/* 直播投流源样式 */
.livestream-section {
    padding: 40px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin-bottom: 30px;
}

.livestream-section .section-header {
    text-align: center;
    margin-bottom: 30px;
}

.livestream-section .section-title {
    font-size: 32px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.livestream-section .section-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.livestream-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding: 0 20px;
}

.livestream-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.livestream-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.livestream-card .live-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: #ff4444;
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 5px;
}

.livestream-card .live-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #fff;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

/* 未开播标识 */
.livestream-card .offline-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: #999;
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.livestream-card .platform-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    z-index: 2;
}

.livestream-card .cover-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
}

.livestream-card .placeholder-cover {
    width: 100%;
    height: 160px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 48px;
}

.livestream-card .card-content {
    padding: 15px;
}

.livestream-card .card-title {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    margin: 0 0 8px 0;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
    min-height: 44px;
}

.livestream-card .card-description {
    font-size: 13px;
    color: #666;
    margin: 0 0 12px 0;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
    min-height: 36px;
}

.livestream-card .card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid #f0f0f0;
}

.livestream-card .view-count {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 13px;
    color: #999;
}

.livestream-card .view-count svg {
    width: 16px;
    height: 16px;
}

.livestream-card .watch-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.livestream-card .watch-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.4);
}

/* 禁用状态的观看按钮 */
.livestream-card .watch-btn.disabled {
    background: #ccc;
    cursor: not-allowed;
    opacity: 0.6;
}

.livestream-card .watch-btn.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* 未开播卡片样式 */
.livestream-card.not-live {
    opacity: 0.85;
    cursor: default;
}

.livestream-card.not-live:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.livestream-card.not-live .cover-image,
.livestream-card.not-live .placeholder-cover {
    filter: grayscale(30%);
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .livestream-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }
    
    .livestream-section {
        padding: 30px 0;
    }
    
    .livestream-section .section-title {
        font-size: 24px;
    }
    
    .livestream-section .section-subtitle {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .livestream-grid {
        grid-template-columns: 1fr;
        padding: 0 10px;
    }
    
    .livestream-card .cover-image,
    .livestream-card .placeholder-cover {
        height: 180px;
    }
}