/* ============================================================
   imcw configurator — assets/css/configurator.css
   引用时记得 ?v= cache-bust (ASSET_V in config.php)
   ============================================================ */
:root{
  --paper:#FAFAF8;
  --ink:#131315;
  --gray:#8A8A8E;
  --line:#E7E6E2;
  --red:#E8332A;
  --stage-bg:#F1F0EC;
  --radius:2px;
  --font-display:'Cormorant Garamond', Georgia, serif;
  --font-ui:'Inter', -apple-system, sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  font-family:var(--font-ui);
  background:var(--paper);
  color:var(--ink);
  font-size:15px;
  line-height:1.5;
}
img{display:block;max-width:100%;}
button{font:inherit;cursor:pointer;background:none;border:none;color:inherit;}

/* ---------- header ---------- */
.topbar{
  display:flex;align-items:baseline;justify-content:space-between;
  padding:20px 28px;border-bottom:1px solid var(--line);
  background:var(--paper);
}
.logo{
  font-family:var(--font-display);
  font-weight:500;font-size:30px;letter-spacing:.02em;line-height:1;
  color:var(--ink);text-decoration:none;
}
.topbar-crumb{
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--gray);
}

/* ---------- layout ---------- */
.wrap{
  display:grid;
  grid-template-columns:minmax(0,58%) minmax(0,42%);
  max-width:1440px;margin:0 auto;
  min-height:calc(100vh - 71px);
}

/* ---------- stage ---------- */
.stage-col{
  position:sticky;top:0;align-self:start;
  height:calc(100vh - 71px);
  display:flex;flex-direction:column;
  background:var(--stage-bg);
  overflow:hidden;
}
.config-stage{
  position:relative;flex:1;min-height:0;
  display:flex;align-items:center;justify-content:center;
}
.stage-frame{
  position:relative;
  width:min(82%, calc(100vh - 220px));
  aspect-ratio:1/1;
}
.stage-frame .layer,
.stage-frame .layer-svg{
  position:absolute;inset:0;width:100%;height:100%;
}
.stage-frame .layer img{
  position:absolute;inset:0;width:100%;height:100%;
  opacity:0;transition:opacity .22s ease;
}
.stage-frame .layer img.on{opacity:1;}
.stage-caption{
  padding:0 32px 26px;
  display:flex;justify-content:space-between;align-items:baseline;
}
.stage-caption .pname{
  font-family:var(--font-display);font-size:22px;font-weight:400;
}
.stage-caption .ptime{
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--gray);
  font-variant-numeric:tabular-nums;
}

/* ---------- options ---------- */
.options-col{
  padding:40px 44px 140px;
}
.opt-head{margin-bottom:36px;}
.opt-head h1{
  font-family:var(--font-display);font-weight:400;
  font-size:34px;line-height:1.15;margin-bottom:6px;
}
.opt-head p{color:var(--gray);font-size:14px;max-width:38ch;}

.comp-group{
  padding:26px 0;border-top:1px solid var(--line);
}
.comp-label{
  display:flex;justify-content:space-between;align-items:baseline;
  margin-bottom:16px;
}
.comp-label .cname{
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600;
}
.comp-label .csel{
  font-size:13px;color:var(--gray);
}
.swatches{
  display:flex;flex-wrap:wrap;gap:14px 18px;
}
.swatch{
  display:flex;flex-direction:column;align-items:center;gap:8px;
  width:76px;text-align:center;
  -webkit-tap-highlight-color:transparent;
}
.swatch .dot{
  width:46px;height:46px;border-radius:50%;
  border:1px solid rgba(0,0,0,.12);
  position:relative;
  transition:transform .15s ease;
}
.swatch:hover .dot{transform:scale(1.06);}
.swatch.sel .dot::after{
  content:'';position:absolute;inset:-6px;border-radius:50%;
  border:1.5px solid var(--ink);
}
.swatch .sname{
  font-size:11.5px;line-height:1.3;color:var(--ink);
}
.swatch .sdelta{
  font-size:11px;color:var(--gray);font-variant-numeric:tabular-nums;
}
.swatch.sel .sname{font-weight:600;}
.swatch .sdelta.plus{color:var(--red);}
.swatch.oos{opacity:.35;pointer-events:none;}
.swatch.oos .sdelta{text-decoration:line-through;}

/* ---------- summary ---------- */
.summary{
  margin-top:8px;padding-top:26px;border-top:1px solid var(--ink);
}
.sum-row{
  display:flex;justify-content:space-between;
  font-size:13.5px;color:var(--gray);padding:3px 0;
}
.sum-row b{color:var(--ink);font-weight:500;}
.sum-total{
  display:flex;justify-content:space-between;align-items:baseline;
  margin-top:14px;padding-top:14px;border-top:1px solid var(--line);
}
.sum-total .tl{
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:600;
}
.sum-total .tv{
  font-family:var(--font-display);font-size:30px;
  font-variant-numeric:tabular-nums;
}
.btn-cart{
  margin-top:20px;width:100%;
  background:var(--ink);color:#fff;
  padding:16px;font-size:12px;letter-spacing:.22em;text-transform:uppercase;font-weight:600;
  border-radius:var(--radius);
  transition:opacity .15s ease;
}
.btn-cart:hover{opacity:.85;}
.btn-cart:disabled{opacity:.4;cursor:default;}
.btn-cart:focus-visible{outline:2px solid var(--red);outline-offset:3px;}
.swatch:focus-visible .dot{outline:2px solid var(--red);outline-offset:3px;}

/* toast */
.toast{
  position:fixed;left:50%;bottom:30px;transform:translate(-50%,20px);
  background:var(--ink);color:#fff;padding:13px 22px;border-radius:3px;
  font-size:13px;opacity:0;pointer-events:none;
  transition:opacity .25s ease, transform .25s ease;z-index:50;
}
.toast.show{opacity:1;transform:translate(-50%,0);}

/* ---------- mobile ---------- */
@media (max-width:900px){
  .wrap{grid-template-columns:1fr;min-height:0;}
  .stage-col{
    position:sticky;top:0;z-index:10;
    height:auto;
  }
  .config-stage{padding:14px 0 4px;}
  .stage-frame{width:min(62vw, 46vh);}
  .stage-caption{padding:0 20px 12px;}
  .stage-caption .pname{font-size:17px;}
  .options-col{padding:26px 20px 170px;}
  .opt-head h1{font-size:27px;}
  .mobile-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:20;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:14px 20px calc(14px + env(safe-area-inset-bottom));
    background:var(--paper);border-top:1px solid var(--line);
  }
  .mobile-bar .mv{
    font-family:var(--font-display);font-size:24px;font-variant-numeric:tabular-nums;
  }
  .mobile-bar .btn-cart{margin-top:0;width:auto;padding:14px 26px;}
}
@media (min-width:901px){
  .mobile-bar{display:none;}
}
@media (prefers-reduced-motion:reduce){
  .stage-frame .layer img{transition:none;}
  .swatch:hover .dot{transform:none;}
}

/* ---------- topbar nav + live cart badge (configurator) ---------- */
.topbar-right{display:flex;align-items:baseline;gap:26px;}
.topbar-link{
  font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--gray);text-decoration:none;transition:color .15s ease;
}
.topbar-link:hover{color:var(--ink);}
.topbar-link.cart{position:relative;color:var(--ink);}
.topbar-link.cart[data-count]::after{
  content:attr(data-count);
  position:absolute;top:-9px;right:-16px;
  background:var(--red);color:#fff;
  font-size:9px;line-height:1;font-weight:600;letter-spacing:0;
  padding:3px 5px;border-radius:8px;min-width:15px;text-align:center;
}
@media (max-width:600px){
  .topbar-crumb{display:none;}
}
.toast .toast-link{
  margin-left:14px;color:#fff;font-weight:600;
  border-bottom:1px solid rgba(255,255,255,.6);text-decoration:none;
}