/* 全局样式 */
:root {
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #7209b7;
    --accent-color: #f72585;
    --success-color: #4cc9f0;
    --warning-color: #f8961e;
    --danger-color: #f94144;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --gray-light: #e9ecef;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.8rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--primary-color);
    color: white;
}

.nav-actions {
    display: flex;
    gap: 1rem;
}

/* 按钮样式 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

.btn-secondary {
    background: var(--gray-light);
    color: var(--dark-color);
}

.btn-secondary:hover {
    background: var(--gray-color);
    color: white;
}

/* Hero区域 */
.hero {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: var(--box-shadow);
}

.hero h1 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--gray-color);
    margin-bottom: 2rem;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-content h3 {
    font-size: 1rem;
    color: var(--gray-color);
    margin-bottom: 0.5rem;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.stat-desc {
    font-size: 0.9rem;
    color: var(--gray-color);
}

/* 实时数据区域 */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--gray-light);
}

.section-header h2 {
    font-size: 1.8rem;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.last-update {
    color: var(--gray-color);
    font-size: 0.9rem;
}

.realtime-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.realtime-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.realtime-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.realtime-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.realtime-header h3 {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.live-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.realtime-content {
    padding: 1.5rem;
}

.realtime-number {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    color: var(--primary-color);
    margin: 1rem 0;
}

.realtime-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--gray-light);
}

.info-label {
    color: var(--gray-color);
    font-weight: 500;
}

.info-value {
    color: var(--dark-color);
    font-weight: 600;
}

/* 趋势指示器 */
.trend-indicator {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.trend-up {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--success-color);
    font-weight: 600;
}

.trend-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--success-color);
}

.trend-chart {
    height: 150px;
    background: var(--gray-light);
    border-radius: var(--border-radius);
    margin-top: 1rem;
}

/* 预测结果 */
.prediction-result {
    text-align: center;
}

.prediction-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin: 1rem 0;
}

.prediction-confidence {
    margin: 1.5rem 0;
}

.confidence-meter {
    height: 10px;
    background: var(--gray-light);
    border-radius: 5px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.confidence-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--primary-color));
    border-radius: 5px;
    transition: width 1s ease;
}

.confidence-text {
    font-size: 0.9rem;
    color: var(--gray-color);
}

.btn-predict {
    background: linear-gradient(135deg, var(--accent-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    justify-content: center;
}

.btn-predict:hover {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow-hover);
}

/* 历史数据表格 */
.history-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--box-shadow);
}

.date-range {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.date-picker {
    padding: 0.5rem;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-family: inherit;
}

.btn-filter {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.table-container {
    overflow-x: auto;
    margin: 2rem 0;
}

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

.history-table th {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.history-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--gray-light);
}

.history-table tr:hover {
    background: var(--gray-light);
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 2rem;
}

.btn-pagination {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.btn-pagination:hover {
    background: var(--primary-dark);
}

.page-info {
    color: var(--gray-color);
}

/* 图表区域 */
.analysis-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--box-shadow);
}

.chart-controls {
    display: flex;
    gap: 1rem;
}

.chart-select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-family: inherit;
    background: white;
}

.chart-container {
    height: 400px;
    margin: 2rem 0;
    position: relative;
}

.chart-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.stat-item {
    background: var(--gray-light);
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

/* 预测分析区域 */
.prediction-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--box-shadow);
}

.prediction-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.prediction-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.prediction-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.prediction-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.accuracy-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.prediction-content {
    padding: 1.5rem;
}

.predicted-number {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--accent-color);
    margin: 1rem 0;
}

.prediction-factors {
    margin-top: 1.5rem;
}

.prediction-factors h4 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.prediction-factors ul {
    list-style: none;
}

.prediction-factors li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray-color);
}

/* 数据统计区域 */
.stats-section {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: var(--box-shadow);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.stat-card-large {
    background: var(--gray-light);
    border-radius: var(--border-radius);
    padding: 1.5rem;
}

.stat-header {
    margin-bottom: 1.5rem;
}

.stat-header h3 {
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 10px;
}

.chart-container-small {
    height: 200px;
    position: relative;
}

.stats-grid .stat-item-large {
    background: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* 页脚样式 */
.footer {
    background: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 3rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--gray-light);
    text-decoration: none;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--gray-color);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

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

    .realtime-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .prediction-grid {
        grid-template-columns: 1fr;
    }

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

/* 工具类 */
.success {
    color: var(--success-color);
}

.warning {
    color: var(--warning-color);
}

.danger {
    color: var(--danger-color);
}

.risk-low {
    color: var(--success-color);
    font-weight: 600;
}

.risk-medium {
    color: var(--warning-color);
    font-weight: 600;
}

.risk-high {
    color: var(--danger-color);
    font-weight: 600;
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--gray-light);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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