/* ============================================
   STL Sleep Blog - Stylesheet
   ============================================ */

/* ---- Article page: global h2 spacing (for inline-styled pages) ---- */
.article-wrap h2 {
  margin-top: 2rem;
  margin-bottom: 0.8rem;
}

/* ---- Article section wrappers ---- */
.article-section,
.article-faq,
.article-references {
  margin: 0;
  padding: 0;
}

/* ---- Blog Filter ---- */
.blog-filter-wrap {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
  justify-content: center;
}
.blog-filter-wrap .filter-btn {
  font-size: 0.82rem;
  padding: 0.45rem 1.2rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(79,195,247,0.35);
  background: transparent;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-body);
}
.blog-filter-wrap .filter-btn:hover,
.blog-filter-wrap .filter-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: 600;
}

/* ---- Blog Grid ---- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .blog-grid { grid-template-columns: 1fr; }
}

/* ---- Blog Card ---- */
.blog-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.blog-card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}
.blog-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.blog-card:hover .blog-card-img img {
  transform: scale(1.05);
}
.blog-card-cat {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
}
.blog-card-body {
  padding: 1.6rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.78rem;
  color: var(--color-text-light);
  margin-bottom: 0.8rem;
}
.blog-read-time {
  font-size: 0.75rem;
}
.blog-card-title {
  font-size: 1.05rem;
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-primary);
  margin-bottom: 0.8rem;
}
.blog-card-excerpt {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 1.2rem;
}
.blog-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid rgba(79,195,247,0.15);
}
.blog-author {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--color-text-light);
  font-weight: 500;
}
.blog-author-icon {
  font-size: 1rem;
}
.blog-card-arrow {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-accent);
}

/* ---- Article Page ---- */
.article-hero {
  position: relative;
  width: 100%;
  max-height: 520px;
  overflow: hidden;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.article-hero img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  display: block;
}
.article-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5,8,24,0.2) 0%, rgba(5,8,24,0.65) 100%);
}
.article-hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 3rem 2rem 2.5rem;
  max-width: 860px;
  margin: 0 auto;
}

.article-wrap {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 2rem 4rem;
}

/* Article meta bar */
.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(79,195,247,0.15);
  font-size: 0.82rem;
  color: var(--color-text-light);
}
.article-meta-cat {
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 0.28rem 0.85rem;
  border-radius: var(--radius-full);
}

/* Article body typography */
.article-body h2 {
  font-size: 1.6rem;
  margin: 2rem 0 0.8rem;
  color: var(--color-primary);
  padding-left: 1rem;
  border-left: 4px solid var(--color-accent);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.8rem;
  color: var(--color-primary);
}
.article-body p {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 1.4rem;
}
.article-body ul, .article-body ol {
  padding-left: 1.4rem;
  margin-bottom: 1.4rem;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}
.article-body strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* Article inline image */
.article-img-wrap {
  margin: 2.5rem 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.article-img-wrap img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
}
.article-img-caption {
  font-size: 0.78rem;
  color: var(--color-text-light);
  text-align: center;
  padding: 0.6rem 1rem;
  background: #f4f6ff;
}

/* Callout / highlight box */
.article-callout {
  background: linear-gradient(135deg, rgba(79,195,247,0.08), rgba(79,195,247,0.04));
  border: 1px solid rgba(79,195,247,0.3);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.6rem;
  margin: 1.4rem 0;
}
.article-callout p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-primary);
  line-height: 1.8;
}
.article-callout-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

/* Research badge */
.research-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  background: rgba(79,195,247,0.08);
  border: 1px solid rgba(79,195,247,0.25);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

/* Action checklist */
.action-checklist {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  margin: 2rem 0;
  border: 1px solid rgba(79,195,247,0.12);
}
.action-checklist h3 {
  color: var(--color-primary);
  margin-bottom: 1.2rem;
  font-size: 1.1rem;
}
.action-item {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid rgba(79,195,247,0.08);
}
.action-item:last-child { border-bottom: none; }
.action-item-num {
  min-width: 28px;
  height: 28px;
  background: var(--color-accent);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.1rem;
}
.action-item-text {
  flex: 1;
}
.action-item-text strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
  color: var(--color-primary);
}
.action-item-text span {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* CTA box at end of article */
.article-cta-box {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 3rem 2.5rem;
  text-align: center;
  margin-top: 4rem;
  color: var(--color-white);
  overflow: hidden;
  box-shadow: 0 16px 50px rgba(5,10,40,0.4);
}
.article-cta-box > img.cta-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
  pointer-events: none;
}
.article-cta-box > .cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg, rgba(5,10,30,0.72) 0%, rgba(8,14,45,0.80) 100%);
  z-index: 1;
  pointer-events: none;
  border-radius: var(--radius-lg);
}
.article-cta-box > *:not(img):not(.cta-overlay) {
  position: relative;
  z-index: 2;
}
.article-cta-box h3 {
  color: var(--color-white);
  margin-bottom: 0.8rem;
}
.article-cta-box p {
  color: rgba(255,255,255,0.65);
  font-size: 0.9rem;
  margin-bottom: 1.8rem;
}

/* Share / nav row */
.article-nav-row {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(79,195,247,0.15);
  flex-wrap: wrap;
}

/* Table of Contents */
.article-toc {
  background: #f4f8ff;
  border: 1px solid rgba(79,195,247,0.2);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.8rem;
  margin: 1.5rem 0 1.8rem;
}
.article-toc-title {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.8rem;
}
.article-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc-counter;
}
.article-toc li {
  counter-increment: toc-counter;
  font-size: 0.88rem;
  padding: 0.3rem 0;
  color: var(--color-text);
  border-bottom: none;
  margin: 0;
}
.article-toc li::before {
  content: counter(toc-counter) ". ";
  color: var(--color-accent);
  font-weight: 700;
}
.article-toc a {
  color: var(--color-text);
  text-decoration: none;
}
.article-toc a:hover { color: var(--color-accent); }

/* ========================================
   ブログ モバイル対応追加パッチ (2026-03-17)
   ======================================== */

@media (max-width: 767px) {
  /* 記事ヒーロー */
  .article-hero {
    min-height: 260px;
  }
  .article-hero > div:last-child {
    padding: 1.5rem 1rem 1.5rem !important;
  }
  .article-hero h1 {
    font-size: clamp(1.2rem, 4.5vw, 1.8rem) !important;
    line-height: 1.4 !important;
  }
  .article-meta-cat {
    font-size: 0.7rem;
    padding: 0.25rem 0.6rem;
  }

  /* 記事本文 */
  .article-wrap {
    padding: 2rem 1rem;
    max-width: 100%;
  }
  .article-wrap h2 {
    font-size: 1.2rem;
  }
  .article-wrap h3 {
    font-size: 1rem;
  }
  .article-meta-bar {
    font-size: 0.76rem;
    gap: 0.4rem;
  }

  /* アクションチェックリスト */
  .action-item {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
  }
  .action-item-num {
    width: 2rem;
    height: 2rem;
    min-width: 2rem;
    font-size: 0.85rem;
    margin-bottom: 0.2rem;
  }

  /* 目次 */
  .article-toc {
    padding: 1rem 1rem;
  }
  .article-toc li {
    font-size: 0.82rem;
    padding: 0.25rem 0;
  }

  /* CTAボックス */
  .article-cta-box {
    padding: 2rem 1.2rem;
  }
  .article-cta-box h3 {
    font-size: 1.1rem;
  }
  .article-cta-box > div {
    flex-direction: column;
    gap: 0.8rem;
  }
  .article-cta-box .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  /* FAQ */
  .article-wrap [style*="padding:1.4rem"] {
    padding: 1rem !important;
  }

  /* ブログカード */
  .blog-card-title {
    font-size: 0.95rem;
  }
  .blog-card-excerpt {
    font-size: 0.82rem;
    -webkit-line-clamp: 3;
  }

  /* フィルターボタン */
  .blog-filter-wrap {
    gap: 0.4rem;
    flex-wrap: wrap;
  }
  .filter-btn {
    font-size: 0.78rem;
    padding: 0.35rem 0.9rem;
  }

  /* テーブル横スクロール */
  .article-wrap table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 0.82rem;
  }
  .article-wrap table th,
  .article-wrap table td {
    padding: 0.6rem 0.7rem !important;
    white-space: nowrap;
  }

  /* 関連記事ボックス */
  .article-wrap [style*="display:flex"][style*="gap:1.5rem"] {
    flex-direction: column;
    gap: 0.8rem !important;
  }
}

@media (max-width: 480px) {
  .article-hero {
    min-height: 220px;
  }
  .article-hero h1 {
    font-size: 1.1rem !important;
  }
  .article-wrap {
    padding: 1.5rem 0.8rem;
  }
  .action-checklist h3 {
    font-size: 1rem;
  }
}