/**
 * 2025 现代玻璃态风格 - 视频播放页专用样式
 * Glassmorphism Design System v2.0
 * SEO优化 + 移动端增强 + 流畅微动画
 */

/* ========== 播放器区域 - 玻璃态容器 ========== */
.player-section {
    margin-top: var(--spacing-md);
}

.player-container {
    display: flex;
    gap: var(--spacing-md);
}

.player-main {
    flex: 1;
    min-width: 0;
}

.player-sidebar {
    width: 320px;
    flex-shrink: 0;
}

/* 视频播放器 - 玻璃态边框 */
.video-player {
    position: relative;
    padding-top: 56.25%;
    background: #000;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.video-player video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 推荐视频卡片 */
.related-section {
    margin-top: var(--spacing-lg);
}

.related-title-main {
    font-size: 22px;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
}

.related-title-main::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--spacing-md);
}

/* 播放页视频卡片 - 深色玻璃态 */
.related-grid .video-card {
    background: rgba(26, 26, 46, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
    touch-action: manipulation;
}

.related-grid .video-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(102, 126, 234, 0.3);
}

.related-grid .video-cover {
    position: relative;
    padding-top: 56.25%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
}

.related-grid .video-cover img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.related-grid .video-card:hover .video-cover img {
    transform: scale(1.05);
}

.related-grid .video-info {
    padding: var(--spacing-sm);
}

.related-grid .video-title {
    font-size: 14px;
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.4;
    min-height: 36px;
    color: var(--text-primary);
}

.related-grid .video-meta {
    font-size: 12px;
    color: var(--text-muted);
}

/* 播放前广告 - 玻璃态覆盖 */
.pre-ad {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    border-radius: var(--radius-lg);
}

.pre-ad-content {
    text-align: center;
    max-width: 90%;
}

.pre-ad-timer {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    color: white;
    font-size: 13px;
    border: 1px solid var(--glass-border);
    font-weight: 500;
}

.pre-ad-skip {
    position: absolute;
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    background: var(--primary-gradient);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    cursor: pointer;
    color: white;
    min-height: 44px;
    display: flex;
    align-items: center;
    font-weight: 500;
    transition: all var(--transition-fast);
    border: none;
    font-size: 14px;
}

.pre-ad-skip:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* 暂停广告 - 玻璃态弹窗 */
.pause-ad {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px) saturate(180%);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    display: none;
    z-index: 50;
    text-align: center;
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    max-width: 90%;
}

/* 视频信息 - 玻璃态卡片 */
.video-detail-info {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
    border: 1px solid var(--glass-border);
}

.video-detail-title {
    font-size: 24px;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 1.3;
    font-weight: 600;
}

.video-detail-meta {
    display: flex;
    gap: var(--spacing-md);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    font-size: 14px;
    flex-wrap: wrap;
}

.video-detail-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.video-detail-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 14px;
}

/* 返回按钮 - 渐变风格 */
.back-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
    font-size: 14px;
    color: white;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    font-weight: 500;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.back-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.back-btn:active {
    transform: translateY(0);
}

/* 导航下方广告位 */
.ad-header-nav {
    margin: var(--spacing-md) 0;
    text-align: center;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-sm);
    border: 1px solid var(--glass-border);
}

.ad-header-nav img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

/* ========== 侧边栏相关列表 - 与首页保持一致 ========== */
.player-sidebar .sidebar-box {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-normal);
}

.player-sidebar .sidebar-box:hover {
    border-color: rgba(102, 126, 234, 0.3);
}

.sidebar-title {
    font-size: 18px;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

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

.related-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
}

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

.related-list li:hover {
    padding-left: var(--spacing-xs);
}

.related-list a {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.related-list img {
    width: 100px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.related-list li:hover img {
    transform: scale(1.05);
}

.related-title {
    font-size: 13px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.related-list li:hover .related-title {
    color: var(--text-primary);
}

/* 移动端隐藏侧边栏 */
@media screen and (max-width: 768px) {
    .player-sidebar .sidebar-box {
        display: none;
    }
    
    .related-list a {
        flex-direction: column;
    }
    
    .related-list img {
        width: 100%;
        height: auto;
        aspect-ratio: 16/9;
    }
    
    .related-title {
        font-size: 14px;
        margin-top: var(--spacing-xs);
    }
}

/* ========== 选集 ========== */
.episode-section {
    margin-top: var(--spacing-md);
}

.episode-title {
    font-size: 18px;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.episode-list {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.episode-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.episode-btn:hover,
.episode-btn.active {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* ========== 底部 ========== */
.footer {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--glass-border);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    text-align: center;
    color: var(--text-secondary);
}

/* ========== 移动端响应式 ========== */
@media screen and (max-width: 768px) {
    .player-container {
        flex-direction: column;
    }
    
    .player-main {
        width: 100%;
    }
    
    .player-sidebar {
        width: 100%;
        margin-top: var(--spacing-md);
    }
    
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    
    .related-grid .video-card {
        border-radius: var(--radius-md);
        display: block;
    }
    
    .related-grid .video-cover {
        position: relative;
        padding-top: 56.25%;
        background: rgba(255, 255, 255, 0.05);
        border-radius: var(--radius-sm);
        min-height: 80px;
    }
    
    .related-grid .video-cover img {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .related-grid .video-info {
        padding: var(--spacing-xs);
        min-height: 50px;
    }
    
    .related-grid .video-title {
        font-size: 13px;
        line-height: 1.4;
        min-height: 36px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        white-space: normal;
    }
    
    .related-grid .video-meta {
        font-size: 11px;
    }
    
    .video-detail-info {
        padding: var(--spacing-sm);
    }
    
    .video-detail-title {
        font-size: 18px;
    }
    
    .video-detail-meta {
        font-size: 12px;
        gap: var(--spacing-sm);
    }
    
    .video-detail-desc {
        font-size: 13px;
    }
    
    .related-title-main {
        font-size: 18px;
        margin-bottom: var(--spacing-sm);
    }
    
    .back-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 13px;
    }
    
    .pre-ad-skip {
        min-height: 44px;
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 14px;
    }
    
    .episode-title {
        font-size: 16px;
    }
    
    .episode-list {
        gap: var(--spacing-xs);
    }
    
    .episode-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 13px;
    }
}

@media screen and (max-width: 480px) {
    .related-grid {
        gap: var(--spacing-xs);
    }
    
    .related-grid .video-title {
        font-size: 12px;
        line-height: 1.3;
        min-height: 32px;
    }
    
    .video-detail-title {
        font-size: 16px;
    }
    
    .video-detail-info {
        padding: var(--spacing-sm);
    }
    
    .episode-btn {
        padding: var(--spacing-xs);
        font-size: 12px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .related-grid .video-card {
        touch-action: manipulation;
    }
    
    .back-btn,
    .pre-ad-skip,
    .episode-btn {
        min-height: 44px;
    }
}

/* ========== 播放按钮覆盖层 - 玻璃态 ========== */
#play-overlay {
    transition: opacity var(--transition-fast);
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(5px);
}

#play-overlay:hover {
    background: rgba(0, 0, 0, 0.5);
}

#play-btn {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.4);
}

#play-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 12px 40px rgba(102, 126, 234, 0.6);
}

#play-btn:active {
    transform: scale(0.95);
}

/* 加载指示器 */
#loading-indicator {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* 错误提示 - 玻璃态 */
#error-indicator {
    animation: fadeIn 0.3s ease;
    background: rgba(15, 15, 26, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
}

#error-indicator button {
    background: var(--primary-gradient);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

#error-indicator button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

/* 视频播放时隐藏覆盖层 */
.video-playing #play-overlay {
    display: none !important;
}

/* ========== 视频标签 - 玻璃态 ========== */
.video-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
    margin-top: var(--spacing-sm);
}

.video-tag {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-full);
    font-size: 12px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.video-tag:hover {
    background: var(--glass-bg-hover);
    color: var(--text-primary);
    border-color: rgba(102, 126, 234, 0.3);
}