/* 简洁现代的头歌数据管理界面 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.app {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 顶部栏 */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: white;
    padding: 20px 30px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.header h1 {
    font-size: 24px;
    font-weight: 600;
    color: #2c3e50;
}

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

/* 按钮样式 */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background: #3498db;
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

.btn.secondary {
    background: #95a5a6;
}

.btn.secondary:hover {
    background: #7f8c8d;
}

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

.card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.2s ease;
}

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

.card-title {
    font-size: 14px;
    color: #7f8c8d;
    margin-bottom: 8px;
}

.card-value {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
}

/* 搜索栏 */
.search {
    display: flex;
    gap: 12px;
    margin-bottom: 30px;
    align-items: center;
}

.search input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid #ecf0f1;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.2s ease;
}

.search input:focus {
    outline: none;
    border-color: #3498db;
}

/* 表格区域 */
.table-wrapper {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 30px;
    overflow: hidden;
}

.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #ecf0f1;
}

.table-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
}

.table-header select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
}

.table-container {
    overflow-x: auto;
}

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

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #f8f9fa;
}

th {
    background: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
    font-size: 14px;
}

td {
    font-size: 14px;
    color: #555;
}

tbody tr:hover {
    background: #f8f9fa;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
    font-style: italic;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    gap: 8px;
}

.pagination button {
    padding: 8px 12px;
    border: 1px solid #ddd;
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

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

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

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

.pagination button:disabled:hover {
    background: white;
    color: #333;
    border-color: #ddd;
}

/* 图表区域 */
.charts {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 20px;
}

.chart-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.chart-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 20px;
}

.chart-card canvas {
    max-height: 300px;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid #ecf0f1;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: #2c3e50;
}

.close {
    font-size: 24px;
    color: #aaa;
    cursor: pointer;
    transition: color 0.2s ease;
}

.close:hover {
    color: #e74c3c;
}

.modal-body {
    padding: 30px;
}

.user-detail {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.detail-item {
    padding: 16px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

.detail-label {
    font-size: 12px;
    font-weight: 600;
    color: #7f8c8d;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.detail-value {
    font-size: 14px;
    color: #2c3e50;
}

/* 操作按钮 */
.action-btn {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    background: #3498db;
    color: white;
}

.action-btn:hover {
    background: #2980b9;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .app {
        padding: 15px;
    }
    
    .header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .search {
        flex-direction: column;
    }
    
    .search input {
        width: 100%;
    }
    
    .table-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .charts {
        grid-template-columns: 1fr;
    }
    
    .chart-card {
        padding: 16px;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .modal-header, .modal-body {
        padding: 20px;
    }
    
    .user-detail {
        grid-template-columns: 1fr;
    }
    
    /* 表格滚动 */
    .table-container {
        overflow-x: scroll;
    }
    
    table {
        min-width: 800px;
    }
    
    th, td {
        padding: 8px 12px;
        font-size: 13px;
    }
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* 状态指示器 */
.status-online {
    color: #27ae60;
}

.status-offline {
    color: #e74c3c;
}

/* 加载动画 */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.loading-spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 8px;
}

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

.tooltip:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    z-index: 1000;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #7f8c8d;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

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

/* 成功/错误提示 */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    z-index: 1001;
    animation: slideInRight 0.3s ease;
}

.toast.success {
    background: #27ae60;
}

.toast.error {
    background: #e74c3c;
}

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