/* ========================================
   ブログ用CSS
======================================== */

/* ブログヘッダー */
.blog-header {
    background: linear-gradient(135deg, #EDE9FE 0%, #F3E8FF 100%);
    padding: 40px 20px 60px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #8B5CF6;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 30px;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: #7C3AED;
}

.back-link i {
    font-size: 12px;
}

.blog-main-title {
    font-size: 42px;
    font-weight: 900;
    color: #4C1D95;
    margin-bottom: 15px;
    text-align: center;
}

.blog-main-subtitle {
    font-size: 16px;
    color: #666;
    text-align: center;
    line-height: 1.8;
}

/* ブログ一覧セクション */
.blog-list-section {
    padding: 80px 20px;
    background: #ffffff;
}

.blog-articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1200px;
    margin: 0 auto;
}

/* ブログカード */
.blog-article-card {
    background: #ffffff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

.blog-article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(139, 92, 246, 0.25);
}

.blog-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.blog-card-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
}

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

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

.blog-card-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #8B5CF6;
    color: #ffffff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
}

.blog-card-content {
    padding: 25px;
}

.blog-card-date {
    display: block;
    font-size: 13px;
    color: #999;
    margin-bottom: 12px;
}

.blog-card-title {
    font-size: 20px;
    font-weight: 700;
    color: #4C1D95;
    margin-bottom: 15px;
    line-height: 1.5;
}

.blog-card-description {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 20px;
}

.blog-card-readmore {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #8B5CF6;
    font-size: 14px;
    font-weight: 600;
    transition: gap 0.3s ease;
}

.blog-article-card:hover .blog-card-readmore {
    gap: 12px;
}

.blog-card-readmore i {
    font-size: 12px;
}

/* ブログ詳細ページ */
.blog-detail-section {
    padding: 60px 20px 80px;
    background: #ffffff;
}

.blog-detail-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.blog-detail-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.blog-detail-category {
    background: #8B5CF6;
    color: #ffffff;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
}

.blog-detail-date {
    font-size: 14px;
    color: #999;
}

.blog-detail-title {
    font-size: 36px;
    font-weight: 900;
    color: #4C1D95;
    line-height: 1.5;
    margin-bottom: 25px;
}

.blog-detail-description {
    font-size: 18px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 40px;
}

.blog-detail-image {
    width: 100%;
    height: 450px;
    overflow: hidden;
    border-radius: 16px;
    margin-bottom: 50px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.blog-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-detail-content {
    font-size: 16px;
    line-height: 2;
    color: #333;
}

.blog-detail-content h2 {
    font-size: 28px;
    font-weight: 700;
    color: #4C1D95;
    margin: 50px 0 25px;
    padding-bottom: 15px;
    border-bottom: 3px solid #8B5CF6;
}

.blog-detail-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: #4C1D95;
    margin: 40px 0 20px;
}

.blog-detail-content p {
    margin-bottom: 30px;
}

.blog-detail-content ul {
    margin: 25px 0 30px 25px;
    padding-left: 0;
}

.blog-detail-content li {
    margin-bottom: 12px;
    line-height: 1.8;
    position: relative;
    padding-left: 20px;
}

.blog-detail-content li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #8B5CF6;
    font-weight: bold;
}

.blog-detail-content .note {
    background: linear-gradient(135deg, #EDE9FE 0%, #F3E8FF 100%);
    padding: 20px 25px;
    border-radius: 8px;
    border-left: 4px solid #8B5CF6;
    font-size: 14px;
    color: #666;
    margin-top: 50px;
}

.blog-detail-footer {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid #e0e0e0;
    text-align: center;
}

.btn-back-to-list {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #8B5CF6;
    color: #ffffff;
    padding: 15px 40px;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-back-to-list:hover {
    background: #7C3AED;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.5);
}

/* 記事が見つからない場合 */
.article-not-found {
    text-align: center;
    padding: 80px 20px;
}

.article-not-found p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

/* 関連記事セクション */
.related-articles-section {
    padding: 80px 20px;
    background: linear-gradient(180deg, #F5F3FF 0%, #ffffff 100%);
}

.related-articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 50px auto 0;
}

.blog-article-card.small .blog-card-image {
    height: 180px;
}

.blog-article-card.small .blog-card-content {
    padding: 20px;
}

.blog-article-card.small .blog-card-title {
    font-size: 18px;
}

/* ========================================
   レスポンシブデザイン
======================================== */

/* タブレット */
@media (max-width: 1024px) {
    .blog-articles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .related-articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* スマホ */
@media (max-width: 768px) {
    .blog-header {
        padding: 30px 20px 40px;
    }
    
    .blog-main-title {
        font-size: 32px;
    }
    
    .blog-main-subtitle {
        font-size: 14px;
    }
    
    .blog-list-section {
        padding: 60px 20px;
    }
    
    .blog-articles-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .blog-card-image {
        height: 200px;
    }
    
    .blog-card-title {
        font-size: 18px;
    }
    
    .blog-detail-section {
        padding: 40px 20px 60px;
    }
    
    .blog-detail-title {
        font-size: 26px;
        margin-bottom: 20px;
    }
    
    .blog-detail-description {
        font-size: 15px;
        margin-bottom: 30px;
    }
    
    .blog-detail-image {
        height: 250px;
        margin-bottom: 35px;
    }
    
    .blog-detail-content {
        font-size: 15px;
    }
    
    .blog-detail-content h2 {
        font-size: 24px;
        margin: 40px 0 20px;
    }
    
    .blog-detail-content h3 {
        font-size: 20px;
        margin: 30px 0 15px;
    }
    
    .related-articles-section {
        padding: 60px 20px;
    }
    
    .related-articles-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .btn-back-to-list {
        padding: 12px 30px;
        font-size: 14px;
    }
}