/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #fafaf8;
  --color-surface: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #595959;
  --color-accent: #8b4513;
  --color-accent-light: #d4a574;
  --color-border: #e0ddd8;
  --color-tag-bg: #f0ece4;
  --font-body: "Georgia", "Times New Roman", serif;
  --font-heading: "Helvetica Neue", "Arial", sans-serif;
  --max-width: 1200px;
  --radius: 4px;
}

html {
  font-size: 16px;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  top: -9999px;
  left: 1rem;
  z-index: 9999;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  line-height: 1.3;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* === Header === */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  white-space: nowrap;
}
.site-title:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.main-nav {
  display: flex;
  gap: 1rem;
  flex: 1;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
}
.nav-link:hover, .nav-link.active {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom-color: var(--color-accent);
}

.lang-toggle {
  display: flex;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
}

.lang-link {
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius);
  color: var(--color-text-muted);
}
.lang-link.active {
  background: var(--color-accent);
  color: white;
}
.lang-link:hover {
  text-decoration: none;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
}

/* === Main === */
.main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  width: 100%;
}

/* === Hero === */
.hero {
  text-align: center;
  padding: 2rem 0 3rem;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 auto 2rem;
}

.stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 2rem;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* === Sections === */
.section {
  margin-bottom: 3rem;
}

.section h1 {
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.section h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.section-footer {
  text-align: center;
  margin-top: 1.5rem;
}

/* === Prose / Page === */
.page-prose {
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.prose-content p {
  margin-bottom: 1.25rem;
  line-height: 1.75;
}

/* === About Hero === */
.about-hero {
  margin: -2rem -1.5rem 2rem;
}

.about-hero picture {
  display: block;
}

.about-hero img {
  width: 100%;
  height: auto;
  display: block;
}

@media (max-width: 640px) {
  .about-hero {
    margin: -2rem -1.5rem 1.5rem;
  }
}

/* === Book Grid === */
.book-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* === Book Card === */
.book-card a {
  display: block;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}
@media (prefers-reduced-motion: no-preference) {
  .book-card a {
    transition: box-shadow 0.2s, transform 0.2s;
  }
}
.book-card a:hover {
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.book-cover {
  aspect-ratio: 2 / 3;
  overflow: hidden;
  background: var(--color-tag-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.book-info {
  padding: 0.75rem;
}

.book-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 0.25rem;
}

.book-author {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.book-year {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* === Browse Cards === */
.browse-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.browse-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
}
@media (prefers-reduced-motion: no-preference) {
  .browse-card {
    transition: border-color 0.2s;
  }
}
.browse-card:hover {
  text-decoration: none;
  border-color: var(--color-accent);
}

.browse-count {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}

.browse-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* === Single Item === */
.single-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.single-cover img {
  width: 100%;
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.single-content h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.single-authors {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.single-abstract {
  margin-top: 2rem;
}

.single-abstract h2 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.single-subjects {
  margin-top: 1.5rem;
}

.single-subjects h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.single-nav {
  margin: 2rem 0;
}

/* === Metadata Table === */
.metadata-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.metadata-table th,
.metadata-table td {
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.metadata-table th {
  font-family: var(--font-heading);
  font-weight: 600;
  width: 120px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* === Tags === */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: var(--color-tag-bg);
  border-radius: var(--radius);
  font-size: 0.8rem;
  color: var(--color-text);
}
.tag:hover {
  text-decoration: none;
  background: var(--color-accent-light);
  color: white;
}

/* === Taxonomy List === */
.taxonomy-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.taxonomy-list li {
  display: block;
}

.taxonomy-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
  padding: 0.6rem 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  font-size: 0.9rem;
  box-sizing: border-box;
}
.taxonomy-item:hover {
  text-decoration: none;
  border-color: var(--color-accent);
}

.taxonomy-count {
  background: var(--color-tag-bg);
  padding: 0.1rem 0.5rem;
  border-radius: var(--radius);
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.taxonomy-count-label {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* === Button === */
.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  background: var(--color-accent);
  color: white;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: 0.9rem;
}
.btn:hover {
  text-decoration: none;
  opacity: 0.9;
}

/* === Pagination === */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
  list-style: none;
  font-family: var(--font-heading);
}

.page-item a,
.page-item span {
  display: inline-block;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  color: var(--color-text);
}
.page-item.active span {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}
.page-item a:hover {
  text-decoration: none;
  border-color: var(--color-accent);
}

/* === Footer === */
.site-footer {
  background: var(--color-text);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
  color: #e8e4dd;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.5rem;
  font-size: 0.85rem;
  color: #e8e4dd;
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
}

.footer-left {
  display: flex;
  flex-direction: column;
}

.footer-right {
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
}

/* Secondary pages nav: left-aligned, horizontal */
.footer-secondary-nav {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

/* Site title line */
.footer-title {
  text-align: center;
  margin: 0;
  padding: 0 1.5rem 1rem;
}

.footer-flags-credit {
  text-align: left;
  margin: 0;
  font-size: 0.8rem;
  color: #b0a99e;
  max-width: 18rem;
}

@media (max-width: 600px) {
  .footer-inner {
    align-items: flex-start;
    gap: 0.75rem;
  }
  .footer-right {
    flex-shrink: 1;
  }
  .footer-flags-credit {
    max-width: 11rem;
  }
}

.footer-nav-link {
  color: #b0a99e;
  text-decoration: none;
  font-size: 0.85rem;
}

.footer-nav-link:hover,
.footer-nav-link.active {
  color: var(--color-accent-light);
  text-decoration: underline;
}

/* === Search (Pagefind overrides) === */
.search-container {
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* === Related === */
.related {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

/* === Catalogue App === */
.catalogue-toolbar {
  display: flex;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.toolbar-search {
  flex: 1;
  min-width: 200px;
}

.toolbar-search input {
  width: 100%;
  padding: 0.6rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: var(--font-body);
}
.toolbar-search input:focus {
  border-color: var(--color-accent);
}

.toolbar-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.results-count {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.display-toggle {
  display: flex;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.toggle-btn {
  background: var(--color-surface);
  border: none;
  padding: 0.4rem 0.6rem;
  cursor: pointer;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
}
.toggle-btn:not(:last-child) {
  border-right: 1px solid var(--color-border);
}
.toggle-btn.active {
  background: var(--color-accent);
  color: white;
}

.btn-sm {
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
}

.filter-toggle-btn {
  display: none;
}

.filter-close-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-text);
  padding: 0 0.25rem;
  margin-left: auto;
  margin-right: 0.5rem;
}

/* === Active Filter Chips === */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
  min-height: 0;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  background: var(--color-accent);
  color: white;
  border: none;
  border-radius: 999px;
  font-size: 0.8rem;
  font-family: var(--font-heading);
  cursor: pointer;
}
.filter-chip:hover {
  opacity: 0.8;
}

/* === Catalogue Layout === */
.catalogue-layout {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 1.5rem;
  align-items: start;
}

/* === Filter Sidebar === */
.filter-sidebar {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem;
  position: sticky;
  top: 60px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
}

.filter-sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  font-family: var(--font-heading);
}

.clear-all-btn {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 0.8rem;
  cursor: pointer;
  font-family: var(--font-heading);
}
.clear-all-btn:hover {
  text-decoration: underline;
}

.filter-group {
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.75rem;
}
.filter-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
}

.filter-group-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.25rem 0;
  user-select: none;
}

.caret {
  font-size: 0.7rem;
}
@media (prefers-reduced-motion: no-preference) {
  .caret {
    transition: transform 0.2s;
  }
}

.filter-group.collapsed .caret {
  transform: rotate(-90deg);
}

.filter-group.collapsed .filter-group-body {
  display: none;
}

.filter-group-body {
  margin-top: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.15rem 0;
  font-size: 0.85rem;
  cursor: pointer;
}

.filter-checkbox input {
  margin: 0;
  cursor: pointer;
}

.filter-count {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
}

.filter-dropdown-search {
  width: 100%;
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.8rem;
  margin-bottom: 0.4rem;
}
.filter-dropdown-search:focus {
  border-color: var(--color-accent);
}

.filter-dropdown-list {
  max-height: 160px;
  overflow-y: auto;
}

.filter-dropdown-item {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 0.25rem 0.4rem;
  font-size: 0.8rem;
  cursor: pointer;
  border-radius: 2px;
  font-family: var(--font-body);
}
.filter-dropdown-item:hover {
  background: var(--color-tag-bg);
}

/* === Table View === */
.table-wrapper {
  overflow-x: auto;
}

.catalogue-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.catalogue-table th {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.8rem;
  text-align: left;
  padding: 0.6rem 0.5rem;
  border-bottom: 2px solid var(--color-border);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  color: var(--color-text-muted);
  position: sticky;
  top: 0;
  background: var(--color-bg);
}
.catalogue-table th:hover {
  color: var(--color-accent);
}

.catalogue-table td {
  padding: 0.5rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

.catalogue-table tbody tr {
  cursor: pointer;
}
.catalogue-table tbody tr:hover {
  background: var(--color-tag-bg);
}

.catalogue-table td:first-child {
  max-width: 300px;
}

.catalogue-table td a {
  color: var(--color-text);
  font-weight: 500;
}

/* === Catalogue Pagination === */
.catalogue-pagination {
  display: flex;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 2rem;
  font-family: var(--font-heading);
}

.catalogue-pagination button {
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font-heading);
}
.catalogue-pagination button:hover {
  border-color: var(--color-accent);
}
.catalogue-pagination button.active {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

/* === Loading / No Results === */
.loading, .no-results {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* === Responsive === */
@media (max-width: 900px) {
  .book-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .browse-links {
    grid-template-columns: repeat(2, 1fr);
  }

  .taxonomy-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .single-layout {
    grid-template-columns: 220px 1fr;
  }

  /* Catalogue app: hide tablet-only columns */
  .hide-tablet {
    display: none;
  }
}

@media (max-width: 640px) {
  .book-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .browse-links {
    grid-template-columns: 1fr 1fr;
  }

  .taxonomy-list {
    grid-template-columns: 1fr;
  }

  .single-layout {
    grid-template-columns: 1fr;
  }

  .single-cover {
    max-width: 250px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .stats {
    gap: 1.5rem;
  }

  .stat-number {
    font-size: 1.25rem;
  }

  /* Mobile nav */
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 1rem 1.5rem;
    gap: 0.5rem;
  }
  .main-nav.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: flex;
    margin-left: auto;
  }

  /* Language pill toggle on portrait phones */
  .lang-toggle {
    order: -1;
    gap: 0;
    border: 1.5px solid var(--color-accent);
    border-radius: 999px;
    overflow: hidden;
    align-items: stretch;
  }
  .lang-toggle .lang-link {
    font-size: 0;          /* hide full language name */
    padding: 0.25rem 0.65rem;
    border-radius: 0;
    color: var(--color-accent);
    background: transparent;
  }
  .lang-toggle .lang-link::before {
    content: attr(data-short);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
  }
  .lang-toggle .lang-link.active {
    background: var(--color-accent);
    color: #fff;
  }

  /* Catalogue app: sidebar becomes off-canvas overlay */
  .catalogue-layout {
    grid-template-columns: 1fr;
  }

  .filter-sidebar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 200;
    border-radius: 0;
    max-height: 100vh;
    padding: 1.5rem;
  }
  .filter-sidebar.open {
    display: block;
  }

  .filter-toggle-btn {
    display: inline-block;
  }

  .filter-close-btn {
    display: inline-block;
  }

  /* Hide mobile columns in table view */
  .hide-mobile {
    display: none;
  }

  .catalogue-table {
    font-size: 0.8rem;
  }
}