:root {
  --bg-primary: #FFF8F0;
  --bg-secondary: #F5EDE3;
  --bg-card: #FFFFFF;
  --color-primary: #8B7355;
  --color-accent: #C4956A;
  --text-primary: #3D3229;
  --text-secondary: #8B8178;
  --border-color: #E8DDD0;
  --danger: #D4654A;
  --success: #6AAA7B;
  --shadow: 0 2px 12px rgba(139,115,85,0.08);
  --shadow-hover: 0 4px 20px rgba(139,115,85,0.15);
  --radius: 8px;
  --sidebar-width: 240px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.6;
}

.admin-layout {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-card);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
}

.sidebar-brand {
  padding: 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 600;
}

.sidebar-brand span:first-child { font-size: 20px; }

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.2s;
  margin-bottom: 4px;
}

.nav-item:hover {
  background: var(--bg-secondary);
}

.nav-item.active {
  background: var(--color-primary);
  color: white;
}

.nav-item span { font-size: 18px; }

.sidebar-footer {
  padding: 16px;
  border-top: 1px solid var(--border-color);
}

.sidebar-footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

.sidebar-footer a:hover { color: var(--color-primary); }

/* 主内容区 */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 24px 32px;
}

/* 顶部栏 */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-title {
  font-size: 24px;
  font-weight: 600;
}

.article-count {
  color: var(--text-secondary);
  font-size: 13px;
}

.topbar-right {
  display: flex;
  gap: 12px;
}

/* 工具栏 */
.toolbar {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.search-box { flex: 1; min-width: 200px; }
.search-box input { width: 100%; }

/* 按钮 */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover { background: var(--color-accent); }

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover { background: var(--border-color); }

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover { background: #c55a42; }

.btn-lg { padding: 12px 24px; font-size: 15px; }

/* 表单 */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
}
.form-group .required { color: var(--danger); }

.form-row {
  display: flex;
  gap: 16px;
}

.form-row .form-group { flex: 1; }

.input, .select, .textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  background: var(--bg-card);
  font-size: 14px;
  transition: border-color 0.2s;
}

.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.input-lg { font-size: 16px; padding: 12px; }
.textarea { min-height: 100px; resize: vertical; }
.textarea.editor { font-family: monospace; }

/* 表格 */
.table-wrapper {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  background: var(--bg-secondary);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
}

.table tr:last-child td { border-bottom: none; }
.table tr:hover { background: var(--bg-primary); }

.table th:first-child,
.table td:first-child {
  padding-left: 20px;
}

/* 状态标签 */
.status-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.status-published {
  background: #d4edda;
  color: #155724;
}

.status-draft {
  background: #fff3cd;
  color: #856404;
}

.status-archived {
  background: #f8d7da;
  color: #721c24;
}

/* 分类标签 */
.category-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 12px;
  background: var(--bg-secondary);
  color: var(--color-primary);
}

/* 标签 */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tag {
  display: inline-block;
  padding: 2px 8px;
  background: var(--bg-secondary);
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* 缩略图 */
.thumb-cell {
  width: 60px;
  height: 40px;
  background: var(--bg-secondary);
  border-radius: 4px;
  overflow: hidden;
}

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

/* 操作按钮 */
.action-btns {
  display: flex;
  gap: 8px;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

.btn-icon {
  padding: 6px;
  font-size: 16px;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
}

.pagination button {
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: var(--radius);
  cursor: pointer;
}

.pagination button.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 页面切换 */
.page.hidden { display: none; }

/* AI提取页 */
.extract-container {
  max-width: 800px;
}

.extract-card {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.extract-card h2 {
  margin-bottom: 8px;
}

.extract-desc {
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.extract-result {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 24px;
  border: 2px solid var(--color-accent);
}

.extract-result h3 {
  margin-bottom: 16px;
  color: var(--success);
}

.result-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
}

.thumbnail-preview {
  margin-top: 8px;
}

.thumbnail-preview img {
  max-width: 200px;
  max-height: 120px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

/* 提取历史 */
.extract-history {
  background: var(--bg-card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.extract-history h3 {
  margin-bottom: 16px;
}

.history-item {
  padding: 12px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.history-url {
  color: var(--text-secondary);
  font-size: 13px;
  max-width: 300px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-status {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 4px;
}

.history-status.completed {
  background: #d4edda;
  color: #155724;
}

.history-status.pending,
.history-status.processing {
  background: #fff3cd;
  color: #856404;
}

.history-status.failed {
  background: #f8d7da;
  color: #721c24;
}

/* 编辑页 */
.edit-container {
  background: var(--bg-card);
  padding: 32px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  max-width: 900px;
}

.edit-actions {
  display: flex;
  gap: 12px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

/* 弹窗 */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden { display: none; }

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
}

.modal-content {
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  position: relative;
  min-width: 320px;
}

.modal-content h3 {
  margin-bottom: 12px;
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
}

/* Toast */
.toast {
  position: fixed;
  top: 24px;
  right: 24px;
  padding: 12px 24px;
  border-radius: var(--radius);
  background: var(--bg-card);
  box-shadow: var(--shadow-hover);
  z-index: 2000;
  animation: slideIn 0.3s ease;
}

.toast.hidden { display: none; }

.toast.success {
  border-left: 4px solid var(--success);
}

.toast.error {
  border-left: 4px solid var(--danger);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* 响应式 */
@media (max-width: 768px) {
  .sidebar {
    width: 100%;
    position: relative;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .admin-layout {
    flex-direction: column;
  }
}