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

/* ===== CSS变量定义 - 多样化色彩搭配 ===== */
:root {
    /* 主色调 */
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    /* 渐变色彩 */
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --gradient-5: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --gradient-6: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
    --gradient-7: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    --gradient-8: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    --gradient-9: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    --gradient-10: linear-gradient(135deg, #ff6b6b 0%, #feca57 100%);
    
    /* 背景色 */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-dark: #1e293b;
    --bg-light: #f1f5f9;
    
    /* 文字颜色 */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --text-white: #ffffff;
    
    /* 边框和阴影 */
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* 动画 */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ===== 基础样式 ===== */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ===== 头部样式 ===== */
.header {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
}

.header-content {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.main-title {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    line-height: 1.2;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 400;
}

/* ===== 导航标签 ===== */
.nav-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.tab-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.tab-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tab-btn.active {
    background: var(--gradient-1);
    color: var(--text-white);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width var(--transition-normal), height var(--transition-normal);
}

.tab-btn:active::before {
    width: 300px;
    height: 300px;
}

/* ===== 主要内容区域 ===== */
.main-content {
    margin-bottom: var(--spacing-2xl);
}

/* ===== 图表网格布局 ===== */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

/* ===== 图表卡片样式 ===== */
.chart-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    display: flex;
    flex-direction: column;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.chart-card:nth-child(1) { animation-delay: 0.1s; }
.chart-card:nth-child(2) { animation-delay: 0.2s; }
.chart-card:nth-child(3) { animation-delay: 0.3s; }
.chart-card:nth-child(4) { animation-delay: 0.4s; }
.chart-card:nth-child(5) { animation-delay: 0.5s; }
.chart-card:nth-child(6) { animation-delay: 0.6s; }
.chart-card:nth-child(7) { animation-delay: 0.7s; }
.chart-card:nth-child(8) { animation-delay: 0.8s; }
.chart-card:nth-child(9) { animation-delay: 0.9s; }
.chart-card:nth-child(10) { animation-delay: 1.0s; }

.chart-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
}

.chart-card[data-chart-id="1"]::before { background: var(--gradient-1); }
.chart-card[data-chart-id="2"]::before { background: var(--gradient-2); }
.chart-card[data-chart-id="3"]::before { background: var(--gradient-3); }
.chart-card[data-chart-id="4"]::before { background: var(--gradient-4); }
.chart-card[data-chart-id="5"]::before { background: var(--gradient-5); }
.chart-card[data-chart-id="6"]::before { background: var(--gradient-6); }
.chart-card[data-chart-id="7"]::before { background: var(--gradient-7); }
.chart-card[data-chart-id="8"]::before { background: var(--gradient-8); }
.chart-card[data-chart-id="9"]::before { background: var(--gradient-9); }
.chart-card[data-chart-id="10"]::before { background: var(--gradient-10); }

.chart-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.chart-card.hidden {
    display: none;
}

.card-header {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chart-type-selector {
    position: relative;
}

.type-select {
    appearance: none;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 80px;
    text-align: center;
}

.type-select:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.type-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.type-select::after {
    content: '';
    position: absolute;
    top: 50%;
    right: var(--spacing-sm);
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid var(--text-secondary);
    transform: translateY(-50%);
    pointer-events: none;
}

.chart-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.chart-badge {
    background: var(--gradient-1);
    color: var(--text-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    font-size: 0.75rem;
    font-weight: 500;
}

.chart-card[data-chart-id="1"] .chart-badge { background: var(--gradient-1); }
.chart-card[data-chart-id="2"] .chart-badge { background: var(--gradient-2); }
.chart-card[data-chart-id="3"] .chart-badge { background: var(--gradient-3); }
.chart-card[data-chart-id="4"] .chart-badge { background: var(--gradient-4); }
.chart-card[data-chart-id="5"] .chart-badge { background: var(--gradient-5); }
.chart-card[data-chart-id="6"] .chart-badge { background: var(--gradient-6); }
.chart-card[data-chart-id="7"] .chart-badge { background: var(--gradient-7); }
.chart-card[data-chart-id="8"] .chart-badge { background: var(--gradient-8); }
.chart-card[data-chart-id="9"] .chart-badge { background: var(--gradient-9); }
.chart-card[data-chart-id="10"] .chart-badge { background: var(--gradient-10); }

.chart-container {
    padding: var(--spacing-lg);
    height: 350px;
    position: relative;
}

.chart-info {
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-sm);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.info-value {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 600;
}

/* ===== 页脚样式 ===== */
.footer {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.footer-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-content p:first-child {
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

/* ===== 动画定义 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .charts-grid {
        grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }
    
    .main-title {
        font-size: 2rem;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .chart-container {
        height: 300px;
    }
    
    .nav-tabs {
        gap: var(--spacing-xs);
    }
    
    .tab-btn {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: 0.75rem;
    }
    
    .chart-info {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .info-item {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .chart-container {
        height: 250px;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .header-controls {
        width: 100%;
        justify-content: space-between;
    }
    
    .type-select {
        min-width: 70px;
        font-size: 0.7rem;
        padding: var(--spacing-xs) var(--spacing-xs);
    }
}

/* ===== 加载动画 ===== */
.chart-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    color: var(--primary-color);
    font-size: 1.125rem;
}

.chart-loading::after {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary-color);
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: rotate 1s linear infinite;
    margin-left: var(--spacing-sm);
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--radius-lg);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* ===== 选择状态样式 ===== */
.chart-card.selected {
    border: 2px solid var(--primary-color);
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

/* ===== 打印样式 ===== */
@media print {
    body {
        background: white;
        color: black;
    }
    
    .header,
    .footer {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .chart-card {
        box-shadow: none;
        border: 1px solid #ccc;
        page-break-inside: avoid;
    }
    
    .nav-tabs {
        display: none;
    }
}