/* ============================================================
   VPN Server Manager - 完整样式
   ============================================================ */

/* CSS Variables & Reset */
:root {
  --bg-primary: #0f1923;
  --bg-secondary: #1a2732;
  --bg-sidebar: #111d27;
  --bg-card: #1e2d3d;
  --bg-input: #152230;
  --bg-hover: #1f3142;
  --bg-modal: #162330;
  --border: #253544;
  --border-light: #2e4052;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-light: rgba(59,130,246,0.15);
  --success: #22c55e;
  --success-bg: rgba(34,197,94,0.15);
  --warning: #f59e0b;
  --warning-bg: rgba(245,158,11,0.15);
  --danger: #ef4444;
  --danger-bg: rgba(239,68,68,0.15);
  --info: #06b6d4;
  --sidebar-width: 260px;
  --sidebar-collapsed: 64px;
  --header-height: 56px;
  --radius: 8px;
  --radius-sm: 6px;
  --radius-lg: 12px;
  --shadow: 0 4px 24px rgba(0,0,0,0.3);
  --transition: 0.2s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
  height: 100vh;
}

/* ============================================================
   Layout
   ============================================================ */
.app { display: flex; height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  transition: width var(--transition);
  position: relative;
  z-index: 100;
  flex-shrink: 0;
  overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }

.sidebar-logo {
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 10px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.sidebar-logo .icon { font-size: 24px; flex-shrink: 0; }
.sidebar-logo .text {
  font-weight: 700; font-size: 15px; white-space: nowrap;
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.sidebar.collapsed .sidebar-logo .text { display: none; }

.sidebar-nav {
  flex: 1; overflow-y: auto; overflow-x: hidden;
  padding: 8px 0;
}
.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

/* Nav Items */
.nav-section { margin-bottom: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 16px; cursor: pointer;
  color: var(--text-secondary); font-size: 13px;
  transition: all var(--transition); white-space: nowrap;
  border-left: 3px solid transparent;
  position: relative;
}
.nav-item:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-item.active {
  color: var(--accent); background: var(--accent-light);
  border-left-color: var(--accent);
}
.nav-item .icon { font-size: 18px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-item .icon svg { display: inline-block; vertical-align: middle; }

/* SVG icon alignment */
.icon svg { display: inline-block; vertical-align: middle; }
.nav-item .text { flex: 1; }
.nav-item .badge {
  font-size: 10px; padding: 2px 6px; border-radius: 10px;
  background: var(--accent-light); color: var(--accent);
}
.nav-item .arrow { font-size: 12px; transition: transform var(--transition); }
.nav-item.expanded .arrow { transform: rotate(90deg); }

.nav-children { overflow: hidden; max-height: 0; transition: max-height 0.3s ease; }
.nav-children.show { max-height: 500px; }
.nav-child {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 16px 8px 48px; cursor: pointer;
  color: var(--text-muted); font-size: 12px;
  transition: all var(--transition); white-space: nowrap;
}
.nav-child:hover { color: var(--text-primary); background: var(--bg-hover); }
.nav-child.active { color: var(--accent); background: var(--accent-light); }

.sidebar.collapsed .nav-item .text,
.sidebar.collapsed .nav-item .arrow,
.sidebar.collapsed .nav-children { display: none; }
.sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 10px 8px;
}
.sidebar.collapsed .nav-item .badge {
  position: absolute;
  top: 2px;
  right: 4px;
  font-size: 9px;
  padding: 1px 4px;
  min-width: 14px;
  text-align: center;
  line-height: 1.2;
}

.sidebar-user {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 30;
}
.sidebar-user-trigger {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border);
  background: var(--bg-hover);
  color: var(--text-secondary);
  border-radius: 6px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 14px;
}
.sidebar-user-trigger:hover,
.sidebar-user.open .sidebar-user-trigger {
  color: var(--text-primary);
  border-color: var(--border-light);
  background: var(--bg-hover);
}
.sidebar-user-trigger .text,
.sidebar-user-trigger .arrow { display: none; }
.sidebar-user-panel {
  position: absolute;
  left: 0;
  bottom: 40px;
  width: 236px;
  display: none;
  padding: 8px;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  background: var(--bg-modal);
  box-shadow: 0 14px 34px rgba(0,0,0,.38);
  z-index: 20;
}
.sidebar-user.open .sidebar-user-panel { display: block; }
.sidebar-user-panel-title {
  padding: 6px 8px 8px;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
}
.sidebar-user-action {
  width: 100%;
  border: 0;
  background: transparent;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border-radius: 6px;
  font-size: 12px;
  text-align: left;
  cursor: pointer;
}
.sidebar-user-action:hover,
.sidebar-user-action.active {
  color: var(--accent);
  background: var(--accent-light);
}
.sidebar-user-divider {
  height: 1px;
  background: var(--border);
  margin: 6px 0;
}
.sidebar.collapsed .sidebar-user {
  left: 8px;
}
.sidebar.collapsed .sidebar-user-panel {
  display: none;
}

.sidebar-toggle {
  position: absolute; bottom: 12px; right: 12px;
  width: 28px; height: 28px; border-radius: 6px;
  background: var(--bg-hover); border: 1px solid var(--border);
  color: var(--text-muted); cursor: pointer; font-size: 14px;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.sidebar-toggle:hover { color: var(--text-primary); }

/* Main */
.main {
  flex: 1; display: flex; flex-direction: column;
  overflow: hidden; min-width: 0;
}

/* Header */
.header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 20px; flex-shrink: 0;
}
.header-left { display: flex; align-items: center; gap: 16px; }
.breadcrumb { font-size: 13px; color: var(--text-muted); }
.breadcrumb span { color: var(--text-primary); }
.header-right { display: flex; align-items: center; gap: 12px; }
.app-version {
  height: 34px;
  padding: 0 10px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  line-height: 1;
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  white-space: nowrap;
}
.header-btn {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text-secondary); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; transition: all var(--transition);
}
.header-btn:hover { color: var(--text-primary); border-color: var(--border-light); }
.header-btn.is-refreshing {
  color: var(--accent);
  border-color: rgba(59,130,246,.55);
  background: rgba(59,130,246,.12);
  cursor: wait;
}
.header-btn.is-refreshing svg,
.header-btn.is-refreshing i {
  animation: globalRefreshSpin .7s linear infinite;
}

/* Content */
.content {
  flex: 1; overflow-y: auto; padding: 20px;
}
.content::-webkit-scrollbar { width: 6px; }
.content::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.page { display: none; }
.page.active { display: block; }
.page.global-refresh-active {
  animation: globalRefreshPulse .28s ease;
}

@keyframes globalRefreshSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes globalRefreshPulse {
  0% { opacity: .72; transform: translateY(1px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Cards & Panels
   ============================================================ */
.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 20px;
}

.stat-cards {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-bottom: 20px;
}
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.stat-card .label { font-size: 12px; color: var(--text-muted); margin-bottom: 8px; line-height:1.2; }
.stat-card .value { font-size: 28px; font-weight: 700; line-height:1; }
.stat-card .sub { font-size: 11px; color: var(--text-muted); margin-top: 4px; line-height:1.2; }
/* 帮助图标 + tooltip */
.help-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 10px;
  font-weight: 700;
  cursor: help;
  position: relative;
  flex-shrink: 0;
  transition: all var(--transition);
  line-height: 1;
}
.help-icon:hover { background: var(--accent-light); border-color: var(--accent); color: var(--accent); }
.help-icon::after {
  content: attr(data-tip);
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-size: 11px;
  font-weight: 400;
  color: var(--text-secondary);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.15s ease;
  z-index: 10;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  line-height: 1.5;
}
.help-icon:hover::after { opacity: 1; transform: translateY(0); }

/* Toolbar */
.toolbar {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.toolbar-spacer { flex: 1; }
/* Toolbar 筛选控件统一风格：select 下拉框与 multi-filter-btn 视觉一致 */
.toolbar select.input {
  padding:4px 28px 4px 8px;font-size:12px;
  color:var(--text-secondary);
}
.toolbar select.input:hover {
  border-color:var(--accent);color:var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-size: 13px; cursor: pointer; border: 1px solid transparent;
  transition: all var(--transition); white-space: nowrap;
  font-family: inherit;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; }
.btn-warning { background: var(--warning); color: #000; }
.btn-warning:hover { background: #d97706; }
.btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger-bg); }
.btn-outline {
  background: transparent; color: var(--text-secondary);
  border-color: var(--border);
}
.btn-outline:hover { color: var(--text-primary); border-color: var(--border-light); background: var(--bg-hover); }
.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); background: var(--bg-hover); }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.btn-xs { padding: 2px 8px; font-size: 11px; border-radius: 4px; }
.btn-group { display: flex; gap: 0; }
.btn-group .btn { border-radius: 0; }
.btn-group .btn:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.btn-group .btn:last-child { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }

/* Inputs */
.input {
  padding: 8px 12px; background: var(--bg-input);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text-primary); font-size: 13px;
  outline: none; transition: border-color var(--transition);
  font-family: inherit;
}
.input:focus { border-color: var(--accent); }
.input::placeholder { color: var(--text-muted); }
select.input {
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding-right: 32px;
  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='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 8px center;
  background-size: 14px;
}
select.input:hover {
  border-color: var(--border-light);
}
select.input option {
  background: var(--bg-card);
  color: var(--text-primary);
}

.search-box {
  position: relative;
}
.search-box .input { padding-left: 32px; width: 240px; }
.search-box .icon {
  position: absolute; left: 10px; top: 50%;
  transform: translateY(-50%); font-size: 14px;
  color: var(--text-muted); pointer-events: none;
}

/* Tags & Badges */
.tag {
  display: inline-flex; align-items: center; gap: 2px;
  padding: 2px 8px; border-radius: 4px;
  font-size: 11px; font-weight: 500;
}
.tag-success { background: var(--success-bg); color: var(--success); }
.tag-warning { background: var(--warning-bg); color: var(--warning); }
.tag-danger { background: var(--danger-bg); color: var(--danger); }
.tag-info { background: var(--accent-light); color: var(--accent); }
.tag-default { background: rgba(148,163,184,0.15); color: var(--text-secondary); }

.protocol-badge {
  display: inline-flex; align-items: flex-start;
  font-weight: 600; font-size: 12px; position: relative;
  color: var(--info);
}
.protocol-badge sup {
  font-size: 9px; top: -2px; position: relative;
}

/* Filter chips */
.filter-chips {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding: 6px 12px;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}
.filter-chip {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 8px;
  font-size: 11px;
  border-radius: 4px;
  background: var(--accent-light);
  color: var(--accent);
  cursor: default;
}
.filter-chip .chip-remove {
  cursor: pointer;
  opacity: 0.6;
  font-size: 13px;
  line-height: 1;
}
.filter-chip .chip-remove:hover {
  opacity: 1;
}
.filter-chip-label {
  color: var(--text-muted);
  font-size: 10px;
  margin-right: 2px;
}

/* ============================================================
   Table
   ============================================================ */
.table-wrapper {
  border: 1px solid var(--border); border-radius: var(--radius-lg);
  overflow: hidden;
}
.table-container {
  overflow-x: auto;
}
.table-container::-webkit-scrollbar { height: 6px; }
.table-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

table {
  width: 100%; border-collapse: collapse; font-size: 12px;
}
thead { background: var(--bg-secondary); }
thead th {
  padding: 10px 8px; text-align: left; font-weight: 600;
  color: var(--text-secondary); font-size: 13px;
  white-space: nowrap; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 1;
  background: var(--bg-secondary);
}
/* 操作列固定在右侧 - 最小宽度（使用 width:1px 让表格弹性收缩列宽）
   使用 > 子代选择器确保仅作用于主表格的一级 tr，不穿透至嵌套子表（dim-table） */
.table-container > table > thead > tr > th:last-child,
.table-container > table > tbody > tr > td:last-child {
  position: sticky;
  right: 0;
  z-index: 2;
  width: 1px;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
}
.table-container > table > thead > tr > th:last-child {
  z-index: 3; /* 高于数据行，保证表头始终盖住数据 */
}
.table-container > table > tbody > tr > td:last-child {
  box-shadow: -4px 0 8px rgba(0,0,0,0.2);
  z-index: 1; /* 数据行操作列 z-index 低于下拉菜单 */
}
.table-container > table > tbody > tr.dropdown-open-row > td:last-child,
.table-container > table > tbody > tr > td.dropdown-open-cell {
  z-index: 10020;
}
.table-container-plain > table > thead > tr > th:last-child,
.table-container-plain > table > tbody > tr > td:last-child {
  position: static;
  right: auto;
  z-index: auto;
  width: auto;
  background: transparent;
  border-left: none;
  text-align: left;
  vertical-align: inherit;
  white-space: nowrap;
  box-shadow: none;
}
.table-container-plain > table > thead > tr > th:last-child {
  background: var(--bg-secondary);
}
.table-container-plain > table > tbody > tr > td:last-child {
  box-shadow: none;
}
tbody td {
  padding: 8px; border-bottom: 1px solid var(--border);
  white-space: nowrap; color: var(--text-primary);
}
tbody tr:hover { background: var(--bg-hover); }
tbody tr:last-child td { border-bottom: none; }

/* 成功率统计 — 同统计时间分组交替背景色（仅主表格行，不穿透嵌套子表） */
.sr-time-a > td { background: transparent; }
.sr-time-b > td { background: rgba(255,255,255,0.07); }
.sr-time-a:hover > td,
.sr-time-b:hover > td { background: var(--bg-hover) !important; }

.table-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; background: var(--bg-secondary);
  border-top: 1px solid var(--border); font-size: 12px;
  color: var(--text-muted);
}
.pagination { display: flex; gap: 4px; }
.page-btn {
  width: 30px; height: 30px; border-radius: 6px;
  border: 1px solid var(--border); background: transparent;
  color: var(--text-secondary); cursor: pointer;
  font-size: 12px; transition: all var(--transition);
}
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Page Size Selector */
.page-size-selector {
  display: flex; align-items: center;
}
.page-size-selector label {
  color: var(--text-muted); white-space: nowrap;
}

/* ============================================================
   Modal
   ============================================================ */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.6);
  z-index: 1000; display: flex; align-items: flex-start;
  justify-content: center; backdrop-filter: blur(2px);
  animation: fadeIn 0.15s ease;
  padding-top: 6vh;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg-modal); border: 1px solid var(--border);
  border-radius: var(--radius-lg); width: 90%; max-width: 700px;
  max-height: 85vh; display: flex; flex-direction: column;
  box-shadow: var(--shadow);
  animation: slideUp 0.2s ease;
}
@keyframes slideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-lg { max-width: 900px; }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close {
  width: 32px; height: 32px; border-radius: 6px;
  background: transparent; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 18px; display: flex; align-items: center;
  justify-content: center; transition: all var(--transition);
}
.modal-close:hover { color: var(--text-primary); background: var(--bg-hover); }

.modal-body {
  flex: 1; overflow-y: auto; padding: 20px;
}
.modal-body::-webkit-scrollbar { width: 6px; }
.modal-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

.modal-footer {
  display: flex; align-items: center; justify-content: flex-end;
  gap: 10px; padding: 16px 20px;
  border-top: 1px solid var(--border); flex-shrink: 0;
}

/* Forms */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 12px; color: var(--text-secondary); font-weight: 500;
}
.form-group .required::after { content: ' *'; color: var(--danger); }
.form-group .hint { font-size: 11px; color: var(--text-muted); }

/* Tabs */
.tabs {
  display: flex; gap: 0; border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}
.tab {
  padding: 8px 16px; cursor: pointer; font-size: 13px;
  color: var(--text-muted); border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.tab:hover { color: var(--text-primary); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Dropdown Menu */
.dropdown { position: relative; display: inline-block; }
.dropdown-dots { padding: 4px 6px !important; min-width: unset !important; justify-content: center; }
.dropdown-menu {
  position: fixed; z-index: 9999;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); min-width: 180px;
  box-shadow: var(--shadow); display: none; padding: 4px 0;
}
.dropdown-menu.show { display: block; }
.dropdown-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; cursor: pointer; font-size: 12px;
  color: var(--text-secondary); transition: all var(--transition);
}
.dropdown-item:hover { color: var(--text-primary); background: var(--bg-hover); }
.dropdown-item.danger { color: var(--danger); }

/* 设置状态 hover 子菜单 */
.submenu-trigger { position: relative; }
.submenu-trigger .submenu-arrow { margin-left: auto; font-size: 10px; color: var(--text-muted); transition: transform var(--transition); }
.submenu-trigger:hover .submenu-arrow { transform: rotate(-90deg); }
.submenu-trigger .submenu {
  display: none;
  position: absolute;
  right: 100%;
  top: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 130px;
  box-shadow: var(--shadow);
  padding: 4px 0;
  z-index: 10000;
}
.submenu-trigger:hover .submenu { display: block; }
.submenu-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 14px; cursor: pointer; font-size: 12px;
  color: var(--text-secondary); transition: all var(--transition);
  white-space: nowrap;
}
.submenu-item:hover { color: var(--text-primary); background: var(--bg-hover); }

/* Toast */
.toast-container {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  z-index: 9999; display: flex; flex-direction: column;
  align-items: center; gap: 8px; pointer-events: none;
}
.toast {
  padding: 12px 24px; border-radius: var(--radius-sm);
  font-size: 13px; animation: slideDown 0.35s ease;
  display: flex; align-items: center; gap: 8px;
  box-shadow: var(--shadow); max-width: 480px;
  pointer-events: auto;
}
@keyframes slideDown { from { transform: translateY(-100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.toast-success { background: #14532d; color: var(--success); border: 1px solid #166534; }
.toast-error { background: #450a0a; color: var(--danger); border: 1px solid #7f1d1d; }
.toast-info { background: #0c1929; color: var(--accent); border: 1px solid #1e3a5f; }

/* Empty State */
.empty-state { text-align: center; padding: 40px; color: var(--text-muted); }
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }
.empty-state p { font-size: 14px; }

/* SSH Quick Commands */
.ssh-panel {
  background: #0d1117; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 12px; margin-top: 8px;
  font-family: 'SF Mono', 'Fira Code', monospace; font-size: 12px;
}
.ssh-cmd {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 8px; border-radius: 4px; cursor: pointer;
  color: var(--text-secondary); transition: all var(--transition);
}
.ssh-cmd:hover { color: var(--text-primary); background: var(--bg-hover); }
.ssh-cmd code { color: var(--success); font-size: 11px; }

/* Progress */
.progress-bar {
  width: 100%; height: 6px; background: var(--bg-input);
  border-radius: 3px; overflow: hidden;
}
.progress-fill {
  height: 100%; border-radius: 3px; transition: width 0.5s ease;
}
.progress-fill.success { background: var(--success); }
.progress-fill.warning { background: var(--warning); }
.progress-fill.danger { background: var(--danger); }

/* Status Dot */
.status-dot {
  display: inline-block; width: 8px; height: 8px;
  border-radius: 50%; margin-right: 6px;
  transition: none !important;
}
.status-dot.online { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.standby { background: var(--info); box-shadow: 0 0 6px var(--info); }
.status-dot.degraded { background: var(--warning); box-shadow: 0 0 6px var(--warning); }
.status-dot.offline { background: var(--text-muted); }
.status-dot.maintenance { background: var(--warning); box-shadow: 0 0 6px var(--warning); }
.status-dot.archived { background: var(--danger); }

/* Checkbox */
.checkbox-cell { width: 40px; text-align: center; }
input[type="checkbox"] {
  accent-color: var(--accent); cursor: pointer;
}

/* Placeholder Page */
.placeholder-page {
  display: flex; flex-direction: column; align-items: center;
  justify-content: center; height: 60vh; color: var(--text-muted);
}
.placeholder-page .icon { font-size: 64px; margin-bottom: 16px; display:flex; align-items:center; justify-content:center; }
.placeholder-page .icon svg { opacity: 0.3; }
.placeholder-page h2 { font-size: 20px; margin-bottom: 8px; }
.placeholder-page p { font-size: 14px; }

/* Column Settings */
.col-settings-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 8px; border-bottom: 1px solid var(--border);
  font-size: 13px; color: var(--text-secondary);
}
.col-settings-item:last-child { border-bottom: none; }
.col-settings-drag {
  font-size: 16px; color: var(--text-muted); cursor: grab;
  user-select: none; width: 20px; text-align: center;
}
.col-settings-item label { flex: 1; cursor: pointer; }
.col-settings-item label input { margin-right: 6px; }

/* Sortable table header */
.sortable-th { cursor: pointer; user-select: none; }
.sortable-th:hover { color: var(--accent); }
th.sortable-th { white-space: nowrap; }

/* Filter row in table header */
.filter-row th {
  padding: 4px 8px;
  background: var(--bg-primary);
}
.filter-row:first-of-type th {
  border-bottom: 1px solid var(--border);
}
/* 筛选行最后一列（空列）不固定 */
.filter-row th:last-child {
  position: static !important;
  box-shadow: none;
  border-left: none;
  width: auto;
  min-width: 0;
  max-width: none;
}
.filter-input {
  width: 100%;
  padding: 4px 6px !important;
  font-size: 11px !important;
  min-width: 60px;
  box-sizing: border-box;
}

/* Hidden column filter row - 与可见列筛选行样式一致 */
.filter-row-hidden th {
  padding: 4px 8px !important;
  background: var(--bg-primary) !important;
  border-bottom: 1px solid var(--border) !important;
}
.filter-row-hidden .filter-input:focus {
  border-color: var(--accent) !important;
}

/* 多选列筛选下拉框 */
.multi-filter-btn {
  display:inline-flex;align-items:center;gap:4px;
  padding:4px 8px;font-size:13px;cursor:pointer;
  border:1px solid var(--border);border-radius:4px;
  background:var(--bg-input);color:var(--text-secondary);
  white-space:nowrap;max-width:100%;box-sizing:border-box;
  line-height:1.4;position:relative;
}
.multi-filter-btn:hover { border-color:var(--accent);color:var(--text-primary); }
.multi-filter-btn.active { border-color:var(--accent);color:var(--accent);background:var(--accent-light); }
.multi-filter-dropdown {
  position:absolute;top:100%;left:0;z-index:100;
  min-width:140px;max-height:200px;overflow-y:auto;
  background:var(--bg-card);border:1px solid var(--border);
  border-radius:6px;box-shadow:0 4px 16px rgba(0,0,0,0.15);
  padding:6px 0;display:none;
}
.multi-filter-dropdown.floating {
  position: fixed;
  z-index: 10060;
  box-shadow: 0 10px 28px rgba(0,0,0,0.35);
}
.multi-filter-dropdown.show { display:block; }
.multi-filter-item {
  display:flex;align-items:center;gap:6px;
  padding:5px 10px;font-size:12px;cursor:pointer;
  color:var(--text-primary);white-space:nowrap;
}
.multi-filter-item:hover { background:var(--bg-input); }
.multi-filter-item input[type="checkbox"] {
  margin:0;accent-color:var(--accent);flex-shrink:0;
}
.option-maintain-item {
  display:flex;align-items:center;gap:8px;padding:6px 8px;margin-bottom:6px;background:var(--bg-input);border-radius:var(--radius-sm);border:1px solid var(--border);
}

/* 全选下拉 */
.select-all-dropdown {
  display:none;position:absolute;top:100%;left:-4px;z-index:100;
  background:var(--bg-modal);border:1px solid var(--border);border-radius:var(--radius-sm);
  min-width:150px;padding:4px 0;box-shadow:0 8px 24px rgba(0,0,0,0.4);
}
.select-all-dropdown.show { display:block; }
.select-all-item {
  padding:8px 14px;font-size:12px;cursor:pointer;color:var(--text-primary);
  white-space:nowrap;display:flex;align-items:center;gap:6px;
}
.select-all-item:hover { background:var(--bg-hover); }
.select-all-item.danger { color:var(--danger); }
.checkbox-cell { width:40px;text-align:center;padding:8px 4px !important; }
.checkbox-cell input[type="checkbox"] { margin:0;cursor:pointer;accent-color:var(--accent); }

/* ============================================================
   Success Rate Expand Row (维度分解详情)
   ============================================================ */
.expand-row > td {
  padding: 8px !important;
  background: var(--bg-input);
  min-height: 60px;
}
.expand-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  font-size: 12px;
  min-width: 0;
}
.dim-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  min-width: 0;
}
.dim-card-header {
  font-weight: 600;
  font-size: 13px;
  color: var(--accent);
  padding: 5px 8px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-primary);
  letter-spacing: 0.3px;
}
.dim-empty {
  padding: 16px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* 维度子表 — 浏览器自动分配列宽 + 字号+2 */
.dim-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.dim-table thead { background: transparent; }
.dim-table thead th {
  position: static;
  background: transparent;
  border-bottom: 1px solid var(--border);
  font-weight: 500;
}
.dim-tr { }
.dim-tc {
  padding: 4px 6px;
  text-align: left;
  white-space: nowrap;
  color: var(--text-primary);
  border-bottom: none;
  width: 1px; /* 让浏览器按内容最小宽度分配 */
}
.dim-tc.dim-tc-key { width: auto; min-width: 28px; }
.dim-tr:last-child .dim-tc { border-bottom: none; }
.dim-tr:hover .dim-tc { background: rgba(255,255,255,0.03); }
.dim-th-key { font-size: 12px; color: var(--text-muted); white-space: nowrap; }
.dim-th-num { font-size: 12px; color: var(--text-muted); text-align: left; white-space: nowrap; }
.dim-th-pct { font-size: 12px; color: var(--text-muted); text-align: left; white-space: nowrap; }
.dim-table thead th.sortable { cursor: pointer; user-select: none; }
.dim-table thead th.sortable:hover { color: var(--accent); }
.dim-tc-key { font-weight: 500; color: var(--text-primary); font-size: 13px; }
.dim-tc-num {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  text-align: left;
  font-weight: 500;
}
.dim-tc-pct {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 13px;
  text-align: left;
  font-weight: 600;
}