/* Library pages — extends theme.css design system */

.library-page {
  min-height: 100vh;
}

/* ── Hero ────────────────────────────────────────────────── */

.library-hero {
  background: var(--bg);
  padding: 96px 32px 56px;
  border-bottom: 1px solid var(--border);
}
.library-hero-inner {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  align-items: flex-start;
  gap: 48px;
}
.library-hero-text { flex: 1; }
.library-hero h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}
.library-hero p {
  font-size: 1.05rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 24px;
  max-width: 520px;
}
.library-hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 10px 22px;
  border-radius: 2px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: background 0.15s;
}
.btn-primary:hover { background: var(--accent-light); }
.btn-secondary {
  border: 1px solid var(--border);
  color: var(--fg);
  padding: 10px 22px;
  border-radius: 2px;
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: border-color 0.15s;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

.library-stats {
  font-size: 0.85rem;
  color: var(--muted);
}
.library-hero-art {
  flex: 0 0 280px;
  display: none;
}
@media (min-width: 800px) {
  .library-hero-art { display: block; }
  .library-hero-inner { gap: 64px; }
}

/* ── Content area ────────────────────────────────────────── */

.library-content {
  max-width: 860px;
  margin: 0 auto;
  padding: 48px 32px 80px;
}

/* ── Search bar ──────────────────────────────────────────── */

.library-search-bar {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px;
  margin-bottom: 24px;
}
.search-form { display: flex; flex-direction: column; gap: 16px; }
.search-input-wrap {
  display: flex;
  gap: 8px;
}
.search-input {
  flex: 1;
  padding: 10px 14px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
}
.search-input:focus {
  outline: none;
  border-color: var(--accent);
}
.search-btn {
  padding: 10px 20px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 2px;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}
.filter-group { display: flex; align-items: center; gap: 8px; }
.filter-label { font-size: 0.8rem; color: var(--muted); font-weight: 500; white-space: nowrap; }
.filter-input {
  padding: 6px 10px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  width: 140px;
}
.filter-select {
  padding: 6px 10px;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  cursor: pointer;
}
.year-range { gap: 4px; }
.year-input { width: 80px !important; }

/* ── Category chips ─────────────────────────────────────── */

.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.cat-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--muted);
  background: var(--card-bg);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
  user-select: none;
}
.cat-chip:hover { border-color: var(--accent); color: var(--accent); }
.cat-chip.active {
  background: rgba(27, 67, 50, 0.1);
  border-color: var(--accent);
  color: var(--accent);
}
.cat-chip.selectable { cursor: pointer; }
.cat-chip.selectable input:checked + * { background: var(--accent); color: #fff; }

/* ── Active filters ──────────────────────────────────────── */

.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 20px;
}
.filter-tag {
  background: rgba(27, 67, 50, 0.08);
  color: var(--accent);
  padding: 4px 10px;
  font-size: 0.82rem;
  border-radius: 2px;
}
.clear-filters {
  font-size: 0.82rem;
  color: var(--muted);
  text-decoration: none;
  margin-left: 4px;
}
.clear-filters:hover { color: var(--fg); }

/* ── Source grid ─────────────────────────────────────────── */

.sources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-bottom: 48px;
}
.source-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.source-card:hover {
  border-color: var(--accent);
  box-shadow: 0 2px 12px rgba(27, 67, 50, 0.08);
}
.source-card:hover .source-title { color: var(--accent); }
.source-icon {
  color: var(--accent);
  opacity: 0.4;
}
.source-icon svg { width: 28px; height: 28px; }
.source-info { flex: 1; }
.source-title {
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--fg);
  line-height: 1.4;
  margin-bottom: 4px;
  transition: color 0.15s;
}
.source-author {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 6px;
}
.source-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.meta-year {
  font-size: 0.78rem;
  color: var(--muted);
}
.meta-cats {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 500;
}
.source-stats {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
.download-count {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ── Empty state ─────────────────────────────────────────── */

.empty-state {
  text-align: center;
  padding: 64px 32px;
  color: var(--muted);
}
.empty-state h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  color: var(--fg);
  margin-bottom: 12px;
}
.empty-state a { color: var(--accent); }

/* ── Pagination ───────────────────────────────────────────── */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.page-btn {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 2px;
  color: var(--fg);
  text-decoration: none;
  font-size: 0.9rem;
  transition: border-color 0.15s;
}
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-info { font-size: 0.85rem; color: var(--muted); }

/* ── Categories section ──────────────────────────────────── */

.categories-section {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}
.categories-section h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  margin-bottom: 24px;
  color: var(--fg);
}
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}
.category-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 16px;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 0.15s;
}
.category-card:hover { border-color: var(--accent); }
.cat-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--fg);
}
.cat-desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ── Upload page ─────────────────────────────────────────── */

.upload-page .library-hero { padding-bottom: 32px; }
.upload-rules {
  background: rgba(27, 67, 50, 0.05);
  border: 1px solid rgba(27, 67, 50, 0.2);
  border-radius: 4px;
  padding: 20px 24px;
  margin-top: 16px;
}
.upload-rules h3 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--accent);
}
.upload-rules ul {
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.upload-rules li { font-size: 0.88rem; color: var(--muted); line-height: 1.5; }
.upload-rules li strong { color: var(--fg); }

.upload-container { max-width: 640px; }
.upload-error {
  background: rgba(168, 93, 59, 0.08);
  border: 1px solid var(--warm);
  border-radius: 4px;
  padding: 20px 24px;
  margin-bottom: 24px;
}
.upload-error h2 { font-size: 1rem; color: var(--warm); margin-bottom: 8px; }
.upload-error p { font-size: 0.9rem; color: var(--muted); }

.upload-form { display: flex; flex-direction: column; gap: 32px; }
.upload-fieldset {
  border: none;
  padding: 0;
  margin: 0;
}
.upload-fieldset legend {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  display: block;
  width: 100%;
}
.field-hint {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 12px;
}
.required { color: var(--warm); }
.optional { color: var(--muted); font-weight: 400; font-size: 0.85em; }

/* File drop zone */
.file-drop-zone {
  border: 2px dashed var(--border);
  border-radius: 4px;
  padding: 48px 32px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  background: var(--card-bg);
}
.file-drop-zone:hover,
.file-drop-zone.drag-over {
  border-color: var(--accent);
  background: rgba(27, 67, 50, 0.03);
}
.file-drop-content p { color: var(--muted); font-size: 0.95rem; }
.file-drop-content p strong { color: var(--fg); }
.file-hint { font-size: 0.8rem !important; margin-top: 4px; }
.file-input-hidden { display: none; }

.file-progress { margin-top: 16px; text-align: left; }
.file-name { font-size: 0.9rem; font-weight: 600; margin-bottom: 8px; }
.progress-bar {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 6px;
}
.progress-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.3s;
  width: 0%;
}
.file-info { font-size: 0.8rem; color: var(--muted); }

/* Form fields */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--fg);
}
.form-group input,
.form-group textarea {
  padding: 10px 14px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
  line-height: 1.5;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.category-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}
.new-category-wrap { margin-top: 16px; }
.new-category-input { display: flex; gap: 8px; }
.new-category-input input { flex: 1; }
.btn-small {
  padding: 8px 16px;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 2px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}
#new-category-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }

.form-actions { display: flex; justify-content: flex-end; }
.btn-submit {
  background: var(--accent);
  color: #fff;
  padding: 12px 32px;
  border: none;
  border-radius: 2px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s;
}
.btn-submit:hover:not(:disabled) { background: var(--accent-light); }
.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; }

/* ── Source detail ────────────────────────────────────────── */

.source-detail { max-width: 680px; }
.breadcrumb {
  margin-bottom: 32px;
}
.breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
}
.breadcrumb a:hover { color: var(--fg); }

.source-header {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 24px;
}
.source-icon-lg {
  flex: 0 0 56px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(27, 67, 50, 0.08);
  border-radius: 4px;
  color: var(--accent);
}
.source-icon-lg svg { width: 28px; height: 28px; }
.source-title-block { flex: 1; }
.source-title-block h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--fg);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.source-author-lg {
  font-size: 1rem;
  color: var(--muted);
  font-style: italic;
  margin-bottom: 4px;
}
.source-year {
  font-size: 0.85rem;
  color: var(--muted);
}

.duplicate-notice {
  background: rgba(27, 67, 50, 0.06);
  border: 1px solid rgba(27, 67, 50, 0.25);
  border-radius: 4px;
  padding: 12px 16px;
  font-size: 0.88rem;
  color: var(--accent);
  margin-bottom: 20px;
}

.source-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}
.label-chip {
  padding: 4px 10px;
  font-size: 0.8rem;
  border-radius: 2px;
  text-decoration: none;
}
.label-chip.field {
  background: rgba(27, 67, 50, 0.1);
  color: var(--accent);
  font-weight: 500;
}
.label-chip.field:hover { background: rgba(27, 67, 50, 0.15); }
.label-chip.tag {
  background: var(--card-bg);
  color: var(--muted);
  border: 1px solid var(--border);
}

.source-download-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: 32px;
}
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff !important;
  padding: 12px 24px;
  border-radius: 2px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background 0.15s;
}
.btn-download:hover { background: var(--accent-light); }
.download-meta { font-size: 0.85rem; color: var(--muted); }
.uploader-credit { font-size: 0.82rem; color: var(--muted); font-style: italic; }

.source-description {
  margin-bottom: 32px;
}
.source-description h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--fg);
}
.source-description p {
  font-size: 0.97rem;
  color: var(--muted);
  line-height: 1.7;
}

.source-threads {
  margin-bottom: 32px;
}
.source-threads h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--fg);
}
.thread-list { display: flex; flex-direction: column; gap: 0; }
.thread-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: color 0.15s;
}
.thread-item:first-child { border-top: 1px solid var(--border); }
.thread-item:hover .thread-title { color: var(--accent); }
.thread-title { font-size: 0.93rem; font-weight: 500; }
.thread-discipline {
  font-size: 0.78rem;
  color: var(--muted);
  white-space: nowrap;
}
.no-threads {
  font-size: 0.9rem;
  color: var(--muted);
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-align: center;
}
.no-threads a { color: var(--accent); }

.link-thread-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 20px;
  margin-bottom: 32px;
}
.link-thread-form h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.link-thread-form form { display: flex; gap: 8px; }
.link-thread-form input {
  flex: 1;
  padding: 8px 12px;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--bg);
  color: var(--fg);
  font-family: inherit;
}
.form-hint { font-size: 0.78rem; color: var(--muted); margin-top: 6px; }

.source-meta-table h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--fg);
}
.source-meta-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.source-meta-table tr {
  border-bottom: 1px solid var(--border);
}
.source-meta-table tr:first-child { border-top: 1px solid var(--border); }
.source-meta-table th {
  text-align: left;
  padding: 10px 12px;
  color: var(--muted);
  font-weight: 500;
  width: 160px;
  vertical-align: top;
}
.source-meta-table td { padding: 10px 12px; color: var(--fg); }

.source-actions-bottom {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

/* ── Mobile ──────────────────────────────────────────────── */

@media (max-width: 640px) {
  .library-hero { padding: 72px 20px 40px; }
  .library-content { padding: 32px 20px 60px; }
  .form-row { grid-template-columns: 1fr; }
  .sources-grid { grid-template-columns: 1fr; }
  .source-header { flex-direction: column; }
  .link-thread-form form { flex-direction: column; }
  .filter-row { flex-direction: column; align-items: flex-start; }
  .filter-input, .filter-select { width: 100%; }
}