/* 体育直播导航网站主样式文件 */
/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a5fb4;
    --secondary-color: #26a269;
    --accent-color: #f66151;
    --text-color: #333333;
    --text-light: #666666;
    --text-lighter: #999999;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --bg-dark: #2c3e50;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.15);
    --radius: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

/* 头部样式 */
.site-header {
    background-color: var(--bg-dark);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--accent-color);
}

/* 主导航菜单 */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

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

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

/* 页面头部 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    list-style: none;
    gap: 0.5rem;
}

.breadcrumb li {
    display: flex;
    align-items: center;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

.breadcrumb li:not(:last-child)::after {
    content: "›";
    margin-left: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
}

.breadcrumb .current {
    color: white;
    font-weight: 500;
}

/* 热门赛事板块 */
.hot-events {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 0.5rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

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

.category-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.category-header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    text-align: center;
}

.category-header h3 {
    font-size: 1.2rem;
    margin: 0;
}

.category-content {
    padding: 1.5rem;
}

.platform-list {
    list-style: none;
}

.platform-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.platform-list li:last-child {
    border-bottom: none;
}

.platform-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.platform-link:hover {
    color: var(--primary-color);
}

.platform-logo {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.view-all {
    display: inline-block;
    margin-top: 1rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.view-all:hover {
    text-decoration: underline;
}

/* 平台推荐卡片 */
.platform-recommendations {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.platform-card {
    background: white;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.platform-image {
    height: 180px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.platform-info {
    padding: 1.5rem;
}

.platform-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.platform-desc {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.platform-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.platform-features li {
    padding: 0.25rem 0;
    color: var(--text-light);
}

.platform-features li::before {
    content: "✓";
    color: var(--secondary-color);
    margin-right: 0.5rem;
    font-weight: bold;
}

.platform-link-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.platform-link-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* 分类页面样式 */
.subcategory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.subcategory-card {
    background: white;
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.subcategory-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.subcategory-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.subcategory-card ul {
    list-style: none;
}

.subcategory-card li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.subcategory-card li:last-child {
    border-bottom: none;
}

.subcategory-card a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.subcategory-card a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* 平台详情页样式 */
.platform-detail {
    background: white;
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 3rem;
    border: 1px solid var(--border-color);
}

.platform-detail-header {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.platform-detail-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
}

.platform-detail-title h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.platform-detail-sections {
    display: grid;
    gap: 2rem;
}

.platform-section {
    padding: 1.5rem;
    background-color: var(--bg-light);
    border-radius: var(--radius);
}

.platform-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.watch-guide {
    background-color: #f0f8ff;
    border-left: 4px solid var(--primary-color);
}

/* 页脚样式 */
.site-footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

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

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

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

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

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

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

.copyright {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--bg-dark);
        transition: var(--transition);
        padding: 2rem;
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .category-grid,
    .platform-recommendations,
    .subcategory-grid {
        grid-template-columns: 1fr;
    }
    
    .platform-detail-header {
        flex-direction: column;
        text-align: center;
    }
}

/* 超小屏幕设备优化（小于480px） */
@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .page-header h1 {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .platform-title {
        font-size: 1.75rem;
    }
    
    .platform-subtitle {
        font-size: 1rem;
    }
    
    .platform-card {
        padding: 1rem;
    }
    
    .platform-link-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .platform-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .stat-item {
        padding: 0.75rem;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .stat-label {
        font-size: 0.8rem;
    }
    
    .breadcrumb {
        font-size: 0.85rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .category-grid,
    .platform-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .platform-detail-sections {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .container {
        padding: 0 1.5rem;
    }
    
    .platform-card {
        padding: 1.25rem;
    }
    
    .platform-recommendations {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .subcategory-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .platform-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 大屏幕设备优化 */
@media (min-width: 1025px) and (max-width: 1440px) {
    .container {
        max-width: 1200px;
        padding: 0 2rem;
    }
    
    .platform-detail-sections {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .platform-stats {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .platform-recommendations {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 超宽屏幕优化 */
@media (min-width: 1441px) {
    .container {
        max-width: 1400px;
        padding: 0 2.5rem;
    }
    
    .platform-detail-sections {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .platform-stats {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* 平台标签 */
.platform-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.tag:nth-child(2) {
    background-color: var(--secondary-color);
}

.tag:nth-child(3) {
    background-color: var(--accent-color);
}

/* 平台搜索输入 */
.platform-search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
    transition: var(--transition);
}

.platform-search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(26, 95, 180, 0.1);
}

/* 筛选按钮 */
.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

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

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

/* 对比表格 */
.comparison-table {
    overflow-x: auto;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.comparison-table th,
.comparison-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background-color: var(--bg-light);
    font-weight: 600;
    color: var(--primary-color);
}

.comparison-table tr:hover {
    background-color: var(--bg-light);
}

/* 评分摘要 */
.rating-summary {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.rating-summary p {
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
}

.rating-summary strong {
    color: var(--primary-color);
}

/* 工具类 */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.bg-light {
    background-color: var(--bg-light);
}

.hidden {
    display: none !important;
}

/* SEO优化样式 */
.seo-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.seo-keywords span {
    background-color: var(--bg-light);
    color: var(--text-light);
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
}

/* 页面加载器 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 无障碍优化 */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .platform-link-btn,
    .mobile-menu-btn,
    #scroll-to-top {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    a {
        color: black !important;
        text-decoration: underline;
    }
    
    .platform-card,
    .category-card,
    .subcategory-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}