actions { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-block-start: var(--space-4); }

.facts { display: flex; flex-wrap: wrap; gap: var(--space-4) var(--space-6); margin: var(--space-5) 0 0; }
.facts div { display: grid; gap: var(--space-1); }
.facts dt { color: var(--color-text-muted); font-size: var(--text-sm); }
.facts dd { margin: 0; font-size: var(--text-xl); font-weight: 700; font-variant-numeric: tabular-nums; }

.home-section { min-width: 0; }
.section-head { margin-block-end: var(--space-3); }
.section-head h2 { font-size: var(--text-xl); }
.section-head p { margin-block-start: var(--space-1); color: var(--color-text-muted); }
.section-head--row { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.section-link { display: inline-flex; align-items: center; gap: var(--space-1); font-size: var(--text-sm); font-weight: 600; }

.material-detail__cover {
  position: relative; display: grid; place-items: center; aspect-ratio: 2 / 3; overflow: hidden;
  border: 1px solid var(--color-border); border-inline-start: 4px solid var(--color-primary);
  border-radius: var(--radius-sm); background: var(--color-surface-sunken);
  color: var(--color-text-muted); box-shadow: var(--shadow-1);
}
.material-detail__cover img { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; }
.material-detail__cover > span {
  display: grid; justify-items: center; gap: var(--space-2); padding: var(--space-3);
  font-size: var(--text-xs); text-align: center;
}
.material-detail__cover .icon { width: 2.25rem; height: 2.25rem; }
.category-chips { display: flex; flex-wrap: wrap; gap: var(--space-2); margin: 0; padding: 0; list-style: none; }
.category-chips a { display: inline-flex; min-height: 2.75rem; align-items: center; padding-inline: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }

.catalog-filters { display: flex; flex-wrap: wrap; align-items: end; gap: var(--space-3); }
.filter-field { display: grid; gap: var(--space-1); min-width: 9rem; color: var(--color-text-muted); font-size: var(--text-sm); }
.filter-field select, .filter-field input {
  width: 100%; min-height: 2.75rem; padding-inline: var(--space-2);
  border: 1px solid var(--color-border-input); border-radius: var(--radius-md);
  background: var(--color-surface-raised); color: var(--color-text); font: inherit;
}
.filter-reset { min-height: 2.75rem; display: inline-flex; align-items: center; }
.results-heading { margin: 0; color: var(--color-text-muted); font-size: var(--text-sm); }
.pager { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: var(--space-3); margin-block: var(--space-5); }
.pager__state { color: var(--color-text-muted); font-size: var(--text-sm); }

.library-content .empty-state {
  padding: var(--space-6); border: 1px dashed var(--color-border-input);
  border-radius: var(--radius-lg); background: var(--color-surface);
}
.library-content .empty-state--inline { padding: var(--space-5); }
.library-content .empty-state h2, .library-content .empty-state h3 { font-size: var(--text-xl); }
.empty-state__icon { display: block; width: 2.5rem; height: 2.5rem; color: var(--color-primary); }

.material-detail { display: grid; grid-template-columns: minmax(0, 1fr); gap: var(--space-5); align-items: start; }
@media (min-width: 40rem) { .material-detail { grid-template-columns: minmax(10rem, 15rem) minmax(0, 1fr); gap: var(--space-6); } }
.material-detail__cover { max-width: 15rem; }
.material-detail__cover img { object-fit: contain; }
.section-eyebrow { display: block; color: var(--color-text-muted); font-size: var(--text-sm); font-weight: 600; }
.material-detail__content h1 { margin-block: var(--space-1); font-size: var(--text-2xl); }
.material-detail__authors { color: var(--color-text-muted); }
.material-detail__badges { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-block-start: var(--space-3); }
.material-detail__badges span, .file-badge {
  padding: 0 var(--space-2); border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  background: var(--color-primary-soft); color: var(--color-on-primary-soft); font-size: var(--text-xs); font-weight: 600;
}
.material-files { margin-block-start: var(--space-5); padding: var(--space-4); border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-surface); }
.material-files h2, .material-detail__description h2 { font-size: var(--text-lg); }
.material-files__list { display: grid; margin: var(--space-3) 0 0; padding: 0; list-style: none; }
.material-file { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-3); padding-block: var(--space-3); border-block-start: 1px solid var(--color-border); }
.material-file:first-child { border-block-start: 0; }
.material-file__info { display: grid; gap: var(--space-1); min-width: 0; flex: 1 1 12rem; }
.material-file__name { font-weight: 600; overflow-wrap: anywhere; }
.material-file__meta, .material-files__empty, .file-action__reason { color: var(--color-text-muted); font-size: var(--text-sm); }
.material-file__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-2); }
.material-detail__description { margin-block-start: var(--space-5); }
.material-detail__description p { margin-block-start: var(--space-2); }
.material-metadata { display: grid; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); gap: var(--space-3) var(--space-5); margin: var(--space-5) 0 0; padding-block-start: var(--space-4); border-block-start: 1px solid var(--color-border); }
.material-metadata dt { color: var(--color-text-muted); font-size: var(--text-xs); font-weight: 600; }
.material-metadata dd { margin: 0; overflow-wrap: anywhere; }
.material-keywords { margin-block-start: var(--space-4); color: var(--color-text-muted); font-size: var(--text-sm); }

@media (prefers-reduced-motion: no-preference) {
}


@media (max-width: 58rem) {
  .home-hero__layout { grid-template-columns: minmax(0, 1fr); }
  .home-hero__visual { width: 100%; max-width: 44rem; }
}
@media (max-width: 34rem) {
  .section-nav__link--upload { margin-inline-start: 0; padding-inline: var(--space-3); }
  .home-hero__visual figcaption { padding: var(--space-2); }
}