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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: #f5f7fa;
  color: #333;
}

/* 登录页面 */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
  background: white;
  padding: 40px;
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 400px;
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header h1 {
  font-size: 28px;
  margin-bottom: 10px;
}

.login-header p {
  color: #999;
  font-size: 14px;
}

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

.login-form label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.login-form input {
  width: 100%;
  padding: 12px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  transition: border-color 0.3s;
}

.login-form input:focus {
  outline: none;
  border-color: #667eea;
}

.login-btn {
  width: 100%;
  padding: 12px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s;
}

.login-btn:hover {
  transform: translateY(-2px);
}

/* 主页面 */
.main-page {
  display: flex;
  min-height: 100vh;
}

/* 侧边栏 */
.sidebar {
  width: 250px;
  background: #2c3e50;
  color: white;
  display: flex;
  flex-direction: column;
  position: fixed;
  height: 100vh;
}

.logo {
  padding: 20px;
  text-align: center;
  border-bottom: 1px solid #34495e;
}

.logo h2 {
  font-size: 20px;
  margin: 0;
}

.menu {
  flex: 1;
  padding: 20px 0;
}

.menu-item {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  cursor: pointer;
  transition: background 0.3s;
}

.menu-item:hover {
  background: #34495e;
}

.menu-item.active {
  background: #3498db;
}

.menu-item span:first-child {
  margin-right: 10px;
  font-size: 18px;
}

.logout-btn {
  padding: 15px 20px;
  border-top: 1px solid #34495e;
  cursor: pointer;
  display: flex;
  align-items: center;
  transition: background 0.3s;
}

.logout-btn:hover {
  background: #e74c3c;
}

.logout-btn span:first-child {
  margin-right: 10px;
}

/* 主内容区 */
.main-content {
  margin-left: 250px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.top-bar {
  background: white;
  padding: 20px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.top-bar h2 {
  margin: 0;
  font-size: 24px;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.content-area {
  padding: 30px;
  flex: 1;
}

/* 页面内容 */
.page-content {
  display: none;
}

.page-content.active {
  display: block;
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: white;
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  gap: 20px;
}

.stat-icon {
  font-size: 40px;
}

.stat-number {
  font-size: 32px;
  font-weight: bold;
  color: #3498db;
  margin: 5px 0 0;
}

.stat-info h3 {
  margin: 0;
  font-size: 14px;
  color: #999;
}

/* 页面头部 */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.search-box {
  display: flex;
  gap: 10px;
}

.search-box input,
.search-box select {
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.search-box input {
  width: 200px;
}

/* 表格 */
.data-table {
  width: 100%;
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.data-table thead {
  background: #f8f9fa;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid #eee;
}

.data-table th {
  font-weight: 600;
  color: #666;
}

.data-table tr:hover {
  background: #f8f9fa;
}

/* 按钮 */
.btn-primary,
.btn-secondary,
.btn-success,
.btn-danger,
.btn-warning {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-primary {
  background: #3498db;
  color: white;
}

.btn-secondary {
  background: #95a5a6;
  color: white;
}

.btn-success {
  background: #2ecc71;
  color: white;
}

.btn-danger {
  background: #e74c3c;
  color: white;
}

.btn-warning {
  background: #f39c12;
  color: white;
}

.btn-primary:hover,
.btn-secondary:hover,
.btn-success:hover,
.btn-danger:hover,
.btn-warning:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* 状态标签 */
.status-badge {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.status-success {
  background: #d4edda;
  color: #155724;
}

.status-danger {
  background: #f8d7da;
  color: #721c24;
}

.status-warning {
  background: #fff3cd;
  color: #856404;
}

.status-info {
  background: #d1ecf1;
  color: #0c5460;
}

/* 模态框 */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  border-radius: 10px;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  padding: 20px;
  border-bottom: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  margin: 0;
}

.close {
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
}

.modal-body {
  padding: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.required {
  color: #e74c3c;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
}

.form-group textarea {
  resize: vertical;
}

.checkbox-group {
  display: flex;
  gap: 16px;
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: 6px;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
}

.modal-footer {
  padding: 20px;
  border-top: 1px solid #eee;
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}

.pagination button {
  padding: 8px 16px;
  border: 1px solid #ddd;
  background: white;
  border-radius: 4px;
  cursor: pointer;
}

.pagination button:hover {
  background: #f8f9fa;
}

.pagination button.active {
  background: #3498db;
  color: white;
  border-color: #3498db;
}

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

/* 轮播图列表 */
.banner-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.banner-item {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.banner-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: #f0f0f0;
}

.banner-info {
  padding: 16px;
}

.banner-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

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

/* 图片上传区域 */
.upload-area {
  border: 2px dashed #ddd;
  border-radius: 8px;
  padding: 16px;
  text-align: center;
  background: #fafafa;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.upload-area:hover {
  border-color: #3498db;
  background: #f0f8ff;
}

/* 弹窗底部按钮 */
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid #eee;
}

.btn-default {
  padding: 8px 16px;
  border: 1px solid #ddd;
  border-radius: 4px;
  background: white;
  cursor: pointer;
  font-size: 14px;
}

.btn-default:hover {
  background: #f8f9fa;
}

/* 响应式 */
@media (max-width: 768px) {
  .sidebar {
    width: 200px;
  }

  .main-content {
    margin-left: 200px;
  }

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


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

/* 规格表格样式 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 8px;
}
.spec-table th {
  background: #f0f0f0;
  padding: 8px 10px;
  font-size: 13px;
  font-weight: 600;
  color: #555;
  border: 1px solid #e0e0e0;
  text-align: center;
}
.spec-table td {
  padding: 6px 8px;
  border: 1px solid #e0e0e0;
  vertical-align: middle;
}
.spec-table tbody tr:hover {
  background: #fafafa;
}

/* ==================== 客户统计样式 ==================== */

/* 用户卡片高亮 */
.stat-card-users {
  border-left: 4px solid #3498db;
}

.stat-card-sm {
  padding: 16px 20px;
}

.stat-sub {
  font-size: 12px;
  color: #27ae60;
  margin-top: 4px;
}

.stat-number-green {
  color: #2ecc71;
}

.stat-number-blue {
  color: #3498db;
}

.stat-number-purple {
  color: #9b59b6;
}

/* 图表卡片 */
.chart-card {
  background: white;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  padding: 24px;
  overflow: hidden;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}

.chart-header h3 {
  margin: 0;
  font-size: 16px;
  color: #333;
}

.chart-legend {
  display: flex;
  gap: 20px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: #666;
}

.legend-color {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 2px;
}

.legend-color-green {
  background: #2ecc71;
}

.legend-color-blue {
  background: #3498db;
}

.chart-container {
  width: 100%;
  overflow-x: auto;
}

.chart-container canvas {
  display: block;
}