/* Admin CSS - 管理员界面样式 */

/* 基础样式 */
.admin-container {
    background-color: #f8f9fa;
    min-height: 100vh;
}

.admin-sidebar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    box-shadow: 2px 0 10px rgba(0,0,0,0.1);
}

.admin-content {
    padding: 2rem;
}

/* 卡片样式 */
.admin-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    border: none;
    transition: all 0.3s ease;
}

.admin-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 统计卡片 */
.stats-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.stats-card .stats-number {
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stats-card .stats-label {
    opacity: 0.9;
    font-size: 0.9rem;
}

/* 表格样式 */
.admin-table {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
}

.admin-table th {
    background-color: #f8f9fa;
    border: none;
    font-weight: 600;
    color: #495057;
    padding: 1rem;
}

.admin-table td {
    border: none;
    padding: 1rem;
    vertical-align: middle;
}

.admin-table tbody tr {
    border-bottom: 1px solid #f1f3f4;
    transition: background-color 0.2s ease;
}

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

/* 按钮样式 */
.btn-admin-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-admin-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-admin-secondary {
    background-color: #6c757d;
    border: none;
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-weight: 500;
    color: white;
    transition: all 0.3s ease;
}

.btn-admin-secondary:hover {
    background-color: #5a6268;
    transform: translateY(-1px);
}

/* 表单样式 */
.admin-form-control {
    border: 2px solid #e9ecef;
    border-radius: 8px;
    padding: 0.75rem;
    transition: all 0.3s ease;
}

.admin-form-control:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* 导航样式 */
.admin-nav {
    padding: 1rem 0;
}

.admin-nav .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.admin-nav .nav-link:hover,
.admin-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

/* 状态标签 */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

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

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

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

/* 响应式设计 */
@media (max-width: 768px) {
    .admin-sidebar {
        min-height: auto;
    }
    
    .admin-content {
        padding: 1rem;
    }
    
    .stats-card {
        margin-bottom: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 工具提示 */
.admin-tooltip {
    position: relative;
    cursor: help;
}

.admin-tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: #333;
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    z-index: 1000;
}