/* ===== Article Layout ===== */
/* パンくずを本文と同じ幅・余白に揃える（記事ページ用の上書き） */
.breadcrumb {
  max-width: var(--w-max);
  margin: 0 auto;
  padding: 28px 24px 8px;
}
@media (max-width: 480px) {
  .breadcrumb { padding: 20px 16px 8px; }
}

.article-layout {
  max-width: var(--w-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  padding: 16px 24px 80px;
}
@media (max-width: 480px) {
  .article-layout { padding: 12px 16px 64px; }
}
@media (min-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr) var(--w-sidebar);
    gap: var(--gutter);
  }
}

.article-main { min-width: 0; }

/* ===== Article Header ===== */
.article-header { padding: 32px 0 48px; }
@media (min-width: 768px) { .article-header { padding: 48px 0 56px; } }

.article-thumbnail {
  aspect-ratio: 1200 / 630;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(45,95,63,0.04), rgba(201,123,90,0.06)),
    repeating-linear-gradient(45deg, #F2EDE4 0 14px, #EDE5D6 14px 28px);
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
/* 実画像が全記事にそろったためプレースホルダー文字は非表示 */
.article-thumbnail::after { content: none; }
.article-thumbnail img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
}

.tag {
  display: inline-block;
  margin-top: 28px;
  padding: 4px 12px;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
  background: transparent;
  border-radius: 999px;
  font-size: 12px;
  letter-spacing: 0.06em;
  font-weight: 500;
  text-decoration: none;
}
.tag--english { border-color: var(--color-primary); color: var(--color-primary); }
.tag--shikaku { border-color: var(--color-accent); color: var(--color-accent); }
.tag--reskilling { border-color: var(--color-primary-dark); color: var(--color-primary-dark); }

.article-lede {
  margin-top: 24px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 15px;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.article-title {
  margin-top: 12px;
  font-size: 28px;
  line-height: 1.4;
  color: var(--color-primary-dark);
  text-wrap: balance;
  letter-spacing: 0.005em;
}
@media (min-width: 768px) {
  .article-title { font-size: 36px; }
}

/* ===== Article Meta ===== */
.article-meta {
  margin-top: 32px;
  padding: 20px;
  background: var(--color-bg-muted);
  border-radius: 4px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: center;
}
@media (min-width: 640px) {
  .article-meta { grid-template-columns: 1fr auto; gap: 24px; }
}
.article-meta__author { display: flex; align-items: center; gap: 12px; }
.article-author__avatar {
  width: 48px; height: 48px; border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-size: 20px;
  flex-shrink: 0;
}
.article-author__name { font-size: 14px; font-weight: 600; color: var(--color-text); line-height: 1.4; }
.article-author__role { font-size: 12px; color: var(--color-text-muted); line-height: 1.4; }
.article-dates {
  display: flex; flex-wrap: wrap; gap: 20px;
  font-size: 12px;
}
.article-dates > div { display: flex; flex-direction: column; gap: 2px; }
.article-dates dt { color: var(--color-text-muted); letter-spacing: 0.06em; }
.article-dates dd { color: var(--color-text); font-weight: 500; }

/* ===== Article Summary ===== */
.article-summary {
  margin-top: 40px;
  background: var(--color-bg-tint);
  border-left: 4px solid var(--color-accent);
  padding: 28px;
  border-radius: 4px;
}
.article-summary h2 {
  font-size: 17px;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}
.article-summary ul { display: flex; flex-direction: column; gap: 8px; }
.article-summary li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.85;
}
.article-summary li::before {
  content: "\2014";
  position: absolute; left: 0; top: 0;
  color: var(--color-accent);
  font-weight: 500;
}

/* ===== TOC ===== */
.toc {
  margin: 56px 0 8px;
  padding-left: 20px;
  border-left: 2px solid var(--color-border-strong);
}
.toc__title {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-primary);
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}
.toc__list { display: flex; flex-direction: column; gap: 6px; counter-reset: toc; }
.toc__list li { counter-increment: toc; padding-left: 32px; position: relative; font-size: 15px; }
.toc__list li::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute; left: 0; top: 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 13px;
  color: var(--color-text-muted);
}
.toc__list a { color: var(--color-text); text-decoration: none; border-bottom: 1px dotted var(--color-border-strong); padding-bottom: 1px; }
.toc__list a:hover { color: var(--color-primary); border-bottom-color: var(--color-accent); }

/* ===== Prose (article body) ===== */
.article-body.prose {
  max-width: var(--w-article);
  margin: 0;
  padding-left: 24px;
  border-left: 1px solid var(--color-border);
  margin-top: 32px;
}
@media (max-width: 768px) {
  .article-body.prose { padding-left: 16px; }
}

.prose h2 {
  font-family: var(--font-serif);
  color: var(--color-primary);
  font-size: 22px;
  line-height: 1.5;
  margin-top: 72px;
  border-top: 1px solid var(--color-border-strong);
  padding-top: 28px;
  margin-bottom: 0;
}
@media (min-width: 768px) { .prose h2 { font-size: 24px; } }
.prose h2::after {
  content: "\2042";
  display: block;
  margin: 12px 0 8px;
  color: var(--color-border-strong);
  font-size: 14px;
  letter-spacing: 0.4em;
}
.prose h3 {
  font-family: var(--font-serif);
  color: var(--color-primary-dark);
  font-size: 18px;
  line-height: 1.5;
  margin-top: 40px;
  border-left: 2px solid var(--color-accent);
  padding-left: 12px;
}
.prose p { margin-top: 1em; text-wrap: pretty; }
.prose .atomic-answer {
  margin-top: 20px;
  background: var(--color-primary-soft);
  border-left: 4px solid var(--color-primary);
  padding: 12px 16px;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.85;
  border-radius: 2px;
}
.prose ul, .prose ol {
  margin-top: 1em;
  padding-left: 1.2em;
}
.prose ul li, .prose ol li {
  line-height: 1.9;
  margin-top: 6px;
  padding-left: 6px;
}
.prose ul li { list-style: none; position: relative; padding-left: 22px; }
.prose ul li::before {
  content: "\2014";
  position: absolute; left: 0; top: 0;
  color: var(--color-accent);
}
.prose ol { list-style: decimal-leading-zero; }
.prose ol li::marker { color: var(--color-text-muted); font-family: var(--font-serif); font-style: italic; font-size: 14px; }

.prose blockquote {
  margin: 1.4em 0;
  border-left: 2px solid var(--color-border-strong);
  background: var(--color-quote-bg);
  padding: 20px 24px;
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.85;
  border-radius: 0 4px 4px 0;
}
.prose blockquote p { margin-top: 0; }
.prose blockquote p + p { margin-top: 0.8em; }

.prose table {
  margin: 1.6em 0;
  width: 100%;
  border-collapse: collapse;
  border-top: 2px solid var(--color-border-strong);
  border-bottom: 2px solid var(--color-border-strong);
  font-size: 15px;
}
.prose th, .prose td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}
.prose th {
  background: var(--color-bg-muted);
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-primary-dark);
  font-size: 14px;
  letter-spacing: 0.04em;
}
.prose tr:last-child td { border-bottom: 0; }

.prose code {
  background: #F2EDE4;
  padding: 2px 8px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--color-primary-dark);
}
.prose pre {
  margin-top: 1.4em;
  background: #1A3D27;
  color: #F2EDE4;
  padding: 20px;
  border-radius: 4px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
}
.prose pre code { background: transparent; padding: 0; color: inherit; }

.prose a { color: var(--color-link); text-decoration: underline; text-underline-offset: 3px; }
.prose a:hover { color: var(--color-accent); }

.prose figure { margin: 1.6em 0; }
.prose figcaption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-muted);
  font-family: var(--font-serif);
  font-style: italic;
  text-align: center;
}

/* Utility classes in prose */
.afflink { color: var(--color-link); }
.src-todo {
  background: #FBF1E0;
  padding: 1px 6px;
  border-radius: 2px;
  color: #8B6914;
  font-size: 0.85em;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.internal-link { color: var(--color-link); }

/* ===== Article CTA ===== */
.article-cta {
  margin-top: 80px;
  padding: 40px 32px;
  background: var(--color-accent-soft);
  border: 1px solid rgba(201, 123, 90, 0.3);
  border-radius: 4px;
  text-align: center;
}
.article-cta h2 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
}
.article-cta p { margin-top: 0.5em; color: var(--color-text); }
.article-cta .btn { margin-top: 12px; }

/* ===== Related ===== */
.related { margin-top: 80px; }
.related__head {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-strong);
  margin-bottom: 24px;
}
.related__head h2 {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-primary-dark);
  letter-spacing: 0.04em;
}
.related__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
@media (min-width: 768px) {
  .related__grid { grid-template-columns: repeat(3, 1fr); }
}
.related-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0 0 20px;
  overflow: hidden;
  transition: box-shadow .2s ease, transform .2s ease;
}
.related-card a { display: block; text-decoration: none; color: inherit; }
.related-card:hover { box-shadow: var(--shadow-md); }
.related-card__thumb {
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(45,95,63,0.06), rgba(201,123,90,0.08)),
    repeating-linear-gradient(45deg, #F2EDE4 0 10px, #EDE5D6 10px 20px);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}
.related-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.related-card__body { padding: 16px 20px 0; }
.related-card__tag {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  text-transform: uppercase;
}
.related-card__title {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-primary-dark);
  margin-top: 6px;
}

/* ===== Share ===== */
.share {
  margin-top: 56px;
  padding: 24px;
  background: var(--color-bg-muted);
  border-radius: 4px;
  text-align: center;
}
.share h3 {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-primary-dark);
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}
.share__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.share__btn {
  display: inline-block;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 2px;
  text-decoration: none;
  letter-spacing: 0.04em;
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  color: var(--color-text);
  transition: background .15s ease, color .15s ease;
}
.share__btn:hover { background: var(--color-text); color: var(--color-bg); }
.share__btn--x { color: #1A1A1A; border-color: #1A1A1A; }
.share__btn--x:hover { background: #1A1A1A; color: #FAF7F2; }
.share__btn--fb { color: #1A3D62; border-color: #1A3D62; }
.share__btn--fb:hover { background: #1A3D62; color: #FAF7F2; }
.share__btn--in { color: #0A4A6B; border-color: #0A4A6B; }
.share__btn--in:hover { background: #0A4A6B; color: #FAF7F2; }
.share__btn--copy { color: var(--color-primary); border-color: var(--color-primary); }
.share__btn--copy:hover { background: var(--color-primary); color: var(--color-bg); }

/* ===== Article Sidebar ===== */
.article-sidebar {
  background: transparent;
  display: flex;
  flex-direction: column;
}
@media (min-width: 1024px) {
  .article-sidebar {
    position: sticky;
    top: calc(var(--h-header) + 16px);
    align-self: start;
    max-height: calc(100vh - var(--h-header) - 32px);
    overflow-y: auto;
    padding-right: 4px;
  }
}

/* ===== Mobile tweaks ===== */
@media (max-width: 480px) {
  .article-meta { padding: 16px; }
  .article-summary { padding: 20px; }
  .article-cta { padding: 28px 20px; }
  .share { padding: 18px; }
}