/* ============================================================================
   DALFASTART — Premium 360° Artwork Viewer & Print Configurator
   Luxury-museum aesthetic: navy chrome, gold accents, generous white space.
   All colours flow from CSS variables (design system) for one-place theming.
   ========================================================================== */

:root{
  --bg:#FFFFFF;
  --bg-soft:#F5F7FA;
  --navy:#0B1F3B;
  --navy-2:#143462;
  --gold:#C99B2E;
  --gold-text:#A87F1F;
  --gold-soft:#F3E7C9;
  --orange:#E8913A;
  --ink:#14202E;
  --ink-soft:#5B6B7E;
  --line:#E3E8EF;
  --radius:14px;
  --shadow-card:0 10px 30px -18px rgba(11,31,59,.25);

  --toolbar-h:60px;
  --panel-w:360px;
  --ease:cubic-bezier(.22,.61,.36,1);

  /* Live-configurable frame + artwork geometry (set by JS) */
  --frame-face:linear-gradient(135deg,#2a2a2a,#111);
  --frame-edge:#0d0d0d;
  --frame-w:26px;      /* frame border width  */
  --art-depth:34px;    /* physical depth of the framed piece (for 3D sides) */
  --mat-w:0px;         /* passe-partout / mat width */
  --wall:#e9e4db;      /* room preview wall colour */
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;font:15px/1.55 'Segoe UI','Helvetica Neue',Arial,sans-serif;color:var(--ink);
  background:var(--bg-soft);-webkit-font-smoothing:antialiased;overflow:hidden;
}
button{font:inherit;color:inherit;cursor:pointer;}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px;border-radius:6px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- Shell -------------------------------------------------------- */
.viewer{display:flex;flex-direction:column;height:100vh;height:100dvh;}

/* ---------- Toolbar ------------------------------------------------------ */
.toolbar{
  height:var(--toolbar-h);flex:0 0 var(--toolbar-h);display:flex;align-items:center;gap:6px;
  padding:0 14px;background:var(--navy);color:#fff;z-index:40;
  box-shadow:0 2px 14px -6px rgba(11,31,59,.6);
}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;white-space:nowrap;}
.brand svg{width:30px;height:30px;}
.brand .name b{color:var(--gold);}
.toolbar .title{font-size:13px;color:#cdd7e6;max-width:30ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.toolbar .spacer{flex:1;}
.tgroup{display:flex;align-items:center;gap:2px;}
.tgroup+.tgroup{margin-left:6px;padding-left:8px;border-left:1px solid rgba(255,255,255,.14);}
.tbtn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-width:38px;height:38px;
  padding:0 9px;background:transparent;border:0;border-radius:10px;color:#eaf0f8;
  transition:background .18s var(--ease),transform .12s var(--ease);}
.tbtn svg{width:19px;height:19px;pointer-events:none;}
.tbtn:hover{background:rgba(255,255,255,.12);}
.tbtn:active{transform:translateY(1px);}
.tbtn[aria-pressed="true"],.tbtn.active{background:var(--gold);color:var(--navy);}
.tbtn .lbl{font-size:13px;font-weight:600;}
.zoomlabel{min-width:46px;text-align:center;font-size:13px;color:#cdd7e6;font-variant-numeric:tabular-nums;}

/* ---------- Body: stage + config panel ---------------------------------- */
.body{flex:1;display:flex;min-height:0;position:relative;}

/* ---------- Stage (3D gallery space) ------------------------------------ */
.stage{
  position:relative;flex:1;min-width:0;overflow:hidden;
  display:flex;align-items:center;justify-content:center;
  background:
    radial-gradient(120% 80% at 50% 8%, #ffffff 0%, #eef2f7 60%, #e4e9f0 100%);
  perspective:1900px;perspective-origin:50% 42%;touch-action:none;
}
.stage.grabbing{cursor:grabbing;}
/* museum spotlight wash */
.stage::before{
  content:"";position:absolute;left:50%;top:-6%;width:60%;height:70%;transform:translateX(-50%);
  background:radial-gradient(closest-side, rgba(255,251,240,.9), rgba(255,251,240,0));
  pointer-events:none;filter:blur(6px);
}

/* Zoom/pan wrapper */
.scene-wrap{position:relative;transform-origin:center center;transition:transform .28s var(--ease);will-change:transform;}
.scene-wrap.panning{transition:none;}

/* The rotating framed artwork (a real 3D box) */
.scene{position:relative;transform-style:preserve-3d;transition:transform .12s linear;will-change:transform;}
.scene.animate{transition:transform 1s var(--ease);}

/* Faces centre on the scene's centre so the box builds symmetrically. */
.face{position:absolute;top:50%;left:50%;backface-visibility:hidden;overflow:hidden;}

/* Front = frame + mat + artwork */
.face.front{
  display:flex;align-items:center;justify-content:center;
  border:var(--frame-w) solid transparent;
  background:var(--frame-face) border-box;
  box-shadow:0 26px 50px -24px rgba(11,31,59,.6), inset 0 0 0 1px rgba(0,0,0,.25);
}
.face.front .mat{padding:var(--mat-w);background:#fbfbf8;width:100%;height:100%;display:flex;}
.face.front .art{width:100%;height:100%;object-fit:cover;display:block;box-shadow:inset 0 0 0 1px rgba(0,0,0,.15);}
/* subtle glass reflection on the artwork */
.face.front .glare{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(115deg, rgba(255,255,255,.20) 0%, rgba(255,255,255,0) 22%, rgba(255,255,255,0) 78%, rgba(255,255,255,.08) 100%);
  opacity:.0;transition:opacity .3s var(--ease);}
.scene.glass .face.front .glare{opacity:1;}

/* Back = backing board, stretcher bars, hanging wire + label */
.face.back{background:#d9d3c8;}
.face.back .board{position:absolute;inset:6%;background:linear-gradient(160deg,#efe9dd,#d7cfc0);border:1px solid #c9c0ad;border-radius:2px;box-shadow:inset 0 0 30px rgba(0,0,0,.12);}
.face.back .bar{position:absolute;background:linear-gradient(90deg,#c8bda4,#e4dcc9);box-shadow:0 1px 2px rgba(0,0,0,.15);}
.face.back .bar.v{top:6%;bottom:6%;width:7%;}
.face.back .bar.h{left:6%;right:6%;height:7%;}
.face.back .wire{position:absolute;left:24%;right:24%;top:30%;height:22%;border:2px solid #6b5f45;border-bottom:0;border-radius:60% 60% 0 0;opacity:.7;}
.face.back .dring{position:absolute;width:10px;height:10px;border:2px solid #6b5f45;border-radius:50%;top:30%;}
.face.back .dring.l{left:23%;} .face.back .dring.r{right:23%;}
.face.back .label{position:absolute;left:50%;bottom:12%;transform:translateX(-50%);background:#fff;border:1px solid #cbb26a;
  padding:8px 12px;border-radius:4px;font-size:10px;color:#5b4a1f;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.12);max-width:60%;}
.face.back .label b{display:block;color:var(--navy);font-size:11px;}

/* Material surface textures overlaid on the artwork (and in the close-up). */
.tex{position:absolute;inset:0;pointer-events:none;z-index:3;}
.tex.tex-canvas{mix-blend-mode:multiply;opacity:.22;background:
  repeating-linear-gradient(0deg, rgba(0,0,0,.05) 0 1px, transparent 1px 4px),
  repeating-linear-gradient(90deg, rgba(0,0,0,.05) 0 1px, transparent 1px 4px);}
.tex.tex-metal{mix-blend-mode:screen;opacity:.4;background:
  repeating-linear-gradient(115deg, rgba(255,255,255,.14) 0 2px, rgba(0,0,0,.05) 2px 5px);}
.tex.tex-acrylic,.tex.tex-gloss{mix-blend-mode:screen;opacity:.75;background:
  linear-gradient(118deg, rgba(255,255,255,.30) 0%, rgba(255,255,255,0) 28%, rgba(255,255,255,0) 72%, rgba(255,255,255,.14) 100%);}
.tex.tex-matte{mix-blend-mode:multiply;opacity:.5;background:radial-gradient(rgba(0,0,0,.06) 1px, transparent 1px);background-size:3px 3px;}
.tex.tex-wood{mix-blend-mode:multiply;opacity:.35;background:
  repeating-linear-gradient(90deg, rgba(120,80,40,.14) 0 3px, rgba(80,50,20,.07) 3px 8px);}
.tex.tex-paper{mix-blend-mode:multiply;opacity:.4;background:radial-gradient(rgba(0,0,0,.04) 1px, transparent 1px);background-size:2px 2px;}

/* Close-up material inspection tile */
.closeup{width:100%;height:160px;border-radius:12px;border:1px solid var(--line);overflow:hidden;position:relative;
  background-size:330%;background-position:40% 44%;background-repeat:no-repeat;box-shadow:inset 0 0 0 1px rgba(0,0,0,.05);}
.closeup .cu-tex{position:absolute;inset:0;}
.closeup .cu-badge{position:absolute;left:8px;bottom:8px;background:rgba(11,31,59,.82);color:#fff;font-size:11px;padding:3px 9px;border-radius:20px;z-index:5;}

/* The four frame-depth sides */
.face.side{background:var(--frame-edge);box-shadow:inset 0 0 24px rgba(0,0,0,.5);}
.face.side.wood{background:linear-gradient(90deg,#7a5433,#insetShadow 0,#5c3d24);}

/* hanging shadow on the wall behind */
.cast-shadow{position:absolute;border-radius:10px;background:rgba(11,31,59,.16);filter:blur(38px);z-index:-1;}

/* Rotation hint chip */
.hint{position:absolute;bottom:16px;left:50%;transform:translateX(-50%);z-index:8;
  background:rgba(11,31,59,.8);color:#fff;padding:7px 14px;border-radius:20px;font-size:12px;
  display:flex;align-items:center;gap:8px;pointer-events:none;transition:opacity .4s var(--ease);}
.hint svg{width:15px;height:15px;}

/* Floating rotate controls */
.rot-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:9;width:46px;height:46px;border-radius:50%;
  border:1px solid var(--line);background:rgba(255,255,255,.9);color:var(--navy);display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-card);backdrop-filter:blur(4px);transition:transform .15s var(--ease);}
.rot-arrow:hover{transform:translateY(-50%) scale(1.06);background:#fff;}
.rot-arrow svg{width:22px;height:22px;}
.rot-arrow.left{left:16px;} .rot-arrow.right{right:16px;}

/* Bottom rotation slider */
.rot-bar{position:absolute;left:50%;bottom:14px;transform:translateX(-50%);z-index:9;display:flex;align-items:center;gap:12px;
  background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:30px;padding:8px 16px;box-shadow:var(--shadow-card);backdrop-filter:blur(6px);}
.rot-bar input[type=range]{width:230px;-webkit-appearance:none;appearance:none;height:5px;border-radius:5px;background:var(--line);}
.rot-bar input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--gold);border:2px solid #fff;box-shadow:0 2px 5px rgba(11,31,59,.4);cursor:pointer;}
.rot-bar input[type=range]::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--gold);border:2px solid #fff;cursor:pointer;}
.rot-bar .deg{font-size:12px;color:var(--ink-soft);min-width:42px;text-align:center;font-variant-numeric:tabular-nums;}
.rot-bar .spin{border:0;background:var(--navy);color:#fff;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;}
.rot-bar .spin.active{background:var(--gold);color:var(--navy);}
.rot-bar .spin svg{width:16px;height:16px;}

/* ---------- Config / info panel (right) --------------------------------- */
.panel{
  width:var(--panel-w);max-width:90vw;flex:0 0 var(--panel-w);background:var(--bg);
  border-left:1px solid var(--line);display:flex;flex-direction:column;z-index:20;
  box-shadow:-8px 0 30px -24px rgba(11,31,59,.5);transition:transform .3s var(--ease);
}
.panel-scroll{overflow-y:auto;padding:20px;flex:1;}
.art-head h1{font:600 21px/1.25 'Segoe UI',Arial,sans-serif;color:var(--navy);margin:0 0 4px;}
.art-head .collection{color:var(--gold-text);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;}
.art-price{display:flex;align-items:baseline;gap:10px;margin:14px 0;}
.art-price .now{font-size:26px;font-weight:700;color:var(--navy);}
.art-price .was{font-size:15px;color:var(--ink-soft);text-decoration:line-through;}

.cfg{margin:18px 0;}
.cfg > .lab{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:9px;display:flex;justify-content:space-between;}
.cfg > .lab .val{color:var(--navy);font-weight:600;text-transform:none;letter-spacing:0;}

/* Swatch grid (frames / materials) */
.swatches{display:flex;flex-wrap:wrap;gap:8px;}
.swatch{width:40px;height:40px;border-radius:10px;border:2px solid var(--line);position:relative;overflow:hidden;padding:0;transition:transform .14s var(--ease),border-color .14s var(--ease);}
.swatch:hover{transform:translateY(-2px);}
.swatch.sel{border-color:var(--gold);box-shadow:0 0 0 2px var(--gold-soft);}
.swatch .cap{position:absolute;inset:auto 0 0 0;font-size:0;}

/* Chip options (sizes / materials / rooms) */
.chips{display:flex;flex-wrap:wrap;gap:8px;}
.chip{border:1px solid var(--line);background:#fff;border-radius:20px;padding:7px 13px;font-size:13px;color:var(--ink);transition:all .14s var(--ease);white-space:nowrap;}
.chip:hover{border-color:var(--navy);}
.chip.sel{background:var(--navy);color:#fff;border-color:var(--navy);}
.chip small{opacity:.7;margin-left:5px;}

/* Segmented control (orientation) */
.seg{display:flex;border:1px solid var(--line);border-radius:10px;overflow:hidden;}
.seg button{flex:1;border:0;background:#fff;padding:8px 4px;font-size:12px;color:var(--ink-soft);}
.seg button.sel{background:var(--gold-soft);color:var(--gold-text);font-weight:700;}

/* Info list */
.meta{border-top:1px solid var(--line);margin-top:8px;padding-top:14px;}
.meta dl{display:grid;grid-template-columns:38% 62%;gap:7px 10px;margin:0;font-size:13px;}
.meta dt{color:var(--ink-soft);}
.meta dd{margin:0;color:var(--ink);}
.meta .desc{margin:12px 0 0;color:var(--ink-soft);font-size:13.5px;line-height:1.6;}
.palette{display:flex;gap:6px;margin-top:6px;}
.palette i{width:20px;height:20px;border-radius:6px;border:1px solid var(--line);}

/* Buy bar */
.buybar{border-top:1px solid var(--line);padding:14px 20px;display:flex;gap:10px;align-items:center;background:var(--bg);}
.buybar .total{flex:1;}
.buybar .total .cfgline{font-size:12px;color:var(--gold-text);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.buybar .total .t{font-size:11px;color:var(--ink-soft);}
.buybar .total .p{font-size:20px;font-weight:700;color:var(--navy);}
.btn-buy{background:var(--gold);color:var(--navy);border:0;border-radius:12px;padding:13px 22px;font-weight:700;font-size:15px;
  box-shadow:0 8px 20px -10px rgba(201,155,46,.8);transition:transform .14s var(--ease);text-decoration:none;display:inline-block;}
.btn-buy:hover{transform:translateY(-1px);}

/* ---------- Room / wall preview overlay --------------------------------- */
.room{position:absolute;inset:0;z-index:30;display:none;background:#000;}
.room.open{display:block;}
.room .scene-room{position:absolute;inset:0;overflow:hidden;
  background:linear-gradient(180deg,var(--wall) 0%,var(--wall) 72%, #cbb79c 72%, #b89f7e 100%);}
.room .floor-line{position:absolute;left:0;right:0;top:72%;height:1px;background:rgba(0,0,0,.12);}
.room .baseboard{position:absolute;left:0;right:0;top:72%;height:5%;background:rgba(255,255,255,.55);border-top:1px solid rgba(0,0,0,.08);}
.room .sofa{position:absolute;left:50%;bottom:2%;transform:translateX(-50%);width:46%;height:26%;
  background:linear-gradient(180deg,#8a8f98,#6d727b);border-radius:26px 26px 10px 10px;box-shadow:0 20px 40px -18px rgba(0,0,0,.5);}
.room .sofa::before{content:"";position:absolute;left:6%;right:6%;top:14%;height:44%;background:rgba(255,255,255,.12);border-radius:18px;}
.room .framed{position:absolute;left:50%;top:34%;transform:translate(-50%,-50%);
  border:var(--frame-w) solid transparent;background:var(--frame-face) border-box;
  box-shadow:0 30px 50px -20px rgba(0,0,0,.55);}
.room .framed .art{width:100%;height:100%;object-fit:cover;display:block;}
.room .roombar{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);z-index:5;display:flex;gap:10px;align-items:center;flex-wrap:nowrap;
  background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:16px;padding:10px 14px;box-shadow:var(--shadow-card);max-width:94%;}
.room .roombar .grp{display:flex;gap:6px;align-items:center;min-width:0;}
.room .roombar .grp+.grp{padding-left:10px;border-left:1px solid var(--line);}
.room .roombar #roomChips{flex-wrap:nowrap;overflow-x:auto;max-width:42vw;scrollbar-width:thin;padding-bottom:2px;}
.room .roombar #roomChips .chip{flex:0 0 auto;}
.room .roombar #wallSwatches{flex-wrap:nowrap;}
.room .roombar .lab{font-size:11px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:.06em;}
.room .close-room{position:absolute;top:16px;right:16px;z-index:6;width:42px;height:42px;border-radius:50%;border:0;background:rgba(11,31,59,.86);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-card);}
.wallswatch{width:26px;height:26px;border-radius:8px;border:2px solid #fff;box-shadow:0 0 0 1px var(--line);padding:0;}
.wallswatch.sel{box-shadow:0 0 0 2px var(--gold);}

/* ---------- High-resolution detail inspector ---------------------------- */
.inspector{position:fixed;inset:0;z-index:80;background:rgba(8,14,26,.97);display:none;}
.inspector.open{display:block;}
.insp-stage{position:absolute;inset:0;overflow:hidden;display:flex;align-items:center;justify-content:center;cursor:grab;touch-action:none;}
.insp-stage.grabbing{cursor:grabbing;}
.insp-stage img{transform-origin:center center;will-change:transform;user-select:none;-webkit-user-drag:none;image-rendering:auto;}
.insp-bar{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);display:flex;gap:6px;align-items:center;
  background:rgba(255,255,255,.96);border-radius:30px;padding:8px 14px;box-shadow:var(--shadow-card);flex-wrap:wrap;justify-content:center;max-width:94%;}
.insp-bar button{border:1px solid var(--line);background:#fff;border-radius:20px;padding:6px 12px;font-size:13px;color:var(--ink);}
.insp-bar button.sel{background:var(--navy);color:#fff;border-color:var(--navy);}
.insp-bar .insp-hint{font-size:12px;color:var(--ink-soft);margin-left:6px;}
.insp-title{position:absolute;top:18px;left:20px;color:#fff;font-size:14px;opacity:.85;}
.insp-close{position:absolute;top:16px;right:16px;width:42px;height:42px;border-radius:50%;border:0;background:rgba(255,255,255,.92);color:var(--navy);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-card);z-index:5;}

/* ---------- misc -------------------------------------------------------- */
.loading{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--ink-soft);z-index:50;background:var(--bg-soft);}
.spinner{width:42px;height:42px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--gold);animation:spin 1s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

.panel-toggle{position:absolute;top:12px;right:12px;z-index:25;display:none;}

/* ---------- Responsive -------------------------------------------------- */
@media (max-width:960px){
  :root{--panel-w:320px;}
  .toolbar .title{display:none;}
  .tbtn .lbl{display:none;}
}
@media (max-width:760px){
  .body{flex-direction:column;}
  .panel{width:100%;flex:0 0 auto;max-height:46%;border-left:0;border-top:1px solid var(--line);}
  .stage{flex:1;}
  .rot-bar input[type=range]{width:150px;}
}
@media (prefers-reduced-motion:reduce){
  .scene,.scene-wrap,.panel,.face.front .glare{transition-duration:.01ms !important;}
  .spinner{animation-duration:1.5s;}
}