/* ============================================================
   GYAANSHALA — STORE PRODUCT PAGE (store_product.php)
   page-specific styles, Task 4 of the 2026-08-29 store-frontend build.

   Ported from the "PRODUCT DETAIL PAGE" section of
   docs/design/artifacts/gyaanshala-store-product.html. Chrome
   (topbar/hdr/nav/ftr/btn/price/eyebrow/gs-wrap) lives in gs-brand.css,
   already linked on every page by includes_top.php -- this file only
   carries what is unique to this page.

   Deliberately NOT linking gs-blocks.css (verbatim, unscoped-beyond-.gsx
   copy of an older artifact dump that redeclares .gsx .btn/.gsx .pcard/
   .gsx .art with different values than gs-brand.css) -- same reasoning as
   gs-page-storecollection.css. The "frequently bought together" card here
   uses `.prod-card` (Task 3's naming, redeclared locally since this page
   doesn't link gs-page-storecollection.css either -- each page-specific
   stylesheet is self-contained by this build's own convention).

   Grepped gs-brand.css before writing this file for every top-level class
   name used below (pill, stockline, qty, buyrow, fbt, tabnav, tsec, prose,
   opt, pairs, usp, safety, spectable, crumbbar, pdp2, gal2, thumb, stage,
   prod-card, varlist, varrow, bb-*) -- zero collisions, all clear.

   SCOPED UNDER .gsx, same convention gs-page-storecollection.css uses:
   every top-level selector starts with `.gsx`, design tokens stay on `.gsx`
   (defined once in gs-brand.css, not redeclared here).
   ============================================================ */

/* ---- breadcrumb + prev/next bar ---- */
.gsx .crumbbar{border-bottom:1px solid var(--line);background:var(--white)}
.gsx .crumbbar-in{display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:52px;font-size:13.5px;color:var(--ink-2)}
.gsx .crumbbar a{opacity:.75}
.gsx .crumbbar a:hover{opacity:1;color:var(--indigo)}
.gsx .crumbbar .sep{opacity:.35;margin:0 8px}
.gsx .crumbbar .pager{display:flex;gap:14px;align-items:center;font-weight:650;font-size:13px}
.gsx .crumbbar .pager a{display:inline-flex;gap:6px;align-items:center}
@media(max-width:720px){.gsx .crumbbar .pager{display:none}}

/* ---- gallery: thumb rail + stage ---- */
.gsx .pdp2{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(0,.98fr);gap:56px;align-items:start;padding:44px 0 0}
@media(max-width:960px){.gsx .pdp2{grid-template-columns:1fr;gap:34px}}
.gsx .gal2{position:sticky;top:92px;display:grid;grid-template-columns:82px minmax(0,1fr);gap:14px}
/* A single image has no thumb rail: collapse the 82px thumb column or the
   stage lands in it and renders at thumbnail size. */
.gsx .gal2.is-single{grid-template-columns:minmax(0,1fr)}
@media(max-width:960px){.gsx .gal2{position:static}}
@media(max-width:560px){.gsx .gal2{grid-template-columns:1fr}}
.gsx .thumbrail{display:flex;flex-direction:column;gap:10px}
@media(max-width:560px){.gsx .thumbrail{flex-direction:row;order:2;overflow-x:auto;padding-bottom:4px}
  .gsx .thumbrail .thumb{flex:0 0 68px}}
.gsx .thumb{border-radius:var(--r-m);overflow:hidden;border:2px solid var(--line);background:var(--white);
  cursor:pointer;transition:border-color .15s;padding:0;aspect-ratio:1/1;display:block;width:100%}
.gsx .thumb:hover{border-color:var(--line-strong)}
.gsx .thumb.is-on{border-color:var(--ink)}
.gsx .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.gsx .stage{border-radius:var(--r-l);overflow:hidden;border:1px solid var(--line);background:var(--white);
  position:relative;aspect-ratio:1/1}
.gsx .stage img{width:100%;height:100%;object-fit:cover;display:block}
.gsx .stage .off{position:absolute;z-index:3;top:14px;right:14px;background:var(--white);color:var(--rose);
  font-size:12px;font-weight:800;padding:6px 11px;border-radius:100px;border:1px solid var(--line)}

/* ---- buy box ---- */
.gsx .buybox h1{font-size:clamp(26px,3.6vw,40px);letter-spacing:-.035em;margin-top:12px}
.gsx .bb-kicker{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.gsx .bb-lede{margin-top:14px;font-size:16.5px;color:var(--ink-2);opacity:.85;line-height:1.6}
.gsx .bb-price{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:22px 0 8px}
.gsx .price.is-lg b{font-size:38px}
.gsx .price.is-lg s{font-size:18px}
.gsx .saveflag{background:var(--rose-wash);color:var(--rose);font-size:12.5px;font-weight:800;padding:5px 11px;border-radius:100px}

/* ---- pills + stock line (not in gs-brand.css) ---- */
.gsx .pill{font-size:11.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;
  border-radius:100px;background:var(--neem-wash);color:var(--neem);display:inline-block}
.gsx .pill.is-warn{background:var(--haldi-wash);color:#8A6400}
.gsx .pill.is-rose{background:var(--rose-wash);color:var(--rose)}
.gsx .pill.is-ink{background:var(--paper-2);color:var(--ink-2)}
.gsx .stockline{font-size:12px;font-weight:700;margin-top:12px;display:flex;align-items:center;gap:6px;color:var(--neem)}
.gsx .stockline::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}

/* ---- variants: informational reference list, not a live picker (see
       store_product.php's own header comment for why) ---- */
.gsx .opt{margin-top:26px}
.gsx .opt-hd{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:11px}
.gsx .opt h4{font-family:var(--body);font-size:12px;letter-spacing:.13em;text-transform:uppercase;color:var(--neem);font-weight:700}
.gsx .varlist{border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden}
.gsx .varrow{display:flex;align-items:center;gap:14px;padding:12px 15px;border-bottom:1px solid var(--line);background:var(--white)}
.gsx .varrow:last-child{border-bottom:0}
.gsx .varrow.is-out{opacity:.55}
.gsx .varrow-b{flex:1;min-width:0}
.gsx .varrow-b b{display:block;font-size:14px;font-weight:700}
.gsx .varrow-opts{display:block;font-size:12.5px;color:var(--ink-2);opacity:.75;margin-top:3px}
.gsx .varrow-p{flex:none;font-weight:700;font-size:14px;font-variant-numeric:tabular-nums;text-align:right}
.gsx .varrow-p s{display:block;font-size:11.5px;opacity:.5;font-weight:500}
.gsx .varrow-stock{flex:none;font-size:11.5px;font-weight:700;color:var(--ink-2);opacity:.7;width:80px;text-align:right}
.gsx .varnote{font-size:12px;color:var(--ink-2);opacity:.65;line-height:1.5;margin-top:10px}

/* ---- quantity + add to cart ---- */
.gsx .qty{display:inline-flex;align-items:center;border:1.5px solid var(--line-strong);border-radius:100px;background:var(--white)}
.gsx .qty button{width:44px;min-height:54px;font-size:19px;font-weight:700;color:var(--ink-2);background:none;border:0}
.gsx .qty button:hover{color:var(--ink)}
.gsx .qty input{width:46px;text-align:center;border:0;background:none;font-family:var(--display);
  font-weight:800;font-size:17px;color:var(--ink);-moz-appearance:textfield}
.gsx .qty input::-webkit-outer-spin-button,.gsx .qty input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.gsx .buyrow{display:flex;gap:11px;margin-top:24px;align-items:stretch;flex-wrap:wrap}
.gsx .buyrow .btn{flex:1;min-width:170px}

/* ---- delivery (static copy) ---- */
.gsx .usp{display:grid;grid-template-columns:repeat(2,1fr);gap:13px;margin-top:26px;padding-top:24px;border-top:1px solid var(--line)}
@media(max-width:520px){.gsx .usp{grid-template-columns:1fr}}
.gsx .usp div{display:flex;gap:10px;font-size:13.5px;color:var(--ink-2);line-height:1.4;align-items:flex-start}
.gsx .usp .g{font-size:17px;flex:none}

/* ---- course pairing ---- */
.gsx .pairs{margin-top:26px;background:var(--indigo);color:#fff;border-radius:var(--r-l);padding:20px;
  display:flex;gap:16px;align-items:center;flex-wrap:wrap}
.gsx .pairs .g{font-size:34px;flex:none}
.gsx .pairs b{display:block;font-family:var(--display);font-size:16.5px;letter-spacing:-.025em;color:#fff}
.gsx .pairs p{font-size:13.5px;color:rgba(255,255,255,.75);margin-top:5px;line-height:1.45}
.gsx .pairs .btn{flex:none}

/* ---- frequently bought together ---- */
.gsx .fbt{margin-top:28px;background:var(--white);border:1px solid var(--line);border-radius:var(--r-l);padding:22px}
.gsx .fbt h3{font-size:18px;letter-spacing:-.03em}
.gsx .fbt .sub{font-size:13.5px;color:var(--ink-2);opacity:.75;margin-top:6px;line-height:1.45}
.gsx .fbtgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:16px}
@media(max-width:480px){.gsx .fbtgrid{grid-template-columns:1fr}}

/* product card, reused for the FBT strip -- Task 3's naming/shape,
   redeclared here since this page doesn't link gs-page-storecollection.css */
.gsx .prod-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.gsx .prod-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-s);border-color:var(--line-strong)}
.gsx .prod-art{position:relative;display:block;aspect-ratio:4/5;overflow:hidden;background:var(--paper-2)}
.gsx .prod-art img{width:100%;height:100%;object-fit:cover}
.gsx .prod-card-body{padding:12px 12px 0;flex:1;display:flex;flex-direction:column}
.gsx .prod-card-body h3{font-size:14px;line-height:1.28;letter-spacing:-.02em;font-weight:700}
.gsx .prod-card-body h3 a:hover{color:var(--indigo)}
.gsx .prod-card-foot{padding:10px 12px 12px;margin-top:10px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:8px}
.gsx .prod-stock.out{font-size:11.5px;font-weight:700;color:var(--ink-2);opacity:.6}

/* ---- sticky tab nav + panels ---- */
.gsx .tabnav{position:sticky;top:72px;z-index:60;background:rgba(248,248,244,.94);backdrop-filter:blur(12px);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:56px}
.gsx .tabnav-in{display:flex;gap:4px;overflow-x:auto;min-height:56px;align-items:center}
.gsx .tabnav a{flex:none;padding:9px 16px;border-radius:100px;font-size:14.5px;font-weight:650;
  color:var(--ink-2);transition:.15s;white-space:nowrap;cursor:pointer}
.gsx .tabnav a:hover{background:var(--paper-2);color:var(--ink)}
.gsx .tabnav a.is-on{background:var(--ink);color:#fff}
.gsx .tsec{padding:48px 0;border-bottom:1px solid var(--line)}
.gsx .tsec:last-of-type{border-bottom:0}
.gsx .tsec h2{font-size:clamp(24px,3vw,32px);margin-bottom:20px}
.gsx .prose{max-width:70ch;font-size:16px;line-height:1.72;color:var(--ink-2)}
.gsx .prose p+p{margin-top:16px}
.gsx .prose h3{font-family:var(--display);font-size:19px;color:var(--ink);margin:0 0 10px}
.gsx .twocol{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start}
@media(max-width:820px){.gsx .twocol{grid-template-columns:1fr;gap:28px}}
.gsx .spectable{width:100%;border-collapse:collapse;font-size:14.5px}
.gsx .spectable th,.gsx .spectable td{text-align:left;padding:11px 0;border-bottom:1px dashed var(--line);vertical-align:top}
.gsx .spectable th{width:42%;font-weight:700;color:var(--ink)}
.gsx .spectable td{color:var(--ink-2)}

/* ---- cart drawer + scrim + toast (store_drawer.php, included below) ----
   Byte-identical to gs-page-store.css's own copy of these rules. That file
   is Task 2's and is only linked from store_listing.php, so a page that
   includes store_drawer.php without also linking gs-page-store.css gets
   the drawer's HTML with no positioning/transform rules at all -- it
   renders inline at the bottom of the page instead of as a fixed, off-
   screen panel (caught by Playwright screenshot while verifying this
   page). Copied here rather than linking gs-page-store.css wholesale
   because that file also defines .prod-card/.pgrid/.empty/.sec with its
   own (different) values for the store home page -- linking it would
   reintroduce exactly the kind of cross-page bleed gs-blocks.css was
   excluded for (task-3-report.md). */
.gsx .scrim{position:fixed;inset:0;background:rgba(10,16,36,.5);backdrop-filter:blur(3px);z-index:120;
  opacity:0;visibility:hidden;transition:.25s}
.gsx .scrim.open{opacity:1;visibility:visible}
.gsx .drawer{position:fixed;top:0;right:0;height:100%;width:min(100%,420px);background:var(--paper);z-index:130;
  display:flex;flex-direction:column;transform:translateX(102%);transition:transform .3s cubic-bezier(.4,0,.2,1);
  box-shadow:var(--shadow-l)}
.gsx .drawer.open{transform:translateX(0)}
.gsx .drawer-hd{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 22px;
  border-bottom:1px solid var(--line);background:var(--white)}
.gsx .drawer-hd h2{font-size:19px}
.gsx .drawer-x{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-size:19px;background:var(--paper-2)}
.gsx .drawer-x:hover{background:var(--ink);color:#fff}
.gsx .drawer-body{flex:1;overflow-y:auto;padding:18px 22px}
.gsx .drawer-ft{border-top:1px solid var(--line);padding:20px 22px;background:var(--white)}
.gsx .ditem{display:grid;grid-template-columns:62px 1fr auto;gap:13px;padding:14px 0;border-bottom:1px dashed var(--line)}
.gsx .ditem-art{border-radius:10px;overflow:hidden;border:1px solid var(--line);aspect-ratio:1/1}
.gsx .ditem-art img{width:100%;height:100%;object-fit:cover;display:block}
.gsx .ditem b{font-size:13.5px;font-weight:700;line-height:1.3;display:block}
.gsx .ditem span{font-size:12px;color:var(--ink-2);opacity:.7;display:block;margin-top:4px}
.gsx .ditem-p{text-align:right;font-weight:700;font-size:14px}
.gsx .ditem-rm{font-size:11.5px;text-decoration:underline;color:var(--ink-2);margin-top:8px;display:block;margin-left:auto;cursor:pointer;background:none;border:0;font-family:inherit}
.gsx .ditem-rm:hover{color:var(--rose)}
.gsx .drawer-empty{text-align:center;padding:52px 12px}
.gsx .drawer-empty h3{font-size:19px;margin-top:0}
.gsx .drawer-empty p{font-size:14px;color:var(--ink-2);opacity:.75;margin-top:9px;line-height:1.5}

.gsx .toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,140%);z-index:200;background:var(--ink);
  color:#fff;border-radius:100px;padding:13px 24px;font-size:14.5px;font-weight:650;box-shadow:var(--shadow-l);
  display:flex;align-items:center;gap:10px;transition:transform .32s cubic-bezier(.34,1.4,.64,1)}
.gsx .toast.show{transform:translate(-50%,0)}
.gsx .toast .g{color:var(--haldi)}