/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

: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;
}

body {
    font-family: 'Poppins', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
}

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

/* 导航栏样式 */
.navbar {
    background: linear-gradient(135deg, var(--dark-color) 0%, #16213e 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.nav-brand {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo i {
    color: var(--success-color);
    font-size: 1.8rem;
}

.tagline {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 300;
}

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

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

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--success-color);
}

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

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 按钮样式 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

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

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.btn-outline:hover {
    background: white;
    color: var(--dark-color);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* 英雄区域 */
.hero {
    padding: 4rem 0;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

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

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

.stat-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-content h3 {
    font-size: 0.9rem;
    color: var(--gray-color);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
}

.stat-trend {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.stat-trend.up {
    color: var(--success-color);
}

/* 预测显示区域 */
.prediction-display {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.prediction-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.prediction-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
}

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

.prediction-numbers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.number-card {
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    color: white;
    transition: var(--transition);
}

.number-card:hover {
    transform: scale(1.05);
}

.number-card.hot {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
}

.number-card.cold {
    background: linear-gradient(135deg, #4ecdc4 0%, #44a08d 100%);
}

.number-card.recommended {
    background: linear-gradient(135deg, #ffd166 0%, #ff9e00 100%);
}

.number-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.number-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0.5rem 0;
}

.number-probability {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* 区域通用样式 */
.section {
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.section-subtitle {
    color: var(--gray-color);
    font-size: 1.1rem;
}

/* 预测控制区域 */
.prediction-controls {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
    display: flex;
    gap: 2rem;
    align-items: flex-end;
}

.control-group {
    flex: 1;
}

.control-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    background: white;
    transition: var(--transition);
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

/* 预测结果区域 */
.prediction-results {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 2rem;
}

.result-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.result-header h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
}

.result-accuracy {
    background: linear-gradient(135deg, var(--success-color) 0%, #2a9d8f 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
}

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

.result-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.detail-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.detail-card h5 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
    margin-bottom: 1rem;
}

.number-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.number-item {
    background: var(--gray-light);
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    transition: var(--transition);
}

.number-item:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.advice-content {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.advice-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 0.95rem;
}

.advice-item.success {
    background: rgba(76, 201, 240, 0.1);
    color: #2a9d8f;
}

.advice-item.warning {
    background: rgba(248, 150, 30, 0.1);
    color: #e76f51;
}

.advice-item.info {
    background: rgba(67, 97, 238, 0.1);
    color: var(--primary-color);
}

/* 历史数据区域 */
.history-controls {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.search-box {
    position: relative;
    flex: 1;
    max-width: 400px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-color);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 2px solid var(--gray-light);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.filter-controls {
    display: flex;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 2px solid var(--gray-light);
    background: white;
    border-radius: 20px;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.history-table-container {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    margin-bottom: 2rem;
}

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

.history-table thead {
    background: linear-gradient(135deg, var(--dark-color) 0%, #16213e 100%);
    color: white;
}

.history-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.history-table tbody tr {
    border-bottom: 1px solid var(--gray-light);
    transition: var(--transition);
}

.history-table tbody tr:hover {
    background: rgba(67, 97, 238, 0.05);
}

.history-table td {
    padding: 1rem;
}

.trend-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.trend-up {
    background: rgba(76, 201, 240, 0.1);
    color: #2a9d8f;
}

.trend-down {
    background: rgba(249, 65, 68, 0.1);
    color: #e63946;
}

.trend-stable {
    background: rgba(108, 117, 125, 0.1);
    color: var(--gray-color);
}

.history-stats {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.stat-summary h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
    margin-bottom: 1.5rem;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

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

.stat-bar {
    height: 8px;
    background: var(--gray-light);
    border-radius: 4px;
    overflow: hidden;
}

.bar-fill {
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 4px;
}

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

/* 走势分析区域 */
.analysis-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.analysis-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.analysis-card.full-width {
    grid-column: 1 / -1;
}

.analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.analysis-header h4 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--dark-color);
}

.analysis-period {
    color: var(--gray-color);
    font-size: 0.9rem;
    background: var(--gray-light);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
}

.hot-cold-analysis {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.hot-section h5,
.cold-section h5 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--gray-light);
}

.hot-numbers,
.cold-numbers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.hot-number,
.cold-number {
    padding: 0.75rem;
    border-radius: 8px;
    text-align: center;
    font-weight: 600;
    transition: var(--transition);
}

.hot-number {
    background: rgba(249, 65, 68, 0.1);
    color: #e63946;
}

.hot-number:hover {
    background: #e63946;
    color: white;
    transform: translateY(-2px);
}

.cold-number {
    background: rgba(76, 201, 240, 0.1);
    color: #2a9d8f;
}

.cold-number:hover {
    background: #2a9d8f;
    color: white;
    transform: translateY(-2px);
}

/* 工具区域 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.tool-card {
    background: white;
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    transition: var(--transition);
}

.tool-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--box-shadow-hover);
}

.tool-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
}

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

.tool-card p {
    color: var(--gray-color);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
}

.tool-btn {
    width: 100%;
    justify-content: center;
}

/* 关于我们区域 */
.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    background: white;
    padding: 3rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.about-text h3 {
    color: var(--dark-color);
    margin: 1.5rem 0 1rem;
}

.about-text p {
    color: var(--gray-color);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    margin: 1.5rem 0;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    color: var(--gray-color);
}

.feature-list i {
    color: var(--success-color);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.stat-highlight {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    color: white;
}

.highlight-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

/* 页脚样式 */
.footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, #16213e 100%);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo i {
    color: var(--success-color);
}

.footer-description {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-section h4 {
    color: white;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--success-color);
    padding-left: 0.5rem;
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact i {
    color: var(--success-color);
    width: 20px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-links-bottom {
    display: flex;
    gap: 2rem;
}

.footer-links-bottom a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links-bottom a:hover {
    color: var(--success-color);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

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

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

    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .mobile-toggle {
        display: block;
    }

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

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

    .history-controls {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }

    .search-box {
        max-width: 100%;
    }

    .filter-controls {
        flex-wrap: wrap;
    }

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

    .hot-cold-analysis {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

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

    .number-list {
        grid-template-columns: repeat(2, 1fr);
    }

    .hot-numbers,
    .cold-numbers {
        grid-template-columns: repeat(2, 1fr);
    }

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