/* ================================================
   能源科技充电桩管理系统 - 管理后台全局样式
   ================================================ */

:root {
  /* 主色调 */
  --primary: #0077b6;
  --primary-light: #00b4d8;
  --primary-lighter: #90e0ef;
  --primary-bg: #e0f2fe;

  /* 辅助色 */
  --success: #16a34a;
  --success-bg: #dcfce7;
  --warning: #d97706;
  --warning-bg: #fef3c7;
  --danger: #dc2626;
  --danger-bg: #fee2e2;
  --info: #0891b2;
  --info-bg: #e0f2fe;

  /* 中性色 */
  --bg-page: #f8f9fc;
  --bg-card: #ffffff;
  --bg-sidebar: #0d1b2a;
  --bg-sidebar-hover: #1a3a5c;
  --text-primary: #1a1a2e;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --border: #e2e8f0;
  --border-light: #f1f5f9;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-lg: 0 4px 16px rgba(0,0,0,0.12);

  /* 圆角 */
  --radius-sm: 4px;
  --radius: 8px;
  --radius-lg: 12px;

  /* 间距 */
  --sidebar-width: 240px;
  --header-height: 64px;
}

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

body {
  font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-page);
  min-height: 100vh;
}

/* ================================================
   登录页样式
   ================================================ */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0077b6 0%, #00b4d8 50%, #48cae4 100%);
  padding: 20px;
}

.login-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 420px;
  padding: 48px 40px;
}

.login-logo {
  text-align: center;
  margin-bottom: 40px;
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.login-logo p {
  color: var(--text-secondary);
  font-size: 14px;
}

.login-form .form-group {
  margin-bottom: 20px;
}

.login-form label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.login-form input[type="text"],
.login-form input[type="password"] {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  transition: all 0.2s;
}

.login-form input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

.login-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  font-size: 13px;
}

.login-options label {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: var(--text-secondary);
}

.login-options a {
  color: var(--primary);
  text-decoration: none;
}

.login-options a:hover {
  text-decoration: underline;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  width: 100%;
}

.btn-primary:hover {
  background: #005f92;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

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

.btn-secondary:hover {
  background: var(--border-light);
}

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

.btn-success:hover {
  background: #15803d;
}

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

.btn-danger:hover {
  background: #b91c1c;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-sm);
}

/* ================================================
   布局 - 主框架
   ================================================ */
.app-wrapper {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-sidebar);
  color: #fff;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
  transition: transform 0.3s;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-logo {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-logo svg {
  width: 32px;
  height: 32px;
}

.sidebar-nav {
  padding: 16px 0;
}

.nav-section {
  margin-bottom: 8px;
}

.nav-section-title {
  padding: 8px 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: rgba(255,255,255,0.4);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 14px;
  transition: all 0.2s;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background: var(--bg-sidebar-hover);
  color: #fff;
}

.nav-item.active {
  background: var(--bg-sidebar-hover);
  color: #fff;
  border-left-color: var(--primary-light);
}

.nav-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 10px;
}

/* 主内容区 */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
}

/* 顶部栏 */
.topbar {
  background: var(--bg-card);
  height: var(--header-height);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-left h1 {
  font-size: 18px;
  font-weight: 600;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.topbar-search {
  display: flex;
  align-items: center;
  background: var(--bg-page);
  border-radius: var(--radius);
  padding: 8px 12px;
  gap: 8px;
}

.topbar-search input {
  border: none;
  background: transparent;
  font-size: 14px;
  width: 200px;
  outline: none;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  padding: 8px 12px;
  border-radius: var(--radius);
  transition: background 0.2s;
}

.topbar-user:hover {
  background: var(--bg-page);
}

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

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

.topbar-user-info .name {
  font-weight: 500;
  font-size: 14px;
}

.topbar-user-info .role {
  font-size: 12px;
  color: var(--text-secondary);
}

/* 内容区 */
.page-content {
  padding: 24px;
}

/* 页面标题 */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title {
  font-size: 20px;
  font-weight: 600;
}

.page-actions {
  display: flex;
  gap: 12px;
}

/* ================================================
   卡片
   ================================================ */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-title {
  font-size: 16px;
  font-weight: 600;
}

.card-body {
  padding: 20px;
}

.card-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-light);
  background: var(--bg-page);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ================================================
   统计卡片
   ================================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

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

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

.stat-card-icon.blue { background: var(--primary-bg); color: var(--primary); }
.stat-card-icon.green { background: var(--success-bg); color: var(--success); }
.stat-card-icon.orange { background: var(--warning-bg); color: var(--warning); }
.stat-card-icon.red { background: var(--danger-bg); color: var(--danger); }

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

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

.stat-trend.up { color: var(--success); }
.stat-trend.down { color: var(--danger); }

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

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

/* ================================================
   表格
   ================================================ */
.table-wrapper {
  overflow-x: auto;
}

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

th, td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border-light);
}

th {
  background: var(--bg-page);
  font-weight: 600;
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

tbody tr {
  transition: background 0.15s;
}

tbody tr:hover {
  background: var(--bg-page);
}

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

/* ================================================
   状态标签
   ================================================ */
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

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

.status-success { background: var(--success-bg); color: var(--success); }
.status-success::before { background: var(--success); }

.status-warning { background: var(--warning-bg); color: var(--warning); }
.status-warning::before { background: var(--warning); }

.status-danger { background: var(--danger-bg); color: var(--danger); }
.status-danger::before { background: var(--danger); }

.status-info { background: var(--info-bg); color: var(--info); }
.status-info::before { background: var(--info); }

.status-default { background: var(--bg-page); color: var(--text-secondary); }
.status-default::before { background: var(--text-muted); }

/* ================================================
   徽章
   ================================================ */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
}

.badge-primary { background: var(--primary-bg); color: var(--primary); }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }

/* ================================================
   表单
   ================================================ */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  transition: all 0.2s;
  background: var(--bg-card);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

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

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

.form-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
}

.form-checkbox input {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* ================================================
   搜索和筛选
   ================================================ */
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 16px;
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.search-box input {
  border: none;
  padding: 10px 14px;
  font-size: 14px;
  width: 280px;
  outline: none;
}

.search-box button {
  border: none;
  background: transparent;
  padding: 10px 14px;
  color: var(--text-secondary);
  cursor: pointer;
}

.search-box button:hover {
  color: var(--primary);
}

.filters {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.filter-item label {
  font-size: 13px;
  color: var(--text-secondary);
}

.filter-item select {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  background: var(--bg-card);
  cursor: pointer;
}

/* ================================================
   分页
   ================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

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

.pagination-controls {
  display: flex;
  gap: 4px;
}

.pagination-controls button {
  padding: 8px 12px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}

.pagination-controls button:hover:not(:disabled) {
  background: var(--primary-bg);
  border-color: var(--primary);
  color: var(--primary);
}

.pagination-controls button.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

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

/* ================================================
   模态框
   ================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s;
}

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

.modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform 0.2s;
}

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

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}

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

.modal-body {
  padding: 24px;
  overflow-y: auto;
  max-height: calc(90vh - 140px);
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* ================================================
   标签页
   ================================================ */
.tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 24px;
}

.tab {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

/* ================================================
   步骤条
   ================================================ */
.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 32px 0;
}

.step {
  display: flex;
  align-items: center;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
}

.step.active .step-number {
  background: var(--primary);
  color: #fff;
}

.step.completed .step-number {
  background: var(--success);
  color: #fff;
}

.step-title {
  margin-left: 10px;
  font-weight: 500;
  color: var(--text-secondary);
}

.step.active .step-title {
  color: var(--text-primary);
}

.step-connector {
  width: 80px;
  height: 2px;
  background: var(--border);
  margin: 0 16px;
}

.step.completed + .step .step-connector,
.step-connector.completed {
  background: var(--success);
}

/* ================================================
   空状态
   ================================================ */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-state svg {
  width: 80px;
  height: 80px;
  color: var(--border);
  margin-bottom: 16px;
}

.empty-state h3 {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.empty-state p {
  font-size: 14px;
  margin-bottom: 20px;
}

/* ================================================
   通知提示
   ================================================ */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toast {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 300px;
  animation: slideIn 0.3s ease;
}

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

.toast-success {
  border-left: 4px solid var(--success);
}

.toast-error {
  border-left: 4px solid var(--danger);
}

.toast-warning {
  border-left: 4px solid var(--warning);
}

.toast-info {
  border-left: 4px solid var(--primary);
}

.toast-icon {
  width: 24px;
  height: 24px;
}

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

.toast-message {
  flex: 1;
  font-size: 14px;
}

.toast-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
}

/* ================================================
   加载状态
   ================================================ */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* ================================================
   图表容器
   ================================================ */
.chart-container {
  height: 300px;
  padding: 16px;
}

/* ================================================
   详情卡片
   ================================================ */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.detail-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border-light);
}

.detail-item:last-child {
  border-bottom: none;
}

.detail-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.detail-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

/* ================================================
   操作按钮组
   ================================================ */
.action-buttons {
  display: flex;
  gap: 8px;
}

/* ================================================
   下拉菜单
   ================================================ */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-card);
  cursor: pointer;
  font-size: 14px;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 160px;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.2s;
}

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

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text-primary);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s;
}

.dropdown-item:hover {
  background: var(--bg-page);
}

.dropdown-item svg {
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
}

/* ================================================
   时间线
   ================================================ */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

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

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

.timeline-dot {
  position: absolute;
  left: -18px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--bg-card);
}

.timeline-content {
  background: var(--bg-page);
  border-radius: var(--radius);
  padding: 16px;
}

.timeline-time {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.timeline-title {
  font-weight: 500;
  margin-bottom: 4px;
}

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

/* ================================================
   折叠面板
   ================================================ */
.collapse-item {
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin-bottom: 8px;
  overflow: hidden;
}

.collapse-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  background: var(--bg-card);
  cursor: pointer;
  transition: background 0.15s;
}

.collapse-header:hover {
  background: var(--bg-page);
}

.collapse-title {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}

.collapse-body {
  padding: 16px;
  background: var(--bg-page);
  display: none;
}

.collapse-item.active .collapse-body {
  display: block;
}

/* ================================================
   进度条
   ================================================ */
.progress {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

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

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

/* ================================================
   响应式
   ================================================ */
@media (max-width: 1200px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

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

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

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .filters {
    flex-direction: column;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}