/* ========================================
   ブログ固有CSS — 吾輩はねこである
   共通スタイルは /common.css で定義
   ======================================== */

/* カテゴリナビゲーション */
.category-nav { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.category-btn { background: #fff; border: 1px solid #ddd; border-radius: 20px; padding: 6px 16px; font-size: 0.85rem; cursor: pointer; transition: all 0.2s; color: #555; font-family: inherit; }
.category-btn:hover { border-color: #1976D2; color: #1976D2; }
.category-btn.active { background: #1976D2; color: #fff; border-color: #1976D2; }

/* ブログカード一覧 */
.blog-list { display: grid; gap: 20px; }
.blog-card { background: #fff; border-radius: 12px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.06); border-left: 3px solid #1976D2; transition: box-shadow 0.2s, transform 0.2s; }
.blog-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.1); transform: translateY(-2px); }
.blog-card a { display: flex; text-decoration: none; color: inherit; }
.blog-card-image { width: 140px; min-height: 140px; flex-shrink: 0; background: #e8e8e8; overflow: hidden; display: flex; align-items: center; justify-content: center; }
.blog-card-image img { width: 100%; height: 100%; object-fit: cover; }
.blog-card-image--default { background: #E3F2FD; }
.blog-card-image--default img { object-fit: contain; padding: 20px; }
.blog-card-body { padding: 16px; flex: 1; min-width: 0; }
.blog-card-category { display: inline-block; background: #E3F2FD; color: #1976D2; padding: 2px 10px; border-radius: 10px; font-size: 0.75rem; font-weight: 600; margin-bottom: 8px; }
.blog-card-title { font-size: 1.05rem; font-weight: 700; color: #333; margin-bottom: 8px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.blog-card-excerpt { font-size: 0.85rem; color: #666; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.blog-card-date { font-size: 0.8rem; color: #999; }

/* ページネーション */
.pagination { display: flex; justify-content: center; align-items: center; gap: 16px; margin-top: 32px; }
.page-btn { background: #1976D2; color: #fff; border: none; padding: 8px 20px; border-radius: 6px; cursor: pointer; font-size: 0.9rem; font-family: inherit; }
.page-btn:hover:not(:disabled) { background: #1565C0; }
.page-btn:disabled { background: #ccc; cursor: default; }
.page-info { font-size: 0.9rem; color: #666; }

/* 記事ページ */
.article-header { margin-bottom: 32px; }
.article-category { display: inline-block; background: #E3F2FD; color: #1976D2; padding: 4px 14px; border-radius: 12px; font-size: 0.8rem; font-weight: 600; margin-bottom: 12px; }
.article-title { font-size: 1.8rem; font-weight: 700; color: #333; line-height: 1.4; margin-bottom: 12px; }
.article-meta { display: flex; gap: 16px; font-size: 0.85rem; color: #888; }
.article-meta time { display: flex; align-items: center; }
.article-author { display: flex; align-items: center; }

/* Markdownレンダリング */
.markdown-body { background: #fff; border-radius: 12px; padding: 32px; box-shadow: 0 2px 8px rgba(0,0,0,0.06); }
.markdown-body h1 { font-size: 1.6rem; color: #1976D2; margin: 32px 0 16px; padding-bottom: 8px; border-bottom: 2px solid #1976D2; }
.markdown-body h2 { font-size: 1.3rem; color: #1976D2; margin: 28px 0 14px; padding-bottom: 6px; border-bottom: 1px solid #e0e0e0; }
.markdown-body h3 { font-size: 1.1rem; color: #333; margin: 24px 0 12px; }
.markdown-body p { margin: 14px 0; line-height: 1.9; }
.markdown-body img { max-width: 100%; height: auto; border-radius: 8px; margin: 16px 0; box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.markdown-body ul, .markdown-body ol { margin: 14px 0; padding-left: 28px; }
.markdown-body li { margin: 6px 0; }
.markdown-body blockquote { border-left: 4px solid #1976D2; padding: 12px 20px; margin: 16px 0; background: #f8f9fa; border-radius: 0 8px 8px 0; color: #555; }
.markdown-body code { background: #f0f0f0; padding: 2px 6px; border-radius: 4px; font-size: 0.9em; font-family: 'Source Code Pro', monospace; }
.markdown-body pre { background: #2d2d2d; color: #f8f8f2; padding: 20px; border-radius: 8px; overflow-x: auto; margin: 16px 0; }
.markdown-body pre code { background: none; padding: 0; color: inherit; }
.markdown-body a { color: #1976D2; text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body .table-responsive { overflow-x: auto; margin: 16px 0; -webkit-overflow-scrolling: touch; }
.markdown-body table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.9rem; }
.markdown-body th, .markdown-body td { border: 1px solid #ddd; padding: 10px 14px; text-align: left; white-space: nowrap; }
.markdown-body th { background: #E3F2FD; font-weight: 600; color: #0D47A1; }
.markdown-body tr:nth-child(even) { background: #fafafa; }
.markdown-body tr:hover { background: #f0f7ff; }
.markdown-body hr { border: none; border-top: 1px solid #e0e0e0; margin: 24px 0; }

/* 記事フッター */
.article-footer { margin-top: 40px; padding-top: 24px; border-top: 1px solid #e0e0e0; }
.back-link { color: #1976D2; text-decoration: none; font-weight: 500; }
.back-link:hover { text-decoration: underline; }

/* 関連記事 */
.related-articles { margin-top: 40px; }
.related-articles h2 { font-size: 1.2rem; }
.related-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-top: 16px; }
.related-card { background: #fff; border-radius: 10px; padding: 16px; text-decoration: none; color: inherit; box-shadow: 0 2px 8px rgba(0,0,0,0.06); border-left: 3px solid #1976D2; transition: box-shadow 0.2s, transform 0.2s; }
.related-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.1); transform: translateY(-2px); }
.related-card h4 { font-size: 0.95rem; color: #333; margin-bottom: 8px; line-height: 1.4; }
.related-card time { font-size: 0.8rem; color: #999; }

/* ローディング */
.loading { text-align: center; padding: 60px 20px; color: #888; }
.loading-spinner { display: inline-block; width: 32px; height: 32px; border: 3px solid #e0e0e0; border-top-color: #1976D2; border-radius: 50%; animation: spin 0.8s linear infinite; margin-bottom: 12px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* エラー・空メッセージ */
.error-message, .empty-message { text-align: center; padding: 48px 24px; background: #fff; border-radius: 12px; color: #666; }
.error-message h2 { color: #d32f2f; border: none; }

/* noscriptフォールバック */
.noscript-content { background: #fff; border-radius: 12px; padding: 24px; }
.noscript-content h2 { font-size: 1.2rem; margin-bottom: 12px; }
.noscript-content ul { margin: 12px 0; padding-left: 24px; }
.noscript-content li { margin: 8px 0; }
.noscript-content a { color: #1976D2; }

/* ========================================
   レスポンシブ（ブログ固有）
   ======================================== */

/* タブレット */
@media (max-width: 768px) {
  .blog-card-image { width: 100px; min-height: 100px; }
  .article-title { font-size: 1.5rem; }
  .markdown-body { padding: 24px; }
  .related-list { grid-template-columns: 1fr; }
}

/* スマートフォン */
@media (max-width: 480px) {
  .category-nav { gap: 6px; }
  .category-btn { padding: 4px 12px; font-size: 0.8rem; }
  .blog-card-image { width: 80px; min-height: 80px; }
  .blog-card-body { padding: 12px; }
  .blog-card-title { font-size: 0.95rem; }
  .blog-card-excerpt { font-size: 0.8rem; }
  .article-title { font-size: 1.3rem; }
  .article-meta { flex-direction: column; gap: 4px; }
  .markdown-body { padding: 16px; border-radius: 10px; }
  .markdown-body h1 { font-size: 1.3rem; }
  .markdown-body h2 { font-size: 1.15rem; }
  .markdown-body p { font-size: 0.9rem; }
  .markdown-body img { border-radius: 6px; }
}