/* ==========================================================================
   xnzlzqj — Virtual Document Library Frontend Styles
   Version: 0.7.0
   ========================================================================== */

/* ── Variables ── */
:root {
  --xnz-primary: #2563eb;
  --xnz-primary-dark: #1d4ed8;
  --xnz-primary-light: #dbeafe;
  --xnz-primary-50: #eff6ff;
  --xnz-accent: #f59e0b;
  --xnz-success: #16a34a;
  --xnz-danger: #dc2626;
  --xnz-text: #1e293b;
  --xnz-text-secondary: #64748b;
  --xnz-text-muted: #94a3b8;
  --xnz-border: #e2e8f0;
  --xnz-bg: #f8fafc;
  --xnz-bg-card: #ffffff;
  --xnz-radius: 14px;
  --xnz-radius-sm: 8px;
  --xnz-radius-full: 999px;
  --xnz-shadow: 0 1px 3px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
  --xnz-shadow-lg: 0 10px 30px rgba(0,0,0,.08);
  --xnz-transition: .2s ease;
}

/* ── Library Container ── */
.xnzlzqj-library {
  max-width: 1200px;
  margin: 0 auto;
}

/* ── Toolbar (Search + Summary) ── */
.xnzlzqj-library-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.xnzlzqj-search-form {
  display: flex;
  flex: 1;
  min-width: 240px;
  max-width: 460px;
  position: relative;
}

.xnzlzqj-search-input {
  width: 100%;
  height: 42px;
  padding: 0 90px 0 16px;
  border: 1.5px solid var(--xnz-border);
  border-radius: var(--xnz-radius-full);
  font-size: 14px;
  color: var(--xnz-text);
  background: var(--xnz-bg-card);
  outline: none;
  transition: border-color var(--xnz-transition), box-shadow var(--xnz-transition);
  box-sizing: border-box;
}

.xnzlzqj-search-input:focus {
  border-color: var(--xnz-primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.xnzlzqj-search-input::placeholder {
  color: var(--xnz-text-muted);
}

.xnzlzqj-search-btn {
  position: absolute;
  right: 4px;
  top: 4px;
  height: 34px;
  padding: 0 20px;
  border: none;
  border-radius: var(--xnz-radius-full);
  background: var(--xnz-primary);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--xnz-transition);
}

.xnzlzqj-search-btn:hover {
  background: var(--xnz-primary-dark);
}

.xnzlzqj-search-summary {
  font-size: 13px;
  color: var(--xnz-text-secondary);
  white-space: nowrap;
}

.xnzlzqj-search-summary strong {
  color: var(--xnz-primary);
  font-weight: 700;
}

/* ── Category Navigation ── */
.xnzlzqj-cat-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--xnz-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.xnzlzqj-cat-nav::-webkit-scrollbar {
  display: none;
}

.xnzlzqj-cat-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 16px;
  border-radius: var(--xnz-radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--xnz-text-secondary);
  background: var(--xnz-bg);
  white-space: nowrap;
  text-decoration: none;
  transition: all var(--xnz-transition);
}

.xnzlzqj-cat-link:hover {
  color: var(--xnz-primary);
  background: var(--xnz-primary-light);
}

.xnzlzqj-cat-link.active {
  color: #fff;
  background: var(--xnz-primary);
}

.xnzlzqj-cat-link span {
  font-size: 11px;
  opacity: .7;
}

/* ── Tag Cloud ── */
.xnzlzqj-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.xnzlzqj-tag-cloud a.xnzlzqj-tag,
.xnzlzqj-tag-cloud a {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--xnz-radius-full);
  font-size: 12px;
  color: var(--xnz-text-secondary);
  background: var(--xnz-bg);
  text-decoration: none;
  transition: all var(--xnz-transition);
}

.xnzlzqj-tag-cloud a:hover,
.xnzlzqj-tag-cloud a.xnzlzqj-tag:hover {
  color: var(--xnz-primary);
  background: var(--xnz-primary-light);
}

.xnzlzqj-tag-cloud a.active,
.xnzlzqj-tag-cloud a.xnzlzqj-tag.active {
  color: #fff;
  background: var(--xnz-primary);
}

/* ── Category Nav (standalone shortcode) ── */
.xnzlzqj-category-nav {
  margin-bottom: 16px;
}

.xnzlzqj-category-nav ul {
  list-style: none;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 0;
  margin: 0;
}

.xnzlzqj-category-nav li a {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--xnz-radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--xnz-text-secondary);
  background: var(--xnz-bg);
  text-decoration: none;
  transition: all var(--xnz-transition);
}

.xnzlzqj-category-nav li a:hover {
  color: var(--xnz-primary);
  background: var(--xnz-primary-light);
}

.xnzlzqj-category-nav li a.active {
  color: #fff;
  background: var(--xnz-primary);
}

/* ── Document Grid ── */
.xnzlzqj-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

/* ── Document Card ── */
.xnzlzqj-doc-card {
  background: var(--xnz-bg-card);
  border: 1px solid var(--xnz-border);
  border-radius: var(--xnz-radius);
  overflow: hidden;
  box-shadow: var(--xnz-shadow);
  transition: transform var(--xnz-transition), box-shadow var(--xnz-transition);
}

.xnzlzqj-doc-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--xnz-shadow-lg);
}

.xnzlzqj-doc-card__cover {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(135deg, #e2e8f0 0%, #f1f5f9 100%);
  overflow: hidden;
}

.xnzlzqj-doc-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .3s ease;
}

.xnzlzqj-doc-card:hover .xnzlzqj-doc-card__cover img {
  transform: scale(1.04);
}

/* Badge overlay on cover */
.xnzlzqj-file-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  background: rgba(37,99,235,.85);
  backdrop-filter: blur(4px);
  pointer-events: none;
  letter-spacing: .3px;
}

.xnzlzqj-doc-card__body {
  padding: 16px;
}

.xnzlzqj-doc-card__head {
  margin-bottom: 8px;
}

.xnzlzzj-doc-card__title {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--xnz-text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.xnzlzqj-doc-card__title,
.xnzlzqj-doc-card__title a {
  text-decoration: none;
  color: var(--xnz-text);
  transition: color var(--xnz-transition);
}

.xnzlzqj-doc-card__title a:hover {
  color: var(--xnz-primary);
}

.xnzlzqj-doc-card__chips {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.xnzlzqj-chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.5;
}

.xnzlzqj-chip--cat {
  color: var(--xnz-primary);
  background: var(--xnz-primary-light);
}

.xnzlzqj-doc-card__desc {
  margin: 0 0 12px;
  font-size: 13px;
  color: var(--xnz-text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.xnzlzqj-doc-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--xnz-border);
}

.xnzlzqj-price {
  font-size: 16px;
  font-weight: 700;
  color: var(--xnz-primary);
}

.xnzlzqj-price.is-free {
  color: var(--xnz-success);
  font-size: 14px;
  font-weight: 600;
}

.xnzlzqj-downloads {
  font-size: 12px;
  color: var(--xnz-text-muted);
}

/* ── Pagination ── */
.xnzlzqj-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 20px 0;
}

.xnzlzqj-page-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: var(--xnz-radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--xnz-text-secondary);
  background: var(--xnz-bg-card);
  border: 1px solid var(--xnz-border);
  text-decoration: none;
  transition: all var(--xnz-transition);
}

.xnzlzqj-page-link:hover {
  color: var(--xnz-primary);
  border-color: var(--xnz-primary);
}

.xnzlzqj-page-link.active {
  color: #fff;
  background: var(--xnz-primary);
  border-color: var(--xnz-primary);
}

/* ── Detail Page ── */
.xnzlzqj-detail {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 36px;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
}

.xnzlzqj-detail__media {
  position: sticky;
  top: 80px;
}

.xnzlzzqj-detail__media-suffix {
  margin-top: 14px;
}

.xnzlzqj-detail__preview {
  width: 100%;
  border-radius: var(--xnz-radius);
  box-shadow: var(--xnz-shadow-lg);
  display: block;
  max-height: 720px;
  object-fit: contain;
  background: #f1f5f9;
}

.xnzlzqj-detail__preview-error {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  border-radius: var(--xnz-radius);
  box-shadow: var(--xnz-shadow-lg);
  background: #f8fafc;
}

.xnzlzqj-detail__preview-error svg {
  opacity: .2;
}

.xnzlzqj-detail__meta-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
  padding: 14px;
  background: var(--xnz-bg);
  border-radius: var(--xnz-radius-sm);
}

.xnzlzqj-detail__meta-item {
  text-align: center;
}

.xnzlzqj-detail__meta-item strong {
  display: block;
  font-size: 18px;
  font-weight: 700;
  color: var(--xnz-primary);
}

.xnzlzqj-detail__meta-item span {
  font-size: 12px;
  color: var(--xnz-text-muted);
}

.xnzlzqj-detail__body {
  padding: 8px 0;
}

.xnzlzqj-detail__filename {
  font-size: 13px;
  color: var(--xnz-text-muted);
  margin: 0 0 12px;
}

.xnzlzqj-detail__page-hint {
  text-align: center;
  font-size: 12px;
  color: var(--xnz-text-muted);
  margin: 10px 0 0;
}

.xnzlzqj-detail__subtitle {
  margin: 0 0 4px;
  font-size: 13px;
  font-weight: 500;
  color: var(--xnz-text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}

.xnzlzqj-detail__headline {
  margin: 0 0 16px;
  font-size: 24px;
  font-weight: 700;
  color: var(--xnz-text);
  line-height: 1.35;
}

.xnzlzqj-detail__summary {
  font-size: 14px;
  color: var(--xnz-text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

/* Term list (categories + tags) */
.xnzlzqj-term-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.xnzlzqj-term-list a {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--xnz-radius-full);
  font-size: 12px;
  color: var(--xnz-text-secondary);
  background: var(--xnz-bg);
  text-decoration: none;
  transition: all var(--xnz-transition);
}

.xnzlzqj-term-list a:hover {
  color: var(--xnz-primary);
  background: var(--xnz-primary-light);
}

.xnzlzqj-term-list a.xnz-cat {
  color: var(--xnz-primary);
  background: var(--xnz-primary-light);
}

/* ── Purchase Card ── */
.xnzlzqj-purchase-card {
  background: var(--xnz-bg-card);
  border: 1.5px solid var(--xnz-border);
  border-radius: var(--xnz-radius);
  padding: 24px;
  box-shadow: var(--xnz-shadow);
}

.xnzlzqj-purchase-card__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.xnzlzqj-purchase-card__label {
  font-size: 13px;
  color: var(--xnz-text-muted);
}

.xnzlzqj-purchase-card__price {
  font-size: 28px;
  font-weight: 800;
  color: var(--xnz-primary);
  letter-spacing: -.5px;
}

.xnzlzqj-purchase-card__note {
  font-size: 13px;
  color: var(--xnz-text-secondary);
  margin-bottom: 20px;
}

/* Feature list */
.xnzlzqj-feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}

.xnzlzqj-feature-list li {
  position: relative;
  padding: 6px 0 6px 22px;
  font-size: 13px;
  color: var(--xnz-text-secondary);
  line-height: 1.5;
}

.xnzlzqj-feature-list li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 12px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--xnz-primary-light);
}

.xnzlzqj-feature-list li::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 15px;
  width: 6px;
  height: 8px;
  border-right: 2px solid var(--xnz-primary);
  border-bottom: 2px solid var(--xnz-primary);
  transform: rotate(45deg);
}

/* Buy Button */
.xnzlzqj-buy-btn {
  display: block;
  width: 100%;
  padding: 14px 24px;
  border: none;
  border-radius: var(--xnz-radius-full);
  background: linear-gradient(135deg, var(--xnz-primary) 0%, var(--xnz-primary-dark) 100%);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity var(--xnz-transition), transform var(--xnz-transition);
  box-shadow: 0 4px 14px rgba(37,99,235,.3);
  appearance: none;
}

.xnzlzqj-buy-btn:hover {
  opacity: .92;
  transform: translateY(-1px);
}

.xnzlzqj-buy-btn:active {
  transform: translateY(0);
}

.xnzlzqj-buy-btn:disabled {
  opacity: .6;
  cursor: wait;
  transform: none;
}

.xnzlzqj-action-tip {
  margin-top: 12px;
  font-size: 13px;
  color: var(--xnz-text-secondary);
  text-align: center;
  min-height: 20px;
}

.xnzlzqj-action-tip.is-error {
  color: var(--xnz-danger);
}

/* ── Empty State ── */
.xnzlzqj-empty {
  padding: 48px 24px;
  border-radius: var(--xnz-radius);
  background: var(--xnz-primary-50);
  color: var(--xnz-text-secondary);
  text-align: center;
  font-size: 14px;
}

/* ── Legacy card (from templates/document-card.php) ── */
.xnzlzqj-card {
  background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}

.xnzlzqj-card__cover {
  aspect-ratio: 4 / 3;
  background: #e2e8f0;
}

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

.xnzlzqj-card__body {
  padding: 18px;
}

.xnzlzqj-card__meta {
  display: flex;
  justify-content: space-between;
  color: #475569;
  font-size: 13px;
  margin-top: 10px;
}

/* ── Upload CTA ── */
.xnzlzqj-upload-cta {
  padding: 16px 20px;
  background: var(--xnz-primary-50);
  border: 1px dashed var(--xnz-primary);
  border-radius: var(--xnz-radius);
}

.xnzlzqj-upload-cta p {
  margin: 0;
}

.xnzlzqj-upload-cta a.button {
  display: inline-block;
  margin-left: 8px;
}

/* ── Responsive ── */
@media (max-width: 860px) {
  .xnzlzqj-detail {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .xnzlzqj-detail__media {
    position: static;
  }

  .xnzlzqj-detail__preview {
    max-height: 400px;
  }

  .xnzlzqj-grid {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
  }

  .xnzlzqj-library-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .xnzlzqj-search-form {
    max-width: 100%;
  }

  .xnzlzqj-purchase-card__price {
    font-size: 24px;
  }
}

@media (max-width: 480px) {
  .xnzlzqj-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .xnzlzqj-doc-card__body {
    padding: 10px;
  }

  .xnzlzqj-doc-card__footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}