/* =====================================================
   绿享 Admin - Flat UI Green Theme
   Brand: 绿享 (LüXiang)
   ===================================================== */

/* CSS Variables - Green Theme */
:root {
  /* Primary Colors */
  --primary-50: #e8f5e9;
  --primary-100: #c8e6c9;
  --primary-200: #a5d6a7;
  --primary-300: #81c784;
  --primary-400: #66bb6a;
  --primary-500: #4caf50;
  --primary-600: #43a047;
  --primary-700: #388e3c;
  --primary-800: #2e7d32;
  --primary-900: #1b5e20;

  /* Brand Color */
  --brand-primary: #2e7d32;
  --brand-secondary: #43a047;
  --brand-light: #81c784;
  --brand-dark: #1b5e20;

  /* Neutral Colors */
  --gray-50: #fafafa;
  --gray-100: #f5f5f5;
  --gray-200: #eeeeee;
  --gray-300: #e0e0e0;
  --gray-400: #bdbdbd;
  --gray-500: #9e9e9e;
  --gray-600: #757575;
  --gray-700: #616161;
  --gray-800: #424242;
  --gray-900: #212121;

  /* Status Colors */
  --success: #4caf50;
  --warning: #ff9800;
  --danger: #f44336;
  --info: #2196f3;

  /* Background Colors */
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-sidebar: #1b5e20;
  --bg-card: #ffffff;

  /* Text Colors */
  --text-primary: #212121;
  --text-secondary: #757575;
  --text-light: #9e9e9e;
  --text-white: #ffffff;

  /* Border */
  --border-color: #e0e0e0;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-sm: 4px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  /* Layout */
  --sidebar-width: 260px;
  --sidebar-collapsed-width: 64px;
  --header-height: 64px;
  --transition: all 0.3s ease;
}

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

html {
  font-size: 14px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

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

a:hover {
  color: var(--brand-secondary);
}

img {
  max-width: 100%;
  height: auto;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* =====================================================
   Layout
   ===================================================== */

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, var(--brand-dark) 0%, var(--brand-primary) 100%);
  color: var(--text-white);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 1000;
  transition: var(--transition);
  overflow-y: auto;
  overflow-x: hidden;
}

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

.sidebar-header {
  padding: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
  width: 40px;
  height: 40px;
  background: var(--text-white);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--brand-primary);
  font-size: 18px;
  flex-shrink: 0;
}

.sidebar-brand {
  font-size: 20px;
  font-weight: 600;
  white-space: nowrap;
}

.sidebar.collapsed .sidebar-brand,
.sidebar.collapsed .menu-text,
.sidebar.collapsed .menu-arrow,
.sidebar.collapsed .submenu {
  display: none;
}

/* Sidebar Menu */
.sidebar-menu {
  padding: var(--spacing-md) 0;
}

.menu-section {
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.5);
  margin-top: var(--spacing-md);
}

.sidebar.collapsed .menu-section {
  text-align: center;
  padding: var(--spacing-sm);
}

.menu-item {
  position: relative;
}

.menu-link {
  display: flex;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition);
  gap: var(--spacing-md);
  cursor: pointer;
}

.menu-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-white);
}

.menu-link.active {
  background: rgba(255, 255, 255, 0.15);
  color: var(--text-white);
  border-left: 3px solid var(--text-white);
}

.menu-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.menu-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.menu-text {
  flex: 1;
  white-space: nowrap;
}

.menu-arrow {
  transition: transform 0.3s;
}

.menu-item.open .menu-arrow {
  transform: rotate(90deg);
}

.submenu-arrow {
  width: 18px;
  height: 18px;
  margin-left: auto;
  fill: currentColor;
  transition: transform 0.3s;
  flex-shrink: 0;
}

.menu-item.open .submenu-arrow {
  transform: rotate(180deg);
}

.menu-badge {
  background: var(--danger);
  color: white;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 10px;
  margin-left: auto;
}

/* Submenu */
.submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  background: rgba(0, 0, 0, 0.1);
}

.menu-item.open .submenu {
  max-height: 500px;
}

.submenu-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-lg);
  padding-left: 52px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  transition: var(--transition);
}

.submenu-link:hover,
.submenu-link.active {
  color: var(--text-white);
  background: rgba(255, 255, 255, 0.05);
}

/* Main Content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  transition: var(--transition);
}

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

/* Header */
.header {
  height: var(--header-height);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.toggle-sidebar {
  background: none;
  border: none;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  border-radius: var(--border-radius-sm);
  transition: var(--transition);
}

.toggle-sidebar:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  font-size: 13px;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.breadcrumb-item:not(:last-child)::after {
  content: '/';
  color: var(--gray-400);
}

.breadcrumb-item.active {
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.header-action {
  background: none;
  border: none;
  padding: var(--spacing-sm);
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  transition: var(--transition);
  position: relative;
}

.header-action:hover {
  background: var(--gray-100);
  color: var(--text-primary);
}

.header-action .badge {
  position: absolute;
  top: 2px;
  right: 2px;
  background: var(--danger);
  color: white;
  font-size: 10px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.user-dropdown {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.user-dropdown:hover {
  background: var(--gray-100);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-weight: 600;
}

.user-info {
  text-align: left;
}

.user-name {
  font-weight: 500;
  font-size: 13px;
}

.user-role {
  font-size: 11px;
  color: var(--text-secondary);
}

/* Page Content */
.page-content {
  padding: var(--spacing-lg);
}

.page-header {
  margin-bottom: var(--spacing-lg);
}

.page-title {
  font-size: 24px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.page-description {
  color: var(--text-secondary);
  font-size: 14px;
}

/* =====================================================
   Cards
   ===================================================== */

.card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
}

.card-header {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
}

.card-body {
  padding: var(--spacing-lg);
}

.card-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  background: var(--gray-50);
  border-radius: 0 0 var(--border-radius-lg) var(--border-radius-lg);
}

/* Stat Cards */
.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  transition: var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon.green {
  background: var(--primary-100);
  color: var(--brand-primary);
}

.stat-icon.blue {
  background: #e3f2fd;
  color: #1976d2;
}

.stat-icon.orange {
  background: #fff3e0;
  color: #f57c00;
}

.stat-icon.red {
  background: #ffebee;
  color: #d32f2f;
}

.stat-icon.purple {
  background: #f3e5f5;
  color: #7b1fa2;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
}

.stat-content {
  flex: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  margin-top: var(--spacing-xs);
  padding: 2px 6px;
  border-radius: var(--border-radius-sm);
}

.stat-change.up {
  color: var(--success);
  background: var(--primary-50);
}

.stat-change.down {
  color: var(--danger);
  background: #ffebee;
}

/* Stats Row (alternate layout) */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stats-row .stat-card {
  display: block;
  padding: 20px;
}

.stat-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.stat-card-icon svg {
  width: 24px;
  height: 24px;
  color: white;
}

.stat-card-icon.green { background: var(--success-color); }
.stat-card-icon.blue { background: var(--info-color); }
.stat-card-icon.yellow { background: var(--warning-color); }
.stat-card-icon.orange { background: var(--warning-color); }
.stat-card-icon.purple { background: #7c3aed; }
.stat-card-icon.red { background: var(--danger-color); }

.stat-card-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

.stat-card-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.stat-card-change {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
}

.stat-card-change svg {
  width: 16px;
  height: 16px;
}

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

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

/* =====================================================
   Buttons
   ===================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--brand-primary);
  color: var(--text-white);
}

.btn-primary:hover {
  background: var(--brand-dark);
}

.btn-secondary {
  background: var(--gray-100);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--gray-200);
}

.btn-success {
  background: var(--success);
  color: var(--text-white);
}

.btn-success:hover {
  background: #43a047;
}

.btn-danger {
  background: var(--danger);
  color: var(--text-white);
}

.btn-danger:hover {
  background: #d32f2f;
}

.btn-warning {
  background: var(--warning);
  color: var(--text-white);
}

.btn-warning:hover {
  background: #f57c00;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--brand-primary);
  color: var(--brand-primary);
}

.btn-outline:hover {
  background: var(--brand-primary);
  color: var(--text-white);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 12px;
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 16px;
}

.btn-icon {
  padding: var(--spacing-sm);
}

.btn-group {
  display: inline-flex;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn:first-child {
  border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

/* =====================================================
   Forms
   ===================================================== */

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.form-label.required::after {
  content: '*';
  color: var(--danger);
  margin-left: 4px;
}

.form-control {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.form-control::placeholder {
  color: var(--text-light);
}

.form-control:disabled {
  background: var(--gray-100);
  cursor: not-allowed;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23757575' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.form-error {
  font-size: 12px;
  color: var(--danger);
  margin-top: var(--spacing-xs);
}

.form-inline {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.form-inline .form-group {
  margin-bottom: 0;
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.form-check-input {
  width: 18px;
  height: 18px;
  accent-color: var(--brand-primary);
  cursor: pointer;
}

.form-check-label {
  font-size: 14px;
  color: var(--text-primary);
  cursor: pointer;
}

/* Switch */
.form-switch {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.switch {
  position: relative;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--gray-300);
  transition: var(--transition);
  border-radius: 24px;
}

.switch-slider::before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  transition: var(--transition);
  border-radius: 50%;
}

.switch input:checked + .switch-slider {
  background-color: var(--brand-primary);
}

.switch input:checked + .switch-slider::before {
  transform: translateX(20px);
}

/* Search Box */
.search-box {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.search-box .search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-light);
}

.search-box input {
  padding-left: 40px;
  min-width: 240px;
}

/* =====================================================
   Tables
   ===================================================== */

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

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

.table th,
.table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--gray-50);
  white-space: nowrap;
}

.table td {
  color: var(--text-primary);
  font-size: 14px;
}

.table tbody tr:hover {
  background: var(--gray-50);
}

.table-striped tbody tr:nth-child(even) {
  background: var(--gray-50);
}

.table-actions {
  display: flex;
  gap: var(--spacing-xs);
}

/* =====================================================
   Badges & Tags
   ===================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
}

.badge-primary {
  background: var(--primary-100);
  color: var(--brand-primary);
}

.badge-success {
  background: #e8f5e9;
  color: #2e7d32;
}

.badge-warning {
  background: #fff3e0;
  color: #e65100;
}

.badge-danger {
  background: #ffebee;
  color: #c62828;
}

.badge-info {
  background: #e3f2fd;
  color: #1565c0;
}

.badge-secondary {
  background: var(--gray-200);
  color: var(--text-secondary);
}

/* Status Badge with dot */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 20px;
}

.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-badge.online {
  background: #e8f5e9;
  color: #2e7d32;
}

.status-badge.online::before {
  background: #4caf50;
}

.status-badge.offline {
  background: var(--gray-200);
  color: var(--text-secondary);
}

.status-badge.offline::before {
  background: var(--gray-500);
}

.status-badge.maintenance {
  background: #fff3e0;
  color: #e65100;
}

.status-badge.maintenance::before {
  background: #ff9800;
}

.status-badge.full {
  background: #ffebee;
  color: #c62828;
}

.status-badge.full::before {
  background: #f44336;
}

/* =====================================================
   Pagination
   ===================================================== */

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 13px;
}

.pagination-list {
  display: flex;
  gap: var(--spacing-xs);
}

.pagination-item {
  min-width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.pagination-item:hover {
  background: var(--gray-100);
  border-color: var(--gray-300);
}

.pagination-item.active {
  background: var(--brand-primary);
  color: var(--text-white);
  border-color: var(--brand-primary);
}

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

/* =====================================================
   Modal
   ===================================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

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

.modal {
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow: auto;
  transform: scale(0.9);
  transition: var(--transition);
}

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

.modal-lg {
  max-width: 800px;
}

.modal-sm {
  max-width: 400px;
}

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

.modal-title {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-sm);
}

/* =====================================================
   Tabs
   ===================================================== */

.tabs {
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.tab-item {
  padding: var(--spacing-md) 0;
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  position: relative;
  transition: var(--transition);
  border: none;
  background: none;
}

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

.tab-item.active {
  color: var(--brand-primary);
  font-weight: 500;
}

.tab-item.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-primary);
}

.tab-content {
  display: block;
}

.tab-pane {
  display: none;
}

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

/* Tabs Container */
.tabs-container {
  background: white;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.tabs-header {
  display: flex;
  border-bottom: 1px solid var(--border-color);
  padding: 0 20px;
  background: white;
}

.tab-btn {
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s;
}

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

.tab-btn.active {
  color: var(--brand-primary);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--brand-primary);
}

.tab-btn .badge {
  font-size: 12px;
  padding: 2px 8px;
}

/* Table Card (used for tabs with tables) */
.table-card {
  background: white;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.table-card .tabs-header {
  padding: 0 20px;
  border-bottom: 1px solid var(--border-color);
}

/* =====================================================
   Progress Bar
   ===================================================== */

.progress {
  height: 8px;
  background: var(--gray-200);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--brand-primary);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.progress-bar.success {
  background: var(--success);
}

.progress-bar.warning {
  background: var(--warning);
}

.progress-bar.danger {
  background: var(--danger);
}

/* =====================================================
   Alerts
   ===================================================== */

.alert {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.alert-success {
  background: #e8f5e9;
  border: 1px solid #a5d6a7;
  color: #2e7d32;
}

.alert-warning {
  background: #fff3e0;
  border: 1px solid #ffcc80;
  color: #e65100;
}

.alert-danger {
  background: #ffebee;
  border: 1px solid #ef9a9a;
  color: #c62828;
}

.alert-info {
  background: #e3f2fd;
  border: 1px solid #90caf9;
  color: #1565c0;
}

.alert-icon {
  flex-shrink: 0;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.alert-close {
  background: none;
  border: none;
  cursor: pointer;
  opacity: 0.5;
}

.alert-close:hover {
  opacity: 1;
}

/* =====================================================
   Dropdown
   ===================================================== */

.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 180px;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(4px);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}

.dropdown-item:hover {
  background: var(--gray-100);
}

.dropdown-item.danger {
  color: var(--danger);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--spacing-xs) 0;
}

/* =====================================================
   Charts Container
   ===================================================== */

.chart-container {
  position: relative;
  width: 100%;
  height: 300px;
}

.chart-container.sm {
  height: 200px;
}

.chart-container.lg {
  height: 400px;
}

/* =====================================================
   Grid System
   ===================================================== */

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(var(--spacing-md) * -1);
}

.col {
  flex: 1;
  padding: 0 var(--spacing-md);
}

.col-12 { flex: 0 0 100%; max-width: 100%; }
.col-6 { flex: 0 0 50%; max-width: 50%; }
.col-4 { flex: 0 0 33.333%; max-width: 33.333%; }
.col-3 { flex: 0 0 25%; max-width: 25%; }
.col-8 { flex: 0 0 66.666%; max-width: 66.666%; }

@media (max-width: 1024px) {
  .col-md-12 { flex: 0 0 100%; max-width: 100%; }
  .col-md-6 { flex: 0 0 50%; max-width: 50%; }
}

@media (max-width: 768px) {
  .col-sm-12 { flex: 0 0 100%; max-width: 100%; }
}

/* =====================================================
   Utilities
   ===================================================== */

.d-flex { display: flex; }
.d-none { display: none; }
.d-block { display: block; }

.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }

.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-primary { color: var(--brand-primary); }
.text-secondary { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }
.font-normal { font-weight: 400; }

.text-sm { font-size: 12px; }
.text-base { font-size: 14px; }
.text-lg { font-size: 16px; }
.text-xl { font-size: 18px; }
.text-2xl { font-size: 24px; }

.m-0 { margin: 0; }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.ml-auto { margin-left: auto; }

.p-0 { padding: 0; }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cursor-pointer { cursor: pointer; }

/* =====================================================
   Empty State
   ===================================================== */

.empty-state {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-lg);
}

.empty-state-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: var(--gray-100);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
}

.empty-state-title {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.empty-state-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

/* =====================================================
   Avatar
   ===================================================== */

.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: 12px;
}

.avatar-lg {
  width: 56px;
  height: 56px;
  font-size: 18px;
}

.avatar-group {
  display: flex;
}

.avatar-group .avatar {
  border: 2px solid white;
  margin-left: -8px;
}

.avatar-group .avatar:first-child {
  margin-left: 0;
}

/* =====================================================
   Timeline
   ===================================================== */

.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-lg);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -24px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--brand-primary);
  border: 2px solid white;
  box-shadow: 0 0 0 2px var(--brand-primary);
}

.timeline-dot.success {
  background: var(--success);
  box-shadow: 0 0 0 2px var(--success);
}

.timeline-dot.warning {
  background: var(--warning);
  box-shadow: 0 0 0 2px var(--warning);
}

.timeline-dot.danger {
  background: var(--danger);
  box-shadow: 0 0 0 2px var(--danger);
}

.timeline-content {
  padding-left: var(--spacing-md);
}

.timeline-time {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.timeline-title {
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
}

.timeline-description {
  color: var(--text-secondary);
  font-size: 13px;
}

/* =====================================================
   Map Container
   ===================================================== */

.map-container {
  width: 100%;
  height: 400px;
  background: var(--gray-100);
  border-radius: var(--border-radius);
  position: relative;
  overflow: hidden;
}

.map-placeholder {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-secondary);
}

/* =====================================================
   Responsive
   ===================================================== */

@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.mobile-open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

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

@media (max-width: 768px) {
  .header {
    padding: 0 var(--spacing-md);
  }

  .page-content {
    padding: var(--spacing-md);
  }

  .stat-cards {
    grid-template-columns: 1fr;
  }

  .user-info {
    display: none;
  }

  .table th,
  .table td {
    padding: var(--spacing-sm);
  }
}