/* ============================================================
   RMQTT Dashboard — 全局样式
   ============================================================ */
:root {
  --bg: #0f1419;
  --bg-card: #1a1f2e;
  --bg-hover: #242b3d;
  --bg-sidebar: #141824;
  --text: #e1e8ed;
  --text-muted: #8899aa;
  --sidebar-text: #e1e8ed;  /* 侧栏文字不受亮色主题影响 */
  --border: #2a3245;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --green: #22c55e;
  --red: #ef4444;
  --orange: #f59e0b;
  --sidebar-w: 200px;
  --topbar-h: 56px;
  --radius: 8px;
  --tooltip-bg: #1a1f2e;
  --modal-overlay: rgba(0,0,0,.6);
}

/* ─── 亮色主题 ─── */
[data-theme="light"] {
  --bg: #f5f7fa;
  --bg-card: #ffffff;
  --bg-hover: #eef1f6;
  /* 侧栏和顶栏保持暗色 */
  --bg-sidebar: #141824;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --border: #e2e8f0;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --green: #16a34a;
  --red: #dc2626;
  --orange: #d97706;
  --tooltip-bg: #ffffff;
  --modal-overlay: rgba(0,0,0,.3);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

/* ─── 布局 ─── */
.app-layout { display: flex; height: 100vh; }
.sidebar {
  width: var(--sidebar-w);
  background: var(--bg-sidebar);
  display: flex; flex-direction: column;
  flex-shrink: 0;
}
.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}
.sidebar-header h2 { font-size: 20px; font-weight: 700; color: var(--accent); }
.sidebar-subtitle { font-size: 12px; color: var(--text-muted); }
.nav { flex: 1; padding: 12px 8px; }
.nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; margin-bottom: 2px;
  border-radius: var(--radius); color: var(--text-muted);
  text-decoration: none; font-size: 14px; transition: .15s;
}
.nav a:hover { background: var(--bg-hover); color: var(--text); }
.nav a.active { background: var(--accent); color: #fff; }
.nav-icon { font-size: 16px; width: 20px; text-align: center; }

.main-area { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar {
  height: var(--topbar-h); padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border); background: var(--bg-sidebar);
  flex-shrink: 0;
  color: var(--sidebar-text);
}
.page-title { font-size: 16px; font-weight: 600; line-height: 1; }
.topbar-right { display: flex; align-items: center; gap: 8px; }

.content {
  flex: 1; overflow-y: auto; padding: 24px;
}

/* ─── 组件通用 ─── */
.btn-icon {
  background: transparent; border: 1px solid var(--border);
  color: var(--text-muted); width: 34px; height: 34px; border-radius: var(--radius);
  cursor: pointer; font-size: 16px; display: flex; align-items: center; justify-content: center;
  transition: .15s;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text); }

/* 顶栏图标固定暗色（不随主题变化） */
.topbar .btn-icon {
  border-color: #2a3245;
  color: #8899aa;
}
.topbar .btn-icon:hover {
  background: rgba(255,255,255,0.08);
  color: var(--text);
}
/* 搜索按钮暂时禁用 */
.search-toggle.disabled {
  opacity: .35; cursor: not-allowed; pointer-events: none;
}
.node-badge {
  color: #fff; padding: 2px 10px;
  border-radius: 12px; font-size: 12px; font-weight: 600;
}
.node-badge.healthy { background: #22c55e; }
.node-badge.warning { background: #f59e0b; }
.node-badge.critical { background: #ef4444; }

/* ─── 指标卡片 ─── */
.metric-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px; margin-bottom: 24px;
}
.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.metric-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.metric-icon {
  font-size: 18px;
  width: 22px;
  text-align: center;
  line-height: 1;
}
.metric-label { font-size: 13px; color: var(--text-muted); }
.metric-value { font-size: 28px; font-weight: 700; color: var(--text); }
.metric-sub { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* 双指标组合卡 */
.metric-card.multi-metric {
  flex-direction: row;
  align-items: center;
  padding: 12px 0;
}
.metric-card-col {
  flex: 1;
  padding: 0 16px;
  min-width: 0;
}
.metric-card-col + .metric-card-col {
  border-left: 1px solid var(--border);
}

/* ─── 图表容器 ─── */
.chart-grid {
  display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-bottom: 24px;
}
.chart-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.chart-card h3 { font-size: 14px; margin-bottom: 12px; color: var(--text-muted); }
.chart-box { height: 200px; }

/* ─── 表格 ─── */
.table-wrap {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  margin-bottom: 24px;
}
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 16px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-size: 12px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; }
tr:hover td { background: var(--bg-hover); }
.status-online { color: var(--green); }
.status-offline { color: var(--red); }

/* ─── 表单 ─── */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 8px 12px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text); font-size: 14px;
}
.form-textarea { min-height: 120px; font-family: monospace; resize: vertical; }
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--accent);
}

/* ─── 原生日期选择器图标暗色适配 ─── */
.form-input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  cursor: pointer;
}
[data-theme="dark"] .form-input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  filter: invert(1);
}
[data-theme="light"] .form-input[type="datetime-local"]::-webkit-calendar-picker-indicator {
  filter: invert(0);
}
.btn {
  padding: 8px 20px; border: none; border-radius: var(--radius);
  font-size: 14px; cursor: pointer; transition: .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: .5; cursor: not-allowed; }

/* ─── 搜索栏 ─── */
.search-bar {
  display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px;
}
.search-bar .form-input { max-width: none; }
.search-row {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.search-advanced-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; color: var(--accent); cursor: pointer;
  padding: 4px 0; user-select: none;
}
.search-advanced-toggle:hover { opacity: .8; }
.search-advanced-arrow {
  font-size: 10px; transition: transform .15s;
}
.search-advanced-arrow.open {
  transform: rotate(90deg);
}
.search-advanced-badge {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 9px; background: var(--accent); color: #fff;
  font-size: 11px; font-weight: 500;
}
.search-advanced-panel {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
  display: flex; flex-direction: column; gap: 12px;
}
.filter-row {
  display: flex; flex-wrap: wrap; gap: 12px;
}
.filter-group {
  display: flex; flex-direction: column; gap: 4px;
  flex: 1; min-width: 180px;
}
.filter-label {
  font-size: 12px; color: var(--text-muted); margin-bottom: 4px;
}
.filter-check-input {
  display: flex; align-items: center; gap: 6px;
}
.filter-check-input input[type="checkbox"] {
  margin: 0; cursor: pointer;
}
.filter-check-input .form-input {
  flex: 1;
}
.filter-check-input .form-input:disabled {
  opacity: .45; cursor: not-allowed;
}

/* ─── 登录页 ─── */
.login-page {
  display: flex; align-items: center; justify-content: center;
  height: 100vh; background: var(--bg);
}
.login-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 40px; width: 380px;
}
.login-card h1 { text-align: center; margin-bottom: 4px; color: var(--accent); }
.login-card p { text-align: center; color: var(--text-muted); margin-bottom: 28px; font-size: 13px; }
.login-card .btn { width: 100%; }

/* ─── 密码输入切换 ─── */
.password-wrapper {
  position: relative;
}
.password-wrapper .form-input {
  padding-right: 36px;
}
.password-toggle {
  position: absolute; right: 4px; top: 50%; transform: translateY(-50%);
  background: none; border: none; cursor: pointer; padding: 4px;
  font-size: 16px; line-height: 1; color: var(--text-muted);
  transition: color .15s;
}
.password-toggle:hover { color: var(--text); }
.password-toggle:focus { outline: none; }

/* ─── 语言选择器（自定义下拉） ─── */
.lang-select-wrapper {
  position: relative;
}
.lang-select-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  background: #141824;
  border: 1px solid #2a3245;
  color: #e1e8ed;
  padding: 0 8px;
  font-size: 13px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: .15s;
  width: 90px;
  height: 32px;
  justify-content: space-between;
}
.lang-select-trigger:hover {
  border-color: #8899aa;
}
.lang-select-arrow {
  font-size: 9px;
  margin-left: 2px;
  opacity: 0.6;
}
.lang-select-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  min-width: calc(100% + 20px);
  background: #1a1f2e;
  border: 1px solid #2a3245;
  border-radius: var(--radius);
  z-index: 300;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  overflow: hidden;
}
.lang-select-item {
  display: block;
  width: 100%;
  padding: 8px 14px;
  background: transparent;
  border: none;
  color: #e1e8ed;
  font-size: 13px;
  cursor: pointer;
  text-align: left;
  transition: .08s;
}
.lang-select-item:hover {
  background: rgba(59, 130, 246, 0.1);
}
.lang-select-item.active {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent);
  font-weight: 600;
}

/* ─── 分页 ─── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px;
}
.page-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  padding: 6px 12px;
  cursor: pointer;
  font-size: 13px;
  transition: .15s;
}
.page-btn:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.page-btn:disabled {
  opacity: .3;
  cursor: not-allowed;
}
.page-info {
  font-size: 13px;
  color: var(--text-muted);
  min-width: 60px;
  text-align: center;
}
.table-footer {
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ─── 响应式 ─── */

/* ─── 概览页增强 ─── */
.overview-top {
  display: grid;
  grid-template-columns: 180px 380px 1fr;
  gap: 16px;
  margin-bottom: 24px;
}
.gauge-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 200px;
  padding: 8px;
}
.msg-rate-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  height: 200px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}
.msg-rate-top {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.msg-rate-bottom {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.msg-rate-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.msg-rate-label {
  font-size: 13px;
  color: var(--text);
  font-weight: 600;
}
.msg-rate-value {
  font-size: 18px;
  color: var(--text);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.msg-rate-bars {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 40px;
  padding: 0 1px;
}
.msg-rate-bars.in .msg-rate-bar { background: #3b82f6; }
.msg-rate-bars.out .msg-rate-bar { background: #6366f1; }
.msg-rate-bar {
  flex: 1;
  min-width: 3px;
  border-radius: 1px 1px 0 0;
  transition: height 0.2s ease;
}

/* ─── 底部累计统计栏 ─── */
.msg-rate-stats {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 6px;
  margin-top: auto;
}
.msg-rate-stat-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  white-space: nowrap;
}
.msg-rate-stat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-blue { background: #3b82f6; }
.dot-indigo { background: #6366f1; }
.dot-green { background: #22c55e; }
.stat-text {
  color: var(--text);
  font-weight: 600;
}

/* ─── 条形图浮动提示 ─── */
#msgRateTt {
  display: none;
  position: absolute;
  z-index: 50;
  background: var(--tooltip-bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 11px;
  color: var(--text);
  white-space: nowrap;
  text-align: right;
  pointer-events: none;
  transform: translateX(-50%) translateY(-100%);
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}
.overview-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 10px;
  margin-bottom: 0;
}
.overview-metrics .metric-card {
  padding: 12px 10px;
}
.overview-metrics .metric-card-header {
  margin-bottom: 4px;
  gap: 6px;
}
.overview-metrics .metric-icon {
  font-size: 15px;
  width: 18px;
}
.overview-metrics .metric-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}
.overview-metrics .metric-value {
  font-size: 28px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 节点信息卡片 */
.node-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}
.node-info-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  position: relative;
}
.node-info-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  color: var(--text);
}
.node-info-header h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}
.node-info-link {
  font-size: 13px;
  color: var(--accent);
  cursor: pointer;
}
.node-info-link:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}
.node-info-body {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 0;
}
.node-info-body + .node-info-body {
  border-top: 1px solid var(--border);
}
.node-info-icon {
  width: 80px;
  height: 80px;
  flex-shrink: 0;
}
.hexagon-icon {
  width: 100%;
  height: 100%;
}
.node-info-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}
.node-info-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
}
.node-info-label {
  color: var(--text-muted);
  white-space: nowrap;
}
.node-info-value {
  color: var(--text);
  font-weight: 600;
  white-space: nowrap;
  text-align: right;
}

/* 时间范围选择器 */
.chart-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}
.chart-toolbar-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-right: 4px;
}
.time-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  padding: 4px 12px;
  font-size: 12px;
  cursor: pointer;
  transition: .15s;
}
.time-btn:hover {
  background: var(--bg-hover);
  color: var(--text);
}
.time-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* 消息丢弃面板分段切换 */
.chart-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}
.chart-card-head h3 { margin-bottom: 0; }
.seg-tabs {
  display: flex;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2px;
  gap: 2px;
  flex-shrink: 0;
}
.seg-btn {
  background: transparent;
  border: none;
  border-radius: calc(var(--radius) - 3px);
  color: var(--text-muted);
  padding: 3px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: .15s;
  white-space: nowrap;
}
.seg-btn:hover { color: var(--text); background: var(--bg-hover); }
.seg-btn.active { background: var(--accent); color: #fff; }

/* 环形图区域 */
.ring-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}
.section-title {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 16px;
  font-weight: 600;
  white-space: nowrap;
}
.ring-layout {
  display: flex;
  align-items: center;
  gap: 24px;
}
.ring-chart-box {
  width: 260px;
  height: 220px;
  flex-shrink: 0;
}
.ring-legend {
  flex: 1;
}
.ring-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-size: 13px;
}
.ring-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.ring-name {
  color: var(--text-muted);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.ring-value {
  color: var(--text);
  font-weight: 600;
}
.ring-total {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0 0;
  margin-top: 4px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
}
.ring-total-value {
  color: var(--text);
  font-weight: 700;
  font-size: 15px;
}

/* 节点表可点击行 */
.clickable-row {
  cursor: pointer;
}

/* 模态弹窗 */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}
.modal-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 520px;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-header h3 {
  font-size: 16px;
  font-weight: 600;
}
.modal-close {
  font-size: 20px;
}
.modal-body {
  padding: 16px 20px;
}
.detail-table {
  width: 100%;
  border-collapse: collapse;
}
.detail-table tr td {
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.detail-table tr:last-child td {
  border-bottom: none;
}
.dt-label {
  color: var(--text-muted);
  width: 100px;
  font-weight: 500;
}
.modal-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  text-align: right;
}

/* ─── Payload 编辑框（延迟发布详情） ─── */
.payload-editor {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  max-height: 46vh;
  min-height: 220px;
  overflow: auto;
}
.payload-gutter {
  flex-shrink: 0;
  position: sticky;
  left: 0;
  padding: 8px 8px 8px 12px;
  text-align: right;
  color: var(--text-muted);
  background: var(--bg-hover);
  border-right: 1px solid var(--border);
  font-family: monospace;
  font-size: 12px;
  line-height: 1.5;
  user-select: none;
}
.payload-content {
  margin: 0;
  padding: 8px 12px;
  font-family: monospace;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre;
  color: var(--text);
  outline: none;
}

/* ─── 选项卡 ─── */
.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.tab-btn {
  padding: 10px 24px;
  height: 42px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: .15s;
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1;
}
.tab-btn:hover {
  color: var(--text);
}
.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.metric-section {
  margin-bottom: 24px;
}

/* ─── 侧栏导航 ─── */
.sidebar {
  transition: width 0.2s ease;
  overflow: hidden;
}
.sidebar.collapsed {
  width: 70px;
}
.sidebar-nav {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.sidebar-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 14px;
  flex-shrink: 0;
}
.sidebar-nav-brand h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
}
.sidebar-nav-brand-mini h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--accent);
  text-align: center;
  width: 28px;
}
.sidebar-collapse-btn {
  background: transparent;
  border: 1px solid #2a3245;
  border-radius: var(--radius);
  color: #8899aa;
  width: 30px;
  height: 30px;
  cursor: pointer;
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: .15s;
  flex-shrink: 0;
}
.sidebar-collapse-btn:hover {
  background: rgba(255,255,255,0.08);
  color: var(--text);
}
.sidebar-nav-body {
  flex: 1;
  overflow-y: auto;
  padding: 8px 0;
}
.nav-group-title {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  cursor: pointer;
  color: var(--sidebar-text);
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: .15s;
  user-select: none;
  white-space: nowrap;
}
.nav-group-title:hover {
  color: var(--sidebar-text);
  background: rgba(59, 130, 246, 0.1);
}
.nav-group-title .nav-icon {
  font-size: 20px;
  width: 26px;
  text-align: center;
}
.nav-group-title .nav-arrow {
  margin-left: auto;
  font-size: 8px;
  transition: transform 0.2s;
}
.nav-group-title .nav-arrow.open {
  transform: rotate(180deg);
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px 10px 32px;
  cursor: pointer;
  color: var(--sidebar-text);
  font-size: 14px;
  transition: .15s;
  border-left: 3px solid transparent;
  user-select: none;
}
.nav-item:hover:not(.disabled) {
  background: rgba(59, 130, 246, 0.1);
  color: var(--sidebar-text);
}
.nav-item.active {
  background: rgba(59, 130, 246, 0.1);
  color: var(--sidebar-text);
  border-left-color: var(--accent);
}
.nav-item.disabled {
  opacity: .4;
  cursor: not-allowed;
}
.nav-item .nav-icon {
  font-size: 20px;
  width: 26px;
  text-align: center;
  flex-shrink: 0;
}
.nav-item .nav-label {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.nav-badge-coming {
  font-size: 9px;
  padding: 1px 5px;
  border-radius: 8px;
  background: var(--border);
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  flex-shrink: 0;
  line-height: 1.4;
}
.nav-icon-small {
  font-size: 20px;
  width: 26px;
  text-align: center;
  flex-shrink: 0;
  opacity: 0.6;
}
.nav-subgroup-title {
  display: flex;
  align-items: center;
  padding: 8px 14px 8px 32px;
  cursor: pointer;
  color: var(--sidebar-text);
  font-size: 13px;
  font-weight: 600;
  transition: .15s;
  user-select: none;
}
.nav-subgroup-title:hover {
  color: var(--sidebar-text);
  background: rgba(59, 130, 246, 0.1);
}
.nav-subgroup-title .nav-arrow {
  margin-left: auto;
  font-size: 8px;
  transition: transform 0.2s;
}
.nav-subgroup-title .nav-arrow.open {
  transform: rotate(180deg);
}
.nav-subchildren .nav-item {
  padding-left: 44px;
  font-size: 12px;
}
.sidebar-hover-popup {
  position: fixed;
  left: 70px;
  top: 56px;
  width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 0;
  z-index: 200;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}
.popup-title {
  padding: 8px 14px;
  font-size: 11px;
  font-weight: 600;
  color: var(--sidebar-text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 4px;
}
.popup-subgroup-title {
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 500;
  color: var(--sidebar-text);
}
.popup-item {
  padding: 7px 14px;
  font-size: 13px;
  color: var(--sidebar-text);
  cursor: pointer;
  transition: .1s;
}
.popup-item:hover:not(.disabled) {
  background: rgba(59, 130, 246, 0.1);
  color: var(--sidebar-text);
}
.popup-item.active {
  color: var(--sidebar-text);
  background: rgba(59, 130, 246, 0.08);
}
.popup-item.disabled {
  opacity: .4;
  cursor: not-allowed;
}

/* ─── 快速搜索 ─── */
.quick-search {
  position: relative;
}
.search-toggle {
  font-size: 18px;
}
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
}
.search-panel {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  width: 380px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  z-index: 51;
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
  overflow: hidden;
}
.search-input {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg);
  border: none;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 14px;
  outline: none;
}
.search-input::placeholder {
  color: var(--text-muted);
}
.search-results {
  max-height: 320px;
  overflow-y: auto;
}
.search-result-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  transition: .1s;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.search-result-item:hover {
  background: var(--bg-hover);
}
.search-result-item:last-child {
  border-bottom: none;
}
.search-result-id {
  color: var(--accent);
  font-weight: 600;
  min-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.search-result-node {
  color: var(--text-muted);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.search-result-ip {
  color: var(--text-muted);
  min-width: 80px;
  font-size: 12px;
}
.search-empty {
  padding: 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}

@media (max-width: 1200px) {
  .chart-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .chart-grid { grid-template-columns: 1fr; }
  .overview-top { grid-template-columns: 1fr; }
  .overview-metrics { grid-template-columns: 1fr; }
  .ring-layout { flex-direction: column; }
  .sidebar { width: 60px !important; }
}

/* ─── Node Info Page ─── */
.node-info-page {
  padding: 0;
}

.node-info-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.node-detail-back {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.node-detail-back .back-link {
  margin-bottom: 0;
}

.refresh-btn {
  font-size: 20px;
  cursor: pointer;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 12px;
  color: var(--text);
  line-height: 1;
}
.refresh-btn:hover {
  background: var(--bg-hover);
  border-color: var(--accent);
}

.node-info-columns {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.node-info-columns .info-section {
  flex: 1;
  min-width: 0;
}

.back-link {
  display: inline-block;
  cursor: pointer;
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 20px;
  user-select: none;
}
.back-link:hover {
  color: var(--accent-hover);
}

.info-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}

.section-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 16px 0;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.info-grid,
.stats-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.info-row,
.stats-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.info-row:last-child,
.stats-row:last-child {
  border-bottom: none;
}

.info-label,
.stats-label {
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 100px;
}

.info-value,
.stats-value {
  color: var(--text);
  font-weight: 600;
  text-align: right;
  font-family: monospace;
}

.loading-text,
.error-text {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 14px;
}
.error-text {
  color: var(--red);
}

/* ─── 自研日期时间选择器（可国际化，替代原生 datetime-local） ─── */
.dtp { position: relative; }
.dtp-input {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  cursor: pointer; user-select: none;
}
.dtp-input.active { border-color: var(--accent); }
.dtp-placeholder { color: var(--text-muted); }
.dtp-caret { color: var(--text-muted); font-size: 10px; flex-shrink: 0; }
.dtp-popover {
  position: absolute; top: calc(100% + 6px); left: 0; z-index: 1000;
  width: 272px; background: var(--bg-card);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.35);
}
.dtp-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.dtp-title { font-size: 13px; font-weight: 600; unicode-bidi: plaintext; }
.dtp-nav {
  width: 26px; height: 26px; border: 1px solid var(--border);
  background: transparent; color: var(--text-muted);
  border-radius: 6px; cursor: pointer; font-size: 14px; line-height: 1;
}
.dtp-nav:hover { background: var(--bg-hover); color: var(--text); }
.dtp-week { display: grid; grid-template-columns: repeat(7, 1fr); margin-bottom: 4px; }
.dtp-week span { text-align: center; font-size: 11px; color: var(--text-muted); padding: 4px 0; }
.dtp-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 2px; }
.dtp-cell {
  height: 30px; border: 1px solid transparent; background: transparent;
  color: var(--text); border-radius: 6px; cursor: pointer;
  font-size: 12px; display: flex; align-items: center; justify-content: center;
  padding: 0;
}
.dtp-cell:hover { background: var(--bg-hover); }
.dtp-cell.out { color: var(--text-muted); opacity: .45; }
.dtp-cell.today { border-color: var(--accent); }
.dtp-cell.sel { background: var(--accent); color: #fff; }
.dtp-cell.sel:hover { background: var(--accent-hover); color: #fff; }
.dtp-time {
  display: flex; align-items: center; gap: 6px; margin-top: 10px;
  padding-top: 10px; border-top: 1px solid var(--border);
}
.dtp-tlbl { font-size: 12px; color: var(--text-muted); }
.dtp-colon { color: var(--text-muted); }
.dtp-select {
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  border-radius: 6px; padding: 3px 4px; font-size: 12px;
  max-height: 140px; overflow-y: auto;
}
.dtp-today {
  margin-left: auto; width: 26px; height: 26px; border: 1px solid var(--border);
  background: transparent; color: var(--text-muted); border-radius: 6px;
  cursor: pointer; font-size: 10px; display: flex; align-items: center; justify-content: center;
}
.dtp-today:hover { background: var(--bg-hover); color: var(--text); }
.dtp-foot { display: flex; justify-content: flex-end; gap: 8px; margin-top: 10px; }
.btn-sm { padding: 4px 12px; font-size: 12px; }

/* ─── 客户端详情页 ─── */
.detail-toolbar {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.detail-title { font-size: 15px; font-weight: 600; }
.detail-status { font-size: 13px; }
.detail-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
  margin-bottom: 16px;
}
@media (max-width: 900px) {
  .detail-grid { grid-template-columns: 1fr; }
}
.info-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.info-card h3 {
  font-size: 13px; font-weight: 600; color: var(--text-muted);
  margin-bottom: 10px; letter-spacing: .3px;
}
.info-row {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 16px; padding: 7px 0; border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.info-row:last-child { border-bottom: none; }
.info-label { color: var(--text-muted); flex-shrink: 0; }
.info-value {
  color: var(--text); text-align: right; word-break: break-all;
  font-family: monospace; font-size: 12px;
}
.info-value.plain { font-family: inherit; }
.detail-empty {
  text-align: center; color: var(--text-muted);
  padding: 60px 20px; font-size: 14px;
}
.detail-subs-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  font-size: 13px; color: var(--text-muted);
}
.detail-subs-header b { color: var(--text); font-weight: 600; }

/* ═══ 功能支持状态（overview 集群概览 + node-info 节点详情） ═══ */
.features-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
}
.features-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
}
.features-card-head h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
}
.features-consistency {
  font-size: 13px;
  padding: 4px 12px;
  border-radius: 12px;
  white-space: nowrap;
}
.consistency-ok {
  color: var(--green);
  background: color-mix(in srgb, var(--green) 15%, transparent);
}
.consistency-warn {
  color: #f59e0b;
  background: color-mix(in srgb, #f59e0b 15%, transparent);
}
.features-alert {
  background: color-mix(in srgb, #f59e0b 8%, transparent);
  border: 1px solid color-mix(in srgb, #f59e0b 30%, transparent);
  border-radius: var(--radius);
  padding: 12px 14px;
  margin-bottom: 14px;
}
.features-conflict-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 4px 0;
  font-size: 13px;
}
.conflict-feature {
  font-weight: 600;
  color: var(--text);
  min-width: 90px;
}
.conflict-group {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 10px;
}
.conflict-on {
  color: var(--green);
  background: color-mix(in srgb, var(--green) 15%, transparent);
}
.conflict-off {
  color: var(--red);
  background: color-mix(in srgb, var(--red) 15%, transparent);
}
.features-summary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px 20px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.feature-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.dot-on { background: var(--green); }
.dot-off { background: var(--text-muted); }
.dot-partial { background: #f59e0b; }
.dot-unknown { background: var(--text-muted); opacity: 0.4; }
.feature-name {
  color: var(--text);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.feature-desc {
  color: var(--text-muted);
  font-size: 12px;
  white-space: nowrap;
}

/* 单节点功能支持（node-info 页） */
.feature-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.feature-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.feature-row:last-child { border-bottom: none; }
.feature-label {
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 100px;
}
.feature-badge {
  font-size: 12px;
  padding: 3px 10px;
  border-radius: 10px;
  font-weight: 600;
}
.badge-on {
  color: var(--green);
  background: color-mix(in srgb, var(--green) 15%, transparent);
}
.badge-off {
  color: var(--text-muted);
  background: color-mix(in srgb, var(--text-muted) 15%, transparent);
}

/* 功能 × 节点 矩阵表（功能支持状态 Tab） */
.features-matrix {
  width: 100%;
  border-collapse: collapse;
}
.features-matrix th,
.features-matrix td {
  padding: 8px 12px;
  border: 1px solid var(--border);
  font-size: 13px;
  text-align: center;
  white-space: nowrap;
}
.features-matrix .fm-feature-th {
  text-align: left;
  color: var(--text-muted);
  font-weight: 600;
}
.features-matrix .fm-feature {
  text-align: left;
  color: var(--text);
  font-weight: 500;
}
.features-matrix .fm-cell {
  color: var(--text);
}

/* 分页条（retains 页） */
.pager-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-end;
  margin-bottom: 12px;
}
.pager-info {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}