/* ============================================
   SaaS 多租户系统 - 科技风设计系统
   ============================================ */

/* ---------- 设计变量 ---------- */
:root {
  /* 主色调 - 深空蓝 + 青紫渐变 */
  --bg-deep: #070b1a;
  --bg-base: #0b1226;
  --bg-elevated: #111a35;
  --bg-card: rgba(20, 30, 60, 0.55);
  --bg-card-hover: rgba(28, 42, 80, 0.75);
  --bg-input: rgba(15, 22, 45, 0.85);

  /* 边框 */
  --border-subtle: rgba(80, 120, 200, 0.12);
  --border-default: rgba(100, 140, 220, 0.22);
  --border-strong: rgba(120, 170, 255, 0.4);

  /* 文本 */
  --text-primary: #e8eefc;
  --text-secondary: #9fb0d4;
  --text-tertiary: #6276a3;
  --text-disabled: #3d4a6b;

  /* 品牌渐变 */
  --brand-gradient: linear-gradient(135deg, #5b8cff 0%, #a855f7 100%);
  --brand-cyan: #22d3ee;
  --brand-purple: #a855f7;
  --brand-blue: #5b8cff;

  /* 状态色 */
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;
  --info: #60a5fa;

  /* 阴影 */
  --shadow-glow: 0 0 24px rgba(91, 140, 255, 0.25);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  font-size: 14px;
  line-height: 1.5;
  overflow: hidden;
}

/* 全局背景 - 网格 + 流动光晕 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(91, 140, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91, 140, 255, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  top: -20%;
  right: -10%;
  width: 60%;
  height: 60%;
  background: radial-gradient(circle, rgba(168, 85, 247, 0.12) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
  animation: floatGlow 18s ease-in-out infinite;
}

@keyframes floatGlow {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-8%, 6%) scale(1.1); }
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(100, 140, 220, 0.25); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(100, 140, 220, 0.45); }

/* ============================================
   布局 - 顶部 + 侧边栏 + 主内容
   ============================================ */
.app-layout {
  display: grid;
  grid-template-rows: 56px 1fr;
  grid-template-columns: 240px 1fr;
  grid-template-areas:
    "header header"
    "sidebar main";
  height: 100vh;
  position: relative;
  z-index: 1;
}

/* ---------- 顶部导航 ---------- */
.app-header {
  grid-area: header;
  display: flex;
  align-items: center;
  padding: 0 20px;
  background: rgba(11, 18, 38, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.5px;
  width: 220px;
}

.brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--brand-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  position: relative;
}
.brand-logo::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 2px solid rgba(255,255,255,0.85);
  border-radius: 4px;
  border-right-color: transparent;
  border-bottom-color: transparent;
}

.brand-name {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 顶部租户切换器 - 多租户核心能力 */
.tenant-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
}
.tenant-switcher:hover { border-color: var(--border-strong); background: var(--bg-card-hover); }
.tenant-switcher .tenant-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}
.tenant-switcher .tenant-name { font-size: 13px; font-weight: 500; }
.tenant-switcher .tenant-role {
  font-size: 11px;
  color: var(--text-tertiary);
  padding: 1px 6px;
  background: rgba(91, 140, 255, 0.12);
  border-radius: 4px;
}
.tenant-switcher .caret {
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--text-secondary);
  margin-left: 4px;
}

/* 租户下拉菜单 */
.tenant-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 320px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all 0.2s;
  z-index: 100;
}
.tenant-switcher.open .tenant-dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.tenant-dropdown .dd-label {
  font-size: 11px;
  color: var(--text-tertiary);
  padding: 6px 10px 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.tenant-dropdown .dd-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}
.tenant-dropdown .dd-item:hover { background: var(--bg-card-hover); }
.tenant-dropdown .dd-item.active { background: rgba(91, 140, 255, 0.15); }
.tenant-dropdown .dd-item .dd-logo {
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--brand-gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; color: #fff;
}
.tenant-dropdown .dd-item .dd-info { flex: 1; min-width: 0; }
.tenant-dropdown .dd-item .dd-name { font-size: 13px; font-weight: 500; }
.tenant-dropdown .dd-item .dd-meta { font-size: 11px; color: var(--text-tertiary); }
.tenant-dropdown .dd-divider { height: 1px; background: var(--border-subtle); margin: 6px 0; }

.header-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 16px;
}
.header-icon-btn {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
  position: relative;
}
.header-icon-btn:hover { background: var(--bg-card); color: var(--text-primary); }
.header-icon-btn .badge {
  position: absolute;
  top: 4px; right: 4px;
  min-width: 14px; height: 14px;
  background: var(--danger);
  border-radius: 7px;
  font-size: 10px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 3px;
  color: #fff;
}
.header-user {
  display: flex; align-items: center; gap: 10px;
  padding: 4px 10px 4px 4px;
  border-radius: 20px;
  cursor: pointer;
  transition: background 0.2s;
}
.header-user:hover { background: var(--bg-card); }
.header-user .avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--brand-gradient);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600;
}
.header-user .u-name { font-size: 13px; }

/* ---------- 侧边栏 ---------- */
.app-sidebar {
  grid-area: sidebar;
  background: rgba(11, 18, 38, 0.6);
  backdrop-filter: blur(8px);
  border-right: 1px solid var(--border-subtle);
  overflow-y: auto;
  padding: 16px 12px;
}

.side-group { margin-bottom: 18px; }
.side-group-title {
  font-size: 11px;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 6px 12px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.side-group-title::before {
  content: '';
  width: 3px; height: 12px;
  background: var(--brand-gradient);
  border-radius: 2px;
}

.side-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  margin-bottom: 2px;
  transition: all 0.18s;
  position: relative;
}
.side-item:hover { background: var(--bg-card); color: var(--text-primary); }
.side-item.active {
  background: linear-gradient(90deg, rgba(91,140,255,0.18), rgba(168,85,247,0.08));
  color: var(--text-primary);
}
.side-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 3px;
  background: var(--brand-gradient);
  border-radius: 2px;
}
.side-item .icon {
  width: 16px; height: 16px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.side-item .label { flex: 1; }
.side-item .tag {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 8px;
  background: rgba(91,140,255,0.15);
  color: var(--brand-blue);
}

/* ---------- 主内容区 ---------- */
.app-main {
  grid-area: main;
  overflow-y: auto;
  padding: 24px 28px;
  position: relative;
}

.page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 22px;
  gap: 16px;
}
.page-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 6px;
}
.page-title .accent {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.page-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}
.page-actions { display: flex; gap: 10px; }

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-tertiary);
  margin-bottom: 10px;
}
.breadcrumb a:hover { color: var(--brand-blue); }
.breadcrumb .sep { color: var(--text-disabled); }

/* ============================================
   通用组件
   ============================================ */

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.18s;
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--brand-gradient);
  color: #fff;
  box-shadow: 0 4px 14px rgba(91,140,255,0.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(91,140,255,0.45); }
.btn-ghost {
  background: var(--bg-card);
  border-color: var(--border-default);
  color: var(--text-secondary);
}
.btn-ghost:hover { border-color: var(--border-strong); color: var(--text-primary); background: var(--bg-card-hover); }
.btn-danger { background: rgba(248,113,113,0.15); color: var(--danger); border-color: rgba(248,113,113,0.3); }
.btn-danger:hover { background: rgba(248,113,113,0.25); }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-text { padding: 4px 8px; color: var(--brand-blue); }
.btn-text:hover { background: rgba(91,140,255,0.1); }

/* 卡片 */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 20px;
  backdrop-filter: blur(8px);
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--border-default); }
.card-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title .extra { font-size: 12px; font-weight: 400; color: var(--text-tertiary); }

/* 指标卡 */
.metric-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 22px;
}
.metric-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.metric-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.metric-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  position: relative;
  overflow: hidden;
  transition: all 0.2s;
}
.metric-card:hover { border-color: var(--border-default); transform: translateY(-2px); }
.metric-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--brand-gradient);
  opacity: 0.7;
}
.metric-label {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.metric-value {
  font-size: 28px;
  font-weight: 700;
  font-feature-settings: 'tnum';
  letter-spacing: -0.5px;
}
.metric-value .unit { font-size: 14px; font-weight: 400; color: var(--text-secondary); margin-left: 4px; }
.metric-trend {
  margin-top: 8px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 4px;
}
.metric-trend.up { color: var(--success); }
.metric-trend.down { color: var(--danger); }
.metric-trend.flat { color: var(--text-tertiary); }

/* 表格 */
.table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.table-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
}
.table-toolbar .left { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.table-toolbar .right { margin-left: auto; display: flex; gap: 8px; }

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  text-align: left;
  padding: 12px 16px;
  font-weight: 500;
  color: var(--text-tertiary);
  font-size: 12px;
  background: rgba(15, 22, 45, 0.4);
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}
.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background 0.15s; }
.data-table tbody tr:hover { background: rgba(91,140,255,0.06); }
.data-table .cell-main { color: var(--text-primary); font-weight: 500; }
.data-table .cell-sub { color: var(--text-tertiary); font-size: 12px; }

/* 表单 */
.form-field { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
}
.form-label .req { color: var(--danger); margin-left: 2px; }
.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 9px 12px;
  background: var(--bg-input);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  transition: all 0.18s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(91,140,255,0.15);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239fb0d4' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 30px;
}

/* 搜索框 */
.search-box {
  position: relative;
  width: 240px;
}
.search-box input {
  width: 100%;
  padding: 8px 12px 8px 32px;
  background: var(--bg-input);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
}
.search-box input:focus { outline: none; border-color: var(--brand-blue); }
.search-box::before {
  content: '';
  position: absolute;
  left: 10px; top: 50%;
  transform: translateY(-50%);
  width: 14px; height: 14px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239fb0d4' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='M21 21l-4.35-4.35'/%3E%3C/svg%3E") center/contain no-repeat;
}

/* 标签 / 徽章 */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  line-height: 1.4;
}
.tag-success { background: rgba(52,211,153,0.15); color: var(--success); }
.tag-warning { background: rgba(251,191,36,0.15); color: var(--warning); }
.tag-danger { background: rgba(248,113,113,0.15); color: var(--danger); }
.tag-info { background: rgba(96,165,250,0.15); color: var(--info); }
.tag-neutral { background: rgba(159,176,212,0.12); color: var(--text-secondary); }
.tag-purple { background: rgba(168,85,247,0.15); color: var(--brand-purple); }

.tag-dot {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}
.tag-dot::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* 状态指示 */
.status-dot {
  display: inline-block;
  width: 8px; height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}
.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.warn { background: var(--warning); box-shadow: 0 0 6px var(--warning); }
.status-dot.offline { background: var(--text-disabled); }
.status-dot.danger { background: var(--danger); box-shadow: 0 0 6px var(--danger); }

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-top: 1px solid var(--border-subtle);
  font-size: 12px;
  color: var(--text-secondary);
}
.page-nums { display: flex; gap: 4px; }
.page-nums button {
  min-width: 28px; height: 28px;
  border-radius: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  transition: all 0.15s;
}
.page-nums button:hover { background: var(--bg-card); color: var(--text-primary); }
.page-nums button.active {
  background: var(--brand-gradient);
  color: #fff;
}

/* 抽屉 */
.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s;
}
.drawer-mask.open { opacity: 1; visibility: visible; }

.drawer {
  position: fixed;
  top: 0; right: 0;
  height: 100vh;
  width: 480px;
  max-width: 90vw;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border-default);
  z-index: 201;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.drawer-title { font-size: 16px; font-weight: 600; }
.drawer-close {
  width: 28px; height: 28px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  font-size: 18px;
  transition: all 0.15s;
}
.drawer-close:hover { background: var(--bg-card); color: var(--text-primary); }
.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}
.drawer-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* 详情行 */
.detail-list { display: flex; flex-direction: column; gap: 14px; }
.detail-row {
  display: flex;
  font-size: 13px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.detail-row:last-child { border-bottom: none; padding-bottom: 0; }
.detail-row .dl {
  width: 100px;
  color: var(--text-tertiary);
  flex-shrink: 0;
}
.detail-row .dr { color: var(--text-primary); flex: 1; word-break: break-all; }

/* 进度条 */
.progress {
  height: 6px;
  background: rgba(91,140,255,0.1);
  border-radius: 3px;
  overflow: hidden;
}
.progress-bar {
  height: 100%;
  background: var(--brand-gradient);
  border-radius: 3px;
  transition: width 0.4s;
}
.progress-bar.success { background: linear-gradient(90deg, #34d399, #10b981); }
.progress-bar.warning { background: linear-gradient(90deg, #fbbf24, #f59e0b); }
.progress-bar.danger { background: linear-gradient(90deg, #f87171, #ef4444); }

/* 开关 */
.switch {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}
.switch input { display: none; }
.switch .track {
  width: 36px; height: 20px;
  background: rgba(80,120,200,0.2);
  border-radius: 10px;
  position: relative;
  transition: background 0.2s;
}
.switch .track::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 16px; height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.2s;
}
.switch input:checked + .track { background: var(--brand-gradient); }
.switch input:checked + .track::after { transform: translateX(16px); }

/* 树形 */
.tree { font-size: 13px; }
.tree-node { margin-bottom: 2px; }
.tree-row {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s;
}
.tree-row:hover { background: var(--bg-card); }
.tree-row .toggle {
  width: 14px; height: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--text-tertiary);
  transition: transform 0.15s;
  font-size: 10px;
}
.tree-node.collapsed > .tree-row .toggle { transform: rotate(-90deg); }
.tree-row .node-icon {
  width: 14px; height: 14px;
  color: var(--brand-blue);
}
.tree-row .node-label { flex: 1; }
.tree-row .node-tag {
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 3px;
  background: rgba(91,140,255,0.12);
  color: var(--brand-blue);
}
.tree-children {
  padding-left: 18px;
  overflow: hidden;
}
.tree-node.collapsed > .tree-children { display: none; }

/* 复选框 */
.checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 13px;
}
.checkbox input { display: none; }
.checkbox .box {
  width: 16px; height: 16px;
  border: 1.5px solid var(--border-strong);
  border-radius: 4px;
  position: relative;
  transition: all 0.15s;
  flex-shrink: 0;
}
.checkbox input:checked + .box {
  background: var(--brand-gradient);
  border-color: transparent;
}
.checkbox input:checked + .box::after {
  content: '';
  position: absolute;
  left: 4px; top: 1px;
  width: 4px; height: 8px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.checkbox.indeterminate .box {
  background: var(--brand-gradient);
  border-color: transparent;
}
.checkbox.indeterminate .box::after {
  content: '';
  position: absolute;
  left: 3px; top: 6px;
  width: 8px; height: 2px;
  background: #fff;
}

/* 网格工具类 */
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.flex { display: flex; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-16 { margin-top: 16px; }
.mb-16 { margin-bottom: 16px; }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-sm { font-size: 12px; }
.text-lg { font-size: 16px; }
.fw-600 { font-weight: 600; }

/* 空状态 */
.empty {
  padding: 48px 24px;
  text-align: center;
  color: var(--text-tertiary);
}
.empty .empty-icon {
  width: 56px; height: 56px;
  margin: 0 auto 12px;
  opacity: 0.4;
}

/* 提示横幅 */
.alert-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 18px;
  font-size: 13px;
}
.alert-banner.warning {
  background: rgba(251,191,36,0.1);
  border: 1px solid rgba(251,191,36,0.3);
  color: #fcd34d;
}
.alert-banner.info {
  background: rgba(96,165,250,0.1);
  border: 1px solid rgba(96,165,250,0.3);
  color: var(--info);
}
.alert-banner.danger {
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.3);
  color: #fca5a5;
}
.alert-banner .alert-icon { font-size: 16px; }
.alert-banner .alert-action {
  margin-left: auto;
  font-size: 12px;
  color: inherit;
  text-decoration: underline;
  cursor: pointer;
}

/* Sparkline 迷你图 */
.sparkline { display: inline-block; vertical-align: middle; }

/* 头像组 */
.avatar-stack { display: inline-flex; }
.avatar-stack .avatar-mini {
  width: 24px; height: 24px;
  border-radius: 50%;
  background: var(--brand-gradient);
  border: 2px solid var(--bg-base);
  margin-left: -6px;
  font-size: 10px;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
}
.avatar-stack .avatar-mini:first-child { margin-left: 0; }
.avatar-stack .avatar-more {
  background: var(--bg-card);
  color: var(--text-secondary);
  border: 2px solid var(--bg-base);
}

/* Tab */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 16px;
}
.tab {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.18s;
}
.tab:hover { color: var(--text-primary); }
.tab.active {
  color: var(--brand-blue);
  border-bottom-color: var(--brand-blue);
}

/* 工具类 */
.text-ellipsis {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.divider { height: 1px; background: var(--border-subtle); margin: 16px 0; }