/* ===========================================================
   商品詳細ページ専用スタイル
   共通デザインシステムに乗せる形でレイアウト
   =========================================================== */

/* ===== 商品ヒーロー：薄背景で品名のみ ===== */
.product-hero {
  position: relative;
  margin-top: 90px;
  padding: clamp(40px, 6vw, 70px) 0 clamp(30px, 4vw, 50px);
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-line);
  text-align: center;
}
.product-hero .label-en { margin-bottom: 14px; }
.product-hero h1 {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: clamp(24px, 3.4vw, 38px);
  letter-spacing: 0.18em;
  line-height: 1.55;
  margin-bottom: 10px;
}
.product-hero .name-fr {
  font-family: var(--font-en);
  font-style: italic;
  font-size: clamp(14px, 1.6vw, 18px);
  letter-spacing: 0.28em;
  color: var(--color-accent);
}

/* ===== メイン2カラム ===== */
.product-main {
  padding: clamp(60px, 8vw, 100px) 0 clamp(40px, 6vw, 70px);
}
.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 6vw, 80px);
  align-items: start;
}
.product-image {
  position: sticky;
  top: 100px;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-bg-alt);
}
.product-image img {
  width: 100%; height: 100%;
  object-fit: cover;
}

/* ===== 商品情報 ===== */
.product-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.product-tag {
  font-family: var(--font-en);
  font-size: 11px;
  letter-spacing: 0.25em;
  padding: 4px 10px;
  border: 1px solid var(--color-line);
  color: var(--color-accent);
}
.product-tag.tag-season { color: var(--color-accent-dk); border-color: var(--color-accent-dk); }
.product-tag.tag-new    { color: var(--color-white); background: var(--color-accent); border-color: var(--color-accent); }

.product-tagline {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: clamp(16px, 1.8vw, 19px);
  letter-spacing: 0.14em;
  color: var(--color-ink);
  margin-bottom: 24px;
  line-height: 1.85;
}
.product-desc {
  color: var(--color-ink-soft);
  font-size: 14px;
  line-height: 2.2;
  margin-bottom: 32px;
  white-space: pre-line;
}

.product-price-block {
  padding: 22px 0;
  border-top: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line);
  margin-bottom: 30px;
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.product-price-block .price {
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-ink);
  font-variant-numeric: lining-nums tabular-nums;
}
.product-price-block .price-note {
  font-size: 12px;
  color: var(--color-ink-soft);
  letter-spacing: 0.08em;
}

.product-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 30px;
}
.product-actions .btn { padding: 16px 28px; }

.product-note {
  background: var(--color-bg-alt);
  padding: 18px 22px;
  font-size: 12px;
  line-height: 1.9;
  color: var(--color-ink-soft);
  border-left: 3px solid var(--color-accent);
}

/* ===== 物語・素材セクション ===== */
.product-story {
  padding: clamp(60px, 8vw, 100px) 0;
  background: var(--color-bg-alt);
  text-align: center;
}
.product-story-text {
  max-width: 680px;
  margin: 30px auto 0;
  color: var(--color-ink-soft);
  font-size: 15px;
  line-height: 2.4;
  letter-spacing: 0.04em;
}

.ingredients-section {
  padding: clamp(60px, 8vw, 100px) 0;
  background: var(--color-bg);
}
.ingredients-header {
  text-align: center;
  margin-bottom: 50px;
}
.ingredients-table {
  max-width: 760px;
  margin: 0 auto;
}
.ingredients-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 28px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-line);
  align-items: baseline;
}
.ingredients-row .label {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: 14px;
  letter-spacing: 0.18em;
  color: var(--color-accent);
}
.ingredients-row .value {
  font-size: 13.5px;
  line-height: 2.1;
  color: var(--color-ink-soft);
}
.ingredients-row .value strong {
  color: var(--color-ink);
  display: block;
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

/* ===== 関連商品 ===== */
.related-section {
  padding: clamp(60px, 8vw, 100px) 0;
  background: var(--color-bg-alt);
}
.related-header {
  text-align: center;
  margin-bottom: 50px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 3vw, 40px);
}
.related-card { display: block; text-align: left; }
.related-card .img {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-bg);
  margin-bottom: 16px;
}
.related-card .img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .8s ease;
}
.related-card:hover .img img { transform: scale(1.05); }
.related-card h3 {
  font-family: var(--font-jp);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.1em;
  line-height: 1.5;
  margin-bottom: 4px;
}
.related-card .fr {
  font-family: var(--font-en);
  font-style: italic;
  font-size: 11px;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
}
.related-card .price {
  font-family: "Inter", "Helvetica Neue", sans-serif;
  font-size: 14px;
  color: var(--color-ink);
  font-variant-numeric: lining-nums tabular-nums;
}

/* ===== 戻るリンク ===== */
.back-cta {
  text-align: center;
  padding: 50px 0 70px;
}

@media (max-width: 900px) {
  .product-grid { grid-template-columns: 1fr; gap: 30px; }
  .product-image { position: static; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .ingredients-row { grid-template-columns: 1fr; gap: 4px; }
}
@media (max-width: 560px) {
  .related-grid { grid-template-columns: 1fr; }
  .product-hero { margin-top: 76px; }
}