/* 
 * 美影视频网站主样式表
 * 移动端优先设计 - 2026年SEO优化版
 */

/* CSS变量定义 */
:root {
    --primary-color: #8B008B;
    --secondary-color: #DC143C;
    --accent-color: #FF6B35;
    --dark-bg: #1a1a2e;
    --darker-bg: #16213e;
    --card-bg: #0f3460;
    --text-primary: #ffffff;
    --text-secondary: #b8b8d1;
    --text-muted: #8892b0;
    --border-color: #2d3a5f;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --gradient-primary: linear-gradient(135deg, #8B008B 0%, #DC143C 100%);
    --gradient-secondary: linear-gradient(135deg, #1a1a2e 0%, #16213e 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: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* 重置样式 */
*, *::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(--dark-bg);
    color: var(--text-primary);
    line-height: 1.8;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 图片响应式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

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

/* 容器 */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

@media (min-width: 768px) {
    .container {
        padding: 0 24px;
    }
}

@media (min-width: 1200px) {
    .container {
        padding: 0 32px;
    }
}

/* 头部导航 */
.site-header {
    background: var(--darker-bg);
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.site-logo img {
    height: 48px;
    width: auto;
}

.site-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;
}

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

@media (min-width: 992px) {
    .main-nav {
        display: flex;
        gap: 32px;
    }
}

.main-nav a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--text-primary);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

@media (min-width: 992px) {
    .mobile-menu-btn {
        display: none;
    }
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition-fast);
}

/* 移动端导航菜单 */
.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    padding: 80px 24px 24px;
    overflow-y: auto;
}

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

.mobile-nav-close {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 32px;
    color: var(--text-primary);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-nav a {
    display: block;
    padding: 16px 0;
    font-size: 1.25rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

/* CTA按钮 */
.btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    text-decoration: none;
}

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

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

/* Hero区域 */
.hero-section {
    position: relative;
    padding: 60px 0 80px;
    background: var(--gradient-secondary);
    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: 0.15;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.3;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 16px 0;
    background: var(--darker-bg);
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    font-size: 0.875rem;
}

.breadcrumb-list li::after {
    content: '/';
    margin-left: 8px;
    color: var(--text-muted);
}

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

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

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

/* 内容区块 */
.section {
    padding: 60px 0;
}

.section-alt {
    background: var(--darker-bg);
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 16px;
    text-align: center;
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }
}

.section-subtitle {
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 40px;
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 768px) {
    .video-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
}

@media (min-width: 1200px) {
    .video-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

.video-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

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

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

.video-card:hover .video-card-thumb img {
    transform: scale(1.08);
}

.video-card-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(139, 0, 139, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

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

.video-card-play::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-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.8);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
}

.video-card-body {
    padding: 16px;
}

.video-card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.video-card-rating {
    color: var(--warning-color);
}

/* 视频播放器区域 */
.video-player-section {
    background: #000;
    padding: 24px 0;
}

.video-player-wrapper {
    position: relative;
    aspect-ratio: 16/9;
    max-width: 1000px;
    margin: 0 auto;
    background: var(--darker-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.video-player-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
}

.video-player-placeholder .play-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.video-player-placeholder .play-icon:hover {
    transform: scale(1.1);
}

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

/* 标签云 */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.tag-item {
    display: inline-block;
    padding: 8px 20px;
    background: var(--card-bg);
    color: var(--text-secondary);
    border-radius: 50px;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

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

/* 用户评论 */
.review-grid {
    display: grid;
    gap: 24px;
}

@media (min-width: 768px) {
    .review-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1200px) {
    .review-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.review-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.review-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
}

.review-author-info h4 {
    font-size: 1rem;
    margin-bottom: 4px;
}

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

.review-rating {
    color: var(--warning-color);
    font-size: 1.125rem;
    margin-bottom: 12px;
}

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

.review-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* FAQ手风琴 */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

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

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: rgba(139, 0, 139, 0.1);
}

.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 {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 24px 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 支付方式 */
.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    align-items: center;
}

.payment-icon {
    height: 40px;
    width: auto;
    filter: grayscale(0.3);
    transition: filter var(--transition-fast);
}

.payment-icon:hover {
    filter: grayscale(0);
}

/* 关于我们 */
.about-content {
    display: grid;
    gap: 40px;
}

@media (min-width: 992px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
}

.about-text h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--accent-color);
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.9;
}

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

/* 客服支持 */
.support-grid {
    display: grid;
    gap: 24px;
}

@media (min-width: 768px) {
    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .support-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.support-card {
    background: var(--card-bg);
    padding: 32px 24px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-fast);
}

.support-card:hover {
    border-color: var(--primary-color);
}

.support-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.support-card h4 {
    font-size: 1.125rem;
    margin-bottom: 8px;
}

.support-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* 页脚 */
.site-footer {
    background: var(--darker-bg);
    padding: 60px 0 24px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    gap: 40px;
    margin-bottom: 40px;
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

.footer-brand {
    max-width: 300px;
}

.footer-brand img {
    height: 48px;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.8;
}

.footer-column h4 {
    font-size: 1.125rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

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

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

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

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 20px;
}

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

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

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

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

.footer-badges {
    display: flex;
    gap: 16px;
    align-items: center;
}

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

.age-restriction {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary-color);
    font-weight: 600;
}

/* APP下载页面 */
.app-download-hero {
    padding: 80px 0;
    text-align: center;
    background: var(--gradient-secondary);
}

.app-features {
    display: grid;
    gap: 24px;
    margin-top: 40px;
}

@media (min-width: 768px) {
    .app-features {
        grid-template-columns: repeat(3, 1fr);
    }
}

.app-feature-card {
    background: var(--card-bg);
    padding: 32px;
    border-radius: var(--radius-md);
    text-align: center;
}

.app-feature-card h4 {
    font-size: 1.25rem;
    margin: 16px 0 12px;
}

.app-feature-card p {
    color: var(--text-secondary);
}

.download-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    margin-top: 32px;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--card-bg);
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    transition: all var(--transition-fast);
}

.download-btn:hover {
    border-color: var(--primary-color);
    background: rgba(139, 0, 139, 0.1);
}

.download-btn-text {
    text-align: left;
}

.download-btn-text small {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.download-btn-text span {
    font-size: 1.125rem;
    font-weight: 600;
}

/* 内容详情页 */
.content-detail {
    padding: 40px 0;
}

.content-header {
    margin-bottom: 32px;
}

.content-title {
    font-size: 1.75rem;
    margin-bottom: 16px;
}

@media (min-width: 768px) {
    .content-title {
        font-size: 2.5rem;
    }
}

.content-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.content-body {
    max-width: 800px;
}

.content-body h2 {
    font-size: 1.5rem;
    margin: 32px 0 16px;
    color: var(--accent-color);
}

.content-body h3 {
    font-size: 1.25rem;
    margin: 24px 0 12px;
}

.content-body p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.9;
}

.content-body ul, .content-body ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.content-body li {
    margin-bottom: 8px;
    line-height: 1.8;
}

.content-body img {
    border-radius: var(--radius-md);
    margin: 24px 0;
}

/* 标签页面 */
.tags-page {
    padding: 60px 0;
}

.tags-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (min-width: 768px) {
    .tags-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1200px) {
    .tags-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

.tag-card {
    background: var(--card-bg);
    padding: 24px;
    border-radius: var(--radius-md);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.tag-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
}

.tag-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

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

/* 负责任观影提示 */
.responsible-viewing {
    background: linear-gradient(135deg, #2d1f3d 0%, #1a1a2e 100%);
    padding: 40px;
    border-radius: var(--radius-lg);
    margin: 40px 0;
}

.responsible-viewing h3 {
    color: var(--warning-color);
    margin-bottom: 16px;
}

.responsible-viewing p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.responsible-viewing ul {
    list-style: none;
    margin-top: 16px;
}

.responsible-viewing li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
}

.responsible-viewing li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-color);
}

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

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mt-4 {
    margin-top: 24px;
}

.mb-4 {
    margin-bottom: 24px;
}

.hidden {
    display: none;
}

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

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

/* 懒加载图片占位 */
.lazy-image {
    background: var(--card-bg);
    min-height: 180px;
}

/* 视觉稳定性 - 防止布局偏移 */
.video-card-thumb {
    background: var(--card-bg);
}

img[loading="lazy"] {
    background: var(--card-bg);
}