/* 管理后台（从 /style.css 拆分） */
:root {
  --max-width: 100%;

  --admin-gap: 16px;
  --admin-card-padding: 18px;
}

#admin-panel {
  display: flex;
  flex-direction: column;
  gap: var(--admin-gap);
}

#admin-panel .admin-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  box-shadow: var(--shadow);
}

#admin-panel .admin-tabs a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 14px;
  color: var(--text);
  border: 1px solid transparent;
  background: transparent;
  transition: background 0.15s, border-color 0.15s;
  cursor: grab;
}

#admin-panel .admin-tabs a:hover {
  background: var(--bg);
  border-color: var(--border);
}

#admin-panel .admin-tabs a.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.admin-tab-hidden {
  display: none !important;
}

#admin-panel .admin-subtabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  box-shadow: var(--shadow);
}

#admin-panel .admin-subtabs a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 8px 12px;
  border-radius: var(--radius);
  text-decoration: none;
  font-size: 14px;
  color: var(--text);
  border: 1px solid transparent;
  background: transparent;
  transition: background 0.15s, border-color 0.15s;
  cursor: grab;
}

#admin-panel .admin-subtabs a:hover {
  background: var(--bg);
  border-color: var(--border);
}

#admin-panel .admin-subtabs a.active {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.admin-subtab-hidden {
  display: none !important;
}

.admin-tab-dragging {
  opacity: 0.6;
  transform: scale(0.98);
}

#admin-panel .admin-section {
  margin: 0;
  overflow-x: hidden;
}

.dash-toolbar {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  margin: 4px 0 10px;
}

.dash-kind-tabs {
  display: inline-flex;
  gap: 4px;
  padding: 3px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
}

.dash-pill {
  border: none;
  border-radius: 999px;
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
  background: transparent;
  color: var(--text);
  transition: background 0.15s, color 0.15s;
}

.dash-pill:hover {
  background: rgba(0, 0, 0, 0.04);
}

.dash-pill.active {
  background: var(--accent);
  color: #fff;
}

.dash-search {
  position: relative;
  flex: 1 1 280px;
  max-width: 420px;
}

#dashboard-search {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 14px;
  background: var(--bg);
  color: var(--text);
}

.dash-search-results {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  z-index: 5;
  overflow: hidden;
}

.dash-search-results button {
  width: 100%;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
  padding: 10px 12px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--text);
}

.dash-search-results button:hover {
  background: var(--bg);
}

.dash-search-results .dash-result-meta {
  color: var(--text-light);
  font-size: 12px;
  white-space: nowrap;
}

.dash-split {
  display: grid;
  grid-template-columns: 1.1fr 1.4fr;
  gap: 12px;
  margin: 6px 0 14px;
}

@media (max-width: 900px) {
  .dash-split {
    grid-template-columns: 1fr;
  }
}

.dash-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}

.dash-card-title {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.dash-card-title .dash-link {
  font-size: 12px;
  color: var(--accent);
  text-decoration: none;
  white-space: nowrap;
}

.dash-card-title .dash-link:hover {
  text-decoration: underline;
}

.dash-section-title {
  margin: 10px 0 10px;
  font-size: 13px;
  color: var(--text-light);
}

.dash-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 12px;
}

.dash-stat {
  text-align: center;
  padding: 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.dash-stat-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.dash-stat-label {
  margin-top: 4px;
  font-size: 12px;
  color: var(--text-light);
}

.dash-hot-grid {
  margin-top: 14px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.dash-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.dash-hot-item {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  background: transparent;
  border: none;
  text-align: left;
  cursor: pointer;
  color: var(--text);
  font-size: 14px;
  transition: color 0.15s, transform 0.15s;
}

.dash-hot-item:hover {
  color: var(--accent);
  transform: translateY(-1px);
}

.dash-hot-item.active {
  color: var(--accent);
  font-weight: 700;
}

.dash-hot-item:last-child {
  border-bottom: none;
}

.dash-hot-item .dash-hot-meta {
  color: var(--text-light);
  font-size: 12px;
  white-space: nowrap;
}

.dash-progress-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
}

.dash-progress-bar {
  height: 10px;
  background: rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 8px;
}

.dash-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #8e44ad);
  border-radius: 999px;
  transition: width 520ms cubic-bezier(0.22, 1, 0.36, 1);
}

.dash-fade {
  transition: opacity 180ms ease, transform 180ms ease;
}

.dash-fade.is-switching {
  opacity: 0;
  transform: translateY(6px);
}

.dash-bars {
  display: flex;
  gap: 2px;
  align-items: flex-end;
  height: 64px;
  margin-top: 10px;
}

.dash-bar {
  flex: 1 1 0;
  min-width: 2px;
  background: var(--accent);
  opacity: 0.55;
  border-radius: 4px 4px 0 0;
  height: var(--h, 0%);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 560ms cubic-bezier(0.22, 1, 0.36, 1);
}

.dash-bars.ready .dash-bar {
  transform: scaleY(1);
}

@media (prefers-reduced-motion: reduce) {
  .dash-pill,
  .dash-hot-item,
  .dash-progress-fill,
  .dash-fade,
  .dash-bar {
    transition: none !important;
  }
  .dash-hot-item:hover {
    transform: none;
  }
  .dash-bar {
    transform: none;
  }
}

.admin-section {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--admin-card-padding);
  margin-bottom: var(--admin-gap);
  box-shadow: var(--shadow);
  transition: background 0.3s;
}
.admin-section h3 {
  font-size: 16px;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.form-group { margin-bottom: 12px; }
.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 4px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  background: var(--bg);
  color: var(--text);
  transition: background 0.3s, color 0.3s;
}

.form-group input[type="file"] {
  cursor: pointer;
}

.form-group input[type="file"]::file-selector-button {
  margin-left: 6px;
  margin-right: 10px;
  padding: 8px 14px;
  border: none;
  border-radius: calc(var(--radius) - 2px);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s;
}

.form-group input[type="file"]::file-selector-button:hover {
  background: var(--accent-dark);
}

.form-group input[type="file"]::-webkit-file-upload-button {
  margin-left: 6px;
  margin-right: 10px;
  padding: 8px 14px;
  border: none;
  border-radius: calc(var(--radius) - 2px);
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s;
}

.form-group input[type="file"]::-webkit-file-upload-button:hover {
  background: var(--accent-dark);
}
.form-group textarea { min-height: 200px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

.admin-option-row {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.admin-option-row label {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  cursor: pointer;
  flex: 0 0 auto;
  white-space: nowrap;
}

/* 管理列表 */
.admin-list { list-style: none; }
.admin-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.admin-list li:last-child { border-bottom: none; }
.admin-list .item-info { flex: 1; }
.admin-list .item-title { font-size: 15px; color: var(--text); }
.admin-list .item-meta { font-size: 12px; color: var(--text-light); margin-top: 2px; }
.admin-list .item-actions { display: flex; gap: 6px; }

/* 分类书籍管理：封面网格选择 */
.category-books-grid {
  list-style: none;
  margin: 0;
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
  max-height: 46vh;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(128, 128, 128, 0.04);
}
.category-books-grid li { padding: 0; border-bottom: none; }
.category-books-empty {
  grid-column: 1 / -1;
  padding: 18px 4px;
  font-size: 13px;
  color: var(--text-light);
}

.category-book-card {
  position: relative;
  display: flex;
  flex-direction: column;
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card-bg);
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s, background 0.3s;
  user-select: none;
}
.category-book-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}
.category-book-card:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.category-book-card.is-selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(212, 165, 116, 0.25), 0 6px 18px rgba(0, 0, 0, 0.12);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 25%, transparent), 0 6px 18px rgba(0, 0, 0, 0.12);
}
.category-book-card input[type='checkbox'] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.category-book-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  background: var(--bg);
}
.category-book-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.category-book-cover-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 800;
  color: #fff;
}
.category-book-check {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  opacity: 0;
  transform: scale(0.92);
  transition: opacity 0.12s, transform 0.12s, background 0.12s;
}
.category-book-card.is-selected .category-book-check {
  opacity: 1;
  transform: scale(1);
  background: var(--accent);
}
.category-book-badge {
  position: absolute;
  top: 8px;
  right: 8px;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
}
.category-book-badge-unlisted { background: #8e44ad; }
.category-book-badge-deleted { background: #c0392b; }
.category-book-badge-purging { background: #e67e22; }

.category-book-info {
  padding: 8px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.category-book-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.category-book-meta {
  font-size: 11px;
  color: var(--text-light);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 书籍管理：避免按钮挤压导致信息列过窄 */
#book-list li,
#books-manage-list li {
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-start;
}
#book-list .item-actions,
#books-manage-list .item-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
  margin-left: auto;
}
@media (max-width: 700px) {
  #book-list .item-actions,
  #books-manage-list .item-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

/* 书籍管理：列表美化 */
#book-search {
  width: 100%;
}

#book-list .book-title-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: baseline;
}

#book-list .book-inline-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

#book-list .book-inline-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-right: 4px;
}

#book-list .book-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-light);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.badge-warn {
  border-color: rgba(230, 126, 34, 0.35);
  background: rgba(230, 126, 34, 0.12);
  color: #e67e22;
}

.badge-danger {
  border-color: rgba(231, 76, 60, 0.35);
  background: rgba(231, 76, 60, 0.12);
  color: #e74c3c;
}

.badge-special,
.badge-pinned {
  border-color: rgba(226, 176, 122, 0.45);
  background: rgba(226, 176, 122, 0.16);
  color: var(--text);
}

.badge-gh {
  border-color: rgba(52, 152, 219, 0.35);
  background: rgba(52, 152, 219, 0.12);
  color: #3498db;
}

.badge-source-stats {
  border-color: rgba(155, 89, 182, 0.35);
  background: rgba(155, 89, 182, 0.12);
  color: #9b59b6;
}

.badge-source-mode {
  border-color: rgba(46, 204, 113, 0.35);
  background: rgba(46, 204, 113, 0.12);
  color: #2ecc71;
}

#book-list .book-meta-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.chip {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  white-space: nowrap;
}

.chip-muted {
  color: var(--text-light);
}

.chip-clickable {
  cursor: pointer;
  user-select: none;
}
.chip-clickable:hover {
  opacity: 0.85;
}
.chip-clickable.is-selected {
  border-color: var(--accent);
  background: rgba(226, 176, 122, 0.18);
}

.category-picker {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  align-items: center;
}

.chip-author {
  border-color: rgba(52, 152, 219, 0.28);
  background: rgba(52, 152, 219, 0.10);
}

.chip-chapters {
  border-color: rgba(46, 204, 113, 0.28);
  background: rgba(46, 204, 113, 0.10);
}

.chip-words {
  border-color: rgba(155, 89, 182, 0.28);
  background: rgba(155, 89, 182, 0.10);
}

.chip-source {
  border-color: rgba(241, 196, 15, 0.28);
  background: rgba(241, 196, 15, 0.10);
}

.chip-category {
  border-color: rgba(52, 73, 94, 0.28);
  background: rgba(52, 73, 94, 0.10);
}

.chip-category-special {
  border-color: rgba(226, 176, 122, 0.38);
  background: rgba(226, 176, 122, 0.16);
}

.chip-mark {
  border-color: rgba(149, 165, 166, 0.28);
  background: rgba(149, 165, 166, 0.10);
  color: var(--text-light);
}

.category-title-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.category-marks-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 6px;
}

/* GitHub 小说批量选择 */
.gh-select-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  cursor: pointer;
}
.gh-select-row input[type='checkbox'] {
  margin-top: 2px;
}

/* 书籍编辑弹窗（避免参与网格布局） */
.settings-overlay {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.settings-overlay.active { display: flex; }
.settings-panel {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 600px;
  padding: 20px 24px 28px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
  transition: background 0.3s;
}
.settings-panel h3 {
  font-size: 16px;
  margin: 0 0 16px;
  color: var(--text);
  position: relative;
}
.settings-panel .close-btn {
  position: absolute;
  right: 0;
  top: -2px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-light);
}