/* ============================================================
   AI観測ラボ ブログ — single.css
   投稿個別ページ固有スタイル
   CSS変数・ヘッダーは observatory-common.css で管理
   2026.02
   ============================================================ */

/* ===== リセット ===== */
.sgl-wrap *,
.sgl-wrap *::before,
.sgl-wrap *::after { box-sizing: border-box; }

/* ===== テーマ制限解除 ===== */
#secondary, .sidebar, .widget-area { display: none !important; }

.single .entry-content,
.single .entry-header,
.single .entry-footer {
  max-width: 100% !important;
  padding: 0 !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  margin: 0 !important;
}

/* GeneratePressのコンテナ幅・横スクロール制御 */
.single .site-content,
.single #content,
.single .inside-article,
.single .content-area,
.single .grid-container,
.single article {
  max-width: 100% !important;
  width: 100% !important;
  padding: 0 !important;
  margin: 0 auto !important;
  box-sizing: border-box !important;
  overflow-x: hidden !important;
}

/* site-contentの固定幅を解除（GeneratePressデフォルト上書き） */
.single #content.site-content {
  width: 100% !important;
  max-width: 100vw !important;
  min-width: 0 !important;
}

.single .site-content > div,
.single .site-content > article {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

/* ===== ラッパー ===== */
.sgl-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 40px 80px;
  font-family: var(--font-sans);
  box-sizing: border-box;
}


/* ============================================================
   ARTICLE HEADER
   ============================================================ */
.sgl-header {
  max-width: 760px;
  margin: 0 auto 48px;
  padding-top: 48px;
}

.sgl-header-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.sgl-cat-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--white);
  background: var(--star-blue);
  padding: 4px 10px;
  text-decoration: none;
  transition: background var(--transition);
}
.sgl-cat-badge:hover { background: var(--ink); color: var(--white); }

.sgl-meta-date,
.sgl-meta-time {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--ink-soft);
}
.sgl-meta-divider {
  color: var(--line-strong);
  font-family: var(--font-mono);
  font-size: 10px;
}

.sgl-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(28px, 3.8vw, 46px);
  line-height: 1.25;
  letter-spacing: -.01em;
  color: var(--ink);
  margin-bottom: 36px;
  border: none !important;
  padding: 0 !important;
  word-break: break-word;
  overflow-wrap: break-word;
}

/* アイキャッチ */
.sgl-eyecatch {
  position: relative;
  width: calc(100% + 80px);
  margin-left: -40px;
  margin-bottom: 48px;
  overflow: hidden;
  max-height: 480px;
}
.sgl-eyecatch img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.sgl-eyecatch-badge {
  position: absolute;
  bottom: 16px;
  left: 40px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .16em;
  color: var(--white);
  background: rgba(30,34,53,.75);
  padding: 4px 12px;
  backdrop-filter: blur(4px);
}


/* ============================================================
   BODY WRAP
   ============================================================ */
.sgl-body-wrap {
  max-width: 760px;
  margin: 0 auto 56px;
}


/* ============================================================
   目次 TOC
   ============================================================ */
.sgl-toc {
  border: 1px solid var(--line-strong);
  background: var(--bg2);
  margin-bottom: 48px;
  position: relative;
}
.sgl-toc::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 3px; height: 100%;
  background: var(--star-blue);
}

.sgl-toc-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--line);
}
.sgl-toc-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .22em;
  color: var(--star-blue);
  text-transform: uppercase;
}
.sgl-toc-toggle {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .14em;
  color: var(--ink-soft);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  transition: color var(--transition);
}
.sgl-toc-toggle:hover { color: var(--ink); }

.sgl-toc-nav { padding: 16px 20px 20px; }

.sgl-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc-h2;
}

.sgl-toc-h2 {
  counter-increment: toc-h2;
  margin-bottom: 8px;
}
.sgl-toc-h2 > a {
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 10px;
  transition: color var(--transition);
  line-height: 1.6;
}
.sgl-toc-h2 > a::before {
  content: counter(toc-h2, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--star-blue);
  letter-spacing: .1em;
  flex-shrink: 0;
  opacity: .7;
}
.sgl-toc-h2 > a:hover { color: var(--star-blue); }

.sgl-toc-h3 {
  margin-bottom: 4px;
  padding-left: 32px;
}
.sgl-toc-h3 > a {
  font-size: 12px;
  color: var(--ink-soft);
  text-decoration: none;
  display: flex;
  align-items: baseline;
  gap: 8px;
  transition: color var(--transition);
  line-height: 1.6;
}
.sgl-toc-h3 > a::before {
  content: '—';
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--line-strong);
  flex-shrink: 0;
}
.sgl-toc-h3 > a:hover { color: var(--star-blue); }


/* ============================================================
   ARTICLE CONTENT
   ============================================================ */
.sgl-content {
  font-size: 15px !important;
  line-height: 2 !important;
  color: var(--ink-mid) !important;
  font-family: var(--font-sans) !important;
}

/* テーマのデフォルトフォント上書き */
.sgl-content p,
.sgl-content li,
.sgl-content td {
  font-family: var(--font-sans) !important;
  font-size: 15px !important;
  line-height: 2 !important;
}

/* 見出し h2 */
.sgl-content h2 {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(22px, 2.8vw, 30px);
  line-height: 1.3;
  color: var(--ink);
  margin: 56px 0 20px;
  padding: 0 0 16px 20px;
  border-left: 3px solid var(--star-blue);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.sgl-content h2::before {
  content: attr(id);
  display: none;
}

/* 見出し h3 */
.sgl-content h3 {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.4;
  color: var(--ink);
  margin: 40px 0 16px;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
}

/* 見出し h4 */
.sgl-content h4 {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--ink);
  margin: 32px 0 12px;
  text-transform: uppercase;
}

/* 段落 */
.sgl-content p {
  margin-bottom: 20px;
}

/* 強調 */
.sgl-content strong {
  color: var(--ink);
  font-weight: 600;
}

/* リンク */
.sgl-content a {
  color: var(--star-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}
.sgl-content a:hover { color: var(--ink); }

/* リスト */
.sgl-content ul,
.sgl-content ol {
  padding-left: 24px;
  margin-bottom: 20px;
}
.sgl-content li {
  margin-bottom: 8px;
  line-height: 1.85;
}
.sgl-content ul li::marker { color: var(--star-blue); }
.sgl-content ol li::marker {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--star-blue);
}

/* 画像 */
.sgl-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 32px auto;
}
.sgl-content figure { margin: 32px 0; }
.sgl-content figcaption {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--ink-soft);
  text-align: center;
  margin-top: 8px;
}

/* 水平線 */
.sgl-content hr {
  border: none;
  border-top: 1px solid var(--line-strong);
  margin: 48px 0;
  position: relative;
}
.sgl-content hr::after {
  content: '✦';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg);
  padding: 0 12px;
  font-size: 10px;
  color: var(--star-blue);
  opacity: .5;
}

/* コードブロック */
.sgl-content pre {
  background: #f6f7f9;
  border: 1px solid #e2e8f0;
  padding: 24px 28px;
  overflow-x: auto;
  margin: 28px 0;
  position: relative;
  box-sizing: border-box;
  max-width: 100%;
  border-radius: 8px;
}
.sgl-content pre::before {
  content: 'CODE';
  position: absolute;
  top: 8px; right: 12px;
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: .2em;
  color: #a0aec0;
  opacity: .8;
}
.sgl-content pre code {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.75;
  color: #1a202c;
  background: none;
  padding: 0;
  border: none;
}

/* インラインコード */
.sgl-content code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg3);
  color: var(--star-blue);
  padding: 2px 6px;
  border: 1px solid var(--line-strong);
}

/* テーブル */
.sgl-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 13px;
}
.sgl-content thead {
  background: var(--ink);
}
.sgl-content thead th {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--star-blue-pale);
  padding: 12px 16px;
  text-align: left;
  font-weight: 400;
  border: none;
}
.sgl-content tbody tr {
  border-bottom: 1px solid var(--line);
  transition: background var(--transition);
}
.sgl-content tbody tr:hover { background: var(--bg2); }
.sgl-content tbody td {
  padding: 12px 16px;
  color: var(--ink-mid);
  line-height: 1.7;
  vertical-align: top;
  border: none;
}
.sgl-content tbody td:first-child {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink);
  letter-spacing: .04em;
}

/* 引用 */
.sgl-content blockquote {
  border-left: 3px solid var(--gold);
  background: var(--gold-pale);
  margin: 28px 0;
  padding: 20px 24px;
  font-style: italic;
  color: var(--ink-mid);
}
.sgl-content blockquote p { margin: 0; }


/* ============================================================
   TAGS
   ============================================================ */
.sgl-tags {
  max-width: 760px;
  margin: 0 auto 48px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
}
.sgl-tags-label {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: .22em;
  color: var(--ink-soft);
  text-transform: uppercase;
  padding-top: 5px;
  flex-shrink: 0;
}
.sgl-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.sgl-tag {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .12em;
  color: var(--ink-mid);
  border: 1px solid var(--line-strong);
  padding: 4px 10px;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition);
}
.sgl-tag:hover {
  border-color: var(--star-blue);
  color: var(--star-blue);
}


/* ============================================================
   CTA
   ============================================================ */
.sgl-cta { margin-bottom: 64px; }

.sgl-cta-inner {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: center;
  padding: 52px 60px;
  background: var(--ink);
}
.sgl-cta-bg-scope {
  position: absolute;
  right: -60px; top: 50%;
  transform: translateY(-50%);
  width: 260px; height: 260px;
  pointer-events: none;
  z-index: 0;
}
.sgl-cta-text { position: relative; z-index: 1; }

.sgl-cta-eyebrow {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--star-blue);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.sgl-cta-eyebrow::before {
  content: '';
  display: block;
  width: 20px; height: 1px;
  background: var(--star-blue);
}
.sgl-cta-title {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1.2;
  color: #fff;
  margin-bottom: 12px;
  border: none !important;
  padding: 0 !important;
}
.sgl-cta-title em { font-style: italic; color: var(--star-blue-pale); }
.sgl-cta-desc {
  font-size: 12px;
  line-height: 1.85;
  color: rgba(255,255,255,.45);
  margin: 0;
}
.sgl-cta-action { position: relative; z-index: 1; flex-shrink: 0; }

.sgl-btn-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 5px;
  padding: 18px 32px;
  background: var(--star-blue);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition);
}
.sgl-btn-cta:hover {
  background: #5a7faf;
  transform: translateY(-2px);
  color: #fff;
}
.sgl-btn-cta-sub {
  font-size: 9px;
  opacity: .65;
  letter-spacing: .08em;
  text-transform: none;
}


/* ============================================================
   RELATED ARTICLES
   ============================================================ */
.sgl-related { margin-bottom: 64px; }

.sgl-section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line-strong);
  position: relative;
}
.sgl-section-head::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0;
  width: 44px; height: 2px;
  background: var(--star-blue);
}
.sgl-section-en {
  font-family: var(--font-serif);
  font-weight: 300;
  font-size: 26px;
  color: var(--ink);
  letter-spacing: .02em;
}
.sgl-section-ja {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--ink-soft);
  text-transform: uppercase;
}
.sgl-section-log {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .14em;
  color: var(--star-blue);
  opacity: .55;
}

.sgl-related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--line);
}

.sgl-related-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  background: var(--white);
  transition: transform var(--transition), box-shadow var(--transition);
}
.sgl-related-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(107,143,191,.12);
  z-index: 2;
}

.sgl-related-img {
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg2);
  position: relative;
  flex-shrink: 0;
}
.sgl-related-img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .38s ease;
}
.sgl-related-card:hover .sgl-related-img img { transform: scale(1.04); }

.sgl-related-img-placeholder {
  width: 100%; height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg2);
}

.sgl-related-badge {
  position: absolute;
  top: 8px; left: 8px;
  font-family: var(--font-mono);
  font-size: 7px;
  letter-spacing: .14em;
  color: var(--star-blue);
  background: rgba(244,246,251,.9);
  border: 1px solid var(--line-strong);
  padding: 2px 6px;
}

.sgl-related-body { padding: 16px 18px 20px; }
.sgl-related-meta {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .1em;
  color: var(--ink-soft);
  margin-bottom: 8px;
}
.sgl-related-title {
  font-size: 13px;
  font-weight: 500;
  line-height: 1.65;
  color: var(--ink);
  transition: color var(--transition);
}
.sgl-related-card:hover .sgl-related-title { color: var(--star-blue); }


/* ============================================================
   POST NAVIGATION
   ============================================================ */
.sgl-post-nav {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  align-items: center;
  padding: 32px 0;
  border-top: 1px solid var(--line-strong);
  position: relative;
}
.sgl-post-nav::before {
  content: '';
  position: absolute;
  top: -1px; left: 0;
  width: 44px; height: 2px;
  background: var(--star-blue);
}

.sgl-post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-decoration: none;
  padding: 16px;
  border: 1px solid var(--line);
  transition: border-color var(--transition), background var(--transition);
}
.sgl-post-nav-link:hover {
  border-color: var(--star-blue);
  background: rgba(107,143,191,.04);
}
.sgl-post-nav-link--next { text-align: right; }

.sgl-post-nav-dir {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: .2em;
  color: var(--star-blue);
  text-transform: uppercase;
}
.sgl-post-nav-title {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  font-weight: 500;
}

.sgl-post-nav-center { text-align: center; }
.sgl-post-nav-archive {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  padding: 12px 16px;
  border: 1px solid var(--line-strong);
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .16em;
  color: var(--ink-soft);
  transition: border-color var(--transition), color var(--transition);
}
.sgl-post-nav-archive:hover {
  border-color: var(--star-blue);
  color: var(--star-blue);
}

.sgl-post-nav-empty {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .12em;
  color: var(--ink-soft);
  opacity: .5;
  text-align: center;
  padding: 16px;
}


/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .sgl-related-grid { grid-template-columns: 1fr 1fr; }
  .sgl-cta-inner { grid-template-columns: 1fr; gap: 28px; padding: 40px 36px; }
  .sgl-cta-action { text-align: left; }
}

@media (max-width: 680px) {
  .sgl-wrap { padding: 0 16px 60px; box-sizing: border-box; }
  .sgl-header { padding-top: 28px; }

  /* タイトルの折り返し */
  .sgl-title {
    font-size: clamp(20px, 6.5vw, 28px) !important;
    word-break: break-word;
    overflow-wrap: break-word;
  }

  /* アイキャッチ：SPはビューポート幅いっぱいに */
  .sgl-eyecatch {
  width: 100vw;
  margin-left: -16px;
  height: 220px;
  max-height: 220px;
  overflow: hidden;
}
  .sgl-eyecatch img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;  
}    
  .sgl-eyecatch-badge { left: 16px; top: 10px; bottom: auto;}

  /* 見出し */
  .sgl-content h2 { font-size: clamp(17px, 5vw, 22px) !important; padding-left: 14px; }
  .sgl-content h3 { font-size: clamp(15px, 4.5vw, 18px) !important; }

  /* 本文 */
  .sgl-content p,
  .sgl-content li { font-size: 14px !important; line-height: 1.9 !important; }

  /* テーブル：横スクロール */
  .sgl-content table {
    font-size: 11px;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
    width: auto;
    max-width: calc(100vw - 32px);;
  }
  .sgl-content thead th { padding: 8px 10px; }
  .sgl-content tbody td { padding: 8px 10px; }

  /* コードブロック：折り返し */
  .sgl-content pre {
    padding: 16px;
    white-space: pre-wrap;
    word-break: break-word;
    max-width: calc(100vw - 32px);
  }

  .sgl-body-wrap { margin-bottom: 40px; }
  .sgl-toc { margin-bottom: 32px; }
  .sgl-related-grid { grid-template-columns: 1fr; }
  .sgl-post-nav { grid-template-columns: 1fr; gap: 10px; }
  .sgl-post-nav-center { order: -1; }
  .sgl-post-nav-link--next { text-align: left; }
  .sgl-cta-inner { padding: 32px 20px; }
  .sgl-tags { flex-direction: column; gap: 10px; }
  .sgl-cta-title { font-size: clamp(20px, 6vw, 28px) !important; }
}


/* ============================================================
   絵文字サイズ調整
   WordPressが絵文字を<img>タグに変換する際のサイズ正規化
   ============================================================ */
.sgl-content img.emoji,
.sgl-content img.wp-smiley,
img.emoji,
img.wp-smiley {
  width: 18px !important;
  height: 18px !important;
  display: inline !important;
  vertical-align: middle !important;
  margin: 0 2px !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}

@media (max-width: 680px) {
  .sgl-content img:not(.emoji) {
    max-width: 100% !important;
    height: auto !important;
    display: block;
  }
}

@media (max-width: 680px) {
  .sgl-content img.aligncenter {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }
}