/* Phase 4 — Product details experience */
body.storefront-foundation-v1 .site-main:has(.product-v4){padding-top:10px}
.product-v4{--pdp-border:var(--ui-border);--pdp-surface:var(--ui-surface);--pdp-soft:var(--ui-surface-subtle);color:var(--ui-text)}
.product-v4 a{text-decoration:none}
.product-v4-shell{width:100%;max-width:1160px;margin:0 auto}
.product-v4-breadcrumb{min-height:40px;display:flex;align-items:center;gap:6px;overflow:hidden;color:var(--ui-muted);font-size:12px;white-space:nowrap}
.product-v4-breadcrumb a{color:var(--ui-muted);transition:color var(--ui-transition)}
.product-v4-breadcrumb a:hover{color:var(--ui-text)}
.product-v4-breadcrumb>span:last-child{min-width:0;overflow:hidden;text-overflow:ellipsis;color:var(--ui-text-soft)}
.product-v4-breadcrumb .ui-icon{opacity:.55}

.product-v4-hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(390px,.95fr);gap:48px;align-items:start;padding:22px 0 46px}
.product-v4-gallery{min-width:0;position:sticky;top:96px}
.product-v4-media-stage{position:relative;aspect-ratio:1/1;overflow:hidden;border:1px solid var(--pdp-border);border-radius:18px;background:var(--ui-surface-muted)}
.product-v4-media-stage>img{display:block;width:100%;height:100%;object-fit:cover;transition:opacity 140ms ease,transform 220ms ease}
.product-v4-media-stage.is-switching>img{opacity:.35}
.product-v4-media-badges{position:absolute;top:14px;left:14px;right:14px;display:flex;align-items:center;justify-content:space-between;gap:10px;pointer-events:none}
.product-v4-media-badges span,.product-v4-media-badges strong{display:inline-flex;align-items:center;min-height:30px;padding:6px 9px;border-radius:8px;background:rgba(255,255,255,.94);border:1px solid rgba(17,19,24,.08);box-shadow:0 2px 8px rgba(17,19,24,.05);color:#111318;font-size:11px;font-weight:700;letter-spacing:.01em}
.product-v4-media-badges strong{margin-left:auto;background:#111318;color:#fff;border-color:#111318}
.product-v4-zoom{position:absolute;right:14px;bottom:14px;width:40px;height:40px;display:grid;place-items:center;border:1px solid rgba(17,19,24,.10);border-radius:10px;background:rgba(255,255,255,.94);color:#111318;box-shadow:0 4px 14px rgba(17,19,24,.08);cursor:pointer}
.product-v4-zoom:hover{background:#fff}
.product-v4-thumbs{display:flex;gap:9px;margin-top:10px;overflow-x:auto;padding:1px 1px 4px;scrollbar-width:none}
.product-v4-thumbs::-webkit-scrollbar{display:none}
.product-v4-thumb{width:70px;height:70px;flex:0 0 70px;padding:0;overflow:hidden;border:1px solid var(--pdp-border);border-radius:11px;background:var(--pdp-surface);cursor:pointer;opacity:.7;transition:border-color var(--ui-transition),opacity var(--ui-transition),box-shadow var(--ui-transition)}
.product-v4-thumb:hover{opacity:1}
.product-v4-thumb.is-active{border-color:var(--ui-text);opacity:1;box-shadow:0 0 0 1px var(--ui-text)}
.product-v4-thumb img{display:block;width:100%;height:100%;object-fit:cover}

.product-v4-summary{min-width:0;padding-top:4px}
.product-v4-kicker-row{min-height:28px;display:flex;align-items:center;gap:10px;margin-bottom:12px}
.product-v4-category{display:inline-flex;align-items:center;min-height:28px;padding:5px 9px;border-radius:7px;background:var(--ui-surface-muted);color:var(--ui-text-soft);font-size:11px;font-weight:700}
.product-v4-rating{margin-left:auto;display:inline-flex;align-items:center;gap:5px;color:var(--ui-muted);font-size:12px;font-weight:650}
.product-v4-rating b{color:#d28a00;font-size:13px}
.product-v4-summary h1{margin:0;max-width:700px;color:var(--ui-text);font-size:clamp(30px,3vw,44px);font-weight:700;line-height:1.12;letter-spacing:-.045em}
html[lang="bn"] .product-v4-summary h1{letter-spacing:-.025em;line-height:1.25}
.product-v4-short{margin-top:18px;color:var(--ui-text-soft);font-size:15px;line-height:1.75}
.product-v4-short>:first-child{margin-top:0}.product-v4-short>:last-child{margin-bottom:0}
.product-v4-short p{margin:0 0 10px}
.product-v4-short ul,.product-v4-short ol{margin:10px 0;padding-left:22px}

.product-v4-price-block{margin-top:22px;padding:18px 0;border-top:1px solid var(--pdp-border);border-bottom:1px solid var(--pdp-border)}
.product-v4-price-line{display:flex;align-items:baseline;flex-wrap:wrap;gap:10px}
.product-v4-price-line strong{font-size:32px;line-height:1;font-weight:720;letter-spacing:-.04em}
.product-v4-price-line del{color:var(--ui-muted);font-size:16px;font-weight:550}
.product-v4-price-line span{display:inline-flex;align-items:center;min-height:26px;padding:4px 8px;border-radius:7px;background:var(--ui-success-soft);color:var(--ui-success);font-size:11px;font-weight:750}
.product-v4-price-block>p{margin:9px 0 0;color:var(--ui-muted);font-size:12px;line-height:1.55}

.product-v4-countdown{margin-top:16px;padding:14px;border:1px solid var(--ui-primary-border);border-radius:12px;background:var(--ui-primary-soft)}
.product-v4-countdown>div:first-child{display:flex;align-items:flex-start;gap:10px}
.product-v4-countdown>div:first-child>span{width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;border-radius:8px;background:var(--ui-surface);color:var(--ui-primary)}
.product-v4-countdown p{margin:0}.product-v4-countdown p strong{display:block;font-size:13px}.product-v4-countdown p small{display:block;margin-top:2px;color:var(--ui-muted);font-size:11px;line-height:1.45}
.product-v4-countdown-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;margin-top:12px}
.product-v4-countdown-grid>span{min-width:0;padding:8px 6px;border:1px solid var(--ui-primary-border);border-radius:8px;background:var(--ui-surface);text-align:center}
.product-v4-countdown-grid b{display:block;font-size:17px;line-height:1.1;font-variant-numeric:tabular-nums}.product-v4-countdown-grid small{display:block;margin-top:4px;color:var(--ui-muted);font-size:9px;text-transform:uppercase;letter-spacing:.05em}

.product-v4-status{display:flex;align-items:flex-start;gap:11px;margin-top:16px;padding:13px 14px;border:1px solid var(--pdp-border);border-radius:11px;background:var(--pdp-soft)}
.product-v4-status>span{width:30px;height:30px;flex:0 0 30px;display:grid;place-items:center;border-radius:8px;background:var(--ui-surface)}
.product-v4-status.is-available>span{color:var(--ui-success)}.product-v4-status.is-unavailable>span{color:var(--ui-danger)}
.product-v4-status strong{display:block;font-size:13px}.product-v4-status small{display:block;margin-top:3px;color:var(--ui-muted);font-size:11px;line-height:1.55}

.product-v4-purchase{margin-top:18px}
.product-v4-quantity{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}
.product-v4-quantity>span{color:var(--ui-text-soft);font-size:12px;font-weight:650}
.product-v4-quantity>div{height:38px;display:flex;align-items:center;border:1px solid var(--ui-border-strong);border-radius:9px;background:var(--ui-surface);overflow:hidden}
.product-v4-quantity button{width:36px;height:36px;border:0;background:transparent;color:var(--ui-text);cursor:pointer;font-size:18px}
.product-v4-quantity button:hover{background:var(--ui-surface-muted)}
.product-v4-quantity input{width:45px;height:36px;padding:0;border:0;border-left:1px solid var(--pdp-border);border-right:1px solid var(--pdp-border);background:transparent;color:var(--ui-text);text-align:center;-moz-appearance:textfield}
.product-v4-quantity input::-webkit-inner-spin-button,.product-v4-quantity input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
.product-v4-actions{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.9fr);gap:9px}
.product-v4-buy,.product-v4-cart,.product-v4-disabled{min-height:50px;width:100%;display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:11px 16px;border-radius:10px;font-size:13px;font-weight:720;transition:opacity var(--ui-transition),background var(--ui-transition),border-color var(--ui-transition),transform var(--ui-transition)}
.product-v4-buy{border:1px solid var(--ui-primary);background:var(--ui-primary);color:#fff}.product-v4-buy:hover{opacity:.92;color:#fff}
.product-v4-cart{border:1px solid var(--ui-border-strong);background:var(--ui-surface);color:var(--ui-text);cursor:pointer}.product-v4-cart:hover{background:var(--ui-surface-muted)}
.product-v4-actions form{margin:0}
.product-v4-disabled{grid-column:1/-1;border:1px solid var(--pdp-border);background:var(--ui-surface-muted);color:var(--ui-muted);cursor:not-allowed}

.product-v4-assurance{display:grid;grid-template-columns:repeat(3,1fr);margin-top:18px;border:1px solid var(--pdp-border);border-radius:12px;overflow:hidden;background:var(--ui-surface)}
.product-v4-assurance>div{min-width:0;display:flex;align-items:flex-start;gap:8px;padding:12px 11px;border-right:1px solid var(--pdp-border)}
.product-v4-assurance>div:last-child{border-right:0}
.product-v4-assurance>div>span{margin-top:1px;color:var(--ui-muted)}
.product-v4-assurance p{min-width:0;margin:0}.product-v4-assurance strong{display:block;font-size:10.5px;line-height:1.4}.product-v4-assurance small{display:block;margin-top:2px;color:var(--ui-muted);font-size:9.5px;line-height:1.4}

.product-v4-details-grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:24px;padding:44px 0;border-top:1px solid var(--pdp-border)}
.product-v4-description,.product-v4-process{min-width:0;border:1px solid var(--pdp-border);border-radius:15px;background:var(--pdp-surface)}
.product-v4-description{padding:28px}
.product-v4-description header>span,.product-v4-section-label,.product-v4-related-head>div>span{display:block;margin-bottom:6px;color:var(--ui-muted);font-size:10px;font-weight:750;text-transform:uppercase;letter-spacing:.1em}
.product-v4-description h2,.product-v4-process h2,.product-v4-related-head h2{margin:0;color:var(--ui-text);font-size:24px;font-weight:690;letter-spacing:-.03em}
.product-v4-rich{margin-top:22px;color:var(--ui-text-soft);font-size:14px;line-height:1.78;overflow-wrap:anywhere}
.product-v4-rich>:first-child{margin-top:0}.product-v4-rich>:last-child{margin-bottom:0}
.product-v4-rich h1,.product-v4-rich h2,.product-v4-rich h3,.product-v4-rich h4{margin:26px 0 10px;color:var(--ui-text);line-height:1.3;letter-spacing:-.02em}
.product-v4-rich h1{font-size:26px}.product-v4-rich h2{font-size:22px}.product-v4-rich h3{font-size:18px}.product-v4-rich h4{font-size:16px}
.product-v4-rich p{margin:0 0 14px}.product-v4-rich ul,.product-v4-rich ol{margin:14px 0;padding-left:22px}.product-v4-rich li{margin:7px 0}
.product-v4-rich img{display:block;max-width:100%;height:auto;margin:18px auto;border-radius:10px}.product-v4-rich table{width:100%;border-collapse:collapse;margin:18px 0;font-size:13px}.product-v4-rich th,.product-v4-rich td{padding:10px;border:1px solid var(--pdp-border);text-align:left}.product-v4-rich blockquote{margin:18px 0;padding:2px 0 2px 14px;border-left:3px solid var(--ui-primary);color:var(--ui-muted)}
.product-v4-empty-copy{margin:22px 0 0;color:var(--ui-muted);font-size:14px;line-height:1.7}
.product-v4-process{padding:24px;align-self:start}
.product-v4-process h2{font-size:21px}
.product-v4-process ol{list-style:none;padding:0;margin:22px 0 0}
.product-v4-process li{display:grid;grid-template-columns:34px 1fr;gap:10px;padding:0 0 18px;position:relative}
.product-v4-process li:not(:last-child)::after{content:"";position:absolute;left:16px;top:34px;bottom:0;width:1px;background:var(--pdp-border)}
.product-v4-process li>b{width:34px;height:34px;display:grid;place-items:center;position:relative;z-index:1;border:1px solid var(--pdp-border);border-radius:9px;background:var(--ui-surface);color:var(--ui-muted);font-size:9px;letter-spacing:.04em}
.product-v4-process li strong{display:block;padding-top:2px;font-size:12px}.product-v4-process li small{display:block;margin-top:4px;color:var(--ui-muted);font-size:10.5px;line-height:1.55}
.product-v4-process-link{min-height:42px;display:flex;align-items:center;justify-content:center;gap:7px;margin-top:2px;border:1px solid var(--ui-border-strong);border-radius:9px;color:var(--ui-text);font-size:12px;font-weight:680}.product-v4-process-link:hover{background:var(--ui-surface-muted)}.product-v4-process-link.is-disabled{opacity:.45;pointer-events:none}

.product-v4-related{padding:2px 0 54px}
.product-v4-related-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:18px}
.product-v4-related-head h2{font-size:25px}
.product-v4-related-head>a{display:inline-flex;align-items:center;gap:5px;color:var(--ui-text-soft);font-size:12px;font-weight:650}
.product-v4-related-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.product-v4-related-card{min-width:0;overflow:hidden;border:1px solid var(--pdp-border);border-radius:13px;background:var(--pdp-surface);transition:border-color var(--ui-transition),transform var(--ui-transition),box-shadow var(--ui-transition)}
.product-v4-related-card:hover{transform:translateY(-2px);border-color:var(--ui-border-strong);box-shadow:var(--ui-shadow-sm)}
.product-v4-related-media{display:block;position:relative;aspect-ratio:1/1;overflow:hidden;background:var(--ui-surface-muted)}
.product-v4-related-media img{width:100%;height:100%;display:block;object-fit:cover;transition:transform 220ms ease}.product-v4-related-card:hover .product-v4-related-media img{transform:scale(1.02)}
.product-v4-related-media>span{position:absolute;top:9px;right:9px;min-height:25px;padding:4px 7px;border-radius:7px;background:#111318;color:#fff;font-size:10px;font-weight:750}
.product-v4-related-card>div{padding:13px}.product-v4-related-card small{display:block;color:var(--ui-muted);font-size:10px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.product-v4-related-card h3{margin:6px 0 12px;font-size:13px;line-height:1.4;font-weight:650}.product-v4-related-card h3 a{display:-webkit-box;overflow:hidden;color:var(--ui-text);-webkit-box-orient:vertical;-webkit-line-clamp:2}
.product-v4-related-bottom{display:flex;align-items:center;justify-content:space-between;gap:10px}.product-v4-related-bottom p{min-width:0;margin:0;display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}.product-v4-related-bottom strong{font-size:15px}.product-v4-related-bottom del{color:var(--ui-muted);font-size:10px}.product-v4-related-bottom>a{width:31px;height:31px;flex:0 0 31px;display:grid;place-items:center;border:1px solid var(--pdp-border);border-radius:8px;color:var(--ui-text)}

.product-v4-mobile-bar{display:none}
.product-v4-lightbox{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:34px;background:rgba(8,10,14,.86);opacity:0;visibility:hidden;transition:opacity 160ms ease,visibility 160ms ease}
.product-v4-lightbox.is-open{opacity:1;visibility:visible}
.product-v4-lightbox>img{max-width:min(92vw,1100px);max-height:88vh;object-fit:contain;border-radius:10px;background:#fff}
.product-v4-lightbox>button{position:absolute;top:20px;right:20px;width:42px;height:42px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.25);border-radius:10px;background:rgba(255,255,255,.1);color:#fff;cursor:pointer}
body.product-lightbox-open{overflow:hidden}

html[data-theme="dark"] .product-v4-media-badges span{background:rgba(21,24,30,.94);border-color:rgba(255,255,255,.08);color:#f7f8fa}
html[data-theme="dark"] .product-v4-zoom{background:rgba(21,24,30,.94);border-color:rgba(255,255,255,.08);color:#f7f8fa}
html[data-theme="dark"] .product-v4-media-badges strong{background:#f7f8fa;color:#111318;border-color:#f7f8fa}

@media(max-width:1020px){
  .product-v4-hero{grid-template-columns:minmax(0,1fr) minmax(350px,.95fr);gap:30px}
  .product-v4-gallery{position:static}
  .product-v4-details-grid{grid-template-columns:minmax(0,1fr) 310px}
  .product-v4-assurance{grid-template-columns:1fr}.product-v4-assurance>div{border-right:0;border-bottom:1px solid var(--pdp-border)}.product-v4-assurance>div:last-child{border-bottom:0}
}

@media(max-width:820px){
  body.storefront-foundation-v1 .site-main:has(.product-v4){padding-top:4px;padding-bottom:86px}
  .product-v4-shell{max-width:720px}
  .product-v4-breadcrumb{padding:2px 0 5px}
  .product-v4-hero{display:block;padding:10px 0 34px}
  .product-v4-summary{padding-top:22px}
  .product-v4-summary h1{font-size:32px}
  .product-v4-details-grid{grid-template-columns:1fr;padding:34px 0;gap:14px}
  .product-v4-process{order:-1}
  .product-v4-related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .product-v4-mobile-bar{position:fixed;z-index:56;left:0;right:0;bottom:0;min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:10px max(14px,env(safe-area-inset-right)) calc(10px + env(safe-area-inset-bottom)) max(14px,env(safe-area-inset-left));border-top:1px solid var(--pdp-border);background:rgba(255,255,255,.96);box-shadow:0 -8px 24px rgba(17,24,39,.08);backdrop-filter:blur(14px);transform:translateY(110%);transition:transform 190ms ease}
  html[data-theme="dark"] .product-v4-mobile-bar{background:rgba(21,24,30,.96)}
  .product-v4-mobile-bar.is-visible{transform:translateY(0)}
  .product-v4-mobile-bar>div{min-width:0;display:flex;align-items:baseline;gap:6px;flex-wrap:wrap}.product-v4-mobile-bar small{width:100%;color:var(--ui-muted);font-size:9px}.product-v4-mobile-bar strong{font-size:18px;line-height:1}.product-v4-mobile-bar del{color:var(--ui-muted);font-size:10px}.product-v4-mobile-bar>a{min-height:46px;display:inline-flex;align-items:center;justify-content:center;gap:7px;padding:10px 16px;border-radius:9px;background:var(--ui-primary);color:#fff;font-size:12px;font-weight:720;white-space:nowrap}
  body.storefront-foundation-v1 .support-fab{bottom:88px}
}

@media(max-width:560px){
  .product-v4-breadcrumb{font-size:10px}
  .product-v4-breadcrumb>span:last-child{display:none}
  .product-v4-media-stage{border-radius:13px}
  .product-v4-media-badges{top:10px;left:10px;right:10px}.product-v4-media-badges span,.product-v4-media-badges strong{min-height:27px;padding:5px 7px;border-radius:7px;font-size:9px}
  .product-v4-zoom{right:10px;bottom:10px;width:36px;height:36px;border-radius:8px}
  .product-v4-thumbs{gap:7px;margin-top:8px}.product-v4-thumb{width:58px;height:58px;flex-basis:58px;border-radius:9px}
  .product-v4-summary{padding-top:18px}.product-v4-kicker-row{margin-bottom:10px}.product-v4-summary h1{font-size:27px;line-height:1.18}.product-v4-short{margin-top:13px;font-size:13px;line-height:1.7}
  .product-v4-price-block{margin-top:17px;padding:15px 0}.product-v4-price-line strong{font-size:28px}.product-v4-price-line del{font-size:14px}
  .product-v4-countdown-grid b{font-size:15px}.product-v4-countdown-grid small{font-size:8px}
  .product-v4-status{padding:12px}.product-v4-actions{grid-template-columns:1fr}.product-v4-buy,.product-v4-cart{min-height:48px}
  .product-v4-assurance{margin-top:14px}
  .product-v4-description,.product-v4-process{border-radius:12px}.product-v4-description{padding:20px}.product-v4-process{padding:20px}.product-v4-description h2,.product-v4-related-head h2{font-size:21px}.product-v4-rich{margin-top:18px;font-size:13px}
  .product-v4-related{padding-bottom:38px}.product-v4-related-head{align-items:flex-start}.product-v4-related-head>a{display:none}.product-v4-related-grid{gap:9px}.product-v4-related-card{border-radius:11px}.product-v4-related-card>div{padding:10px}.product-v4-related-card h3{font-size:12px;margin-bottom:9px}.product-v4-related-bottom strong{font-size:14px}.product-v4-related-bottom>a{width:29px;height:29px;flex-basis:29px}
  .product-v4-mobile-bar{min-height:68px;padding-top:9px}.product-v4-mobile-bar>a{min-height:44px;padding-inline:14px}
  .product-v4-lightbox{padding:18px}.product-v4-lightbox>button{top:12px;right:12px}
}