/* 
 * 影视娱乐网站主样式表
 * 2026年SEO优化版本
 * 移动优先响应式设计
 */

/* CSS变量定义 */
:root {
    --primary-color: #6B21A8;
    --secondary-color: #1E40AF;
    --accent-color: #F59E0B;
    --dark-bg: #0F172A;
    --light-bg: #F8FAFC;
    --text-primary: #1E293B;
    --text-secondary: #64748B;
    --text-light: #F1F5F9;
    --gradient-primary: linear-gradient(135deg, #6B21A8 0%, #1E40AF 100%);
    --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
    --shadow-sm: 0 1px 2px 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);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

/* 重置样式 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--light-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 图片优化 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 链接样式 */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--secondary-color);
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 头部导航 */
.site-header {
    background: var(--dark-bg);
    padding: 1rem 0;
    position: relative;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo img {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-light);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: block;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-light);
    margin: 5px 0;
    transition: var(--transition-fast);
}

/* 主导航 */
.main-nav {
    width: 100%;
    display: none;
}

.main-nav.active {
    display: block;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-list a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-light);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

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

/* CTA按钮 */
.btn-cta {
    display: inline-block;
    padding: 0.875rem 1.5rem;
    background: var(--gradient-accent);
    color: white !important;
    font-weight: 600;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

/* 英雄区域 */
.hero-section {
    background: var(--gradient-primary);
    padding: 3rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-banner.webp') center/cover no-repeat;
    opacity: 0.2;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-light);
}

.hero-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 1rem 0;
    background: var(--light-bg);
    border-bottom: 1px solid #E2E8F0;
}

.breadcrumb-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.breadcrumb-list li::after {
    content: '/';
    margin-left: 0.5rem;
    color: var(--text-secondary);
}

.breadcrumb-list li:last-child::after {
    display: none;
}

.breadcrumb-list a {
    color: var(--text-secondary);
}

.breadcrumb-list a:hover {
    color: var(--primary-color);
}

/* 内容区块 */
.section {
    padding: 3rem 0;
}

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

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.video-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.video-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.video-card-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

.video-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.video-card:hover .video-card-image img {
    transform: scale(1.05);
}

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background: rgba(0,0,0,0.7);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.play-overlay::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 16px solid white;
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    margin-left: 4px;
}

.video-card-content {
    padding: 1rem;
}

.video-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.rating {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.rating-star {
    color: var(--accent-color);
}

/* 视频播放器区域 */
.video-player-section {
    background: var(--dark-bg);
    padding: 2rem 0;
}

.video-player-wrapper {
    position: relative;
    aspect-ratio: 16/9;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.video-player-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 特色区块 */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.feature-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    width: 32px;
    height: 32px;
    filter: brightness(0) invert(1);
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 用户评论 */
.reviews-section {
    background: linear-gradient(180deg, var(--light-bg) 0%, white 100%);
}

.review-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 1rem;
}

.review-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.review-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 1.25rem;
}

.review-info h4 {
    font-size: 1rem;
    font-weight: 600;
}

.review-info span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.review-rating {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 0.75rem;
}

.star-filled {
    color: var(--accent-color);
}

.star-empty {
    color: #CBD5E1;
}

.review-content {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.review-date {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-top: 0.75rem;
}

/* FAQ区域 */
.faq-section {
    background: var(--light-bg);
}

.faq-item {
    background: white;
    border-radius: var(--radius-md);
    margin-bottom: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    width: 100%;
    padding: 1rem 1.25rem;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--light-bg);
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--primary-color);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.25rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.faq-item.active .faq-answer {
    padding: 0 1.25rem 1.25rem;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 支付方式 */
.payment-section {
    text-align: center;
}

.payment-icons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.payment-icons img {
    height: 40px;
    width: auto;
    border-radius: var(--radius-sm);
}

/* 标签云 */
.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
}

.tag-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid #E2E8F0;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.tag-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 页脚 */
.site-footer {
    background: var(--dark-bg);
    color: var(--text-light);
    padding: 3rem 0 1.5rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: white;
}

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

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

.footer-section a {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--accent-color);
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 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: var(--text-light);
    transition: background var(--transition-fast);
}

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

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

.age-restriction {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #DC2626;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* APP下载页面 */
.app-hero {
    background: var(--gradient-primary);
    padding: 4rem 0;
    text-align: center;
    color: white;
}

.app-preview {
    max-width: 300px;
    margin: 2rem auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    margin-top: 2rem;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: rgba(255,255,255,0.1);
    border: 2px solid white;
    border-radius: var(--radius-lg);
    color: white;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.download-btn:hover {
    background: white;
    color: var(--primary-color);
}

/* 内容页面 */
.content-page {
    padding: 2rem 0;
}

.content-header {
    margin-bottom: 2rem;
}

.content-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.content-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.content-body {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.content-body h2 {
    font-size: 1.375rem;
    font-weight: 600;
    margin: 1.5rem 0 1rem;
    color: var(--primary-color);
}

.content-body h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 1.25rem 0 0.75rem;
}

.content-body p {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content-body ul, .content-body ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.content-body li {
    margin-bottom: 0.5rem;
}

.content-image {
    margin: 1.5rem 0;
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* 作者信息 */
.author-box {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--light-bg);
    border-radius: var(--radius-lg);
    margin: 2rem 0;
}

.author-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    flex-shrink: 0;
}

.author-info h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

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

/* 相关内容 */
.related-section {
    margin-top: 3rem;
}

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

/* 标签页面 */
.tags-page {
    padding: 2rem 0;
}

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

.tag-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-fast);
}

.tag-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.tag-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.tag-card span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 响应式设计 - 平板 */
@media (min-width: 640px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tags-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .download-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

/* 响应式设计 - 桌面 */
@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }
    
    .main-nav {
        display: block;
        width: auto;
    }
    
    .nav-list {
        flex-direction: row;
        gap: 0.25rem;
    }
    
    .hero-section {
        padding: 5rem 0;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .section {
        padding: 4rem 0;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .tags-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .related-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .btn-cta {
        display: none;
    }
}

/* 无障碍 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --text-secondary: #475569;
    }
}