/* 筛选区域样式 */
.filter-section {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.filter-group {
    margin-bottom: 15px;
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-group h3 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.filter-btn {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 20px;
    background-color: #fff;
    color: #666;
    cursor: pointer;
    transition: all 0.3s;
}

.filter-btn:hover {
    border-color: #c41230;
    color: #c41230;
}

.filter-btn.active {
    background-color: #c41230;
    border-color: #c41230;
    color: #fff;
}

/* 瀑布流布局 */
.masonry-grid {
    column-count: 4;
    column-gap: 20px;
    padding: 0 15px;
}

.grid-item {
    break-inside: avoid;
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s, transform 0.5s;
}

.grid-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.item-image {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.item-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s;
}

.item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    padding: 20px;
    color: #fff;
    transform: translateY(100%);
    transition: transform 0.3s;
}

.item-image:hover img {
    transform: scale(1.05);
}

.item-image:hover .item-overlay {
    transform: translateY(0);
}

.item-overlay h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.item-overlay p {
    font-size: 14px;
    line-height: 1.4;
    opacity: 0.9;
}

/* 加载更多按钮 */
.load-more {
    text-align: center;
    margin: 30px 0;
}

#loadMoreBtn {
    padding: 12px 30px;
    background-color: #c41230;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s;
}

#loadMoreBtn:hover {
    background-color: #a00f28;
}

/* 响应式设计 */
@media screen and (max-width: 1200px) {
    .masonry-grid {
        column-count: 3;
    }
}

@media screen and (max-width: 992px) {
    .masonry-grid {
        column-count: 2;
    }
}

@media screen and (max-width: 768px) {
    .filter-section {
        padding: 15px;
    }

    .filter-options {
        overflow-x: auto;
        white-space: nowrap;
        padding-bottom: 10px;
        -webkit-overflow-scrolling: touch;
    }

    .filter-btn {
        flex-shrink: 0;
    }

    .masonry-grid {
        column-count: 1;
        padding: 0 10px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.grid-item.animate {
    animation: fadeInUp 0.5s ease forwards;
}

/* 图片预览效果 */
.preview-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.preview-overlay.active {
    opacity: 1;
    visibility: visible;
}

.preview-content {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
}

.preview-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.preview-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: #fff;
    font-size: 30px;
    cursor: pointer;
}

.preview-title {
    position: absolute;
    bottom: -40px;
    left: 0;
    right: 0;
    color: #fff;
    text-align: center;
    font-size: 18px;
}

/* 文章列表布局 */
.article-list {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.article-item {
    display: flex;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    overflow: hidden;
    transition: transform 0.3s;
}

.article-item:hover {
    transform: translateY(-5px);
}

.article-image {
    flex: 0 0 300px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.article-item:hover .article-image img {
    transform: scale(1.05);
}

.article-content {
    flex: 1;
    padding: 20px;
}

.article-title {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
}

.article-meta {
    display: flex;
    align-items: center;
    color: #666;
    font-size: 14px;
    margin-bottom: 10px;
}

.article-meta span {
    margin-right: 15px;
}

.article-meta i {
    margin-right: 5px;
}

.article-summary {
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.article-tag {
    padding: 4px 12px;
    background-color: #f5f5f5;
    border-radius: 15px;
    color: #666;
    font-size: 12px;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .article-item {
        flex-direction: column;
    }
    
    .article-image {
        flex: 0 0 200px;
    }
    
    .article-content {
        padding: 15px;
    }
    
    .article-title {
        font-size: 18px;
    }
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 30px 0;
    gap: 10px;
}

.page-btn {
    min-width: 40px;
    height: 40px;
    border: 1px solid #ddd;
    background-color: #fff;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.page-btn:hover:not(:disabled) {
    border-color: #c41230;
    color: #c41230;
}

.page-btn.active {
    background-color: #c41230;
    border-color: #c41230;
    color: #fff;
}

.page-btn:disabled {
    background-color: #f5f5f5;
    border-color: #ddd;
    color: #999;
    cursor: not-allowed;
}

.page-dots {
    color: #666;
    font-size: 14px;
}

.prev i,
.next i {
    font-size: 12px;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .pagination {
        gap: 5px;
    }

    .page-btn {
        min-width: 35px;
        height: 35px;
        font-size: 13px;
    }
}