/* ==========================================================================
   LIVE配信研究所 - スポンサー事務所詳細ページ専用CSS
   ========================================================================== */

/* ==========================================================================
   スポンサー詳細ヘッダーセクション
   ========================================================================== */

.sponsor-detail-header {
    padding: 4rem 0 3rem;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1) 0%, rgba(78, 205, 196, 0.1) 100%);
    margin-top: 2rem;
}

.sponsor-detail-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: start;
}

/* スポンサーロゴ */
.sponsor-detail-logo {
    background: #FFFFFF;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sponsor-detail-logo img {
    width: 100%;
    height: auto;
    max-width: 250px;
    object-fit: contain;
}

/* スポンサー情報 */
.sponsor-detail-info {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sponsor-detail-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: #2C3E50;
    margin: 0;
    line-height: 1.2;
}

.sponsor-detail-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #6C757D;
    background: #FFFFFF;
    padding: 1.5rem;
    border-radius: 15px;
    border-left: 4px solid #FF6B6B;
}

/* メタ情報 */
.sponsor-detail-meta {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: #2C3E50;
    background: #FFFFFF;
    padding: 0.8rem 1.5rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.meta-icon {
    font-size: 1.2rem;
}

/* アクションボタン */
.sponsor-detail-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.sponsor-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.sponsor-btn-primary {
    background: linear-gradient(135deg, #FF6B6B 0%, #FF8E53 100%);
    color: #FFFFFF;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.sponsor-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
}

.sponsor-btn-social {
    background: #FFFFFF;
    color: #2C3E50;
    border: 2px solid #E0E0E0;
}

.sponsor-btn-social:hover {
    background: #F8F9FA;
    border-color: #4ECDC4;
    transform: translateY(-2px);
}

/* ==========================================================================
   関連記事セクション
   ========================================================================== */

.sponsor-related-articles {
    padding: 4rem 0;
    background: #FFFFFF;
}

.sponsor-related-articles .section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: #2C3E50;
    margin-bottom: 3rem;
}

/* 記事グリッド */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}

/* 記事が見つからない場合 */
.no-posts {
    text-align: center;
    padding: 4rem 2rem;
    color: #6C757D;
    font-size: 1.1rem;
}

/* ==========================================================================
   一般タグアーカイブページ
   ========================================================================== */

.general-tag-header {
    padding: 4rem 0 2rem;
    background: linear-gradient(135deg, rgba(255, 230, 109, 0.1) 0%, rgba(78, 205, 196, 0.1) 100%);
    text-align: center;
    margin-top: 2rem;
}

.general-tag-header .section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2C3E50;
    margin-bottom: 1rem;
}

.tag-description {
    font-size: 1.1rem;
    color: #6C757D;
    max-width: 800px;
    margin: 0 auto;
}

.general-tag-articles {
    padding: 4rem 0;
}

/* ==========================================================================
   ページネーション
   ========================================================================== */

.pagination {
    display: flex;
    justify-content: center;
    margin-top: 3rem;
}

.pagination ul {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 0.5rem;
}

.pagination li {
    margin: 0;
}

.pagination a,
.pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0.5rem 1rem;
    background: #FFFFFF;
    border: 2px solid #E0E0E0;
    border-radius: 8px;
    color: #2C3E50;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pagination a:hover {
    background: #FF6B6B;
    color: #FFFFFF;
    border-color: #FF6B6B;
    transform: translateY(-2px);
}

.pagination .current {
    background: linear-gradient(135deg, #FF6B6B 0%, #4ECDC4 100%);
    color: #FFFFFF;
    border-color: transparent;
}

/* ==========================================================================
   レスポンシブデザイン - タブレット
   ========================================================================== */

@media (max-width: 1024px) {
    .sponsor-detail-content {
        grid-template-columns: 250px 1fr;
        gap: 2rem;
    }
    
    .sponsor-detail-logo {
        padding: 1.5rem;
    }
    
    .sponsor-detail-title {
        font-size: 2rem;
    }
    
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   レスポンシブデザイン - スマートフォン
   ========================================================================== */

@media (max-width: 768px) {
    .sponsor-detail-header {
        padding: 2rem 0;
    }
    
    .sponsor-detail-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .sponsor-detail-logo {
        max-width: 250px;
        margin: 0 auto;
    }
    
    .sponsor-detail-title {
        font-size: 1.8rem;
        text-align: center;
    }
    
    .sponsor-detail-description {
        font-size: 1rem;
        padding: 1rem;
    }
    
    .sponsor-detail-meta {
        justify-content: center;
        gap: 1rem;
    }
    
    .meta-item {
        font-size: 0.9rem;
        padding: 0.6rem 1rem;
    }
    
    .sponsor-detail-actions {
        justify-content: center;
    }
    
    .sponsor-btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.95rem;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .sponsor-related-articles .section-title,
    .general-tag-header .section-title {
        font-size: 1.5rem;
    }
    
    .pagination a,
    .pagination span {
        min-width: 35px;
        height: 35px;
        padding: 0.4rem 0.8rem;
        font-size: 0.9rem;
    }
}

/* ==========================================================================
   アクセシビリティ
   ========================================================================== */

.sponsor-btn:focus,
.pagination a:focus {
    outline: 3px solid #FF6B6B;
    outline-offset: 3px;
}

/* アニメーション無効化 */
@media (prefers-reduced-motion: reduce) {
    .sponsor-btn,
    .pagination a,
    .article-card-new {
        transition: none;
    }
}