/* ===== ARCHIVE PAGE STYLES ===== */
.archive-page {
    background: #f8f9fa;
    min-height: 100vh;
}

/* アーカイブヘッダー */
.archive-hero {
    background: linear-gradient(135deg, #005b9f 0%, #0080d4 100%);
    color: #fff;
    padding: 3rem 0;
    margin-top: 64px;
    position: relative;
    overflow: hidden;
}

.archive-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255,255,255,0.1) 0%, transparent 50%);
}

.archive-title-section {
    position: relative;
    z-index: 1;
}

.archive-title {
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 1rem;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.archive-description {
    font-size: 1.1rem;
    text-align: center;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.archive-count {
    text-align: center;
    margin-top: 1rem;
}

.post-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    backdrop-filter: blur(10px);
}

/* アーカイブコンテンツ */
.archive-content {
    padding: 3rem 0;
}

.content-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.archive-main {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 2rem;
}

/* フィルタ */
.archive-filters {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #f0f4f8;
}

.filter-buttons {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-label {
    font-weight: 600;
    color: #333;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1px solid #ddd;
    border-radius: 20px;
    color: #666;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: #005b9f;
    color: #fff;
    border-color: #005b9f;
    transform: translateY(-1px);
}

/* 投稿グリッド */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.archive-post-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: all 0.3s ease;
    border-top: 4px solid #f36500;
}

.archive-post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.post-thumbnail {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.post-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.archive-post-card:hover .post-thumbnail img {
    transform: scale(1.05);
}

.no-thumbnail {
    height: 100%;
    background: linear-gradient(135deg, #f0f4f8 0%, #e9ecef 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.no-thumbnail i {
    font-size: 3rem;
    color: #ccc;
}

.post-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 91, 159, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.archive-post-card:hover .post-overlay {
    opacity: 1;
}

.post-overlay i {
    font-size: 2rem;
    color: #fff;
    animation: pulse 2s infinite;
}

.post-content {
    padding: 1.5rem;
}

.post-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.85rem;
    color: #666;
}

.post-meta i {
    margin-right: 0.5rem;
    color: #f36500;
}

.category-link {
    color: #005b9f;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.category-link:hover {
    color: #f36500;
}

.post-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.post-title a {
    color: #005b9f;
    text-decoration: none;
    transition: color 0.3s ease;
}

.post-title a:hover {
    color: #f36500;
}

.post-excerpt {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.post-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tag-link {
    background: #f0f4f8;
    color: #005b9f;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    text-decoration: none;
    font-size: 0.8rem;
    transition: all 0.3s ease;
}

.tag-link:hover {
    background: #005b9f;
    color: #fff;
    transform: scale(1.05);
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid #f0f4f8;
}

.read-more {
    color: #005b9f;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.read-more:hover {
    color: #f36500;
    transform: translateX(3px);
}

.comment-count {
    color: #666;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.comment-count i {
    margin-right: 0.5rem;
}

/* ページネーション */
.archive-pagination {
    text-align: center;
    margin-top: 3rem;
}

.archive-pagination .nav-links {
    display: inline-flex;
    gap: 0.5rem;
    list-style: none;
}

.archive-pagination a,
.archive-pagination span {
    display: block;
    padding: 0.75rem 1rem;
    border: 1px solid #ddd;
    color: #005b9f;
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-weight: 600;
}

.archive-pagination a:hover,
.archive-pagination .current {
    background: #005b9f;
    color: #fff;
    border-color: #005b9f;
    transform: translateY(-1px);
}

.archive-pagination .dots {
    padding: 0.75rem 0.5rem;
    color: #666;
    border: none;
}

/* 投稿なし */
.no-posts {
    text-align: center;
    padding: 4rem 2rem;
}

.no-posts-icon i {
    font-size: 4rem;
    color: #ddd;
    margin-bottom: 2rem;
}

.no-posts h2 {
    color: #005b9f;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.no-posts p {
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.no-posts-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

/* サイドバー */
.archive-sidebar {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    padding: 2rem;
    height: fit-content;
    position: sticky;
    top: 100px;
}

/* レスポンシブ */
@media (min-width: 768px) {
    .content-wrapper {
        grid-template-columns: 2fr 1fr;
    }
    
    .posts-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
    
    .archive-title {
        font-size: 3rem;
    }
}

@media (max-width: 767px) {
    .posts-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .post-meta {
        flex-direction: column;
        gap: 0.5rem;
        align-items: flex-start;
    }
    
    .no-posts-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .archive-title {
        font-size: 2rem;
    }
    
    .archive-main {
        padding: 1rem;
    }
    
    .filter-buttons {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .posts-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .archive-hero {
        padding: 2rem 0;
    }
    
    .archive-title {
        font-size: 1.8rem;
    }
    
    .post-content {
        padding: 1rem;
    }
}