/* ============================================================
   THE iLLON Blog スタイル
   common.css のデザイントークン(--color-* / --font-*)を継承。
   /blog 一覧・/blog/[slug] 詳細で使用。既存サイトのトーンに一致させる。
   ============================================================ */

.blog {
  --blog-measure: 720px;        /* 記事本文の読みやすい横幅 */
  color: var(--color-black);
  background: var(--color-bg);
}

/* 固定ヘッダー(.header--solid ≈ 56px)を避ける上部余白 */
.blog-wrap {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 128px 40px 40px;
}
.blog-wrap--article {
  max-width: calc(var(--blog-measure) + 80px);
}

/* ---------- パンくず ---------- */
.breadcrumb {
  margin: 0 0 28px;
}
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-jp-body);
  font-size: 12px;
  color: var(--color-light-grey);
  letter-spacing: 0.02em;
}
.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
}
.breadcrumb__item:not(:last-child)::after {
  content: '/';
  color: var(--color-border);
}
.breadcrumb__link {
  color: var(--color-grey);
  text-decoration: none;
  transition: color 0.3s;
}
.breadcrumb__link:hover { color: var(--color-accent); }
.breadcrumb__item [aria-current='page'] { color: var(--color-black); }

/* ---------- 一覧ヘッダー ---------- */
.blog-head {
  text-align: center;
  margin: 8px 0 56px;
}
.blog-head__label {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.blog-head__title {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: clamp(38px, 6vw, 60px);
  letter-spacing: 0.08em;
  line-height: 1.1;
  color: var(--color-black);
}
.blog-head__desc {
  margin-top: 18px;
  font-family: var(--font-jp-body);
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-grey);
}

/* ---------- 一覧グリッド ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 48px 32px;
}
.blog-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  group: card;
}
.blog-card__thumb {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--color-bg-alt);
  margin-bottom: 18px;
}
.blog-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.blog-card:hover .blog-card__thumb img { transform: scale(1.04); }

/* アイキャッチ未設定時のカテゴリ表紙（サムネ代わり・目的別に色分け） */
.blog-card__cover {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--color-bg-warm);
  transition: transform 0.6s ease;
}
.blog-card:hover .blog-card__cover { transform: scale(1.03); }
.blog-card__cover picture { display: block; line-height: 0; }
.blog-card__cover img.blog-card__cover-logo {
  width: 160px;
  max-width: 58%;
  height: auto;
  object-fit: contain;
  display: block;
  opacity: 0.9;
}
/* カテゴリ表紙の色味は iLLON のトンマナ（暖色ニュートラル×ゴールド）で統一。
   4分類は同系統の中で温度・濃淡だけを変えて上品に差をつける。 */
.blog-card__cover[data-cat='ingredients'] { background: #f3efe6; } /* 温かいサンド */
.blog-card__cover[data-cat='concern'] { background: #f6ece4; }     /* 淡いブラッシュベージュ */
.blog-card__cover[data-cat='howto'] { background: #efeae0; }       /* グレージュ */
.blog-card__cover[data-cat='concept'] { background: #f2e7d4; }     /* ゴールドクリーム（アクセント寄り） */

/* 目的別フィルター（PRODUCTS の物販/業務トグルと同じセグメント型） */
.blog-filter {
  display: flex;
  justify-content: center;
  margin: 0 0 48px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.blog-filter::-webkit-scrollbar { display: none; }
.blog-filter__inner {
  display: inline-flex;
  flex: 0 0 auto;
  margin: 0 auto;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-bg-alt);
  padding: 4px;
}
.blog-filter__chip {
  appearance: none;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  padding: 10px 26px;
  border-radius: 999px;
  font-family: var(--font-jp-display);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-grey);
  white-space: nowrap;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.blog-filter__sub {
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.7;
}
.blog-filter__chip:hover { color: var(--color-black); }
.blog-filter__chip.is-active {
  background: var(--color-bg-dark, #1a1a1a);
  color: #fff;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}
/* 狭い画面：サブラベルを隠して詰め、5つ収める（入り切らなければ横スクロール） */
@media (max-width: 600px) {
  .blog-filter { justify-content: flex-start; padding-bottom: 4px; }
  .blog-filter__chip { padding: 8px 11px; font-size: 13px; letter-spacing: 0.02em; }
  .blog-filter__sub { display: none; }
}
.blog-card.is-hidden { display: none; }
/* カテゴリタグ（日本語のみ・カテゴリごとにアクセントカラーで色分け） */
.blog-card__cat {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-jp-body);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 5px 14px;
  border-radius: 4px;
  margin-bottom: 12px;
}
.blog-card__cat[data-cat='ingredients'] { color: #5f6e46; background: #edf1e4; }
.blog-card__cat[data-cat='concern']     { color: #a86a5c; background: #f7ebe4; }
.blog-card__cat[data-cat='howto']       { color: #5e6f7c; background: #e9eef2; }
.blog-card__cat[data-cat='concept']     { color: #9a7530; background: #f4ecd7; }
.blog-card__date {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--color-light-grey);
  margin-bottom: 8px;
}
.blog-card__title {
  font-family: var(--font-jp-display);
  font-weight: 500;
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-black);
  transition: color 0.3s;
}
.blog-card:hover .blog-card__title { color: var(--color-accent); }
.blog-card__excerpt {
  margin-top: 10px;
  font-family: var(--font-jp-body);
  font-size: 13px;
  line-height: 1.85;
  color: var(--color-grey);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 記事が無いとき */
.blog-empty {
  text-align: center;
  padding: 80px 0;
  font-family: var(--font-jp-body);
  color: var(--color-light-grey);
  font-size: 14px;
}

/* ---------- 記事ヘッダー ---------- */
.article-head {
  max-width: var(--blog-measure);
  margin: 0 auto 40px;
  text-align: center;
}
.article-head__cat {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 18px;
}
.article-head__title {
  font-family: var(--font-jp-display);
  font-weight: 600;
  font-size: clamp(26px, 4.4vw, 38px);
  line-height: 1.5;
  letter-spacing: 0.01em;
  color: var(--color-black);
}
.article-head__meta {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 22px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--color-light-grey);
}
.article-head__meta time { color: var(--color-grey); }
.article-head__tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.article-head__tag {
  font-family: var(--font-jp-body);
  font-size: 11px;
  color: var(--color-grey);
  background: var(--color-bg-alt);
  padding: 4px 12px;
  border-radius: 2px;
}
.article-eyecatch {
  margin: 40px 0 48px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-bg-alt);
}
.article-eyecatch img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 記事本文プロース ---------- */
.article-body {
  max-width: var(--blog-measure);
  margin: 0 auto;
  font-family: var(--font-jp-body);
  font-weight: 400;
  font-size: 16.5px;
  line-height: 1.9;
  color: #2b2b2b;
  letter-spacing: 0.03em;
  word-break: break-word;
  overflow-wrap: anywhere;
  counter-reset: sec;
}
.article-body > *:first-child { margin-top: 0; }
/* リード文（書き出しの1段落）を少し大きく・濃く */
.article-body > p:first-of-type {
  font-size: 18px;
  line-height: 1.95;
  color: var(--color-black);
  margin-bottom: 30px;
}
.article-body h2 {
  counter-increment: sec;
  font-family: var(--font-jp-display);
  font-weight: 600;
  font-size: 24px;
  line-height: 1.5;
  color: var(--color-black);
  margin: 66px 0 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}
/* セクション番号（01・02…）で構造を可視化 */
.article-body h2::before {
  content: counter(sec, decimal-leading-zero);
  display: block;
  font-family: var(--font-num);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  margin-bottom: 10px;
}
.article-body h3 {
  font-family: var(--font-jp-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.6;
  color: var(--color-black);
  margin: 44px 0 16px;
  padding-left: 14px;
  border-left: 3px solid var(--color-accent);
}
.article-body h4 {
  font-family: var(--font-jp-body);
  font-weight: 700;
  font-size: 16px;
  color: var(--color-black);
  margin: 32px 0 12px;
}
.article-body p { margin: 0 0 26px; }
.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: opacity 0.3s;
}
.article-body a:hover { opacity: 0.65; }
.article-body strong {
  font-weight: 700;
  color: var(--color-black);
  background-image: linear-gradient(transparent 62%, rgba(184, 151, 106, 0.24) 62%);
}
.article-body em { font-style: italic; }

.article-body ul,
.article-body ol {
  margin: 0 0 26px;
  padding-left: 1.5em;
}
.article-body li { margin-bottom: 10px; }
.article-body ul > li { list-style: none; position: relative; }
.article-body ul > li::before {
  content: '';
  position: absolute;
  left: -1.1em;
  top: 0.85em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}
.article-body ol { list-style: decimal; }
.article-body ol > li::marker { color: var(--color-accent); font-family: var(--font-num); }

.article-body blockquote {
  margin: 34px 0;
  padding: 20px 26px;
  background: var(--color-bg-alt);
  border-left: 3px solid var(--color-accent);
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-grey);
}
.article-body blockquote p:last-child { margin-bottom: 0; }

.article-body img,
.article-body figure img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 34px auto;
}
.article-body figure { margin: 34px 0; }
.article-body figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 12px;
  color: var(--color-light-grey);
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 48px 0;
}

.article-body code {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.88em;
  background: var(--color-bg-warm);
  padding: 2px 6px;
  border-radius: 3px;
}
.article-body pre {
  margin: 30px 0;
  padding: 20px;
  background: var(--color-bg-dark);
  color: #f2f2f2;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.7;
}
.article-body pre code { background: transparent; padding: 0; color: inherit; }

/* 表：横スクロールで崩れ防止 */
.article-body .table-scroll { overflow-x: auto; margin: 30px 0; }
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.7;
}
.article-body th,
.article-body td {
  border: 1px solid var(--color-border);
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
}
.article-body thead th,
.article-body th {
  background: var(--color-bg-warm);
  font-weight: 700;
  color: var(--color-black);
  border-bottom: 2px solid var(--color-accent);
}
/* ゼブラで行を追いやすく */
.article-body tbody tr:nth-child(even) td {
  background: rgba(184, 151, 106, 0.05);
}

/* ---------- おすすめ商品カード（本文内・画像つき） ---------- */
.article-body .article-product {
  display: flex;
  gap: 24px;
  align-items: center;
  margin: 44px 0;
  padding: 24px 26px;
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  border-radius: 10px;
}
.article-body .article-product__media {
  flex: 0 0 128px;
  width: 128px;
}
.article-body .article-product__media img {
  width: 100%;
  height: auto;
  margin: 0;
  display: block;
}
.article-body .article-product__body { flex: 1 1 auto; min-width: 0; }
.article-body .article-product__label {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 8px;
}
.article-body .article-product__name {
  font-family: var(--font-jp-display);
  font-weight: 600;
  font-size: 17px;
  line-height: 1.5;
  color: var(--color-black);
  margin: 0 0 10px;
}
.article-body .article-product__text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-grey);
  margin: 0 0 18px;
}
.article-body .article-product__btn {
  display: inline-block;
  background: var(--color-black);
  color: #fff;
  text-decoration: none;
  font-family: var(--font-jp-body);
  font-size: 13px;
  letter-spacing: 0.02em;
  padding: 11px 26px;
  border-radius: 999px;
  transition: opacity 0.3s;
}
.article-body .article-product__btn:hover { opacity: 0.78; }
@media (max-width: 600px) {
  .article-body .article-product {
    flex-direction: column;
    text-align: center;
    gap: 18px;
    padding: 24px 20px;
  }
  .article-body .article-product__media { width: 150px; flex-basis: auto; }
}

/* ---------- 記事下部CTA ---------- */
.blog-cta {
  max-width: var(--blog-measure);
  margin: 72px auto 0;
  padding: 48px 40px;
  text-align: center;
  background: var(--color-bg-warm);
  border-radius: 4px;
}
.blog-cta__label {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}
.blog-cta__heading {
  font-family: var(--font-jp-display);
  font-weight: 600;
  font-size: 22px;
  color: var(--color-black);
  margin-bottom: 14px;
}
.blog-cta__text {
  font-family: var(--font-jp-body);
  font-size: 14px;
  line-height: 1.9;
  color: var(--color-grey);
  margin-bottom: 28px;
}
.blog-cta__buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}
/* 記事内CTAではボタンをやや小さく */
.blog-cta .btn-primary,
.blog-cta .btn-outline { padding: 15px 40px; font-size: 11px; }

/* 関連商品リンク（microCMS relatedProducts） */
.related-products {
  margin-bottom: 36px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
}
.related-products__label {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.related-products__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.related-products__link {
  display: inline-block;
  font-family: var(--font-jp-body);
  font-size: 13px;
  color: var(--color-black);
  text-decoration: none;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 10px 22px;
  transition: border-color 0.3s, color 0.3s;
}
.related-products__link:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ---------- 関連記事 ---------- */
.related {
  max-width: var(--content-width);
  margin: 80px auto 0;
}
.related__title {
  text-align: center;
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 26px;
  letter-spacing: 0.12em;
  color: var(--color-black);
  margin-bottom: 40px;
}

/* ---------- 一覧に戻る ---------- */
.blog-back {
  max-width: var(--blog-measure);
  margin: 56px auto 0;
  text-align: center;
}
.blog-back a {
  font-family: var(--font-en);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-grey);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 4px;
  transition: color 0.3s, border-color 0.3s;
}
.blog-back a:hover { color: var(--color-accent); border-color: var(--color-accent); }

/* ============================================================
   レスポンシブ
   ============================================================ */
@media (max-width: 900px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 24px; }
}
@media (max-width: 768px) {
  .blog-wrap { padding: 100px 20px 24px; }
  .blog-grid { grid-template-columns: 1fr; gap: 36px; }
  .article-body { font-size: 15.5px; line-height: 1.95; }
  .article-body h2 { font-size: 21px; margin-top: 48px; }
  .article-body h3 { font-size: 17px; margin-top: 36px; }
  .blog-cta { padding: 40px 24px; }
  .blog-cta__buttons { flex-direction: column; }
  .blog-cta .btn-primary,
  .blog-cta .btn-outline { width: 100%; }
}