/* 標準投稿の詳細（single.php）用 */

:root {
    --accent-color: #2899B2;
    --accent-color-rgb: 40, 153, 178;
}

/* ページヘッダー - clubs ページと統一。ただし本文（.post-container）と
   左端を揃えるため、この記事詳細だけ本文と同じ幅にする */
.page_header {
    width: 100%;
    max-width: 800px;
    margin: 100px auto 0;
    padding: 0 1rem;
}

/* コンテナ - clubs ページと統一 */
.container {
    width: 100%;
    max-width: 1024px;
    margin: 0 auto;
    padding: 0 1rem;
}

.post-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    font-size: 0.8125rem;
    color: #6b7280;
}

.post-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.post-category {
    padding: 0.125rem 0.75rem;
    border-radius: 999px;
    background-color: rgba(var(--accent-color-rgb), 0.12);
    color: var(--accent-color);
    font-weight: 500;
}

.post-title {
    font-size: 2rem;
    font-weight: bold;
    line-height: 1.4;
}

.post-container {
    max-width: 800px;
    margin-bottom: 4rem;
}

.post-hero {
    margin: 2rem 0;
}

.post-hero img {
    width: 100%;
    height: auto;
    border-radius: 1rem;
}

.post-content {
    font-size: 1rem;
    line-height: 1.8;
    color: #374151;
    margin: 2rem 0;
}

.post-content h2 {
    font-size: 1.5rem;
    font-weight: bold;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e5e7eb;
}

.post-content h3 {
    font-size: 1.25rem;
    font-weight: bold;
    margin: 1.5rem 0 0.75rem;
    color: #1f2937;
}

.post-content p {
    margin: 1rem 0;
}

.post-content ul,
.post-content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

.post-content li {
    margin: 0.5rem 0;
}

.post-content a {
    color: var(--accent-color);
}

.post-content img {
    max-width: 100%;
    height: auto;
    margin: 1.5rem 0;
    border-radius: 0.5rem;
}

.post-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background-color: #f3f4f6;
    border-left: 4px solid var(--accent-color);
    font-style: italic;
}

/* 前後の記事 */
.post-navigation {
    margin: 3rem 0 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e5e7eb;
}

.post-navigation .nav-links {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* 前の記事がない場合でも次の記事を右に置く */
.post-navigation .nav-next {
    grid-column: 2;
}

.post-navigation .nav-links a {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    height: 100%;
    padding: 1rem 1.25rem;
    background-color: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    box-shadow: rgba(0, 0, 0, 0.05) 0px 4px 6px -1px, rgba(0, 0, 0, 0.025) 0px 2px 4px -1px;
    text-decoration: none;
    transition: border-color 0.3s ease;
}

.post-navigation .nav-next a {
    text-align: right;
}

.post-navigation .nav-links a:hover {
    border-color: var(--accent-color);
}

.post-navigation .nav-label {
    font-size: 0.8125rem;
    color: #6b7280;
    transition: color 0.3s ease;
}

.post-navigation .nav-previous .nav-label::before {
    content: "\2039\00a0";
}

.post-navigation .nav-next .nav-label::after {
    content: "\00a0\203a";
}

.post-navigation .nav-title {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.6;
    color: #374151;
    transition: color 0.3s ease;
}

.post-navigation .nav-links a:hover .nav-label,
.post-navigation .nav-links a:hover .nav-title {
    color: var(--accent-color);
}

/* 記事一覧に戻る - 特集記事の戻るボタンと同じ見た目 */
.post-back {
    margin: 2rem 0 1rem;
    text-align: center;
}

.btn_back {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 999px;
    background-color: rgba(var(--accent-color-rgb), 0.2);
    font-weight: bold;
    color: var(--accent-color);
    text-decoration: none;
}

/* モバイル対応 */
@media (max-width: 767px) {
    .page_header {
        margin-top: 80px;
    }

    .post-title {
        font-size: 1.5rem;
    }

    .post-navigation .nav-links {
        grid-template-columns: 1fr;
    }

    .post-navigation .nav-next {
        grid-column: auto;
    }

    .post-navigation .nav-next a {
        text-align: left;
    }
}