/* 容器 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 文本阴影 */
.text-shadow {
    text-shadow: 0 2px 4px rgba(0,0,0,1);
}

.text-shadow-lg {
    text-shadow: -1px -1px 8px #333333, 1px -1px 8px #333333, -1px 1px 8px #333333, 1px 1px 8px #333333;
    /*text-shadow: 0 4px 4px #000000;*/
}

/* 卡片覆盖层 */
.card-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 60%);
}

.transition-transform {
    transition: transform 0.3s ease;
}

/* 活动卡片样式 */
.activity-card {
    position: relative;
    overflow: hidden;
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

    .activity-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    }

    .activity-card img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .activity-card:hover img {
        transform: scale(1.05);
    }

.activity-title {
    position: absolute;
    bottom: 0;
    /*left: 0;*/
    right: 0;
    padding: 1rem;
    color: white;
    font-weight: 600;
    z-index: 10;
    font-size: 18px;
}

/* 瀑布流布局 */
.masonry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    grid-gap: 1.5rem;
    grid-auto-flow: dense;
}

@media (max-width: 640px) {
    .masonry-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        grid-gap: 1rem;
    }
}

/* 活动卡片样式调整 */
.activity-card {
    position: relative;
    overflow: hidden;
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

    .activity-card > div {
        position: relative;
        width: 100%;
        height: 100%;
    }