/* ==========================================================
   hearing-tech | ブログ固有スタイル (blog.css)
   ・2カラムレイアウト補助 / 記事装飾 / 一覧カードのみ
   ・ヘッダー/フッター/ナビのスタイルは ../styles.css 側に定義
   ========================================================== */

/* ---------- ブログ共通ページヘッダー ---------- */
.blog-pagehead {
  background: var(--teal-deep);
  position: relative;
  overflow: hidden;
}

.blog-pagehead::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 20%, rgba(232, 104, 74, 0.35), transparent 45%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0 8px, transparent 8px 16px);
  pointer-events: none;
}

.blog-pagehead-inner {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.8rem 1.2rem 2.4rem;
}

.blog-pagehead .crumb {
  font-size: 0.78rem;
  color: #ffe3d9;
  margin-bottom: 0.5rem;
}

.blog-pagehead .crumb a {
  color: #ffe3d9;
  text-decoration: none;
}

.blog-pagehead .crumb a:hover {
  text-decoration: underline;
}

.blog-pagehead h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  color: #fff;
  line-height: 1.35;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.45);
}

.blog-pagehead p {
  color: #cfe6ea;
  font-size: 0.92rem;
  margin-top: 0.7rem;
  max-width: 720px;
}

/* ---------- 記事メタ情報バー ---------- */
.blog-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.4rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px dashed var(--line);
}

.blog-date {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--teal);
}

.blog-cat {
  font-size: 0.7rem;
  font-weight: 700;
  color: #fff;
  background: var(--coral);
  border-radius: 4px;
  padding: 0.14rem 0.6rem;
}

.blog-readtime {
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-left: auto;
}

/* ---------- シェアボックス ---------- */
.share-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
  margin: 2.6rem 0 1.4rem;
  padding: 1.1rem 1.2rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.share-label {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--teal-deep);
}

.share-btn {
  display: inline-block;
  padding: 0.4rem 0.95rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  color: #fff;
  transition: var(--transition);
}

.share-btn:hover {
  transform: translateY(-2px);
  opacity: 0.92;
}

.share-x {
  background: #111827;
}

.share-facebook {
  background: #1877f2;
}

/* ---------- 一覧へ戻る ---------- */
.back-to-list {
  display: inline-block;
  margin-top: 0.6rem;
  padding: 0.55rem 1.3rem;
  border: 2px solid var(--teal);
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--teal-deep);
  text-decoration: none;
  transition: var(--transition);
}

.back-to-list:hover {
  background: var(--teal);
  color: #fff;
}

/* ---------- 一覧ページ カードグリッド ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.blog-card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 3px 10px rgba(9, 60, 72, 0.07);
  transition: var(--transition);
}

.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.blog-thumb-link {
  display: block;
  overflow: hidden;
}

.blog-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.blog-card:hover .blog-thumb {
  transform: scale(1.05);
}

.blog-card-body {
  padding: 1rem 1.1rem 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.blog-card-date {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.76rem;
  color: var(--coral);
}

.blog-card-title {
  font-family: var(--font-head);
  font-size: 1.02rem;
  line-height: 1.5;
  margin: 0;
}

.blog-card-title a {
  color: var(--teal-deep);
  text-decoration: none;
}

.blog-card-title a:hover {
  color: var(--teal);
}

.blog-card-summary {
  font-size: 0.83rem;
  color: var(--ink-soft);
  flex: 1;
  margin: 0;
}

.read-more {
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--coral);
  text-decoration: none;
}

.read-more:hover {
  text-decoration: underline;
}

/* ---------- レスポンシブ ---------- */
@media (max-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .blog-readtime {
    margin-left: 0;
    width: 100%;
  }
}

/* Mobile news-commentary readability baseline (shared site-local rule). */
@media (max-width: 768px) {
  .blog-main, .blog-container, .two-col-layout { min-width: 0; }
  .article-detail, .blog-article, .article-body { min-width: 0; }
  .article-detail .article-body, .blog-article { padding-inline: 16px; }
  .article-content {
    font-size: 1rem;
    line-height: 1.85;
    overflow-wrap: anywhere;
  }
  .article-content h2 { font-size: clamp(1.25rem, 6vw, 1.45rem); line-height: 1.4; }
  .article-content h3 { font-size: clamp(1.12rem, 5vw, 1.25rem); line-height: 1.45; }
  .article-content :is(img, iframe, video) { max-width: 100%; height: auto; }
  .article-content table { display: block; max-width: 100%; overflow-x: auto; }
  .sidebar, .blog-sidebar { position: static; order: 2; }
}
/* Mobile article reading width: keep outer page gutters, remove duplicated inner gutters. */
@media (max-width: 768px) {
  .article-content,
  .article-detail .article-body,
  .blog-article,
  .main-content > article.main-content {
    padding-left: 0;
    padding-right: 0;
  }
  /* Cap article-panel padding without removing deliberate card framing. */
  .article-panel,
  .article-main,
  .post-content,
  .article-detail {
    padding-left: min(16px, 4vw);
    padding-right: min(16px, 4vw);
  }
  .article-body { padding-left: 0; padding-right: 0; }
}