/* 全局样式 */
body {
    scroll-behavior: smooth;
}

/* 导航栏滚动效果 */
#navbar {
    background-color: transparent;
}

#navbar.scrolled {
    background-color: rgba(41, 47, 54, 0.95);
    backdrop-blur: 8px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

/* 视频卡片悬停效果 */
.video-card {
    transition: all 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

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

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

/* 分类标签样式 */
.category-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 16px;
    font-size: 12px;
    margin-right: 8px;
    margin-bottom: 8px;
    transition: all 0.3s ease;
}

.category-tag:hover {
    transform: translateY(-2px);
}

/* 加载动画 */
.loader {
    border: 3px solid rgba(255, 107, 107, 0.3);
    border-radius: 50%;
    border-top: 3px solid #FF6B6B;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 响应式布局调整 */
@media (max-width: 768px) {
    .grid-cols-3, .grid-cols-4, .grid-cols-6 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .grid-cols-2, .grid-cols-3, .grid-cols-4, .grid-cols-6 {
        grid-template-columns: 1fr;
    }
}