/* 
 * 影视天堂 - 主样式表
 * 版本: 1.0.0
 * 更新日期: 2026-02-01
 */

/* ========== CSS变量定义 ========== */
:root {
    --primary-color: #dc3264;
    --primary-dark: #b82850;
    --secondary-color: #1a1a2e;
    --accent-color: #e94560;
    --bg-dark: #0f0f1a;
    --bg-card: #16162a;
    --bg-hover: #1f1f3a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --text-muted: #6c6c8a;
    --border-color: #2a2a4a;
    --gradient-primary: linear-gradient(135deg, #dc3264 0%, #e94560 50%, #f06080 100%);
    --gradient-dark: linear-gradient(180deg, #0f0f1a 0%, #1a1a2e 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* ========== 基础重置 ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

ul, ol {
    list-style: none;
}

/* ========== 布局容器 ========== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 60px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* ========== 头部导航 ========== */
.site-header {
    background: var(--secondary-color);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 15px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 45px;
    width: auto;
}

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

.main-nav {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.nav-list li a {
    display: block;
    padding: 10px 18px;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.nav-list li a:hover,
.nav-list li a.active {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 8px;
}

/* ========== Hero横幅区域 ========== */
.hero-section {
    position: relative;
    min-height: 500px;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 40px 0;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
}

/* ========== 视频卡片网格 ========== */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
}

.video-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

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

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

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

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(220, 50, 100, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.video-card:hover .video-play-btn {
    opacity: 1;
}

.video-play-btn::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 18px solid white;
    border-top: 12px solid transparent;
    border-bottom: 12px solid transparent;
    margin-left: 4px;
}

.video-duration {
    position: absolute;
    bottom: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 500;
}

.video-info {
    padding: 16px;
}

.video-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.video-rating {
    display: flex;
    align-items: center;
    gap: 4px;
    color: #ffc107;
}

/* ========== 视频播放器区域 ========== */
.player-section {
    background: var(--secondary-color);
    padding: 40px 0;
}

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

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

.player-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.play-button-large {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.play-button-large:hover {
    transform: scale(1.1);
    background: var(--accent-color);
}

.play-button-large::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 24px solid white;
    border-top: 16px solid transparent;
    border-bottom: 16px solid transparent;
    margin-left: 6px;
}

/* ========== 分类标签 ========== */
.tags-section {
    background: var(--bg-dark);
}

.tags-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tag-item {
    display: inline-block;
    padding: 10px 20px;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: var(--radius-lg);
    font-size: 0.95rem;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.tag-item:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    border-color: var(--primary-color);
}

/* ========== 关于我们 ========== */
.about-section {
    background: var(--secondary-color);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.about-text p {
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

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

.faq-list {
    max-width: 800px;
}

.faq-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.faq-question {
    padding: 20px 24px;
    font-size: 1.1rem;
    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(--bg-hover);
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform var(--transition-fast);
}

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

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item.active .faq-answer {
    padding: 0 24px 20px;
    max-height: 500px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========== 用户评论 ========== */
.reviews-section {
    background: var(--secondary-color);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.review-card {
    background: var(--bg-card);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.review-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
}

.review-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: white;
}

.review-author {
    flex: 1;
}

.review-name {
    font-weight: 600;
    color: var(--text-primary);
}

.review-location {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.review-rating {
    color: #ffc107;
    font-size: 1.1rem;
}

.review-content {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.review-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ========== 支付方式 ========== */
.payment-section {
    background: var(--bg-dark);
}

.payment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.payment-item {
    background: var(--bg-card);
    padding: 20px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.payment-item:hover {
    border-color: var(--primary-color);
}

.payment-item img {
    max-height: 40px;
    margin: 0 auto 10px;
}

.payment-item span {
    display: block;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========== 客服支持 ========== */
.support-section {
    background: var(--secondary-color);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 24px;
}

.support-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
}

.support-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.support-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 15px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.support-icon img {
    width: 30px;
    height: 30px;
    filter: brightness(0) invert(1);
}

.support-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.support-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--secondary-color);
    border-top: 1px solid var(--border-color);
    padding: 50px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.footer-col ul li a:hover {
    color: var(--primary-color);
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-badges {
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-badges img {
    height: 40px;
}

.age-badge {
    background: var(--accent-color);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.9rem;
}

/* ========== 面包屑导航 ========== */
.breadcrumb {
    padding: 15px 0;
    background: var(--secondary-color);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.breadcrumb-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

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

.breadcrumb-list li::after {
    content: '>';
    color: var(--text-muted);
}

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

.breadcrumb-list li:last-child {
    color: var(--text-primary);
}

/* ========== 内页样式 ========== */
.page-header {
    background: var(--gradient-dark);
    padding: 60px 0;
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.content-section {
    padding: 50px 0;
}

.content-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1.2rem;
    color: var(--text-primary);
}

.content-section h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.content-section p {
    margin-bottom: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

.content-section ul {
    margin-bottom: 1.2rem;
    padding-left: 20px;
}

.content-section ul li {
    margin-bottom: 8px;
    color: var(--text-secondary);
    position: relative;
    padding-left: 15px;
}

.content-section ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ========== APP下载页面 ========== */
.app-section {
    background: var(--gradient-dark);
    padding: 80px 0;
}

.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.app-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.app-info p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.app-features {
    margin-bottom: 2rem;
}

.app-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.app-features li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
}

.app-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.app-buttons img {
    height: 50px;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast);
}

.app-buttons img:hover {
    transform: scale(1.05);
}

.app-preview {
    text-align: center;
}

.app-preview img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ========== 标签页面 ========== */
.tags-page-section {
    padding: 50px 0;
}

.tags-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}

.tags-list .tag-link {
    display: block;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-normal);
    color: var(--text-secondary);
    font-weight: 500;
}

.tags-list .tag-link:hover {
    background: var(--primary-color);
    color: var(--text-primary);
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .app-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .app-preview {
        order: -1;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .main-nav {
        display: none;
        width: 100%;
        padding-top: 15px;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
    }
    
    .nav-list li a {
        display: block;
        padding: 12px 15px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-section {
        min-height: 400px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 16px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .page-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .tags-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========== 动画效果 ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease forwards;
}

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

.text-primary {
    color: var(--primary-color);
}

.mb-1 {
    margin-bottom: 0.5rem;
}

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

.mb-3 {
    margin-bottom: 1.5rem;
}

.mb-4 {
    margin-bottom: 2rem;
}

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

.mt-4 {
    margin-top: 2rem;
}

/* ========== 懒加载占位 ========== */
.lazy-placeholder {
    background: var(--bg-hover);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}