/* Column single and index overrides */

/* Single: 基本上限なし＋左右マージン（読みやすい余白を確保） */
body.single-column .content-wrapper,
body.single-column .container { max-width: none; }
/* single-column ではヘッダー/フッター含めて1360pxの上限に統一（news.cssを使わないため明示） */
body.single-column header .content-wrapper,
body.single-column footer .content-wrapper,
body.single-column .content-wrapper,
body.single-column .container { max-width: 1360px !important; width: 100%; margin: 0 auto; padding-left: 20px; padding-right: 20px; }
/* シングルコラムではグローバルヘッダーの固定を解除して混同回避 */
body.single-column header { position: static; box-shadow: none; }

.article { padding: calc(var(--header-height) + 32px) clamp(16px, 6vw, 160px) 56px; }
.article-title { font-size: clamp(1.8rem, 2.4vw, 2.4rem); line-height: 1.25; margin: 12px 0 6px; font-weight: 800; }
.article-meta { color:#666; font-size:.95rem; display:flex; gap:12px; flex-wrap:wrap; align-items:center; margin-bottom: 8px; }
.article-meta .sep { display:none; }
.article-meta .cat a { color: inherit; text-decoration: underline; }

.article-cover { margin: 0 0 16px; height: clamp(260px, 38vw, 520px); overflow: hidden; border-radius: 0; }
.article-cover img { width: 100%; height: 100%; display:block; object-fit: cover; }
.article-cover img.fallback-logo { object-fit: contain; background:#fff; }

/* Layout: toc aside on desktop */
.article-layout { display: block; margin-bottom: 28px; }
.article-layout.has-toc { display: grid; grid-template-columns: 260px 1fr; gap: 32px; align-items: start; }
@media (max-width: 992px) { .article-layout.has-toc { grid-template-columns: 1fr; } }

/* Sticky TOC only for theme-generated aside; inline TOCs in content stay static */
.article-layout.has-toc > .toc { position: sticky; top: 100px; padding:0; }
/* Ensure any TOC placed inside article body is not sticky */
.article-body .toc { position: static; top: auto; }
@media (max-width: 992px) {
  .toc { position: static; top: auto; margin-bottom: 16px; }
}
.toc strong { display:block; margin-bottom:8px; font-size: .95rem; color:#333; }
.toc ol { list-style: decimal; padding-left: 1.2em; margin: 0; }
.toc li { margin: 6px 0; }
.toc a { color:#333; text-decoration: underline; }
.toc a:hover { color: var(--accent); }

.article-body { line-height: 1.9; font-size: 1.05rem; }
.article-body p { margin: 1.1em 0; }
.article-body h2 { margin: 2em 0 1em; font-size: 1.6rem; border-bottom: 2px solid #eee; padding-bottom: .4em; color: var(--primary); }
.article-body h3 { margin: 1.6em 0 0.8em; font-size: 1.3rem; color: var(--primary); }
.article-body ul, .article-body ol { margin: 1.1em 0 1.1em 1.5em; }
.article-body li { margin: .4em 0; }
.article-body blockquote { margin: 1.5em 0; padding: 1em 1.2em; background:#f9f9f9; border-left: 4px solid var(--primary); }
.article-body img { border-radius: 6px; }

.article-footer { border-top:1px solid #eee; margin-top: 28px; padding-top: 16px; display:flex; justify-content: flex-start; align-items:center; }
.article-share { display:flex; align-items:center; gap:12px; }
.article-share .share-x { display:inline-flex; align-items:center; gap:8px; padding:6px 12px; border:1px solid #ddd; border-radius:999px; background:#fff; color:#222; text-decoration:none; font-weight:600; font-size:.95rem; position:relative; }
.article-share .share-x:hover { border-color:#aaa; background:#f7f7f7; }
.article-share .share-x span[aria-hidden] { font-weight:800; letter-spacing:.5px; }

/* Override news.css X button styles on column single */
body.single-column .article-share .share-x { background:#fff !important; color:#222 !important; }
body.single-column .article-share .share-x::before { content:none !important; }

/* Index page: リストの可読性とホバー強化 */
.column-list { list-style: none; padding-left: 0; margin: 8px 0 24px; width: 100%; }
.column-list-item { 
  position: relative;
  padding: 16px 0; 
  border-bottom: 1px solid #eee; 
  background: transparent; 
  transition: background-color .18s ease;
}
.column-list-item:first-child { border-top: 1px solid #eee; }
.column-list-item + .column-list-item { margin-top: 0; }
.column-list-item:hover { background-color: #fafafa; }
.column-list-meta { color:#777; font-size:.92rem; display:flex; gap:10px; flex-wrap:wrap; margin-bottom: 8px; align-items:center; }
.column-list-meta .date { font-variant-numeric: tabular-nums; letter-spacing:.02em; }
.column-list-meta .cat { 
  display:inline-block; 
  padding: 2px 8px; 
  font-size: .82rem; 
  border: 1px solid rgba(0,0,0,.08); 
  border-radius: 999px; 
  background: var(--light);
  color: var(--primary);
}
.column-list-title { font-size: clamp(1.1rem, 2.2vw, 1.35rem); font-weight: 800; color: var(--primary); line-height: 1.35; }
.column-list-title a { 
  color: inherit; 
  text-decoration: none; 
  display: inline-flex; 
  align-items: center; 
  gap: 8px; 
}
.column-list-title a::after { 
  content: '→';
  font-size: 16px; 
  line-height: 1; 
  color: var(--accent);
  transform: translateX(0);
  transition: transform .18s ease;
}
.column-list-item:hover .column-list-title a::after, .column-list-title a:focus-visible::after { transform: translateX(4px); }
.column-list-title a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.column-list-title a:hover { text-decoration: underline; text-underline-offset: 3px; }
.column-list-excerpt { color:#444; margin-top: 8px; line-height: 1.7; }

@media (max-width: 600px) {
  .column-list-item { padding: 14px 12px; border-radius: 8px; }
  .column-list-meta { font-size: .88rem; gap: 8px; }
  .column-list-excerpt { margin-top: 6px; }
}

/* Filter: ensure hidden sections are actually hidden despite global section display */
.column-section[hidden] { display: none !important; }

/* Related columns */
.related-columns { margin-top: 56px; }
.related-columns { align-items: stretch; }
.related-columns > * { width: 100%; }
.related-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; color: var(--primary); }
.related-list { list-style: none; padding-left: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.related-item { border-bottom: 1px solid #eee; padding-bottom: 8px; }
.related-link { display:flex; align-items: center; gap: 12px; text-decoration: none; color: inherit; }
.related-thumb { width: 64px; height: 64px; flex: 0 0 auto; overflow: hidden; border-radius: 6px; background:#fff; display:block; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; display:block; }
.related-text { display:flex; flex-direction: column; gap: 6px; min-width: 0; }
.related-date { font-size: .86rem; color:#777; }
.related-title-text { font-weight: 600; line-height: 1.4; }
.related-link:hover .related-title-text { text-decoration: underline; }
.related-item.is-current .related-link { pointer-events: none; opacity: .7; }

/* Post navigation on column single */
.post-nav { 
  display: flex; 
  justify-content: space-between; 
  align-items: center; 
  gap: 16px; 
  margin-top: 48px; 
  padding-top: 16px; 
  border-top: 1px solid #eee; 
  margin-bottom: 64px; 
}
.post-nav .prev a, 
.post-nav .next a { 
  color: var(--primary); 
  text-decoration: none; 
  font-weight: 700; 
}
.post-nav .prev a:hover, 
.post-nav .next a:hover { color: var(--accent); }
.post-nav .prev:empty, 
.post-nav .next:empty { display: none; }