/* ============================================
   記事詳細ページ 専用スタイル
   ============================================ */

/* ============================================
   記事ヘッダー
   ============================================ */
.article-header {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border-light);
}

.article-header .cat-label {
  margin-bottom: 14px;
}

.article-header__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  line-height: 1.45;
  color: var(--color-text-primary);
  margin: 14px 0 20px;
}

.article-header__meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.article-header__meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.article-header__meta-item svg {
  flex-shrink: 0;
}

/* ============================================
   アイキャッチ
   ============================================ */
.article-eyecatch {
  margin-bottom: 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-eyecatch img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

/* ============================================
   導入文
   ============================================ */
.article-intro {
  background: var(--color-bg-cream);
  border-left: 4px solid var(--color-brand-yellow);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 32px;
  font-size: var(--font-size-md);
  line-height: var(--line-height-loose);
  color: var(--color-text-primary);
}

.article-intro p + p {
  margin-top: 12px;
}

/* ============================================
   SNSシェア（旧テーマ parts/sns.php から移植・デザインは新規）
   ============================================ */
.article-share {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 24px 0 0;
}

.article-share__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  margin-right: 4px;
}

.article-share__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--color-bg-cream);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.article-share__btn:hover {
  background: var(--color-brand-yellow-mid);
  color: var(--color-brand-yellow-dark);
  border-color: var(--color-brand-yellow);
}

/* ============================================
   前後の記事ナビゲーション（旧テーマ single.php から移植・デザインは新規）
   ============================================ */
.article-post-nav {
  display: flex;
  align-items: stretch;
  gap: 12px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.article-post-nav__link {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.article-post-nav__link:hover {
  border-color: var(--color-brand-yellow);
  background: var(--color-bg-cream);
}

.article-post-nav__link--next {
  text-align: right;
  align-items: flex-end;
}

.article-post-nav__dir {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-yellow-dark);
}

.article-post-nav__title {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-post-nav__all {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 20px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.article-post-nav__all:hover {
  border-color: var(--color-brand-yellow);
  color: var(--color-brand-yellow-dark);
}

@media (max-width: 600px) {
  .article-post-nav {
    flex-wrap: wrap;
  }

  .article-post-nav__link {
    flex-basis: 100%;
  }

  .article-post-nav__all {
    flex-basis: 100%;
    padding: 12px;
  }
}

/* ============================================
   記事タグ
   ============================================ */
.article-tags {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border-light);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.article-tags__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  white-space: nowrap;
  padding-top: 2px;
}

/* ============================================
   インライン記事CTA
   ============================================ */
.article-inline-cta {
  margin: 40px 0;
  background: var(--color-bg-yellow-section);
  border: 1px solid var(--color-brand-yellow);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.article-inline-cta__inner {
  padding: 24px 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.article-inline-cta__text {
  flex: 1;
  min-width: 200px;
}

.article-inline-cta__label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-yellow-dark);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.article-inline-cta__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.7;
}

/* ============================================
   関連記事
   ============================================ */
.related-articles {
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.related-articles .section-header {
  margin-bottom: 20px;
}

.articles-grid--related {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* ============================================
   レスポンシブ（記事詳細ページ専用）
   ============================================ */
@media (max-width: 1024px) {
  .article-header__title {
    font-size: var(--font-size-xl);
  }

  .articles-grid--related {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .article-header__title {
    font-size: var(--font-size-lg);
  }

  .article-eyecatch {
    margin-left: calc(var(--gutter) * -1);
    margin-right: calc(var(--gutter) * -1);
    border-radius: 0;
  }

  .article-eyecatch .img-placeholder {
    height: 220px !important;
    border-radius: 0 !important;
  }

  .article-intro {
    padding: 16px 18px;
    font-size: var(--font-size-base);
  }

  .article-inline-cta__inner {
    flex-direction: column;
    text-align: center;
  }

  .article-inline-cta__inner .btn {
    width: 100%;
  }

  .articles-grid--related {
    grid-template-columns: 1fr;
  }

  .article-tags {
    flex-direction: column;
    gap: 10px;
  }
}