/* ==========================================================================
   ToolsEngine 壁纸配置后台 - 全局高保真视觉设计系统
   纯正浅蓝白科技后台质感，现代卡片化、极致微交互与丝滑拖拽
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计变量与主题 Token
   -------------------------------------------------------------------------- */
:root {
  /* 品牌主色系 - Ant Design / ToolsEngine 级纯正科技蓝 */
  --primary: #1677ff;
  --primary-hover: #4096ff;
  --primary-active: #0958d9;
  --primary-light: #e6f4ff;
  --primary-border: #91caff;
  --primary-gradient: linear-gradient(135deg, #1677ff 0%, #3b82f6 100%);

  /* 辅助状态色 */
  --success: #52c41a;
  --success-bg: #f6ffed;
  --success-border: #b7eb8f;
  --warning: #faad14;
  --warning-bg: #fffbe6;
  --warning-border: #ffe58f;
  --danger: #ff4d4f;
  --danger-bg: #fff1f0;
  --danger-border: #ffa39e;
  --info: #13c2c2;
  --purple: #722ed1;
  --purple-bg: #f9f0ff;

  /* 金色置顶特权色 */
  --gold-primary: #fa8c16;
  --gold-badge-bg: linear-gradient(135deg, #fff7e6 0%, #ffe7ba 100%);
  --gold-badge-border: #ffd591;
  --gold-text: #d46b08;
  --gold-glow: rgba(250, 140, 22, 0.35);

  /* 中性背景色与表面色 */
  --bg-page: #f5f7fa;
  --bg-card: #ffffff;
  --bg-sidebar: #ffffff;
  --bg-header: #ffffff;
  --bg-hover: #f8fafc;
  --bg-active: #f1f5f9;
  --bg-muted: #f3f4f6;

  /* 文字颜色体系 */
  --text-main: #1f2937;
  --text-regular: #4b5563;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --text-disabled: #cbd5e1;

  /* 边框与分割线 */
  --border-color: #e5e7eb;
  --border-light: #f1f5f9;
  --border-focus: #1677ff;

  /* 阴影体系 */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 2px 8px 0 rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 24px -4px rgba(22, 119, 255, 0.12), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  /* 布局尺度 */
  --sidebar-width: 230px;
  --header-height: 60px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* 转场动效 */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   2. 基础重置与排版
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-main);
  background-color: var(--bg-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  color: inherit;
  outline: none;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--primary-hover);
}

ul, ol {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #d1d5db;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

/* --------------------------------------------------------------------------
   3. 全局应用布局 (App Container)
   -------------------------------------------------------------------------- */
.app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background-color: var(--bg-page);
}

/* --------------------------------------------------------------------------
   4. 左侧侧边栏 (Sidebar)
   -------------------------------------------------------------------------- */
.app-sidebar {
  width: var(--sidebar-width);
  height: 100%;
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  z-index: 20;
  user-select: none;
  box-shadow: var(--shadow-xs);
}

.sidebar-brand {
  height: var(--header-height);
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-color);
  background: #ffffff;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--primary-gradient);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-weight: 800;
  font-size: 18px;
  box-shadow: 0 2px 6px rgba(22, 119, 255, 0.35);
}

.brand-title {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: #0f172a;
}
.brand-tag {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 5px;
  border-radius: 4px;
  background: var(--primary-light);
  color: var(--primary);
  margin-left: auto;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.nav-section-title {
  padding: 10px 14px 6px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  color: var(--text-regular);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

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

.nav-item.active {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.nav-item.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 3.5px;
  background: var(--primary);
  border-radius: 0 4px 4px 0;
}

.nav-item-icon {
  font-size: 16px;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.sidebar-footer {
  padding: 14px 18px;
  border-top: 1px solid var(--border-color);
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.system-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.system-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 2px var(--success-bg);
}

/* --------------------------------------------------------------------------
   5. 顶部 Header 与二级 Tab 导航
   -------------------------------------------------------------------------- */
.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-page);
}

.app-header {
  height: var(--header-height);
  background-color: var(--bg-header);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
  z-index: 10;
  box-shadow: var(--shadow-xs);
}

.header-left {
  display: flex;
  align-items: center;
  height: 100%;
}

/* 顶部三Tab切换按钮组 */
.main-tabs {
  display: flex;
  align-items: center;
  height: 100%;
  gap: 4px;
}

.main-tab-btn {
  height: 100%;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-regular);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-fast);
  user-select: none;
}

.main-tab-btn:hover {
  color: var(--primary);
  background: rgba(22, 119, 255, 0.03);
}

.main-tab-btn.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom-color: var(--primary);
}

.main-tab-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 10px;
  background: #f1f5f9;
  color: #64748b;
  transition: all var(--transition-fast);
}

.main-tab-btn.active .main-tab-badge {
  background: var(--primary-light);
  color: var(--primary);
}

/* 顶部右侧工具栏 */
.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.global-region-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-hover);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 5px 10px;
  font-size: 13px;
}

.global-region-selector label {
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
}

.header-select {
  border: none;
  background: transparent;
  color: var(--text-main);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
}

.header-user-profile {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-left: 12px;
  border-left: 1px solid var(--border-color);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #e2e8f0;
  border: 1.5px solid #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  color: #475569;
}

.user-info {
  display: flex;
  flex-direction: column;
}
.user-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.2;
}
.user-role {
  font-size: 11px;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   6. Tab 容器管理与内容区
   -------------------------------------------------------------------------- */
.app-content {
  flex: 1;
  overflow-y: auto;
  position: relative;
  display: flex;
  flex-direction: column;
}

.tab-pane {
  display: none;
  flex-direction: column;
  padding: 20px 24px 40px;
  min-height: 100%;
  animation: fadeIn 0.2s ease-in-out;
}

.tab-pane.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(3px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   7. 通用 UI 组件规范（卡片、按钮、表单、表格等）
   -------------------------------------------------------------------------- */
.panel-card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card);
  padding: 20px;
  margin-bottom: 20px;
  position: relative;
}

/* 按钮通用 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 2px 4px rgba(22, 119, 255, 0.2);
}
.btn-primary:hover {
  background: var(--primary-hover);
  border-color: var(--primary-hover);
}
.btn-primary:active {
  background: var(--primary-active);
}

.btn-default {
  background: #ffffff;
  color: var(--text-main);
  border-color: var(--border-color);
}
.btn-default:hover {
  color: var(--primary);
  border-color: var(--primary-border);
  background: var(--primary-light);
}

.btn-danger {
  background: #ffffff;
  color: var(--danger);
  border-color: var(--danger-border);
}
.btn-danger:hover {
  background: var(--danger-bg);
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 10px 22px;
  font-size: 14px;
}

/* 输入框与下拉选择框 */
.form-control, .input-text, .select-control {
  height: 34px;
  padding: 0 11px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--text-main);
  font-size: 13px;
  transition: all var(--transition-fast);
  width: 100%;
}

.form-control:focus, .input-text:focus, .select-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(22, 119, 255, 0.15);
}

/* 筛选区栏栅 (Filter Area) */
.filter-card {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-xs);
}

.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px 20px;
  align-items: flex-end;
}

.filter-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
}

.filter-actions {
  display: flex;
  gap: 10px;
  align-items: flex-end;
}

/* 表格组件 (Table) */
.table-wrapper {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-xs);
  overflow-x: auto;
}

.modern-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.modern-table th {
  background-color: #f8fafc;
  color: #475569;
  font-weight: 600;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.modern-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  transition: background-color var(--transition-fast);
}

.modern-table tbody tr:hover td {
  background-color: #f0f7ff;
}

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

/* 类型徽章 (Tags) */
.type-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.type-tag.static {
  background-color: #e6f4ff;
  color: #0958d9;
  border: 1px solid #91caff;
}

.type-tag.live {
  background-color: #f6ffed;
  color: #389e0d;
  border: 1px solid #b7eb8f;
}

.type-tag.pull {
  background-color: #fff7e6;
  color: #d46b08;
  border: 1px solid #ffd591;
}

/* 状态圆点 (Status Dot) */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}
.status-pill.online::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
}
.status-pill.offline::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #94a3b8;
}

/* --------------------------------------------------------------------------
   8. Tab 3 专属：壁纸排序模块 (Sorting Module)
   -------------------------------------------------------------------------- */
.sorting-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* 顶部操作与筛选条 */
.sorting-header-panel {
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-xs);
}

.sorting-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.sorting-meta-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sorting-title-text {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
}

.sorting-count-badge {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.sorting-action-buttons {
  display: flex;
  align-items: center;
  gap: 12px;
}

.sorting-tip {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* 一级分类 Tab 栏 */
.sorting-category-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 4px;
  overflow-x: auto;
}

.category-tab-btn {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-regular);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  margin-bottom: -5px;
}

.category-tab-btn:hover {
  color: var(--primary);
}

.category-tab-btn.active {
  color: var(--primary);
  font-weight: 600;
  border-bottom-color: var(--primary);
}

/* 二级分类 Segmented 胶囊按钮栏 */
.sorting-subcategory-segmented {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 4px;
  overflow-x: auto;
}

.subcat-pill-btn {
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  background: #f1f5f9;
  color: var(--text-regular);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.subcat-pill-btn:hover {
  background: #e2e8f0;
  color: var(--text-main);
}

.subcat-pill-btn.active {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(22, 119, 255, 0.25);
}

/* 壁纸卡片网格系统 (Grid 瀑布流) */
.wallpaper-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(185px, 1fr));
  gap: 20px;
  padding: 4px 0 20px;
}

/* 单个壁纸卡片 */
.wallpaper-card {
  position: relative;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  cursor: grab;
  user-select: none;
}

.wallpaper-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-border);
}

.wallpaper-card:active {
  cursor: grabbing;
}

/* 置顶卡片特殊高光外框 */
.wallpaper-card.is-top-item {
  border: 1.5px solid var(--gold-primary);
  box-shadow: 0 4px 12px var(--gold-glow);
}

/* 拖拽状态中的样式 */
.wallpaper-card.dragging {
  opacity: 0.35;
  transform: scale(0.96);
  border: 2px dashed var(--primary);
  box-shadow: none;
}

.wallpaper-card.drag-over {
  border-left: 3px solid var(--primary);
  transform: scale(1.02);
}

/* 闪烁高亮动效 (置顶或取消置顶后视觉反馈) */
@keyframes highlight-flash {
  0% { box-shadow: 0 0 0 4px rgba(22, 119, 255, 0.6); }
  50% { box-shadow: 0 0 0 8px rgba(250, 140, 22, 0.4); }
  100% { box-shadow: 0 4px 12px var(--gold-glow); }
}

.wallpaper-card.flash-highlight {
  animation: highlight-flash 1s ease-in-out;
}

/* 卡片海报封面区 (9:16 精致比例) */
.card-media-wrapper {
  position: relative;
  width: 100%;
  padding-top: 177.77%; /* 9:16 高度比 */
  background: #0f172a;
  overflow: hidden;
}

.card-cover-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.wallpaper-card:hover .card-cover-img {
  transform: scale(1.06);
}

/* 媒体覆盖层徽章 */
.card-badge-container {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
  z-index: 2;
}

/* 类型徽章覆盖 */
.media-type-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 7px;
  border-radius: 4px;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.media-type-badge.STATIC {
  background: rgba(22, 119, 255, 0.85);
  color: #ffffff;
}
.media-type-badge.LIVE {
  background: rgba(16, 185, 129, 0.88);
  color: #ffffff;
}
.media-type-badge.PULL {
  background: rgba(249, 115, 22, 0.9);
  color: #ffffff;
}

/* 置顶金色金牌徽章 */
.top-order-badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  background: var(--gold-badge-bg);
  color: var(--gold-text);
  border: 1px solid var(--gold-badge-border);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px rgba(250, 140, 22, 0.35);
  backdrop-filter: blur(4px);
  animation: pulseGold 2.5s infinite;
}

@keyframes pulseGold {
  0% { transform: scale(1); }
  50% { transform: scale(1.04); }
  100% { transform: scale(1); }
}

/* 播放动图小图标覆盖 (对于 LIVE / PULL) */
.media-format-indicator {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 11px;
  pointer-events: none;
}

/* 卡片底部信息区 */
.card-content {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: #ffffff;
}

.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 6px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.card-id-tag {
  font-size: 11px;
  color: var(--text-muted);
  font-family: monospace;
}

.card-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
}

/* 卡片操作条 (置顶与手柄) */
.card-action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 8px;
  margin-top: 4px;
  border-top: 1px solid var(--border-light);
}

.btn-top-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
  background: #ffffff;
  color: var(--text-secondary);
}

.btn-top-toggle:hover {
  border-color: var(--gold-primary);
  color: var(--gold-primary);
  background: var(--warning-bg);
}

/* 已置顶状态按钮 */
.btn-top-toggle.is-active {
  background: var(--gold-badge-bg);
  border-color: var(--gold-badge-border);
  color: var(--gold-text);
}
.btn-top-toggle.is-active:hover {
  background: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger);
}

.drag-handle-indicator {
  font-size: 13px;
  color: var(--text-muted);
  cursor: grab;
  padding: 2px 4px;
  border-radius: 4px;
}
.drag-handle-indicator:hover {
  color: var(--primary);
  background: var(--bg-hover);
}

/* 空状态 (Empty State) */
.empty-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  color: var(--text-muted);
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px dashed var(--border-color);
  grid-column: 1 / -1;
}

.empty-icon {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.7;
}

.empty-text {
  font-size: 14px;
  font-weight: 500;
}

/* --------------------------------------------------------------------------
   9. 全局 Toast 提示组件 (Toast Notification)
   -------------------------------------------------------------------------- */
#toast-container {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 99999;
  pointer-events: none;
}

.toast-item {
  min-width: 280px;
  max-width: 450px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  background: #ffffff;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  pointer-events: auto;
  opacity: 0;
  transform: translateY(-15px) scale(0.95);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-item.toast-show {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.toast-icon {
  font-size: 16px;
  display: flex;
  align-items: center;
}

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

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

.toast-item.toast-warning {
  border-left: 4px solid var(--warning);
}
.toast-item.toast-warning .toast-icon {
  color: var(--warning);
}

.toast-item.toast-info {
  border-left: 4px solid var(--primary);
}
.toast-item.toast-info .toast-icon {
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   10. 通用模态框样式 (Modal Dialog System)
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
  display: flex;
  opacity: 1;
}

.modal-dialog {
  background: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 680px;
  max-width: 90vw;
  max-height: 88vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-spring);
}

.modal-backdrop.active .modal-dialog {
  transform: scale(1);
}

.modal-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: #0f172a;
}

.modal-close-btn {
  background: transparent;
  border: none;
  font-size: 18px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  line-height: 1;
}
.modal-close-btn:hover {
  color: var(--text-main);
  background: var(--bg-hover);
}

.modal-body {
  padding: 20px 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--border-color);
  background: #f8fafc;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

/* 全局模态框与弹窗遮罩标准 */
.cat-modal-mask {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.15s ease-out;
}
.cat-big-dialog {
  background: #ffffff;
  width: 900px;
  max-width: 95vw;
  max-height: 88vh;
  border-radius: 6px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #d9d9d9;
}
.cat-dialog-header {
  padding: 14px 20px;
  border-bottom: 1px solid #f0f0f0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 16px;
  font-weight: 600;
  color: #1f2937;
}
.cat-dialog-body {
  padding: 18px 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.cat-tag-pill {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  background: #e6f7ff;
  color: #1890ff;
  border: 1px solid #91d5ff;
  margin-right: 4px;
}
.cat-switch {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 22px;
}
.cat-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}
.cat-switch-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: #cbd5e1;
  transition: .25s;
  border-radius: 22px;
}
.cat-switch-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: .25s;
  border-radius: 50%;
}
.cat-switch input:checked + .cat-switch-slider {
  background-color: #1890ff;
}
.cat-switch input:checked + .cat-switch-slider:before {
  transform: translateX(20px);
}