/* 全局样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: #f5f5f5;
  color: #333;
  line-height: 1.6;
}

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

.login-container {
  width: 100%;
  max-width: 400px;
  padding: 20px;
}

.login-box {
  background: white;
  border-radius: 12px;
  padding: 40px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.login-title {
  text-align: center;
  font-size: 28px;
  margin-bottom: 30px;
  color: #333;
}

.login-form {
  margin-top: 20px;
}

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

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #555;
}

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

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #667eea;
}

.error-message {
  margin-top: 15px;
  padding: 12px;
  background-color: #fee;
  color: #c33;
  border-radius: 6px;
  font-size: 14px;
}

/* 按钮样式 */
.btn {
  padding: 12px 24px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-block;
  text-align: center;
  text-decoration: none;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background-color: #667eea;
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background-color: #5568d3;
}

.btn-secondary {
  background-color: #6c757d;
  color: white;
}

.btn-secondary:hover:not(:disabled) {
  background-color: #5a6268;
}

.btn-danger {
  background-color: #dc3545;
  color: white;
}

.btn-danger:hover:not(:disabled) {
  background-color: #c82333;
}

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

.btn-block {
  width: 100%;
  display: block;
}

.btn-loading {
  display: none;
}

/* 管理后台页面 */
#adminPage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-header {
  background: white;
  padding: 20px 30px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.admin-title {
  font-size: 24px;
  color: #333;
}

.admin-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.admin-user {
  color: #666;
  font-size: 14px;
}

.admin-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* 侧边栏 */
.sidebar {
  width: 250px;
  background: white;
  box-shadow: 2px 0 4px rgba(0, 0, 0, 0.05);
  overflow-y: auto;
}

.sidebar-nav {
  padding: 20px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  padding: 15px 25px;
  color: #666;
  text-decoration: none;
  transition: all 0.3s;
  border-left: 3px solid transparent;
}

.nav-item:hover {
  background-color: #f8f9fa;
  color: #667eea;
}

.nav-item.active {
  background-color: #f0f4ff;
  color: #667eea;
  border-left-color: #667eea;
  font-weight: 500;
}

.nav-icon {
  margin-right: 12px;
  font-size: 18px;
}

.nav-text {
  font-size: 14px;
}

/* 主内容区 */
.main-content {
  flex: 1;
  padding: 30px;
  overflow-y: auto;
}

.content-section {
  display: none;
}

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

.section-title {
  font-size: 24px;
  margin-bottom: 25px;
  color: #333;
}

.section-actions {
  margin-bottom: 20px;
  display: flex;
  gap: 10px;
}

/* 统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: white;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: bold;
  color: #667eea;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: #666;
}

/* 表单容器 */
.form-container {
  background: white;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  margin-bottom: 30px;
}

.admin-form {
  max-width: 600px;
}

.form-actions {
  margin-top: 20px;
  display: flex;
  gap: 10px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: auto;
  margin-right: 8px;
}

/* 上传进度条样式 */
.progress {
  width: 100%;
  height: 20px;
  background-color: #f0f0f0;
  border-radius: 10px;
  overflow: hidden;
  margin: 10px 0;
}

.progress-bar {
  height: 100%;
  background-color: #667eea;
  transition: width 0.3s ease;
  border-radius: 10px;
}

/* 表单说明文字 */
.form-text {
  font-size: 12px;
  color: #666;
  margin: 5px 0;
}

/* 列表容器 */
.list-container {
  background: white;
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.list-container h3 {
  margin-bottom: 20px;
  font-size: 18px;
  color: #333;
}

.categories-list,
.banners-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.category-item,
.banner-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  transition: all 0.3s;
}

.category-item:hover,
.banner-item:hover {
  border-color: #667eea;
  background-color: #f8f9fa;
}

.category-info,
.banner-info {
  display: flex;
  align-items: center;
  gap: 15px;
  flex: 1;
}

.category-icon {
  font-size: 24px;
}

.category-name {
  font-weight: 500;
  color: #333;
}

.category-sort {
  color: #999;
  font-size: 12px;
}

.banner-image {
  width: 100px;
  height: 60px;
  object-fit: cover;
  border-radius: 4px;
}

.banner-info h4 {
  font-size: 16px;
  margin-bottom: 5px;
  color: #333;
}

.banner-info p {
  font-size: 12px;
  color: #999;
  margin: 2px 0;
}

.category-actions,
.banner-actions {
  display: flex;
  gap: 10px;
}

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

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

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

.data-table th {
  padding: 15px;
  text-align: left;
  font-weight: 500;
  color: #333;
  border-bottom: 2px solid #e0e0e0;
}

.data-table td {
  padding: 15px;
  border-bottom: 1px solid #e0e0e0;
}

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

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

.empty-list,
.loading {
  text-align: center;
  padding: 40px;
  color: #999;
}

.error {
  text-align: center;
  padding: 40px;
  color: #c33;
}

/* 标签页 */
.tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  border-bottom: 2px solid #e0e0e0;
}

.tab-btn {
  padding: 12px 24px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-size: 14px;
  color: #666;
  transition: all 0.3s;
  margin-bottom: -2px;
}

.tab-btn:hover {
  color: #667eea;
}

.tab-btn.active {
  color: #667eea;
  border-bottom-color: #667eea;
  font-weight: 500;
}

.tab-content {
  margin-top: 20px;
}

.tab-pane {
  display: none;
}

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

/* 初始化数据提示 */
.init-data-prompt {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 8px;
  padding: 20px;
  margin-top: 20px;
}

.prompt-content {
  text-align: center;
}

.prompt-content p {
  margin-bottom: 15px;
  color: #856404;
}

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

.modal-content {
  background: white;
  border-radius: 8px;
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.modal-header {
  padding: 20px 25px;
  border-bottom: 1px solid #e0e0e0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h3 {
  font-size: 20px;
  color: #333;
}

.modal-close {
  background: none;
  border: none;
  font-size: 28px;
  color: #999;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  color: #333;
}

.modal-body {
  padding: 25px;
}

/* 商品封面预览图片样式 */
.upload-container {
  margin-top: 10px;
}

.cover-preview {
  margin-top: 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.cover-preview img {
  max-width: 200px;
  max-height: 200px;
  width: auto;
  height: auto;
  object-fit: contain;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 5px;
  background-color: #f9f9f9;
}

/* 提示消息 */
.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 15px 20px;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  z-index: 2000;
  min-width: 200px;
  max-width: 400px;
}

.toast-success {
  background-color: #d4edda;
  color: #155724;
  border: 1px solid #c3e6cb;
}

.toast-error {
  background-color: #f8d7da;
  color: #721c24;
  border: 1px solid #f5c6cb;
}

.toast-info {
  background-color: #d1ecf1;
  color: #0c5460;
  border: 1px solid #bee5eb;
}

/* 响应式设计 */
@media (max-width: 768px) {
  .admin-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    max-height: 200px;
  }

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

  .category-item,
  .banner-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .category-actions,
  .banner-actions {
    width: 100%;
    justify-content: flex-end;
  }
}