/* 全局样式 */
:root {
  --primary-color: #1890ff;
  --success-color: #52c41a;
  --warning-color: #faad14;
  --danger-color: #f5222d;
  --info-color: #1890ff;
  --text-color: #333;
  --border-color: #d9d9d9;
  --bg-color: #f0f2f5;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
}

/* 侧边栏 */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 250px;
  height: 100vh;
  background: linear-gradient(180deg, #1e3c72 0%, #2a5298 100%);
  color: white;
  overflow-y: auto;
  transition: all 0.3s;
  z-index: 1000;
}

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

.sidebar-header h3 {
  margin: 0;
  font-size: 24px;
  font-weight: bold;
}

.sidebar-menu {
  list-style: none;
  padding: 20px 0;
}

.sidebar-menu li {
  margin: 5px 0;
}

.sidebar-menu a {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: all 0.3s;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  padding-left: 30px;
}

.sidebar-menu i {
  margin-right: 10px;
  font-size: 18px;
}

/* 主内容区 */
.main-content {
  margin-left: 250px;
  min-height: 100vh;
  transition: all 0.3s;
}

/* 顶部导航栏 */
.top-navbar {
  background: white;
  padding: 15px 30px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.top-navbar h4 {
  margin: 0;
  color: var(--text-color);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 15px;
}

.user-info img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
}

/* 内容容器 */
.content-container {
  padding: 30px;
}

/* 卡片 */
.card {
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  margin-bottom: 20px;
}

.card-header {
  padding: 15px 20px;
  border-bottom: 1px solid var(--border-color);
  font-weight: bold;
  font-size: 16px;
}

.card-body {
  padding: 20px;
}

/* 统计卡片 */
.stat-card {
  background: white;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stat-card-content h3 {
  margin: 0 0 5px 0;
  font-size: 28px;
  font-weight: bold;
}

.stat-card-content p {
  margin: 0;
  color: #666;
  font-size: 14px;
}

.stat-card-icon {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
}

.stat-card-icon.primary {
  background: rgba(24, 144, 255, 0.1);
  color: var(--primary-color);
}

.stat-card-icon.success {
  background: rgba(82, 196, 26, 0.1);
  color: var(--success-color);
}

.stat-card-icon.warning {
  background: rgba(250, 173, 20, 0.1);
  color: var(--warning-color);
}

.stat-card-icon.danger {
  background: rgba(245, 34, 45, 0.1);
  color: var(--danger-color);
}

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

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

.data-table th,
.data-table td {
  padding: 12px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background: #fafafa;
  font-weight: bold;
  color: var(--text-color);
}

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

/* 按钮 */
.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}

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

.btn-primary:hover {
  background: #096dd9;
}

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

.btn-success:hover {
  background: #389e0d;
}

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

.btn-danger:hover {
  background: #cf1322;
}

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

.btn-warning:hover {
  background: #d48806;
}

.btn-sm {
  padding: 4px 8px;
  font-size: 12px;
}

/* 徽章 */
.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: normal;
}

.badge-primary {
  background: rgba(24, 144, 255, 0.1);
  color: var(--primary-color);
}

.badge-success {
  background: rgba(82, 196, 26, 0.1);
  color: var(--success-color);
}

.badge-warning {
  background: rgba(250, 173, 20, 0.1);
  color: var(--warning-color);
}

.badge-danger {
  background: rgba(245, 34, 45, 0.1);
  color: var(--danger-color);
}

.badge-secondary {
  background: rgba(0, 0, 0, 0.05);
  color: #666;
}

/* 表单 */
.form-group {
  margin-bottom: 15px;
}

.form-label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-size: 14px;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
}

/* 加载动画 */
.loading {
  text-align: center;
  padding: 40px;
  color: #999;
}

.spinner {
  border: 3px solid #f3f3f3;
  border-top: 3px solid var(--primary-color);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto 10px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* 响应式 */
@media (max-width: 768px) {
  .sidebar {
    width: 0;
    overflow: hidden;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .content-container {
    padding: 15px;
  }
}