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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
}

/* 头部 */
header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 1.1em;
    opacity: 0.9;
}

/* 标签页导航 */
.tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 2px solid #e9ecef;
}

.tab-btn {
    flex: 1;
    padding: 15px 20px;
    background: none;
    border: none;
    font-size: 1.1em;
    cursor: pointer;
    transition: all 0.3s;
    color: #666;
    font-weight: 500;
}

.tab-btn:hover {
    background: #e9ecef;
}

.tab-btn.active {
    background: white;
    color: #667eea;
    border-bottom: 3px solid #667eea;
}

/* 标签页内容 */
.tab-content {
    display: none;
    padding: 30px;
}

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

/* 区域头部 */
.section-header {
    margin-bottom: 25px;
}

.section-header h2 {
    color: #333;
    margin-bottom: 15px;
}

.controls {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    align-items: center;
}

.controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    color: #555;
}

.controls select,
.controls input {
    padding: 8px 12px;
    border: 2px solid #e9ecef;
    border-radius: 6px;
    font-size: 0.95em;
    transition: border-color 0.3s;
}

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

.btn-primary {
    padding: 10px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    padding: 10px 20px;
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.95em;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(240, 147, 251, 0.4);
}

/* 统计卡片 */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.stat-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    border-radius: 12px;
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.stat-card h3 {
    font-size: 0.9em;
    opacity: 0.9;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 1.8em;
    font-weight: bold;
}

/* 表格样式 */
.table-container {
    overflow-x: auto;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

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

thead {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

thead th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 0.95em;
}

tbody tr {
    border-bottom: 1px solid #e9ecef;
    transition: background 0.2s;
}

tbody tr:hover {
    background: #f8f9fa;
}

tbody td {
    padding: 12px 15px;
    font-size: 0.9em;
}

/* 颜色标记 */
.positive {
    color: #28a745;
    font-weight: 600;
}

.negative {
    color: #dc3545;
    font-weight: 600;
}

.neutral {
    color: #6c757d;
}

.font-bold {
    font-weight: 900 !important;
    font-size: 1.05em;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
}

.badge-win {
    background: #28a745;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 600;
}

.badge-loss {
    background: #dc3545;
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 600;
}

/* 图表容器 */
.chart-container {
    position: relative;
    height: 500px;
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* 对比网格 */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.compare-card {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.compare-card h3 {
    color: #667eea;
    margin-bottom: 15px;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 10px;
}

.stats-list p {
    margin: 8px 0;
    padding: 8px;
    background: #f8f9fa;
    border-radius: 6px;
}

/* 分析网格 */
.analytics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 25px;
}

.chart-box {
    background: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.chart-box h3 {
    color: #667eea;
    margin-bottom: 15px;
    text-align: center;
}

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

/* 页脚 */
footer {
    background: #f8f9fa;
    padding: 20px;
    text-align: center;
    color: #666;
    margin-top: 30px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header h1 {
        font-size: 1.8em;
    }

    .tabs {
        flex-direction: column;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
    }

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

    .chart-container {
        height: 300px;
    }
}
