/* 健康活动与讲座页面样式 */
.activities-hero {
    background: linear-gradient(rgb(236 132 132 / 50%), rgb(180 145 145 / 50%));
    background-size: cover;
    background-position: center;
    color: white;
    padding: 80px 0;
    text-align: center;
}

.activities-categories {
    padding: 60px 0;
}

.categories-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 40px;
}

.activities-container {
    margin-top: 30px;
}

.activities-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px 0;
}

.activity-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
    height: 200px;
}

.activity-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.activity-card:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.activity-image {
    height: 200px;
    overflow: hidden;
}

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

.activity-content {
    position: relative;
    padding-right: 80px;
}
.activity-status {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    color: white;
    z-index: 1;
}
.activity-status.upcoming {
    background: var(--info-color);
    color: white;
}

.activity-status.ongoing {
    background: var(--success-color);
    color: white;
}

.activity-status.ended {
    background: var(--text-secondary);
    color: white;
}
.activity-card:hover .activity-image img {
    transform: scale(1.05);
}

.activity-content {
    padding: 20px;
}

.activity-title {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.activity-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 15px;
    color: #7f8c8d;
    font-size: 0.9rem;
}

.activity-meta-item {
    display: flex;
    align-items: center;
}

.activity-meta-item i {
    margin-right: 5px;
    color: #4CAF50;
}

.activity-description {
    color: #34495e;
    margin-bottom: 15px;
    line-height: 1.6;
}

.activity-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.activity-category {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
}

.activity-category.lecture {
    background: #e3f2fd;
    color: #4CAF50;
}

.activity-category.training {
    background: #e8f5e9;
    color: #388e3c;
}

.activity-category.event {
    background: #f3e5f5;
    color: #8e24aa;
}

.activity-category.workshop {
    background: #fff3e0;
    color: #e65100;
}

.btn-register {
    padding: 8px 16px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.btn-register:hover {
    background: #4CAF50;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .activity-card {
        grid-template-columns: 1fr;
        height: auto;
    }
    
    .categories-header {
        align-items: flex-start;
    }
    
    .category-filters {
        justify-content: flex-start;
    }
}