/**
 * 博客列表页样式
 * 包含：搜索栏、分类导航、博客卡片网格、分页等样式
 */

/* 博客页面基础样式 */
.blog-page {
    font-family: 'Noto Serif SC', Georgia, serif;
    background: #FAFAFA;
}

/* 搜索栏 */
.blog-search {
    position: relative;
    max-width: 600px;
    margin: 0 auto 3rem;
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.blog-search-input-wrapper {
    position: relative;
    flex: 1;
}

.blog-search-input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3rem;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 100px;
    background: white;
    font-family: 'Noto Serif SC', serif;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.blog-search-input:focus {
    outline: none;
    border-color: #2563EB;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
}

.blog-search-icon {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9CA3AF;
    pointer-events: none;
}

.blog-search-btn {
    padding: 1rem 1.75rem;
    background: linear-gradient(135deg, #2563EB 0%, #4F46E5 100%);
    color: white;
    border: none;
    border-radius: 100px;
    font-family: 'Noto Serif SC', serif;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.blog-search-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.blog-search-clear {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9CA3AF;
    cursor: pointer;
    padding: 0.25rem;
    transition: color 0.3s ease;
    display: none;
}

.blog-search-clear:hover {
    color: #6B6B6B;
}

.blog-search-clear.visible {
    display: block;
}

@media (max-width: 640px) {
    .blog-search {
        flex-direction: column;
        gap: 0.75rem;
    }

    .blog-search-btn {
        width: 100%;
    }
}

/* 分类导航 */
.category-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    padding: 0 1rem;
}

.category-nav-item {
    padding: 0.625rem 1.25rem;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #6B6B6B;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    text-decoration: none;
}

.category-nav-item:hover {
    color: #2563EB;
    border-color: rgba(37, 99, 235, 0.3);
    transform: translateY(-2px);
}

.category-nav-item.active {
    background: linear-gradient(135deg, #2563EB 0%, #4F46E5 100%);
    color: white;
    border-color: transparent;
}

/* 博客卡片网格 */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (max-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 640px) {
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* 博客卡片 */
.blog-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
    border-color: transparent;
}

.blog-card-link {
    position: absolute;
    inset: 0;
    z-index: 1;
}

.blog-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    position: relative;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.blog-card-image-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem;
}

.blog-card-category {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.blog-card-date {
    font-size: 0.8rem;
    color: #9CA3AF;
}

.blog-card-title {
    font-family: 'Noto Serif SC', serif;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.5;
    color: #0A0A0A;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s ease;
}

.blog-card:hover .blog-card-title {
    color: #2563EB;
}

.blog-card-excerpt {
    font-size: 0.9rem;
    line-height: 1.7;
    color: #6B6B6B;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 空状态 */
.blog-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: #9CA3AF;
}

.blog-empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #E5E7EB;
}

/* 分页 */
.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 4rem;
    padding: 0 1rem;
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    height: 44px;
    padding: 0 1rem;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #6B6B6B;
    background: white;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    text-decoration: none;
}

.pagination-btn:hover {
    border-color: #2563EB;
    color: #2563EB;
}

.pagination-btn.active {
    background: #2563EB;
    color: white;
    border-color: #2563EB;
}

.pagination-ellipsis {
    color: #9CA3AF;
    padding: 0 0.5rem;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

[data-aos="fade-up"] {
    animation: fadeInUp 0.6s ease forwards;
}

/* 内容区域 */
.blog-content-section {
    padding: 4rem 0 6rem;
}