/* ==========================================================================
   Daohang - Design System
   1. 设计变量与基础
   2. 通用组件（卡片 / 按钮 / 表单 / 表格 / 分页 / 徽章 / 提示）
   3. 前台样式
   4. 后台样式
   5. 响应式
   ========================================================================== */

/* ============ 1. 设计变量与基础 ============ */
:root {
  --dh-primary: #3b82f6;
  --dh-primary-rgb: 59, 130, 246;
  --dh-primary-dark: #306bca;
  --dh-primary-light: #669ef8;
  --dh-primary-soft: rgba(59, 130, 246, 0.1);
  --dh-accent: #f43f5e;
  --dh-accent-soft: rgba(244, 63, 94, 0.1);

  --dh-bg: #f6f7fb;
  --dh-surface: #ffffff;
  --dh-border: #e9edf3;
  --dh-text: #1f2937;
  --dh-text-muted: #6b7280;

  --dh-radius-sm: 8px;
  --dh-radius: 12px;
  --dh-radius-lg: 16px;

  --dh-shadow-xs: 0 1px 2px rgba(16, 24, 40, 0.04);
  --dh-shadow-sm: 0 2px 8px rgba(16, 24, 40, 0.06);
  --dh-shadow-md: 0 8px 24px rgba(16, 24, 40, 0.08);
  --dh-shadow-lg: 0 16px 40px rgba(16, 24, 40, 0.12);

  --dh-transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
  scroll-behavior: smooth;
}

@media (min-width: 768px) {
  html {
    font-size: 15px;
  }
}

body {
  margin-bottom: 0;
  background-color: var(--dh-bg);
  color: var(--dh-text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "微软雅黑", sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: #d4d9e2;
  border: 3px solid transparent;
  border-radius: 999px;
  background-clip: content-box;
}

::-webkit-scrollbar-thumb:hover {
  background: #b6bdc9;
  background-clip: content-box;
}

/* Bootstrap 主题变量覆盖 */
.btn-primary,
.bg-primary {
  --bs-btn-bg: var(--dh-primary);
  --bs-btn-border-color: var(--dh-primary);
  --bs-btn-hover-bg: var(--dh-primary-dark);
  --bs-btn-hover-border-color: var(--dh-primary-dark);
  --bs-btn-active-bg: var(--dh-primary-dark);
  --bs-btn-active-border-color: var(--dh-primary-dark);
  background-color: var(--dh-primary);
  border-color: var(--dh-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: var(--dh-primary-dark);
  border-color: var(--dh-primary-dark);
}

.btn-outline-primary {
  --bs-btn-color: var(--dh-primary);
  --bs-btn-border-color: var(--dh-primary);
  --bs-btn-hover-bg: var(--dh-primary);
  --bs-btn-hover-border-color: var(--dh-primary);
  --bs-btn-active-bg: var(--dh-primary);
  --bs-btn-active-border-color: var(--dh-primary);
}

.text-primary {
  color: var(--dh-primary) !important;
}

/* ============ 2. 通用组件 ============ */

/* 按钮 */
.btn {
  border-radius: var(--dh-radius-sm);
  font-weight: 500;
  transition: all var(--dh-transition);
  white-space: nowrap;
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.18rem var(--dh-primary-soft);
}

.btn-primary {
  box-shadow: 0 2px 8px rgba(var(--dh-primary-rgb), 0.28);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(var(--dh-primary-rgb), 0.34);
}

.btn-light {
  border-radius: var(--dh-radius-sm);
}

.btn-sm {
  border-radius: 6px;
}

/* 卡片 */
.card {
  border: 1px solid var(--dh-border);
  border-radius: var(--dh-radius);
  background-color: var(--dh-surface);
}

.card.shadow-sm {
  box-shadow: var(--dh-shadow-xs) !important;
  border-radius: var(--dh-radius);
  transition: box-shadow var(--dh-transition), transform var(--dh-transition);
}

.card.shadow-sm:hover {
  box-shadow: var(--dh-shadow-sm) !important;
}

.card-header {
  background-color: #fbfcfe;
  border-bottom: 1px solid var(--dh-border);
  padding: 0.85rem 1.15rem;
  font-weight: 600;
  color: var(--dh-text);
}

.card-header:first-child {
  border-radius: var(--dh-radius) var(--dh-radius) 0 0;
}

.card-footer {
  background-color: #fbfcfe;
  border-top: 1px solid var(--dh-border);
}

/* 表单 */
.form-control,
.form-select {
  border: 1px solid #e2e6ee;
  border-radius: var(--dh-radius-sm);
  padding: 0.5rem 0.75rem;
  transition: all var(--dh-transition);
}

.form-control:hover,
.form-select:hover {
  border-color: #cfd6e4;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--dh-primary-light);
  box-shadow: 0 0 0 0.18rem var(--dh-primary-soft);
}

.form-label {
  font-weight: 500;
  color: #4b5563;
  margin-bottom: 0.35rem;
  font-size: 0.875rem;
}

.form-check-input:checked {
  background-color: var(--dh-primary);
  border-color: var(--dh-primary);
}

.input-group-text {
  border-color: #e2e6ee;
  background-color: #f8fafc;
  color: var(--dh-text-muted);
  border-radius: var(--dh-radius-sm);
}

/* 表格 */
.table {
  --bs-table-hover-bg: #f8f9fc;
  margin-bottom: 0;
}

.table > thead {
  background-color: #f8f9fc;
}

.table > thead th {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--dh-text-muted);
  border-bottom: 1px solid var(--dh-border);
  padding: 0.75rem 1rem;
  white-space: nowrap;
}

.table tbody td {
  padding: 0.7rem 1rem;
  vertical-align: middle;
  border-bottom: 1px solid #f1f3f8;
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table-hover tbody tr {
  transition: background-color var(--dh-transition);
}

.table-hover tbody tr:hover {
  background-color: #f7f8fd;
}

.table > :not(caption) > * > * {
  box-shadow: none;
}

/* 分页 */
.pagination {
  gap: 0.25rem;
}

.page-link {
  border: 1px solid var(--dh-border);
  border-radius: var(--dh-radius-sm) !important;
  color: var(--dh-text-muted);
  padding: 0.35rem 0.7rem;
  font-size: 0.85rem;
  transition: all var(--dh-transition);
}

.page-link:hover {
  background-color: var(--dh-primary-soft);
  border-color: var(--dh-primary-light);
  color: var(--dh-primary);
}

.page-item.active .page-link {
  background-color: var(--dh-primary);
  border-color: var(--dh-primary);
  box-shadow: 0 2px 6px rgba(var(--dh-primary-rgb), 0.32);
}

.page-item.disabled .page-link {
  background-color: #fff;
  border-color: var(--dh-border);
  color: #c3c9d4;
}

/* 徽章 */
.badge {
  border-radius: 999px;
  font-weight: 500;
  padding: 0.35em 0.7em;
  font-size: 0.72rem;
}

/* 提示框 */
.alert {
  border: none;
  border-radius: var(--dh-radius);
  border-left: 4px solid transparent;
  box-shadow: var(--dh-shadow-xs);
}

.alert-success {
  background-color: #ecfdf5;
  color: #047857;
  border-left-color: #10b981;
}

.alert-danger {
  background-color: #fef2f2;
  color: #b91c1c;
  border-left-color: #ef4444;
}

.alert-warning {
  background-color: #fffbeb;
  color: #b45309;
  border-left-color: #f59e0b;
}

.alert-info {
  background-color: #eff6ff;
  color: #1d4ed8;
  border-left-color: #3b82f6;
}

/* ============ 3. 前台样式 ============ */

/* 顶部导航 */
.navbar.bg-primary {
  background: linear-gradient(100deg, var(--dh-primary-dark) 0%, var(--dh-primary) 55%, var(--dh-primary-light) 100%) !important;
  box-shadow: 0 2px 12px rgba(var(--dh-primary-rgb), 0.3) !important;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand::before {
  content: "";
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.22);
  display: inline-block;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.35);
}

.navbar-dark .navbar-nav .nav-link {
  color: rgba(255, 255, 255, 0.82);
  border-radius: var(--dh-radius-sm);
  padding: 0.4rem 0.75rem !important;
  margin: 0 0.1rem;
  transition: all var(--dh-transition);
  font-size: 0.9rem;
}

.navbar-dark .navbar-nav .nav-link:hover {
  color: #fff;
  background-color: rgba(255, 255, 255, 0.14);
}

.navbar .form-control {
  border: 1px solid rgba(255, 255, 255, 0.28);
  background-color: rgba(255, 255, 255, 0.16);
  color: #fff;
  border-radius: 999px;
  min-width: 170px;
}

.navbar .form-control::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

.navbar .form-control:focus {
  background-color: rgba(255, 255, 255, 0.24);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
  box-shadow: none;
}

.navbar .btn-outline-light {
  border-radius: 999px;
}

/* 站点卡片 */
.site-card {
  border: 1px solid var(--dh-border);
  border-radius: var(--dh-radius);
  transition: transform var(--dh-transition), box-shadow var(--dh-transition),
    border-color var(--dh-transition);
  background: var(--dh-surface);
  overflow: hidden;
  position: relative;
}

.site-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--dh-shadow-md);
  border-color: var(--dh-primary-light);
}

.site-card .card-title {
  font-weight: 600;
  font-size: 0.95rem;
  transition: color var(--dh-transition);
}

.site-card:hover .card-title {
  color: var(--dh-primary) !important;
}

.site-card.recommended {
  border-color: #fcd34d;
  background: linear-gradient(135deg, #fffbeb 0%, #ffffff 60%);
}

.site-card.recommended:hover {
  border-color: #fbbf24;
  box-shadow: 0 8px 24px rgba(251, 191, 36, 0.18);
}

.site-card-arrow {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  font-size: 0.8rem;
  color: var(--dh-primary);
  opacity: 0;
  transform: translate(-3px, 3px);
  transition: all var(--dh-transition);
}

.site-card:hover .site-card-arrow {
  opacity: 1;
  transform: translate(0, 0);
}

/* 站点图标 */
.site-logo-text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--dh-primary) 0%, var(--dh-primary-light) 100%);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(var(--dh-primary-rgb), 0.25);
}

.site-logo-text.small {
  width: 32px;
  height: 32px;
  font-size: 14px;
  border-radius: 10px;
}

.site-logo img {
  object-fit: contain;
  border-radius: 12px;
}

/* 分类区块 */
.category-section {
  animation: fadeIn 0.35s ease;
  scroll-margin-top: 90px;
}

.category-section .fw-bold {
  color: var(--dh-text);
  font-size: 1.05rem;
}

.section-title-bar {
  width: 4px;
  height: 18px;
  background: linear-gradient(180deg, var(--dh-accent), #fb7185);
  border-radius: 999px;
  margin-right: 0.7rem;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 分类侧边导航 */
.category-sidebar {
  position: sticky;
  top: 0px;
  border-radius: var(--dh-radius-lg);
  background: var(--dh-surface);
  border: 1px solid var(--dh-border) !important;
  box-shadow: var(--dh-shadow-xs);
  overflow: hidden;
  padding: 0.5rem 0;
}

.category-sidebar .list-group-item {
  border: none;
  padding: 0.65rem 1.1rem;
  color: var(--dh-text-muted);
  font-size: 0.88rem;
  transition: all var(--dh-transition);
  background: transparent;
  margin: 0.1rem 0.6rem;
  border-radius: var(--dh-radius-sm);
}

.category-sidebar .list-group-item:hover {
  background-color: #f5f6fb;
  color: var(--dh-primary);
  transform: translateX(2px);
}

.category-sidebar .list-group-item.active {
  background: linear-gradient(90deg, var(--dh-primary-soft), rgba(99, 102, 241, 0.04));
  color: var(--dh-primary);
  font-weight: 600;
  border-left: none;
  padding-left: 1.1rem;
  box-shadow: inset 3px 0 0 var(--dh-primary);
}

.category-sidebar .list-group-item.active .category-icon {
  color: var(--dh-primary);
}

.category-sidebar .category-icon {
  font-size: 0.95rem;
  width: 20px;
  text-align: center;
}

.category-sidebar .contact-btn {
  border-radius: 999px;
  width: calc(100% - 1.2rem);
  margin-left: 0.6rem;
  margin-top: 0.6rem;
}

/* 站点卡片悬停提示 */
.tooltip {
  --bs-tooltip-bg: #1f2937;
  --bs-tooltip-opacity: 0.97;
  --bs-tooltip-max-width: 280px;
}

.tooltip-inner {
  max-width: 280px;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  text-align: left;
  line-height: 1.55;
  font-size: 0.8rem;
  word-break: break-word;
}

.tooltip.show {
  opacity: var(--bs-tooltip-opacity);
}

/* 空状态 */
.site-empty .bi,
.bi-inbox.display-4,
.bi-folder2-open.display-4,
.bi-link-45deg.display-4,
.bi-file-earmark-text.display-4 {
  color: #cbd5e1 !important;
}

/* 页脚 */
.footer {
  background-color: #fff;
  border-top: 1px solid var(--dh-border);
  margin-top: 2rem;
  color: var(--dh-text-muted);
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
  text-align: start;
}

.min-width-0 {
  min-width: 0;
}

/* ============ 4. 后台样式 ============ */
.admin-body {
  background-color: #f5f6fa;
}

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

/* 侧边栏 */
.admin-sidebar {
  width: 240px;
  flex-shrink: 0;
  background: linear-gradient(180deg, #1e293b 0%, #172033 100%);
  color: #cbd5e1;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  box-shadow: 2px 0 12px rgba(15, 23, 42, 0.08);
}

.admin-sidebar::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  background-clip: content-box;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 1.15rem 1.25rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  color: #fff;
}

.admin-brand > i {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  color: #fff;
  background: linear-gradient(135deg, var(--dh-primary) 0%, var(--dh-primary-light) 100%);
  box-shadow: 0 4px 12px rgba(var(--dh-primary-rgb), 0.35);
  flex-shrink: 0;
}

.admin-brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.admin-brand-name {
  font-weight: 700;
  font-size: 0.95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.admin-brand-text small {
  font-size: 0.7rem;
  color: #94a3b8;
  letter-spacing: 0.04em;
}

.admin-nav {
  padding: 0.75rem 0.65rem;
  flex: 1;
}

.admin-nav-label {
  padding: 0.9rem 0.6rem 0.35rem;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #64748b;
  font-weight: 600;
}

.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.6rem 0.75rem;
  margin-bottom: 0.15rem;
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.88rem;
  border-radius: var(--dh-radius-sm);
  transition: all var(--dh-transition);
  position: relative;
}

.admin-nav-item > i {
  width: 20px;
  text-align: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.admin-nav-item:hover {
  background-color: rgba(255, 255, 255, 0.07);
  color: #fff;
  transform: translateX(2px);
}

.admin-nav-item.active {
  background: linear-gradient(90deg, var(--dh-primary), rgba(var(--dh-primary-rgb), 0.72));
  color: #fff;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(var(--dh-primary-rgb), 0.35);
}

.admin-nav-item.active:hover {
  transform: none;
  background: linear-gradient(90deg, var(--dh-primary), rgba(var(--dh-primary-rgb), 0.85));
}

.admin-sidebar-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding: 0.6rem 0.65rem 0.9rem;
}

/* 主区域 */
.admin-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.admin-topbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.75rem;
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--dh-border);
  position: sticky;
  top: 0;
  z-index: 20;
}

.admin-topbar-title {
  flex: 1;
  min-width: 0;
}

.admin-topbar-title h1 {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--dh-text);
  margin: 0;
}

.admin-topbar-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.admin-user {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--dh-text-muted);
  background-color: #f4f5fa;
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
}

.admin-user > i {
  color: var(--dh-primary);
  font-size: 0.95rem;
}

.admin-topbar .btn-outline-light {
  color: var(--dh-text-muted);
  border-color: var(--dh-border);
  background-color: #fff;
}

.admin-topbar .btn-outline-light:hover {
  color: #fff;
  background-color: var(--dh-accent);
  border-color: var(--dh-accent);
}

.admin-menu-toggle {
  background: transparent;
  border: 1px solid var(--dh-border);
  border-radius: var(--dh-radius-sm);
  color: var(--dh-text);
  font-size: 1.15rem;
  line-height: 1;
  padding: 0.3rem 0.5rem;
}

.admin-content {
  padding: 1.5rem 1.75rem;
  flex: 1;
}

.admin-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  z-index: 40;
}

.admin-backdrop.show {
  display: block;
}

/* 后台内容区通用美化 */
.admin-content .card {
  border-radius: var(--dh-radius);
  border-color: var(--dh-border);
}

.admin-content .card-header {
  background-color: #fff;
  border-bottom: 1px solid var(--dh-border);
  font-size: 0.92rem;
  color: var(--dh-text);
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.admin-content .card-header .bi {
  color: var(--dh-primary);
}

.admin-content .card-header .btn-link {
  font-weight: 500;
  font-size: 0.82rem;
}

.admin-content .table > thead th {
  background-color: #f8f9fc;
}

.admin-content .table > thead.table-dark th {
  background-color: #1e293b;
  color: #e2e8f0;
}

.admin-content .badge {
  font-size: 0.72rem;
}

/* 统计卡片 */
.admin-stat-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--dh-surface);
  border: 1px solid var(--dh-border);
  border-radius: var(--dh-radius);
  padding: 1.15rem 1.25rem;
  height: 100%;
  box-shadow: var(--dh-shadow-xs);
  transition: all var(--dh-transition);
  position: relative;
  overflow: hidden;
}

.admin-stat-card::after {
  content: "";
  position: absolute;
  right: -20px;
  top: -20px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.035;
}

.admin-stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--dh-shadow-md);
  border-color: #dfe3ee;
}

.admin-stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.admin-stat-value {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--dh-text);
}

.admin-stat-label {
  font-size: 0.8rem;
  color: var(--dh-text-muted);
}

/* 后台进度条 */
.admin-content .progress {
  background-color: #eef0f6;
  border-radius: 999px;
  overflow: hidden;
}

.admin-content .progress-bar {
  background: linear-gradient(90deg, var(--dh-primary) 0%, var(--dh-primary-light) 100%);
  border-radius: 999px;
}

/* 后台空状态 */
.admin-content .text-center.py-5 .bi,
.admin-content .display-4 {
  color: #cbd5e1 !important;
}

/* ============ 5. 自定义页面（WordPress 风格） ============ */
.content-page {
  border: 1px solid var(--dh-border);
  border-radius: var(--dh-radius-lg);
}

.content-page-header {
  border-bottom: 1px solid #f1f3f8;
  padding-bottom: 1rem;
}

.content-page-header h1 {
  font-size: 1.65rem;
  color: var(--dh-text);
}

.content-page-body {
  font-size: 0.98rem;
  line-height: 1.85;
  color: #374151;
  word-wrap: break-word;
}

.content-page-body h1,
.content-page-body h2,
.content-page-body h3,
.content-page-body h4 {
  margin-top: 1.75rem;
  margin-bottom: 0.85rem;
  font-weight: 700;
  color: var(--dh-text);
}

.content-page-body h2 {
  padding-left: 0.7rem;
  border-left: 4px solid var(--dh-primary);
}

.content-page-body p {
  margin-bottom: 1.1rem;
}

.content-page-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--dh-radius);
  box-shadow: var(--dh-shadow-xs);
}

.content-page-body a {
  color: var(--dh-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--dh-primary-light);
  transition: all var(--dh-transition);
}

.content-page-body a:hover {
  color: var(--dh-primary-dark);
  border-bottom-color: var(--dh-primary-dark);
}

.content-page-body blockquote {
  border-left: 4px solid var(--dh-primary);
  padding: 0.75rem 1.1rem;
  margin: 1.25rem 0;
  color: var(--dh-text-muted);
  background-color: #f8f9fc;
  border-radius: 0 var(--dh-radius-sm) var(--dh-radius-sm) 0;
}

.content-page-body pre {
  background-color: #1e293b;
  color: #e2e8f0;
  padding: 1rem 1.15rem;
  border-radius: var(--dh-radius-sm);
  overflow-x: auto;
  font-size: 0.85rem;
}

.content-page-body code {
  background-color: #f1f3f8;
  color: var(--dh-accent);
  padding: 0.15em 0.4em;
  border-radius: 5px;
  font-size: 0.88em;
}

.content-page-body pre code {
  background-color: transparent;
  color: inherit;
  padding: 0;
}

.content-page-body ul,
.content-page-body ol {
  padding-left: 1.4rem;
  margin-bottom: 1.1rem;
}

.content-page-body li {
  margin-bottom: 0.35rem;
}

.content-page-body table {
  width: 100%;
  margin-bottom: 1.25rem;
  border-collapse: collapse;
}

.content-page-body table th,
.content-page-body table td {
  border: 1px solid var(--dh-border);
  padding: 0.5rem 0.75rem;
}

.content-page-body table th {
  background-color: #f8f9fc;
  font-weight: 600;
}

.content-page-body hr {
  margin: 1.75rem 0;
  border-color: var(--dh-border);
}

/* ============ 主题色选择器 ============ */
.theme-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px #dfe3ee;
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition: transform var(--dh-transition), box-shadow var(--dh-transition);
}

.theme-swatch:hover {
  transform: scale(1.12);
}

.theme-swatch.active {
  box-shadow: 0 0 0 2px #fff, 0 0 0 4px #64748b;
}

/* 切换按钮：随所在容器（深色导航 / 浅色顶栏）自适应 */
.navbar .theme-toggle {
  color: rgba(255, 255, 255, 0.85);
  border-color: rgba(255, 255, 255, 0.35);
  border-radius: var(--dh-radius-sm);
}

.navbar .theme-toggle:hover,
.navbar .theme-toggle:focus,
.navbar .theme-toggle.show {
  color: #fff;
  background-color: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.5);
}

.admin-topbar .theme-toggle {
  color: var(--dh-text-muted);
  border-color: var(--dh-border);
  background-color: #fff;
  border-radius: var(--dh-radius-sm);
}

.admin-topbar .theme-toggle:hover,
.admin-topbar .theme-toggle:focus,
.admin-topbar .theme-toggle.show {
  color: var(--dh-primary);
  background-color: var(--dh-primary-soft);
  border-color: var(--dh-primary-light);
}

.theme-picker {
  min-width: 240px;
}

/* 站点 Logo */
.navbar-logo {
  height: 26px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  border-radius: 6px;
  background-color: rgba(255, 255, 255, 0.16);
  padding: 2px 5px;
}

.navbar-brand.has-logo::before {
  display: none;
}

.admin-brand-logo {
  width: 34px;
  height: 34px;
  object-fit: contain;
  border-radius: 10px;
  background-color: rgba(255, 255, 255, 0.1);
  padding: 3px;
  flex-shrink: 0;
}

.logo-preview {
  width: 88px;
  height: 88px;
  border-radius: var(--dh-radius);
  border: 1px solid var(--dh-border);
  background-color: #f8f9fc;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.logo-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 6px;
}

.logo-preview i {
  font-size: 1.8rem;
  color: #b6bdc9;
}

.theme-picker .form-control-color {
  width: 46px;
  height: 32px;
  padding: 2px;
  border-radius: 6px;
  cursor: pointer;
}

.theme-preview {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1rem 1.15rem;
  border: 1px dashed #dfe3ee;
  border-radius: var(--dh-radius-sm);
  background-color: #fbfcfe;
}

/* ============ 附件管理 ============ */
.upload-dropzone {
  border: 2px dashed #d5dae5;
  border-radius: var(--dh-radius);
  padding: 2rem 1.5rem;
  text-align: center;
  background-color: #fbfcfe;
  cursor: pointer;
  transition: all var(--dh-transition);
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
  border-color: var(--dh-primary-light);
  background-color: var(--dh-primary-soft);
}

.upload-dropzone-icon {
  font-size: 2rem;
  color: var(--dh-primary);
  display: block;
  margin-bottom: 0.6rem;
}

.attachment-card {
  border: 1px solid var(--dh-border);
  border-radius: var(--dh-radius-sm);
  overflow: hidden;
  background: #fff;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all var(--dh-transition);
}

.attachment-card:hover {
  border-color: var(--dh-primary-light);
  box-shadow: var(--dh-shadow-sm);
  transform: translateY(-2px);
}

.attachment-thumb {
  height: 96px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f6f7fb;
  border-bottom: 1px solid var(--dh-border);
  overflow: hidden;
}

.attachment-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 0.4rem;
}

.attachment-thumb i {
  font-size: 2rem;
  color: #9aa4b8;
}

.attachment-body {
  padding: 0.6rem 0.7rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.attachment-name {
  font-size: 0.82rem;
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attachment-meta {
  font-size: 0.72rem;
  color: var(--dh-text-muted);
}

.attachment-actions {
  display: flex;
  gap: 0.3rem;
  margin-top: auto;
}

.attachment-actions .btn {
  padding: 0.15rem 0.4rem;
  font-size: 0.75rem;
}

.attachment-pick {
  cursor: pointer;
}

.attachment-pick:hover {
  box-shadow: 0 0 0 2px var(--dh-primary);
}

/* 文件夹列表 */
.folder-list .list-group-item {
  border: none;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
}

.folder-list .list-group-item.active {
  background: linear-gradient(90deg, var(--dh-primary-soft), rgba(255, 255, 255, 0));
  color: var(--dh-primary);
  font-weight: 600;
  box-shadow: inset 3px 0 0 var(--dh-primary);
}

.folder-list .list-group-item.active .bi {
  color: var(--dh-primary);
}

.folder-item {
  padding-right: 0.5rem !important;
}

.folder-item .text-reset:hover {
  color: var(--dh-primary) !important;
}

.folder-actions {
  display: none;
  gap: 0.15rem;
}

.folder-item:hover .folder-actions,
.folder-item.active .folder-actions {
  display: flex;
  align-items: center;
}

.attachment-move {
  font-size: 0.72rem;
  padding: 0.15rem 1.4rem 0.15rem 0.4rem;
  border-radius: 6px;
}

/* ============ 6. 富文本编辑器 ============ */
.rich-editor {
  border: 1px solid #e2e6ee;
  border-radius: var(--dh-radius-sm);
  overflow: hidden;
  background: #fff;
  transition: all var(--dh-transition);
}

.rich-editor:focus-within {
  border-color: var(--dh-primary-light);
  box-shadow: 0 0 0 0.18rem var(--dh-primary-soft);
}

.editor-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.2rem;
  padding: 0.5rem;
  background-color: #f8f9fc;
  border-bottom: 1px solid #e9edf3;
}

.editor-toolbar .btn {
  color: #4b5563;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
}

.editor-toolbar .btn:hover {
  background-color: var(--dh-primary-soft);
  color: var(--dh-primary);
}

.editor-toolbar .editor-block {
  width: auto;
  min-width: 96px;
  border-color: #e2e6ee;
}

.editor-toolbar .editor-divider {
  width: 1px;
  height: 20px;
  background-color: #e2e6ee;
  margin: 0 0.25rem;
}

.editor-container {
  min-height: 320px;
  max-height: 640px;
  overflow-y: auto;
  padding: 1rem 1.1rem;
  font-size: 0.95rem;
  line-height: 1.75;
  outline: none;
}

.editor-container h1,
.editor-container h2,
.editor-container h3 {
  font-weight: 700;
}

.editor-container img {
  max-width: 100%;
  border-radius: var(--dh-radius-sm);
}

.editor-container blockquote {
  border-left: 4px solid var(--dh-primary);
  padding-left: 1rem;
  color: var(--dh-text-muted);
}

/* ============ 7. 响应式 ============ */
@media (max-width: 991.98px) {
  .admin-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 50;
    transform: translateX(-100%);
    transition: transform 0.25s ease;
  }

  .admin-sidebar.show {
    transform: translateX(0);
  }

  .admin-content {
    padding: 1.15rem 1rem;
  }

  .admin-topbar {
    padding: 0.75rem 1rem;
  }

  .admin-user {
    display: none;
  }

  .category-section {
    scroll-margin-top: 70px;
  }
}

@media (max-width: 576px) {
  .site-card .card-body {
    padding: 0.75rem;
  }

  .site-card .card-title {
    font-size: 0.88rem;
  }

  .admin-stat-card {
    padding: 0.9rem 1rem;
  }

  .admin-stat-icon {
    width: 40px;
    height: 40px;
    font-size: 1.15rem;
  }

  .admin-stat-value {
    font-size: 1.35rem;
  }

  .navbar .form-control {
    min-width: 120px;
  }
}