/* 视频播放器样式 */
.video-section {
    margin-bottom: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.video-section > * {
    width: 70%;
    max-width: 900px;
}

/* 视频标题艺术字 */
.video-title {
    font-size: 3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2.5rem;
    color: #000000;
    letter-spacing: 0.3rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
    animation: videoTitleFloat 3s ease-in-out infinite;
    font-family: 'Arial Black', 'Impact', sans-serif;
}

.video-title::before {
    content: '🎬 VIDEO';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(0, 0, 0, 0.1);
    filter: blur(8px);
    z-index: -1;
}

@keyframes videoTitleFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-5px);
    }
}

.video-player-container {
    background: linear-gradient(135deg, #f0f8ff 0%, #e8f4f8 100%);
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(135, 206, 235, 0.2);
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

/* 视频主区域 */
.video-main {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.video-wrapper {
    width: 100%;
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    position: relative;
    padding-top: 56.25%; /* 16:9 宽高比 */
}

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

.video-info {
    background: white;
    padding: 1.2rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.video-name {
    font-size: 1.2rem;
    color: #2c5f7c;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.video-description {
    font-size: 0.9rem;
    color: #7ba3b8;
    line-height: 1.6;
}

/* 视频列表 */
.video-playlist {
    background: white;
    border-radius: 12px;
    padding: 1.2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    height: 100%; /* 使用父容器的全部高度 */
    max-height: 400px; /* 设置最大高度 */
}

.video-playlist-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
    padding-bottom: 0.6rem;
    border-bottom: 2px solid #e8f4f8;
}

.video-playlist-header h3 {
    font-size: 1.1rem;
    color: #2c5f7c;
    margin: 0;
}

.video-count {
    font-size: 0.85rem;
    color: #7ba3b8;
}

.video-list-container {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden; /* 隐藏横向滚动条 */
    /* 不设置max-height，让它自动填充父容器剩余空间 */
}

.video-list-container::-webkit-scrollbar {
    width: 6px;
}

.video-list-container::-webkit-scrollbar-track {
    background: #f0f8ff;
    border-radius: 3px;
}

.video-list-container::-webkit-scrollbar-thumb {
    background: #98D8C8;
    border-radius: 3px;
}

.video-item {
    padding: 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 0.6rem;
    display: flex;
    gap: 0.8rem;
}

.video-item:hover {
    background: #f0f8ff;
}

.video-item.active {
    background: linear-gradient(135deg, #e8f4f8 0%, #d0e8f0 100%);
}

.video-item-thumbnail {
    width: 80px;
    height: 45px;
    border-radius: 6px;
    object-fit: cover;
    flex-shrink: 0;
    background: #e8f4f8;
}

.video-item-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.video-item-title {
    font-size: 0.9rem;
    color: #2c5f7c;
    margin-bottom: 0.2rem;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.video-item-duration {
    font-size: 0.75rem;
    color: #7ba3b8;
}

.video-item.active .video-item-title {
    color: #4a90a4;
    font-weight: 600;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .video-section > * {
        width: 85%;
    }
    
    .video-player-container {
        grid-template-columns: 1fr;
    }
    
    .video-list-container {
        max-height: 250px;
    }
}

@media (max-width: 768px) {
    .video-section > * {
        width: 95%;
    }
    
    .video-title {
        font-size: 2.5rem;
        letter-spacing: 0.2rem;
    }
    
    .video-player-container {
        padding: 1rem;
    }
    
    .video-item-thumbnail {
        width: 60px;
        height: 34px;
    }
    
    .video-item-title {
        font-size: 0.85rem;
    }
}