/* ============================================
   服务器本地智能运维监控与故障自愈系统 V1.0
   公共样式表 - 深色科技风主题
   ============================================ */

/* === CSS Variables === */
:root {
  /* Primary Colors */
  --primary-900: #0D1B2A;
  --primary-800: #1B2838;
  --primary-700: #1E2D3D;
  --primary-600: #243447;
  --primary-500: #2D4059;
  --primary-400: #3D5A80;
  --primary-300: #6B8DBF;
  --primary-200: #98B9E6;
  --primary-100: #C8D9F0;
  --primary-50: #E8F0FE;

  /* Accent Colors */
  --accent: #00B4D8;
  --accent-hover: #0096B7;
  --accent-active: #007A95;
  --accent-bg: rgba(0,180,216,0.15);

  /* Semantic Colors */
  --success: #2ECC71;
  --success-bg: rgba(46,204,113,0.15);
  --warning: #F39C12;
  --warning-bg: rgba(243,156,18,0.15);
  --danger: #E74C3C;
  --danger-bg: rgba(231,76,60,0.15);
  --info: #3498DB;
  --info-bg: rgba(52,152,219,0.15);

  /* Extension Colors（与 chart-config.js COLORS 色板保持一致，供统计卡片等组件复用） */
  --purple: #9D4EDD;
  --purple-bg: rgba(157,78,221,0.15);

  /* Chart Colors */
  --chart-1: #00B4D8;
  --chart-2: #2ECC71;
  --chart-3: #F39C12;
  --chart-4: #E74C3C;
  --chart-5: #9B59B6;
  --chart-6: #1ABC9C;
  --chart-7: #3498DB;
  --chart-8: #E67E22;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.6);

  /* Font Sizes */
  --text-2xs: 11px;
  --text-xs: 12px;
  --text-sm: 13px;
  --text-base: 14px;
  --text-lg: 16px;
  --text-xl: 18px;
  --text-2xl: 20px;
  --text-3xl: 24px;
  --text-4xl: 32px;
  --text-5xl: 40px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --sidebar-width: 240px;
  --sidebar-collapsed: 64px;
  --topbar-height: 56px;
}

/* === Reset & Base === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Inter', 'PingFang SC', -apple-system, 'Microsoft YaHei', sans-serif;
  font-size: var(--text-base);
  line-height: 1.5;
  color: var(--primary-200);
  background: var(--primary-900);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: var(--accent-hover);
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: var(--primary-800);
}

::-webkit-scrollbar-thumb {
  background: var(--primary-500);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-400);
}

/* === Top Navigation Bar === */
.topbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--topbar-height);
  background: var(--primary-800);
  border-bottom: 1px solid var(--primary-500);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  z-index: 100;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topbar-logo {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--accent), var(--chart-6));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: var(--text-lg);
}

.topbar-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-50);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.topbar-notify {
  position: relative;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--primary-300);
  transition: all var(--transition-fast);
}

.topbar-notify:hover {
  background: var(--primary-600);
  color: var(--primary-100);
}

.notify-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background: var(--danger);
  color: #fff;
  font-size: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.topbar-user:hover {
  background: var(--primary-600);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: var(--text-sm);
}

.user-name {
  font-size: var(--text-sm);
  color: var(--primary-100);
}

/* === Sidebar === */
/* 修复说明：
   1. 显式设置 height = calc(100vh - topbar-height)，避免依赖 top/bottom 在某些 flex/grid 父级下失效
   2. 保留 overflow-y: auto + overscroll-behavior: contain，确保 28 个菜单项 + 9 个分组标题可滚动
   3. 自定义滚动条样式（细窄、半透明），既可见又不抢眼
   4. 滚动位置由 sidebar-nav.js 精确恢复，关闭 CSS 平滑滚动避免恢复时产生异常滚动动画
*/
.sidebar {
  position: fixed;
  top: var(--topbar-height);
  left: 0;
  bottom: 0;
  /* 显式高度：与 top+bottom 等价，但更稳健，避免某些布局下 bottom 失效导致高度无限增长 */
  height: calc(100vh - var(--topbar-height));
  width: var(--sidebar-width);
  background: var(--primary-800);
  border-right: 1px solid var(--primary-500);
  overflow-y: auto;
  overflow-x: hidden;
  /* 阻断侧边栏滚动到边界时滚动事件向主页面传递，避免"下拉刷新"般的边界滚动联动 */
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  /* 滚动位置由 sidebar-nav.js 精确恢复，关闭 CSS 平滑滚动以避免恢复时产生异常滚动动画 */
  scroll-behavior: auto;
  z-index: 90;
  transition: width var(--transition-slow);
  /* 自定义滚动条：加宽、高对比度，确保用户能看到可滚动 */
  scrollbar-width: auto;
  scrollbar-color: var(--primary-400) var(--primary-700);
}

/* WebKit 内核（Chrome / Edge / Safari）滚动条样式 */
.sidebar::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

.sidebar::-webkit-scrollbar-track {
  background: var(--primary-700);
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--primary-400);
  border-radius: 4px;
  border: 1px solid var(--primary-600);
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--primary-300);
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

/* sidebar-nav 增加底部 padding，确保最后一项不被滚动条遮挡，且向下滚动到底时仍可见 */
.sidebar-nav {
  padding: var(--space-2) 0 var(--space-6);
}

.sidebar-group {
  margin-bottom: var(--space-1);
}

.sidebar-group-title {
  padding: var(--space-3) var(--space-4) var(--space-1);
  font-size: var(--text-xs);
  color: var(--primary-400);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-4);
  height: 36px;
  color: var(--primary-300);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  text-decoration: none;
}

.sidebar-item:hover {
  background: var(--primary-700);
  color: var(--primary-100);
}

.sidebar-item.active {
  background: var(--accent-bg);
  color: var(--accent);
  border-left-color: var(--accent);
}

.sidebar-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.sidebar-item span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
}

/* === Main Content Area === */
.main-content {
  margin-left: var(--sidebar-width);
  margin-top: var(--topbar-height);
  min-height: calc(100vh - var(--topbar-height));
  background: var(--primary-900);
  transition: margin-left var(--transition-slow);
}

.sidebar.collapsed + .main-content {
  margin-left: var(--sidebar-collapsed);
}

.page-container {
  padding: var(--space-6);
}

/* === Breadcrumb === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--primary-400);
  margin-bottom: var(--space-2);
}

.breadcrumb a {
  color: var(--primary-400);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb .separator {
  color: var(--primary-500);
}

/* === Page Header === */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.page-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary-50);
}

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: 500;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  font-family: inherit;
  line-height: 1;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-sm {
  height: 28px;
  padding: 0 var(--space-3);
  font-size: var(--text-xs);
}

.btn-md {
  height: 36px;
  padding: 0 var(--space-5);
  font-size: var(--text-base);
}

.btn-lg {
  height: 44px;
  padding: 0 var(--space-6);
  font-size: var(--text-lg);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.btn-primary:active:not(:disabled) {
  background: var(--accent-active);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--primary-500);
  color: var(--primary-200);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--primary-600);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  background: #C0392B;
}

.btn-text {
  background: transparent;
  color: var(--accent);
  padding: 0 var(--space-2);
  border: none;
}

.btn-text:hover:not(:disabled) {
  background: rgba(0,180,216,0.1);
}

.btn-text-danger {
  background: transparent;
  color: var(--danger);
  padding: 0 var(--space-2);
  border: none;
}

.btn-text-danger:hover:not(:disabled) {
  background: var(--danger-bg);
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--primary-500);
  color: var(--primary-300);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.btn-icon:hover {
  background: var(--primary-600);
  color: var(--primary-100);
}

/* === Cards === */
.card {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-100);
}

.card-body {
  color: var(--primary-200);
}

/* === Stat Cards === */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-cards.cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.stat-cards.cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.stat-card {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.stat-card-label {
  font-size: var(--text-xs);
  color: var(--primary-400);
  font-weight: 500;
}

.stat-card-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--primary-50);
  line-height: 1.2;
}

.stat-card-change {
  font-size: var(--text-xs);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.stat-card-change.up {
  color: var(--success);
}

.stat-card-change.down {
  color: var(--danger);
}

/* === Filter Bar === */
.filter-bar {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.filter-bar .search-input {
  flex: 1;
  min-width: 200px;
}

/* === Forms === */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary-200);
  margin-bottom: var(--space-2);
}

.form-label .required {
  color: var(--danger);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  height: 36px;
  padding: 0 var(--space-3);
  background: var(--primary-600);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  color: var(--primary-100);
  font-size: var(--text-base);
  font-family: inherit;
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
}

.form-input::placeholder {
  color: var(--primary-300);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--danger);
}

.form-error-msg {
  font-size: var(--text-xs);
  color: var(--danger);
  margin-top: var(--space-1);
}

.form-textarea {
  height: auto;
  min-height: 100px;
  padding: var(--space-3);
  resize: vertical;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
}

.form-select {
  cursor: pointer;
  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='%236B8DBF' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--primary-400);
  margin-top: var(--space-1);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form-section {
  margin-bottom: var(--space-6);
}

.form-section-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-100);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--primary-500);
}

/* === Toggle / Switch === */
.toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.toggle-track {
  width: 44px;
  height: 24px;
  background: var(--primary-500);
  border-radius: var(--radius-full);
  position: relative;
  transition: background var(--transition-fast);
}

.toggle.active .toggle-track {
  background: var(--accent);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.toggle.active .toggle-thumb {
  transform: translateX(20px);
}

.toggle-label {
  font-size: var(--text-sm);
  color: var(--primary-200);
}

/* === Tables === */
.table-container {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

table thead th {
  background: var(--primary-800);
  color: var(--primary-300);
  font-size: var(--text-xs);
  font-weight: 500;
  text-align: left;
  padding: var(--space-3) var(--space-4);
  height: 44px;
  border-bottom: 1px solid var(--primary-500);
  white-space: nowrap;
}

table tbody td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  color: var(--primary-200);
  border-bottom: 1px solid var(--primary-500);
  height: 48px;
}

table tbody tr {
  transition: background var(--transition-fast);
}

table tbody tr:hover {
  background: var(--primary-600);
}

table tbody tr.selected {
  background: var(--accent-bg);
}

.table-actions {
  display: flex;
  gap: var(--space-2);
}

/* === Pagination === */
.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: var(--space-4);
  gap: var(--space-2);
}

.pagination-info {
  font-size: var(--text-xs);
  color: var(--primary-400);
  margin-right: var(--space-4);
}

.pagination-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--primary-500);
  color: var(--primary-300);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--primary-600);
  color: var(--primary-100);
}

.pagination-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* === Tags / Badges === */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  height: 24px;
  padding: 0 var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-2xs);
  font-weight: 500;
  white-space: nowrap;
}

.tag-default {
  background: var(--primary-600);
  color: var(--primary-200);
  border: 1px solid var(--primary-500);
}

.tag-blue {
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid rgba(0,180,216,0.3);
}

.tag-green {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(46,204,113,0.3);
}

.tag-orange {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(243,156,18,0.3);
}

.tag-red {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(231,76,60,0.3);
}

.tag-purple {
  background: rgba(155,89,182,0.15);
  color: #9B59B6;
  border: 1px solid rgba(155,89,182,0.3);
}

/* === Status Dots === */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  margin-right: var(--space-2);
  flex-shrink: 0;
}

.status-dot.online { background: var(--success); }
.status-dot.offline { background: #95A5A6; }
.status-dot.unreachable { background: var(--danger); }
.status-dot.alerting { background: var(--warning); }
.status-dot.healing { background: var(--info); }

/* === Modal === */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.6);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms cubic-bezier(0.0, 0.0, 0.2, 1),
              visibility 250ms;
}

.modal-overlay.show {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  max-height: 90vh;
  overflow-y: auto;
  animation: scaleIn var(--transition-normal);
}

.modal-sm { width: 480px; }
.modal-md { width: 640px; }
.modal-lg { width: 800px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--primary-500);
}

.modal-header-icon {
  width: 20px;
  height: 20px;
  margin-right: var(--space-2);
}

.modal-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-100);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.modal-close {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--primary-400);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: var(--text-lg);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--primary-600);
  color: var(--primary-100);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--primary-500);
}

/* === Confirm Modal === */
.confirm-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-4);
}

.confirm-icon.warning {
  background: var(--warning-bg);
  color: var(--warning);
}

.confirm-icon.danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.confirm-text {
  text-align: center;
  font-size: var(--text-base);
  color: var(--primary-200);
  margin-bottom: var(--space-2);
}

.confirm-highlight {
  color: var(--accent);
  font-weight: 600;
}

.confirm-sub-text {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--primary-400);
}

.alert-box {
  background: var(--danger-bg);
  border-left: 3px solid var(--danger);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--primary-200);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

/* === Toast === */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--primary-700);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border-left: 3px solid var(--accent);
  min-width: 300px;
  animation: slideInRight var(--transition-normal);
}

.toast.success { border-left-color: var(--success); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.toast.success .toast-icon { color: var(--success); }
.toast.error .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }

.toast-message {
  flex: 1;
  font-size: var(--text-sm);
  color: var(--primary-100);
}

.toast-close {
  background: none;
  border: none;
  color: var(--primary-400);
  cursor: pointer;
  font-size: var(--text-lg);
  padding: 0;
  line-height: 1;
}

/* === Empty State === */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  color: var(--primary-400);
  margin-bottom: var(--space-4);
  opacity: 0.6;
}

.empty-state-title {
  font-size: var(--text-lg);
  color: var(--primary-300);
  margin-bottom: var(--space-2);
}

.empty-state-desc {
  font-size: var(--text-sm);
  color: var(--primary-400);
  margin-bottom: var(--space-6);
}

/* === Error State === */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.error-state-icon {
  width: 64px;
  height: 64px;
  color: var(--danger);
  margin-bottom: var(--space-4);
}

.error-state-title {
  font-size: var(--text-lg);
  color: var(--danger);
  margin-bottom: var(--space-2);
}

.error-state-desc {
  font-size: var(--text-sm);
  color: var(--primary-300);
  margin-bottom: var(--space-6);
}

/* === Skeleton / Loading === */
.skeleton {
  background: var(--primary-600);
  border-radius: var(--radius-sm);
  animation: pulse 1.5s ease-in-out infinite;
}

.skeleton-row {
  height: 16px;
  margin-bottom: var(--space-2);
}

.skeleton-card {
  height: 100px;
}

.skeleton-chart {
  height: 300px;
}

/* === Progress Bar === */
.progress-bar {
  height: 6px;
  background: var(--primary-600);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.progress-fill.success { background: var(--success); }
.progress-fill.warning { background: var(--warning); }
.progress-fill.danger { background: var(--danger); }
.progress-fill.info { background: var(--info); }
.progress-fill.accent { background: var(--accent); }

/* === Tabs === */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--primary-500);
  margin-bottom: var(--space-5);
}

.tab {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  color: var(--primary-400);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: inherit;
}

.tab:hover {
  color: var(--primary-200);
}

.tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* === Chart Container === */
.chart-container {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}

.chart-container .chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.chart-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-100);
}

.chart-body {
  position: relative;
  min-height: 200px;
}

.chart-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 250px;
  background: var(--primary-600);
  border-radius: var(--radius-md);
  border: 1px dashed var(--primary-500);
  color: var(--primary-400);
  font-size: var(--text-sm);
}

/* === Bar Chart === */
.bar-chart {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.bar-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.bar-label {
  width: 100px;
  font-size: var(--text-sm);
  color: var(--primary-200);
  text-align: right;
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 24px;
  background: var(--primary-600);
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  border-radius: var(--radius-sm);
  transition: width var(--transition-normal);
  display: flex;
  align-items: center;
  padding-left: var(--space-2);
}

.bar-fill.cpu { background: var(--chart-1); }
.bar-fill.mem { background: var(--chart-2); }
.bar-fill.disk { background: var(--chart-3); }
.bar-fill.net { background: var(--chart-4); }

.bar-value {
  font-size: var(--text-xs);
  color: #fff;
  font-weight: 600;
}

/* === Simple Chart (SVG based) === */
.svg-chart {
  width: 100%;
  height: 250px;
}

/* === Grid Layouts === */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-5);
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: var(--space-5);
}

/* === Login Page === */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-900);
  background-image: radial-gradient(ellipse at 50% 50%, rgba(0,180,216,0.05) 0%, transparent 70%);
}

.login-card {
  width: 400px;
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-xl);
}

.login-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-8);
}

.login-logo-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--accent), var(--chart-6));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
}

.login-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--primary-50);
  text-align: center;
}

.login-version {
  font-size: var(--text-xs);
  color: var(--primary-400);
  margin-top: var(--space-1);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.login-input-group {
  position: relative;
}

.login-input-icon {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary-400);
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.login-input-group .form-input {
  padding-left: 40px;
}

/* 密码显示/隐藏切换按钮 */
.login-pwd-toggle {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--primary-400);
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.login-pwd-toggle:hover {
  color: var(--accent);
  background: var(--accent-bg);
}

.login-pwd-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.login-input-group .form-input {
  padding-left: 40px;
  padding-right: 44px;
}

.login-error {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: var(--danger-bg);
  border: 1px solid rgba(231,76,60,0.3);
  border-radius: var(--radius-md);
  color: var(--danger);
  font-size: var(--text-sm);
}

.login-error.hidden {
  display: none;
}

.login-footer-text {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--primary-400);
  margin-top: var(--space-8);
}

/* 登录页测试账号提示（静态开发阶段辅助，联调时可移除） */
.login-test-hint {
  margin-top: var(--space-4);
  padding: 12px 14px;
  background: rgba(0, 180, 216, 0.06);
  border: 1px solid rgba(0, 180, 216, 0.18);
  border-radius: var(--radius-md);
}
.login-test-title {
  font-size: var(--text-xs);
  color: var(--accent-blue);
  font-weight: 600;
  margin-bottom: 6px;
}
.login-test-item {
  font-size: var(--text-xs);
  color: var(--primary-300);
  line-height: 1.8;
  font-family: 'Courier New', monospace;
}

/* === Error Pages === */
.error-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--primary-900);
  text-align: center;
  padding: var(--space-6);
}

.error-code {
  font-size: 120px;
  font-weight: 700;
  color: var(--primary-500);
  line-height: 1;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--primary-400), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.error-page-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--primary-50);
  margin-bottom: var(--space-2);
}

.error-page-desc {
  font-size: var(--text-base);
  color: var(--primary-400);
  margin-bottom: var(--space-8);
}

/* === Fullscreen / Screen Display === */
.fullscreen-mode {
  margin-left: 0 !important;
}

.fullscreen-mode .sidebar,
.fullscreen-mode .topbar {
  display: none;
}

/* === Checkbox === */
.checkbox-wrapper {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.checkbox-wrapper input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* === Text Muted === */
.text-muted {
  color: var(--primary-400);
}

.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-info { color: var(--info); }
.text-accent { color: var(--accent); }

/* === Utility === */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.w-full { width: 100%; }
.text-center { text-align: center; }
.hidden { display: none !important; }

/* === Batch Action Bar === */
.batch-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--primary-600);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.batch-bar .selected-count {
  font-size: var(--text-sm);
  color: var(--primary-100);
  font-weight: 500;
}

/* === Detail Page Info Grid === */
.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.info-item-label {
  font-size: var(--text-xs);
  color: var(--primary-400);
  font-weight: 500;
}

.info-item-value {
  font-size: var(--text-base);
  color: var(--primary-100);
}

/* === Code Block === */
.code-block {
  background: var(--primary-800);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: var(--text-sm);
  color: var(--primary-100);
  overflow-x: auto;
  white-space: pre-wrap;
  line-height: 1.6;
}

/* === Timeline === */
.timeline {
  position: relative;
  padding-left: var(--space-6);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--primary-500);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--space-4);
}

.timeline-dot {
  position: absolute;
  left: -20px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  border: 2px solid var(--accent);
  background: var(--primary-700);
}

.timeline-content {
  font-size: var(--text-sm);
  color: var(--primary-200);
}

/* === Upload Area === */
.upload-area {
  border: 2px dashed var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-10);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  background: var(--primary-600);
}

.upload-area:hover {
  border-color: var(--accent);
  background: var(--primary-700);
}

.upload-icon {
  font-size: 48px;
  color: var(--primary-400);
  margin-bottom: var(--space-3);
}

.upload-text {
  font-size: var(--text-base);
  color: var(--primary-300);
  margin-bottom: var(--space-1);
}

.upload-hint {
  font-size: var(--text-xs);
  color: var(--primary-400);
}

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(100px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

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

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--primary-500);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

/* === Responsive === */
/* 修复说明：
   1. 中等屏幕（≤1199px）保留完整宽度的侧边栏（不再折叠隐藏文字），保证 28 个菜单项文字可读
   2. 小屏幕（≤767px）保持原 display:none 设计（运维系统不适合手机操作，桌面端是主要使用场景）
   3. 显式重置 height: calc(100vh - topbar-height) 防止响应式断点下高度异常
*/
@media (max-width: 1199px) {
  .sidebar {
    width: var(--sidebar-width);
    height: calc(100vh - var(--topbar-height));
  }
  .sidebar .sidebar-item span,
  .sidebar .sidebar-group-title {
    display: block;
  }
  .main-content {
    margin-left: var(--sidebar-width);
  }
  .stat-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .sidebar {
    display: none;
  }
  .main-content {
    margin-left: 0;
  }
  .stat-cards {
    grid-template-columns: 1fr;
  }
  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .modal {
    width: 95vw !important;
    max-height: 95vh;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   V2.0 科技感视觉增强 & 交互动画系统
   ============================================ */

/* === Animation CSS Variables === */
:root {
  --ease-out: cubic-bezier(0.0, 0.0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0.0, 1.0, 1.0);
  --ease-in-out: cubic-bezier(0.4, 0.0, 0.2, 1);
  --animate-duration-fast: 150ms;
  --animate-duration-normal: 300ms;
  --animate-duration-slow: 500ms;
  --glow-color: rgba(0, 180, 216, 0.15);
  --glow-color-strong: rgba(0, 180, 216, 0.3);
  --border-glow: rgba(0, 180, 216, 0.2);
}

/* ============================================
   优化1：粒子背景 & 科技感视觉增强
   ============================================ */

/* --- Particle Canvas Background --- */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* Body background with grid pattern */
body {
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  background:
    /* subtle grid lines */
    linear-gradient(rgba(0, 180, 216, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 180, 216, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* --- Gradient Glow Effects --- */

/* Card glow border effect */
.card, .stat-card, .chart-container, .table-container {
  position: relative;
  transition: all var(--animate-duration-normal) var(--ease-in-out);
}

.card::before, .stat-card::before, .chart-container::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(
    135deg,
    transparent 0%,
    rgba(0, 180, 216, 0.08) 30%,
    rgba(0, 180, 216, 0.15) 50%,
    rgba(0, 180, 216, 0.08) 70%,
    transparent 100%
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  z-index: 0;
  opacity: 0.5;
  transition: opacity var(--animate-duration-normal) var(--ease-in-out);
}

.card:hover::before, .stat-card:hover::before, .chart-container:hover::before {
  opacity: 1;
}

/* Stat card specific glow */
.stat-card {
  overflow: hidden;
}

.stat-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity var(--animate-duration-normal) var(--ease-in-out);
  z-index: 1;
}

.stat-card:hover::after {
  opacity: 1;
}

/* Topbar glow bottom border */
.topbar {
  position: relative;
}

.topbar::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
  pointer-events: none;
}

/* Sidebar active item glow */
.sidebar-item.active {
  position: relative;
  box-shadow: inset 0 0 20px rgba(0, 180, 216, 0.05);
}

.sidebar-item.active::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(0, 180, 216, 0.5), 0 0 24px rgba(0, 180, 216, 0.2);
  border-radius: 0 2px 2px 0;
  transition: box-shadow var(--animate-duration-normal) var(--ease-in-out);
}

/* Login card glow */
.login-card {
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at center, rgba(0, 180, 216, 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.login-logo-icon {
  position: relative;
  z-index: 1;
  box-shadow: 0 0 30px rgba(0, 180, 216, 0.2), 0 0 60px rgba(0, 180, 216, 0.1);
}

/* Button glow */
.btn-primary {
  position: relative;
  overflow: hidden;
}

.btn-primary::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn-primary:active::after {
  width: 300px;
  height: 300px;
}

/* Dashboard stat cards accent border */
.stat-card {
  border-left: 2px solid transparent;
  transition: border-left-color var(--animate-duration-normal) var(--ease-in-out);
}

.stat-card:nth-child(1) { border-left-color: var(--success); }
.stat-card:nth-child(2) { border-left-color: #95A5A6; }
.stat-card:nth-child(3) { border-left-color: var(--warning); }
.stat-card:nth-child(4) { border-left-color: var(--info); }

.stat-card:hover {
  border-left-width: 3px;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 0 20px rgba(0, 180, 216, 0.05);
}

/* Geometric corner decorations for cards */
.card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40px;
  height: 40px;
  background:
    linear-gradient(135deg, transparent 50%, rgba(0, 180, 216, 0.06) 50%);
  pointer-events: none;
  z-index: 1;
  border-radius: 0 var(--radius-lg) 0 0;
}

/* ============================================
   优化2：全页面交互动画系统
   ============================================ */

/* --- Button Hover/Active Transitions --- */
.btn {
  position: relative;
  overflow: hidden;
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: none;
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(0, 180, 216, 0.1);
}

.btn-text:hover:not(:disabled) {
  transform: translateY(-1px);
}

.btn-icon:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  border-color: var(--accent);
}

/* --- Sidebar Navigation Animations --- */
.sidebar-item {
  position: relative;
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.sidebar-item:hover {
  transform: translateX(3px);
}

.sidebar-item.active {
  transform: translateX(0);
}

.sidebar-item svg {
  transition: transform var(--animate-duration-fast) var(--ease-in-out);
}

.sidebar-item:hover svg {
  transform: scale(1.1);
}

/* --- Card Hover Micro-effects --- */
.card {
  transition: all var(--animate-duration-normal) var(--ease-in-out);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), 0 0 24px var(--glow-color);
}

/* --- Table Row Hover --- */
table tbody tr {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

table tbody tr:hover {
  transform: translateX(2px);
  background: var(--primary-600);
  box-shadow: inset 3px 0 0 var(--accent);
}

/* --- Modal Open/Close Animations --- */
.modal {
  transform: scale(0.9) translateY(20px);
  opacity: 0;
  transition: transform var(--animate-duration-normal) var(--ease-out),
              opacity var(--animate-duration-normal) var(--ease-out);
}

.modal-overlay.show .modal {
  transform: scale(1) translateY(0);
  opacity: 1;
}

/* --- Toast Slide Animation --- */
@keyframes slideOutRight {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

/* --- Number Counting Animation --- */
.stat-card-value {
  display: inline-block;
  animation: countFadeIn 0.6s var(--ease-out);
}

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

/* --- Progressive Content Reveal --- */
.page-container > * {
  animation: revealUp 0.5s var(--ease-out) both;
}

.page-container > *:nth-child(1) { animation-delay: 0s; }
.page-container > *:nth-child(2) { animation-delay: 0.05s; }
.page-container > *:nth-child(3) { animation-delay: 0.1s; }
.page-container > *:nth-child(4) { animation-delay: 0.15s; }
.page-container > *:nth-child(5) { animation-delay: 0.2s; }
.page-container > *:nth-child(6) { animation-delay: 0.25s; }
.page-container > *:nth-child(7) { animation-delay: 0.3s; }
.page-container > *:nth-child(8) { animation-delay: 0.35s; }
.page-container > *:nth-child(9) { animation-delay: 0.4s; }
.page-container > *:nth-child(10) { animation-delay: 0.45s; }

@keyframes revealUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Login page animation */
.login-card {
  animation: loginReveal 0.8s var(--ease-out) both;
}

@keyframes loginReveal {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* --- Tab Switch Animation --- */
.tab {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.tab:hover {
  color: var(--primary-100);
}

.tab.active {
  position: relative;
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(0, 180, 216, 0.4);
  animation: tabUnderline 0.3s var(--ease-out);
}

@keyframes tabUnderline {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* --- Toggle/Switch Animation --- */
.toggle-track {
  transition: background var(--animate-duration-fast) var(--ease-in-out);
}

.toggle-thumb {
  transition: transform var(--animate-duration-fast) var(--ease-in-out);
}

.toggle.active .toggle-track {
  box-shadow: 0 0 8px rgba(0, 180, 216, 0.3);
}

/* --- Progress Bar Animation --- */
.progress-fill {
  animation: progressFill 1s var(--ease-out) both;
}

@keyframes progressFill {
  from { width: 0 !important; }
}

/* --- Pagination Animation --- */
.pagination-btn {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.pagination-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.pagination-btn.active {
  box-shadow: 0 0 12px rgba(0, 180, 216, 0.3);
}

/* --- Filter Bar Hover --- */
.filter-bar {
  transition: box-shadow var(--animate-duration-normal) var(--ease-in-out);
}

.filter-bar:focus-within {
  box-shadow: 0 0 16px var(--glow-color);
}

/* --- Form Input Focus --- */
.form-input, .form-select, .form-textarea {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.1);
}

/* --- Breadcrumb Link Hover --- */
.breadcrumb a {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.breadcrumb a:hover {
  transform: translateX(2px);
  display: inline-block;
}

/* --- Topbar Notification Hover --- */
.topbar-notify {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.topbar-notify:hover {
  transform: scale(1.1);
}

.notify-badge {
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

/* --- User Avatar Hover --- */
.topbar-user:hover .user-avatar {
  box-shadow: 0 0 12px rgba(0, 180, 216, 0.3);
}

.user-avatar {
  transition: box-shadow var(--animate-duration-fast) var(--ease-in-out);
}

/* --- Bar Chart Fill Animation --- */
.bar-fill {
  animation: barFill 1s var(--ease-out) both;
}

@keyframes barFill {
  from { width: 0 !important; }
}

/* --- Status Dot Pulse --- */
.status-dot.online {
  box-shadow: 0 0 6px rgba(46, 204, 113, 0.5);
  animation: dotPulse 2s ease-in-out infinite;
}

.status-dot.alerting {
  box-shadow: 0 0 6px rgba(243, 156, 18, 0.5);
  animation: dotPulse 1s ease-in-out infinite;
}

.status-dot.healing {
  box-shadow: 0 0 6px rgba(52, 152, 219, 0.5);
  animation: dotPulse 1.5s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% { box-shadow: 0 0 4px currentColor; }
  50% { box-shadow: 0 0 12px currentColor, 0 0 20px currentColor; }
}

/* --- Tag Hover --- */
.tag {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
}

.tag:hover {
  transform: scale(1.05);
}

/* --- Upload Area Hover --- */
.upload-area {
  transition: all var(--animate-duration-normal) var(--ease-in-out);
}

.upload-area:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 20px rgba(0, 180, 216, 0.1);
}

/* --- Confirm Modal Icon --- */
.confirm-icon {
  animation: confirmIconIn 0.4s var(--ease-out) both;
}

@keyframes confirmIconIn {
  from { transform: scale(0); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* --- Error Pages Animation --- */
.error-code {
  animation: errorCodeFloat 3s ease-in-out infinite;
}

@keyframes errorCodeFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* --- Info Grid Item Hover --- */
.info-item {
  transition: all var(--animate-duration-fast) var(--ease-in-out);
  padding: var(--space-2);
  border-radius: var(--radius-sm);
}

.info-item:hover {
  background: var(--primary-600);
  transform: translateX(2px);
}

/* --- Timeline Item Animation --- */
.timeline-item {
  animation: timelineIn 0.5s var(--ease-out) both;
}

.timeline-item:nth-child(1) { animation-delay: 0s; }
.timeline-item:nth-child(2) { animation-delay: 0.1s; }
.timeline-item:nth-child(3) { animation-delay: 0.2s; }
.timeline-item:nth-child(4) { animation-delay: 0.3s; }
.timeline-item:nth-child(5) { animation-delay: 0.4s; }

@keyframes timelineIn {
  from { opacity: 0; transform: translateX(-10px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ============================================
   优化3：骨架屏 & 空状态 & 数据占位
   ============================================ */

/* --- Enhanced Skeleton Screen --- */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--primary-600) 25%,
    var(--primary-500) 50%,
    var(--primary-600) 75%
  );
  background-size: 200% 100%;
  animation: skeletonShimmer 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeletonShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Skeleton Table */
.skeleton-table {
  width: 100%;
}

.skeleton-table-header {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  background: var(--primary-800);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  margin-bottom: 1px;
}

.skeleton-table-header .skeleton {
  height: 14px;
  border-radius: var(--radius-sm);
}

.skeleton-table-row {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--primary-500);
  align-items: center;
}

.skeleton-table-row .skeleton {
  height: 14px;
  border-radius: var(--radius-sm);
}

/* Skeleton Card */
.skeleton-card {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.skeleton-card-title {
  height: 20px;
  width: 40%;
  background: var(--primary-600);
  border-radius: var(--radius-sm);
  animation: skeletonShimmer 1.5s ease-in-out infinite;
  background-size: 200% 100%;
  background-image: linear-gradient(90deg, var(--primary-600) 25%, var(--primary-500) 50%, var(--primary-600) 75%);
  margin-bottom: var(--space-4);
}

.skeleton-card-body .skeleton {
  margin-bottom: var(--space-2);
}

/* Skeleton Stat Card */
.skeleton-stat-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.skeleton-stat-card {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Skeleton Chart */
.skeleton-chart {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  height: 300px;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.skeleton-chart-area {
  flex: 1;
  background: var(--primary-600);
  border-radius: var(--radius-md);
  animation: skeletonShimmer 1.5s ease-in-out infinite;
  background-size: 200% 100%;
  background-image: linear-gradient(90deg, var(--primary-600) 25%, var(--primary-500) 50%, var(--primary-600) 75%);
}

/* --- Unified Empty State --- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
  min-height: 300px;
}

.empty-state-icon {
  width: 72px;
  height: 72px;
  margin-bottom: var(--space-5);
  color: var(--primary-400);
  opacity: 0.5;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-600);
  border-radius: var(--radius-full);
  border: 2px dashed var(--primary-500);
}

.empty-state-icon svg {
  width: 36px;
  height: 36px;
}

.empty-state-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-300);
  margin-bottom: var(--space-2);
}

.empty-state-desc {
  font-size: var(--text-sm);
  color: var(--primary-400);
  margin-bottom: var(--space-6);
  max-width: 400px;
  line-height: 1.6;
}

.empty-state-action {
  display: flex;
  gap: var(--space-3);
}

/* Empty state variants */
.empty-state-sm {
  padding: var(--space-8) var(--space-4);
  min-height: 200px;
}

.empty-state-sm .empty-state-icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-3);
}

.empty-state-sm .empty-state-icon svg {
  width: 24px;
  height: 24px;
}

/* ============================================
   FE-MOD-02 服务器批量纳管 补充样式
   ============================================ */

/* === Tag 别名类（与 FE-MOD-01 api.js 辅助函数约定对齐） === */
.tag-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(46,204,113,0.3);
}
.tag-warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(243,156,18,0.3);
}
.tag-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(231,76,60,0.3);
}
.tag-primary {
  background: var(--accent-bg);
  color: var(--accent);
  border: 1px solid rgba(0,180,216,0.3);
}
.tag-info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid rgba(52,152,219,0.3);
}

/* === 资源使用率等级颜色 === */
.usage-critical { color: var(--danger); font-weight: 600; }
.usage-warning { color: var(--warning); font-weight: 600; }
.usage-normal { color: var(--accent); }
.usage-low { color: var(--success); }

/* === 服务器列表 === */
.server-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  align-items: center;
}
.server-tags .tag {
  height: 20px;
  font-size: var(--text-2xs);
  padding: 0 var(--space-1);
}
.server-name-cell {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.server-name-cell .status-dot {
  margin-right: 0;
}
.metric-mini {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
}
.metric-mini .metric-label {
  color: var(--primary-300);
}
.metric-mini .metric-value {
  font-weight: 600;
}
.metric-bar {
  width: 60px;
  height: 5px;
  background: var(--primary-600);
  border-radius: var(--radius-full);
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
  margin-left: var(--space-1);
}
.metric-bar .progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

/* === 批量操作栏 === */
.batch-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--accent-bg);
  border: 1px solid rgba(0,180,216,0.3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}
.batch-bar .batch-info {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--primary-100);
  font-size: var(--text-sm);
}
.batch-bar .batch-actions {
  display: flex;
  gap: var(--space-2);
}
.batch-bar .batch-clear {
  color: var(--primary-300);
  cursor: pointer;
  background: none;
  border: none;
  font-size: var(--text-xs);
  text-decoration: underline;
}
.batch-bar .batch-clear:hover {
  color: var(--accent);
}

/* === 表格复选框列 === */
.table th.col-check,
.table td.col-check {
  width: 40px;
  text-align: center;
}
.table th.col-check input[type="checkbox"],
.table td.col-check input[type="checkbox"] {
  margin: 0;
  cursor: pointer;
}

/* === 服务器详情页 === */
.detail-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
}
.detail-header .detail-title-block {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.detail-header .detail-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--primary-50);
  margin: 0;
}
.detail-header .detail-subtitle {
  color: var(--primary-300);
  font-size: var(--text-sm);
  margin-top: var(--space-1);
}
.detail-header .detail-actions {
  display: flex;
  gap: var(--space-2);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-4);
}
.info-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3) var(--space-4);
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
}
.info-item .info-label {
  color: var(--primary-300);
  font-size: var(--text-xs);
}
.info-item .info-value {
  color: var(--primary-50);
  font-size: var(--text-base);
  font-weight: 500;
  word-break: break-all;
}

/* 实时指标卡片 */
.metric-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.metric-card {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.metric-card .metric-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}
.metric-card .metric-card-title {
  color: var(--primary-200);
  font-size: var(--text-sm);
}
.metric-card .metric-card-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-bg);
  color: var(--accent);
}
.metric-card .metric-card-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--primary-50);
  margin-bottom: var(--space-2);
}
.metric-card .metric-card-meta {
  color: var(--primary-300);
  font-size: var(--text-xs);
}

/* 详情页进程/服务表格紧凑样式 */
.metric-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.metric-table th,
.metric-table td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  border-bottom: 1px solid var(--primary-600);
}
.metric-table th {
  color: var(--primary-300);
  font-weight: 500;
  font-size: var(--text-xs);
}
.metric-table td {
  color: var(--primary-100);
}

/* 历史趋势图区域 */
.chart-card {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}
.chart-card .chart-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-3);
}
.chart-card .chart-card-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-50);
}
.chart-card .chart-card-controls {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}
.chart-canvas-wrap {
  position: relative;
  height: 320px;
}

/* === 表单补充 === */
.form-textarea {
  width: 100%;
  min-height: 100px;
  padding: var(--space-3) var(--space-4);
  background: var(--primary-900);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  color: var(--primary-50);
  font-size: var(--text-sm);
  font-family: 'Courier New', 'Consolas', monospace;
  resize: vertical;
}
.form-textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-bg);
}
.form-file {
  position: relative;
  display: inline-block;
}
.form-file input[type="file"] {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  overflow: hidden;
  z-index: -1;
}
.form-file-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--primary-600);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  color: var(--primary-100);
  cursor: pointer;
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}
.form-file-label:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.radio-group {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.radio-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  color: var(--primary-100);
  font-size: var(--text-sm);
}
.radio-item input[type="radio"] {
  margin: 0;
  cursor: pointer;
}

/* === 批量导入页 === */
.import-upload {
  border: 2px dashed var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-6);
  text-align: center;
  background: var(--primary-700);
  transition: all var(--transition-normal);
  cursor: pointer;
}
.import-upload:hover,
.import-upload.dragover {
  border-color: var(--accent);
  background: var(--accent-bg);
}
.import-upload .import-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  border-radius: var(--radius-full);
  background: var(--accent-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.import-upload .import-title {
  font-size: var(--text-lg);
  color: var(--primary-50);
  margin-bottom: var(--space-2);
}
.import-upload .import-hint {
  color: var(--primary-300);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}
.import-template {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--accent);
  font-size: var(--text-sm);
  text-decoration: none;
}
.import-template:hover {
  text-decoration: underline;
}
.import-result {
  margin-top: var(--space-5);
}
.result-summary {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.result-summary-item {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
}
.result-summary-item .result-num {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-1);
}
.result-summary-item .result-label {
  color: var(--primary-300);
  font-size: var(--text-xs);
}
.result-summary-item.success .result-num { color: var(--success); }
.result-summary-item.failed .result-num { color: var(--danger); }
.result-summary-item.total .result-num { color: var(--accent); }

/* === 采集配置页 === */
.config-section {
  background: var(--primary-700);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-5);
}
.config-section .config-section-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-50);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--primary-600);
}
.config-section .config-section-desc {
  color: var(--primary-300);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}
.threshold-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
}
.threshold-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.threshold-item .threshold-label {
  flex: 0 0 80px;
  color: var(--primary-200);
  font-size: var(--text-sm);
}
.threshold-item .form-input {
  flex: 1;
  min-width: 80px;
}
.metric-toggle-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-3);
}
.metric-toggle-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--primary-600);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  color: var(--primary-100);
  font-size: var(--text-sm);
}

/* === 连接测试结果展示 === */
.test-result {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-top: var(--space-3);
}
.test-result.success {
  background: var(--success-bg);
  border: 1px solid rgba(46,204,113,0.3);
}
.test-result.failed {
  background: var(--danger-bg);
  border: 1px solid rgba(231,76,60,0.3);
}
.test-result .test-result-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  margin-bottom: var(--space-2);
}
.test-result.success .test-result-title { color: var(--success); }
.test-result.failed .test-result-title { color: var(--danger); }
.test-result .test-result-detail {
  color: var(--primary-100);
  font-size: var(--text-sm);
  line-height: 1.6;
}
.test-result .test-result-detail div {
  margin-bottom: var(--space-1);
}
.test-result .test-result-detail .detail-key {
  color: var(--primary-300);
  display: inline-block;
  width: 80px;
}

/* === 详情页 Tab 内容区 === */
.tab-content {
  display: none;
}
.tab-content.active {
  display: block;
}

/* === 服务器列表操作按钮组 === */
.table-actions .btn-text-danger {
  color: var(--danger);
}

/* === 响应式补充 === */
@media (max-width: 768px) {
  .detail-header {
    flex-direction: column;
    gap: var(--space-3);
  }
  .detail-header .detail-actions {
    width: 100%;
    flex-wrap: wrap;
  }
  .metric-card-grid {
    grid-template-columns: 1fr;
  }
  .chart-card .chart-card-controls {
    width: 100%;
  }
  .batch-bar {
    flex-direction: column;
    gap: var(--space-2);
    align-items: stretch;
  }
  .batch-bar .batch-actions {
    flex-wrap: wrap;
  }
}

.empty-state-sm .empty-state-title {
  font-size: var(--text-base);
}

/* --- Data Placeholder --- */
.data-placeholder {
  color: var(--primary-400);
  font-style: italic;
  font-size: var(--text-sm);
}

.data-na {
  color: var(--primary-500);
  font-size: var(--text-sm);
  text-align: center;
  display: inline-block;
  min-width: 40px;
}

/* --- Chart Empty Placeholder --- */
.chart-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 250px;
  background: var(--primary-600);
  border-radius: var(--radius-md);
  border: 1px dashed var(--primary-500);
}

.chart-empty-icon {
  width: 48px;
  height: 48px;
  color: var(--primary-400);
  opacity: 0.5;
  margin-bottom: var(--space-3);
}

.chart-empty-text {
  font-size: var(--text-sm);
  color: var(--primary-400);
}

/* --- Table Empty State --- */
.table-empty {
  padding: var(--space-10) var(--space-6);
  text-align: center;
  color: var(--primary-400);
}

.table-empty-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-3);
  color: var(--primary-400);
  opacity: 0.5;
}

.table-empty-text {
  font-size: var(--text-sm);
  color: var(--primary-400);
}

/* --- Loading Spinner Overlay --- */
.loading-overlay {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  gap: var(--space-4);
  min-height: 300px;
}

.loading-overlay .spinner-lg {
  width: 40px;
  height: 40px;
  border-width: 3px;
}

.loading-text {
  font-size: var(--text-sm);
  color: var(--primary-400);
}

/* --- Responsive adjustments for new features --- */
@media (max-width: 1199px) {
  .skeleton-stat-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .skeleton-stat-cards {
    grid-template-columns: 1fr;
  }
  #particles-canvas {
    display: none;
  }
  body::before {
    display: none;
  }
}

/* ============================================================ */
/* FE-MOD-01 公共框架扩展样式（api.js / utils.js / chart-config.js 配套） */
/* ============================================================ */

/* --- 按钮 loading 状态 --- */
.btn-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  margin-right: 6px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: btn-spin 0.6s linear infinite;
  vertical-align: middle;
}
@keyframes btn-spin {
  to { transform: rotate(360deg); }
}
.btn-loading {
  pointer-events: none;
  opacity: 0.75;
}

/* --- Toast 进入动画（配合 .show 类） --- */
.toast {
  opacity: 0;
  transform: translateX(120%);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out);
  display: flex;
  align-items: center;
  cursor: pointer;
}
.toast.show {
  opacity: 1;
  transform: translateX(0);
}
.toast .toast-icon {
  display: flex;
  align-items: center;
  margin-right: 10px;
  flex-shrink: 0;
}
.toast .toast-message {
  flex: 1;
  word-break: break-word;
}

/* --- 骨架屏补充样式 --- */
.skeleton-line {
  height: 14px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary-800) 25%, var(--primary-700) 37%, var(--primary-800) 63%);
  background-size: 400% 100%;
  animation: skeleton-shimmer 1.4s ease infinite;
}
.skeleton-block {
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, var(--primary-800) 25%, var(--primary-700) 37%, var(--primary-800) 63%);
  background-size: 400% 100%;
  animation: skeleton-shimmer 1.4s ease infinite;
}
@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* --- 表格空状态行 --- */
.empty-row td {
  padding: 48px 16px !important;
  text-align: center;
}
.empty-row .empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--primary-500);
}
.empty-row .empty-state svg {
  color: var(--primary-600);
  margin-bottom: 12px;
}
.empty-row .empty-text {
  font-size: var(--text-sm);
  color: var(--primary-400);
}

/* --- 分页扩展样式（.page-btn / .page-ellipsis / .pagination-controls） --- */
.pagination-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}
.page-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border: 1px solid var(--primary-700);
  background: var(--primary-800);
  color: var(--primary-300);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--text-sm);
  transition: all var(--animate-duration-fast) var(--ease-out);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.page-btn:hover:not(:disabled):not(.active) {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  background: rgba(0, 180, 216, 0.08);
}
.page-btn.active {
  background: var(--accent-blue);
  border-color: var(--accent-blue);
  color: var(--primary-900);
  font-weight: 600;
}
.page-btn:disabled,
.page-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.page-ellipsis {
  color: var(--primary-500);
  padding: 0 6px;
  user-select: none;
}

/* --- 确认弹窗图标颜色补充 --- */
.confirm-icon.danger {
  color: var(--danger);
}

/* --- Chart.js 容器 --- */
.chart-wrapper {
  position: relative;
  width: 100%;
}
.chart-wrapper canvas {
  max-width: 100%;
}

/* --- 仪表盘 TOP 排行条形图（与设计稿一致） --- */
.rank-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.rank-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.rank-index {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary-700);
  color: var(--primary-300);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-index { background: var(--danger); color: #fff; }
.rank-item:nth-child(2) .rank-index { background: var(--warning); color: #fff; }
.rank-item:nth-child(3) .rank-index { background: var(--accent-blue); color: #fff; }
.rank-name {
  width: 130px;
  font-size: var(--text-sm);
  color: var(--primary-200);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}
.rank-bar-wrap {
  flex: 1;
  height: 8px;
  background: var(--primary-800);
  border-radius: 4px;
  overflow: hidden;
}
.rank-bar {
  height: 100%;
  border-radius: 4px;
  transition: width 0.8s var(--ease-out);
}
.rank-bar.cpu { background: linear-gradient(90deg, #00B4D8, #4CC9F0); }
.rank-bar.mem { background: linear-gradient(90deg, #06D6A0, #4CC9F0); }
.rank-value {
  width: 48px;
  text-align: right;
  font-size: var(--text-sm);
  color: var(--primary-100);
  font-weight: 600;
  flex-shrink: 0;
}

/* --- 表格操作按钮组 --- */
.table-actions {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.table-actions .btn {
  padding: 4px 10px;
  font-size: var(--text-xs);
}

/* --- 表单校验错误样式 --- */
.form-input.error,
.form-select.error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px rgba(239, 71, 111, 0.15);
}
.form-error {
  color: var(--danger);
  font-size: var(--text-xs);
  margin-top: 4px;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* --- 状态徽标补充 --- */
.status-dot.pulse {
  animation: status-pulse 1.5s ease infinite;
}
@keyframes status-pulse {
  0%, 100% { box-shadow: 0 0 0 0 currentColor; opacity: 1; }
  50% { box-shadow: 0 0 0 4px transparent; opacity: 0.7; }
}

/* --- 大屏模式按钮 --- */
.btn-screen-mode {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* --- 移动端表格横向滚动 --- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-wrap .table {
  min-width: 600px;
}

/* --- 移动端筛选栏 --- */
@media (max-width: 767px) {
  .filter-bar {
    flex-direction: column;
    align-items: stretch;
  }
  .filter-bar .filter-item {
    width: 100%;
  }
  .filter-bar .filter-item .form-input,
  .filter-bar .filter-item .form-select {
    width: 100%;
  }
  .table-actions {
    flex-direction: column;
  }
  .table-actions .btn {
    width: 100%;
  }
  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .form-row {
    flex-direction: column;
  }
  .form-row .form-group {
    width: 100%;
  }
}

/* ============================================
   FE-MOD-02 补充样式（自检修复：补全缺失类名）
   ============================================ */

/* --- metric-bar-inner：指标进度条内层填充（与 .metric-bar .progress-fill 等价） --- */
.metric-bar-inner {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
  display: block;
}
/* 使用率等级别名（与 usage-* 体系一致，用于 metric-bar-inner 着色） */
.metric-bar-inner.usage-critical { background: var(--danger); }
.metric-bar-inner.usage-warning { background: var(--warning); }
.metric-bar-inner.usage-normal { background: var(--success); }
.metric-bar-inner.usage-low { background: var(--info); }

/* --- 详情页头部子元素布局（server-detail.html 使用） --- */
.detail-header-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.detail-header-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--primary-50);
  margin: 0;
}
.detail-header-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

/* --- 按钮组容器（时间范围切换等） --- */
.btn-group {
  display: inline-flex;
  gap: 0;
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.btn-group .btn {
  border-radius: 0;
  border: none;
  border-right: 1px solid var(--primary-500);
  background: var(--primary-700);
  color: var(--primary-200);
}
.btn-group .btn:last-child {
  border-right: none;
}
.btn-group .btn:hover {
  background: var(--primary-600);
  color: var(--primary-50);
}
.btn-group .btn.active {
  background: var(--accent);
  color: #fff;
}

/* --- 开关组件（server-config.html 采集状态开关） --- */
.switch {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  user-select: none;
}
.switch input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}
.slider {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 22px;
  background: var(--primary-500);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
  flex-shrink: 0;
}
.slider > span {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: transform var(--transition-fast);
}
/* 选中态：滑块右移 + 背景变绿（CSS 兜底，JS 也会同步内联样式） */
.switch input:checked + .slider {
  background: var(--success);
}
.switch input:checked + .slider > span {
  transform: translateX(20px);
}
.switch input:focus-visible + .slider {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* --- .spin 旋转动画别名（按钮内 SVG 加载图标） --- */
.spin {
  animation: spin 0.8s linear infinite;
  transform-origin: center;
}

/* --- 自定义指标项容器（server-config.js 动态生成） --- */
.custom-metric-item {
  background: var(--primary-900);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
}
.custom-metric-item:hover {
  border-color: var(--primary-400);
}

/* --- 指标开关项激活态视觉反馈 --- */
.metric-toggle-item.active {
  border-color: var(--accent);
  background: var(--accent-bg);
  color: var(--primary-50);
}
.metric-toggle-item .toggle-check {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--primary-400);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}
.metric-toggle-item.active .toggle-check {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* --- 详情页 Tab 导航补充（与既有 .tabs 体系兼容） --- */
.detail-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--primary-500);
  margin-bottom: var(--space-4);
  overflow-x: auto;
}
.detail-tabs .tab-item {
  padding: var(--space-3) var(--space-5);
  color: var(--primary-300);
  font-size: var(--text-sm);
  cursor: pointer;
  border: none;
  background: transparent;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.detail-tabs .tab-item:hover {
  color: var(--primary-100);
}
.detail-tabs .tab-item.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* --- 详情页指标卡片网格（实时指标 Tab） --- */
.metric-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}
.metric-card {
  background: var(--primary-800);
  border: 1px solid var(--primary-500);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.metric-card-label {
  font-size: var(--text-xs);
  color: var(--primary-400);
  margin-bottom: var(--space-2);
}
.metric-card-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--primary-50);
  margin-bottom: var(--space-2);
}
.metric-card .metric-bar {
  width: 100%;
  height: 6px;
  margin-left: 0;
}

/* --- 详情页指标明细表格 --- */
.metric-detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}
.metric-detail-table th,
.metric-detail-table td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  border-bottom: 1px solid var(--primary-600);
}
.metric-detail-table th {
  color: var(--primary-400);
  font-weight: 500;
  font-size: var(--text-xs);
}
.metric-detail-table td {
  color: var(--primary-100);
}

/* --- 导入页上传区域补充 --- */
.upload-area {
  border: 2px dashed var(--primary-400);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  background: var(--primary-800);
}
.upload-area:hover,
.upload-area.dragover {
  border-color: var(--accent);
  background: var(--accent-bg);
}
.upload-area .upload-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-3);
  color: var(--primary-300);
}
.upload-area .upload-text {
  color: var(--primary-100);
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}
.upload-area .upload-hint {
  color: var(--primary-400);
  font-size: var(--text-xs);
}

/* --- 导入预览结果摘要 --- */
.preview-summary {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-3) var(--space-4);
  background: var(--primary-800);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  font-size: var(--text-sm);
  flex-wrap: wrap;
}
.preview-summary .summary-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.preview-summary .summary-item .summary-num {
  font-weight: 700;
  font-size: var(--text-lg);
}
.preview-summary .summary-success .summary-num { color: var(--success); }
.preview-summary .summary-fail .summary-num { color: var(--danger); }
.preview-summary .summary-total .summary-num { color: var(--primary-50); }

/* --- 导入结果详情 --- */
.import-result-detail {
  background: var(--primary-800);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-top: var(--space-3);
  max-height: 240px;
  overflow-y: auto;
  font-size: var(--text-sm);
}
.import-result-detail .result-line {
  padding: var(--space-1) 0;
  display: flex;
  gap: var(--space-2);
  align-items: center;
}
.import-result-detail .result-line.success { color: var(--success); }
.import-result-detail .result-line.failed { color: var(--danger); }

/* --- 服务器列表使用率进度条（表格内） --- */
.usage-bar {
  width: 80px;
  height: 6px;
  background: var(--primary-600);
  border-radius: var(--radius-full);
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
}
.usage-bar .usage-bar-inner {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

/* --- 响应式补充：FE-MOD-02 --- */
@media (max-width: 767px) {
  .detail-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }
  .detail-header-actions {
    width: 100%;
    flex-wrap: wrap;
  }
  .metric-card-grid {
    grid-template-columns: 1fr;
  }
  .btn-group {
    width: 100%;
  }
  .btn-group .btn {
    flex: 1;
  }
  .preview-summary {
    flex-direction: column;
    gap: var(--space-2);
  }
}

/* ============================================
   FE-MOD-03 补充通用样式（指标采集与可视化复用）
   说明：以下类为 FE-MOD-03 页面新增的通用 UI 组件，
        放在公共样式表便于后续模块复用。
   ============================================ */

/* --- 页面副标题 --- */
.page-subtitle {
  color: var(--primary-300);
  font-size: var(--text-sm);
  font-weight: 400;
  margin-left: var(--space-3);
}

/* --- 卡片头部右侧操作区 --- */
.card-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* --- 表单辅助文本 --- */
.form-text {
  color: var(--primary-200);
  font-size: var(--text-sm);
  line-height: 1.6;
  padding: var(--space-2) 0;
}

/* --- 多选 Chip 组件 --- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--primary-600);
  background: rgba(13, 27, 42, 0.4);
  color: var(--primary-200);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
}
.chip:hover {
  border-color: var(--accent);
  color: var(--primary-100);
}
.chip.chip-active {
  background: rgba(0, 180, 216, 0.15);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 1px rgba(0, 180, 216, 0.3);
}
.chip .status-dot {
  width: 8px;
  height: 8px;
}

/* --- 图表加载骨架屏 --- */
.chart-skeleton {
  padding: var(--space-3);
}
.chart-skeleton .skeleton-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  height: 300px;
}
.skeleton-bar {
  flex: 1;
  border-radius: 4px 4px 0 0;
  background: linear-gradient(90deg, var(--primary-800) 25%, var(--primary-700) 37%, var(--primary-800) 63%);
  background-size: 400% 100%;
  animation: skeleton-shimmer 1.4s ease infinite;
}

/* --- 自适应：筛选条在小屏纵向排列（filter-bar 已有 flex-wrap） --- */
@media (max-width: 768px) {
  .page-subtitle {
    display: block;
    margin-left: 0;
    margin-top: var(--space-1);
  }
  .card-header-actions {
    flex-wrap: wrap;
  }
}