/* =========================================================
   RankCotte - 商品詳細ページ
   ========================================================= */
.breadcrumb { display: flex; flex-wrap: wrap; gap: 6px; font-size: 12px; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb .sep { opacity: .6; }

.detail-top { display: grid; grid-template-columns: 84px minmax(200px, 0.9fr) 1.4fr 320px; gap: 20px; align-items: start; }

/* ---- ギャラリー ---- */
.gallery__thumbs { display: flex; flex-direction: column; gap: 8px; }
.gallery__thumbs img {
  width: 100%; aspect-ratio: 1; object-fit: contain; background: var(--card);
  border: 1px solid var(--border); border-radius: 8px; cursor: pointer;
}
.gallery__thumbs img.is-active { border-color: var(--brand); }
.gallery__main {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; position: relative;
}
.gallery__main img { width: 100%; aspect-ratio: 1; object-fit: contain; }
.gallery__actions { display: flex; justify-content: center; gap: 20px; margin-top: 10px; font-size: 12px; color: var(--muted); }
.gallery__actions span { display: inline-flex; align-items: center; gap: 4px; }

/* ---- 商品情報 ---- */
.pinfo__cat { font-size: 12px; color: var(--brand); font-weight: 700; display: inline-flex; align-items: center; gap: 6px; }
.pinfo__rankbadge {
  display: inline-grid; place-items: center; width: 30px; height: 30px; border-radius: 50%;
  background: var(--gold); color: #fff; font-size: 13px; font-weight: 800; vertical-align: middle;
}
.pinfo__name { font-size: 24px; font-weight: 800; color: var(--text-strong); margin: 8px 0; line-height: 1.4; }
.pinfo__maker { font-size: 13px; color: var(--muted); }
.pinfo__ratingrow { display: flex; align-items: center; gap: 16px; margin: 14px 0; flex-wrap: wrap; }
.pinfo__stars { color: var(--star); font-size: 18px; font-weight: 800; }
.pinfo__stars b { font-size: 20px; }
.pinfo__ratingrow a { font-size: 13px; color: var(--brand); font-weight: 600; }
.pinfo__ratingrow .fav { border: 1px solid var(--border); padding: 6px 14px; border-radius: 8px; color: var(--text); }
.pinfo__desc { font-size: 14px; color: var(--text); margin: 14px 0; line-height: 1.9; }

.spec-icons { display: grid; grid-template-columns: repeat(6,1fr); gap: 8px; margin: 18px 0; }
.spec-icons .si {
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 4px; text-align: center;
  background: var(--card);
}
.spec-icons .si .ic { font-size: 20px; }
.spec-icons .si .t { font-size: 10px; color: var(--muted); margin-top: 4px; line-height: 1.3; }

.info-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 8px; }
.info-row .ir {
  border: 1px solid var(--border); border-radius: 8px; padding: 8px; text-align: center; background: var(--bg);
}
.info-row .ir .k { font-size: 10px; color: var(--muted); }
.info-row .ir .v { font-size: 13px; font-weight: 700; color: var(--text-strong); }

/* ---- サイドバー: 最安値 ---- */
.side-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 20px; box-shadow: var(--shadow); }
.side-card__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.side-card__head h3 { font-size: 15px; font-weight: 800; margin: 0; }
.side-card__head .upd { font-size: 10px; color: var(--muted); }

.offer-row { display: grid; grid-template-columns: 76px 1fr; gap: 10px; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); }
.offer-row:last-child { border-bottom: 0; }
.offer-row .shop { font-weight: 800; font-size: 14px; }
.offer-row .shop.rakuten { color: var(--rakuten); }
.offer-row .shop.amazon  { color: var(--amazon); }
.offer-row .shop.yahoo   { color: var(--yahoo); }
.offer-row .shop.a8      { color: var(--brand); }
.offer-row .price { font-size: 19px; font-weight: 800; color: var(--text-strong); }
.offer-row .meta { font-size: 11px; color: var(--muted); }
.offer-row .go {
  grid-column: 1 / -1; display: block; text-align: center; color: #fff; font-weight: 700;
  font-size: 13px; padding: 8px; border-radius: 8px; margin-top: 4px;
}
.offer-row .go.rakuten { background: var(--rakuten); }
.offer-row .go.amazon  { background: var(--amazon); }
.offer-row .go.yahoo   { background: var(--yahoo); }
.offer-row .go.a8      { background: var(--a8); }
:root[data-theme="dark"] .offer-row .go.a8 { background: #3a4a6b; }

/* ---- 価格推移グラフ ---- */
.chart-tabs { display: flex; gap: 4px; margin-bottom: 8px; }
.chart-tabs button {
  flex: 1; padding: 5px; font-size: 11px; border: 1px solid var(--border); background: var(--card);
  color: var(--muted); border-radius: 6px; font-weight: 600; cursor: pointer;
}
.chart-tabs button.is-active { background: var(--brand); color: #fff; border-color: var(--brand); }
.price-chart .pc-grid { stroke: var(--border); stroke-width: .5; }
.price-chart .pc-ylabel, .price-chart .pc-xlabel { font-size: 7px; fill: var(--muted); }
.price-chart .pc-area { fill: var(--brand); opacity: .12; }
.price-chart .pc-line { fill: none; stroke: var(--brand); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.price-chart .pc-dot { fill: var(--brand); }

/* ---- 評価分布 ---- */
.rating-summary { display: flex; gap: 16px; align-items: center; }
.rating-summary .big { font-size: 40px; font-weight: 800; color: var(--text-strong); line-height: 1; }
.rating-summary .stars { color: var(--star); font-size: 15px; }
.rating-bars { flex: 1; }
.rating-bars .rb { display: flex; align-items: center; gap: 6px; font-size: 11px; margin: 3px 0; }
.rating-bars .rb .lbl { color: var(--star); width: 26px; }
.rating-bars .rb .track { flex: 1; height: 7px; background: var(--bg-alt); border-radius: 4px; overflow: hidden; }
.rating-bars .rb .fill { height: 100%; background: var(--star); }
.rating-bars .rb .pct { width: 34px; text-align: right; color: var(--muted); }

/* ---- 関連商品 / 記事リスト（サイド） ---- */
.mini-list a { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--border); align-items: center; }
.mini-list a:last-child { border-bottom: 0; }
.mini-list img { width: 48px; height: 48px; object-fit: contain; background: var(--bg); border-radius: 6px; }
.mini-list .nm { font-size: 12px; font-weight: 600; line-height: 1.4; }
.mini-list .pr { font-size: 12px; color: var(--rakuten); font-weight: 700; }

/* ---- タブ ---- */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin: 30px 0 20px; overflow-x: auto; }
.tabs a {
  padding: 12px 18px; font-size: 14px; font-weight: 700; color: var(--muted);
  border-bottom: 3px solid transparent; margin-bottom: -2px; white-space: nowrap;
}
.tabs a:hover { color: var(--brand); }
.tabs a.is-active { color: var(--brand); border-bottom-color: var(--brand); }

.detail-section { scroll-margin-top: 130px; margin-bottom: 40px; }
.detail-section > h2 { font-size: 20px; font-weight: 800; color: var(--text-strong); margin: 0 0 16px; }

/* 特徴 */
.feature-hero { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: center; }
.feature-checks { display: grid; gap: 10px; }
.feature-checks li { display: flex; gap: 8px; font-size: 14px; }
.feature-checks li::before { content: "\2705"; }
.feature-hero img { border-radius: var(--radius); border: 1px solid var(--border); }

.md-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin-top: 24px; }
.md-box { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; background: var(--card); }
.md-box h3 { font-size: 15px; font-weight: 800; margin: 0 0 12px; }
.md-box.merit h3 { color: var(--down); }
.md-box.demerit h3 { color: var(--up); }
.md-box.rec h3 { color: var(--brand); }
.md-box li { font-size: 13px; display: flex; gap: 6px; margin: 8px 0; line-height: 1.5; }
.md-box.merit li::before { content: "\2714"; color: var(--down); font-weight: 800; }
.md-box.demerit li::before { content: "\2715"; color: var(--up); font-weight: 800; }
.md-box.rec li::before { content: "\25CE"; color: var(--brand); font-weight: 800; }

/* スペック仕様表（2カラム） */
.spec-full { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-full th, .spec-full td { border: 1px solid var(--border); padding: 11px 14px; text-align: left; }
.spec-full th { background: var(--bg); width: 30%; font-weight: 600; color: var(--muted); }

/* レビュー（詳細） */
.review-card { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; background: var(--card); }
.review-card .stars { color: var(--star); font-weight: 800; }
.review-card .ttl { font-weight: 700; margin: 6px 0; }
.review-card .body { font-size: 13px; color: var(--text); line-height: 1.8; }
.review-card .who { font-size: 11px; color: var(--muted); margin-top: 10px; display: flex; justify-content: space-between; }
.review-list3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }

/* Q&A */
.qa-item { border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; margin-bottom: 10px; background: var(--card); }
.qa-item .q { font-weight: 700; font-size: 14px; display: flex; gap: 8px; }
.qa-item .q::before { content: "Q"; color: var(--brand); font-weight: 800; }
.qa-item .a { font-size: 13px; color: var(--muted); margin-top: 8px; padding-left: 20px; }

@media (max-width: 960px) {
  .detail-top { grid-template-columns: 70px 1fr; }
  .detail-top aside { grid-column: 1 / -1; }
  .feature-hero { grid-template-columns: 1fr; }
  .md-grid, .review-list3 { grid-template-columns: 1fr; }
  .spec-icons { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 640px) {
  .detail-top { grid-template-columns: 1fr; }
  .gallery__thumbs { flex-direction: row; }
  .info-row { grid-template-columns: 1fr 1fr; }
}