/* Topics.css - Topics専用スタイルシート */

/* 共通変数 */
:root {
    --text-color: #333;
    --border-color: #E8E8E8;
    --transition: all 0.3s ease;
}

/* ページヘッダー */
.page-header {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #F0F0F0 100%);
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
}

.page-title {
    font-size: 3rem;
    font-weight: 600;
    /* color: var(--primary-color); */
    margin-bottom: 20px;
    letter-spacing: 2px;
}

.page-subtitle {
    font-size: 1.2rem;
    /* color: var(--text-color); */
    opacity: 0.8;
}

/* 記事ヘッダー */
.article-header {
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    position: relative;
    margin-bottom: 0;
}

.article-header .topic-category {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.article-header .page-title {
    color: white;
    font-size: 2.5rem;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.article-header .page-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-top: 20px;
}

/* パンくずリスト */
.breadcrumb-section {
    background: white;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    opacity: 0.7;
}

.breadcrumb-separator {
    margin: 0 10px;
    color: #999;
}

.breadcrumb .current {
    color: var(--text-color);
}

/* メインコンテンツ */
.topics-main {
    padding: 60px 0;
    background: #FAFAFA;
}

/* カテゴリーフィルター */
.category-filter {
    margin-bottom: 40px;
    padding: 30px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.category-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.category-item {
    padding: 12px 20px;
    background: #F8F8F8;
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.category-item:hover,
.category-item.active {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

.category-item a {
    color: inherit;
    text-decoration: none;
}

/* 記事一覧 */
.topics-list {
    display: grid;
    gap: 30px;
}

.topic-item {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: var(--transition);
    display: grid;
    grid-template-columns: 300px 1fr;
    min-height: 200px;
}

.topic-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.topic-image {
    position: relative;
    overflow: hidden;
}

.topic-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.topic-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: white;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.topic-category.campaign { background: #E74C3C; }
.topic-category.recruit { background: #27AE60; }
.topic-category.event { background: #9B59B6; }
.topic-category.media { background: #34495E; }

.topic-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.topic-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.topic-date {
    color: #999;
    font-size: 0.9rem;
}

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

.tag {
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 10px;
    background: #F0F0F0;
    color: var(--text-color);
}

.tag.important { background: #E74C3C; color: white; }
.tag.campaign { background: #E74C3C; color: white; }
.tag.recruit { background: #27AE60; color: white; }
.tag.event { background: #9B59B6; color: white; }

.topic-title {
    margin: 0 0 15px 0;
    font-size: 1.4rem;
    line-height: 1.4;
}

.topic-title a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.topic-title a:hover {
    color: var(--primary-color);
}

.topic-excerpt {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.topic-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    transition: var(--transition);
    align-self: flex-start;
}

.topic-link:hover {
    gap: 10px;
}

/* 記事詳細ページ */
.article-content {
    background: white;
    padding: 60px 40px;
    margin: -50px 0 40px;
    border-radius: 15px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    position: relative;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-color);
}

.article-body h2 {
    font-size: 1.6rem;
    margin: 40px 0 20px;
    color: var(--primary-color);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.article-body h3 {
    font-size: 1.3rem;
    margin: 30px 0 15px;
    color: var(--text-color);
}

.article-body p {
    margin-bottom: 20px;
}

.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 30px 0;
}

.article-body ul,
.article-body ol {
    margin: 20px 0;
    padding-left: 30px;
}

.article-body li {
    margin-bottom: 10px;
    line-height: 1.6;
}

/* シェアボタン */
.share-buttons {
    display: flex;
    gap: 10px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.share-button {
    padding: 12px 20px;
    border-radius: 6px;
    color: white;
    text-decoration: none;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
    font-weight: 500;
}

.share-button.twitter { background: #1DA1F2; }
.share-button.facebook { background: #4267B2; }
.share-button.line { background: #06C755; }

.share-button:hover {
    opacity: 0.8;
    transform: translateY(-2px);
    color: white;
}

/* 関連記事 */
.related-posts {
    margin-top: 60px;
}

.widget-title {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--text-color);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-color);
}

.related-post {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    transition: var(--transition);
}

.related-post:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.related-image {
    width: 120px;
    height: 80px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
}

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

.related-content h4 {
    margin: 0 0 8px 0;
    font-size: 1rem;
    line-height: 1.3;
}

.related-content h4 a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.related-content h4 a:hover {
    color: var(--primary-color);
}

.related-content .topic-date {
    display: block;
    margin-bottom: 8px;
}

.related-content p {
    margin: 0;
    font-size: 0.9rem;
    color: #666;
    line-height: 1.4;
}

/* ナビゲーション */
.article-navigation {
    margin-top: 40px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
}

.button {
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.button {
    background: var(--primary-color);
    color: white;
}

.button.secondary {
    background: #95A5A6;
    color: white;
}

.button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

/* サイドバー */
.sidebar {
    padding-left: 30px;
}

.sidebar-widget {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

.sidebar-widget .widget-title {
    font-size: 1.2rem;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}

/* 検索ウィジェット */
.search-form .input-group {
    display: flex;
}

.search-form .input-group-field {
    flex: 1;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px 0 0 6px;
    border-right: none;
}

.search-form .input-group-button .button {
    border-radius: 0 6px 6px 0;
    padding: 12px 16px;
}

/* カテゴリーウィジェット */
.categories-list,
.archive-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.categories-list li,
.archive-list li {
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.categories-list li:last-child,
.archive-list li:last-child {
    border-bottom: none;
}

.categories-list a,
.archive-list a {
    color: var(--text-color);
    text-decoration: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.categories-list a:hover,
.archive-list a:hover {
    color: var(--primary-color);
    padding-left: 10px;
}

.count {
    background: #F0F0F0;
    color: #666;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
}

/* 人気記事ウィジェット */
.popular-post {
    display: flex;
    gap: 12px;
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
}

.popular-post:last-child {
    border-bottom: none;
}

.popular-image {
    width: 60px;
    height: 45px;
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
}

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

.popular-content h4 {
    margin: 0 0 5px 0;
    font-size: 0.9rem;
    line-height: 1.3;
}

.popular-content h4 a {
    color: var(--text-color);
    text-decoration: none;
    transition: var(--transition);
}

.popular-content h4 a:hover {
    color: var(--primary-color);
}

.popular-content time {
    font-size: 0.8rem;
    color: #999;
}

/* CTAウィジェット */
.cta-widget {
    background: linear-gradient(135deg, var(--primary-color) 0%, #D4AF37 100%);
    color: white;
    text-align: center;
}

.cta-widget .widget-title {
    color: white;
    border-bottom-color: rgba(255, 255, 255, 0.3);
}

.cta-content p {
    margin-bottom: 20px;
    opacity: 0.9;
}

.cta-content .button {
    background: white;
    color: var(--primary-color);
    font-weight: 600;
}

.cta-content .button:hover {
    background: rgba(255, 255, 255, 0.9);
}

/* ページネーション */
.pagination-nav {
    margin-top: 60px;
    text-align: center;
}

.pagination {
    display: inline-flex;
    gap: 5px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.pagination li {
    margin: 0;
}

.pagination a,
.pagination .current {
    display: block;
    padding: 12px 16px;
    border-radius: 6px;
    text-decoration: none;
    transition: var(--transition);
}

.pagination a {
    background: white;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.pagination a:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .current {
    background: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

/* レスポンシブ */
@media screen and (max-width: 64em) {
    .sidebar {
        padding-left: 0;
        margin-top: 40px;
    }
    
    .topic-item {
        grid-template-columns: 1fr;
    }
    
    .article-navigation {
        flex-direction: column;
    }
    
    .related-post {
        flex-direction: column;
        gap: 15px;
    }
    
    .related-image {
        width: 100%;
        height: 150px;
    }
}

@media screen and (max-width: 39.9375em) {
    .page-title {
        font-size: 2rem;
    }
    
    .article-header {
        padding: 140px 0 80px;
        min-height: 300px;
    }
    
    .article-header .page-title {
        font-size: 1.8rem;
    }
    
    .article-content {
        padding: 30px 20px;
        margin: -30px 15px 30px;
    }
    
    .article-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .share-buttons {
        flex-wrap: wrap;
    }
    
    .category-list {
        justify-content: center;
    }
    
    .category-item {
        padding: 10px 16px;
        font-size: 0.9rem;
    }
}