:root{
  --bg:#f5f0e8;--panel:#fffaf4;--text:#181715;--muted:#6d665f;--line:#e2d6ca;
  --accent:#8c6547;--accent-2:#526b55;--dark:#221e1a;--shadow:0 18px 50px rgba(39,31,24,.11);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,"Segoe UI",sans-serif}
button,input,select{font:inherit}
button{cursor:pointer}
.app-header{height:72px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(245,240,232,.92);backdrop-filter:blur(14px);position:sticky;top:0;z-index:50}
.brand{font-weight:900;letter-spacing:.08em;text-decoration:none;color:var(--text);font-size:14px}.brand span{display:block;font-size:10px;color:var(--muted);letter-spacing:.18em}
.header-actions{display:flex;gap:8px}
.ghost-btn,.secondary-btn,.primary-btn{border-radius:999px;padding:12px 18px;font-weight:800;border:1px solid var(--line);background:transparent;color:var(--text);text-decoration:none}
.primary-btn{background:var(--dark);color:white;border-color:var(--dark)}
.app-shell{max-width:1440px;margin:auto;padding:20px 22px 40px}
.stepper-wrap{overflow-x:auto;padding-bottom:10px}
.stepper{display:grid;grid-template-columns:repeat(5,minmax(150px,1fr));gap:10px;min-width:800px}
.step-chip{border:1px solid var(--line);background:rgba(255,250,244,.7);border-radius:18px;padding:12px 14px;text-align:left;color:var(--muted)}
.step-chip span{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:900}
.step-chip strong{display:block;margin-top:4px;font-size:14px;color:inherit}
.step-chip.active{background:var(--dark);color:white;border-color:var(--dark)}
.step-chip.done{border-color:#9eb19f;background:#edf3ec;color:#304935}
.layout{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(360px,.7fr);gap:20px}
.main-panel,.preview-panel{background:var(--panel);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}
.main-panel{padding:30px;min-height:760px;display:flex;flex-direction:column}
.preview-panel{padding:22px}
.preview-sticky{position:sticky;top:96px}
.step{display:none}.step.active{display:block;animation:fade .22s ease}
@keyframes fade{from{opacity:.2;transform:translateY(5px)}to{opacity:1;transform:none}}
.step-kicker,.eyebrow{text-transform:uppercase;letter-spacing:.13em;font-size:11px;font-weight:900;color:var(--accent)}
h1{font-size:clamp(36px,5vw,62px);line-height:.98;letter-spacing:-.05em;margin:10px 0 16px;max-width:850px}
h2{margin:0;font-size:24px;letter-spacing:-.03em}
h3{margin:0 0 12px}
.lead{font-size:18px;color:var(--muted);max-width:760px;line-height:1.6}
.choice-grid,.mood-grid,.collection-grid,.colorway-grid{display:grid;gap:14px}
.room-grid{grid-template-columns:repeat(3,1fr);margin-top:28px}
.choice-card,.mood-card,.collection-card,.colorway-card{border:1px solid var(--line);background:white;border-radius:22px;padding:18px;text-align:left;transition:.18s ease;position:relative}
.choice-card:hover,.mood-card:hover,.collection-card:hover,.colorway-card:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(45,35,27,.09)}
.choice-card.selected,.mood-card.selected,.collection-card.selected,.colorway-card.selected{outline:3px solid rgba(140,101,71,.23);border-color:var(--accent)}
.choice-card .icon{font-size:28px;margin-bottom:14px}.choice-card strong,.mood-card strong,.collection-card strong,.colorway-card strong{display:block;font-size:18px}.choice-card small,.mood-card small,.collection-card small,.colorway-card small{color:var(--muted);display:block;margin-top:5px;line-height:1.4}
.mood-grid{grid-template-columns:repeat(3,1fr);margin-top:28px}
.mood-visual{height:150px;border-radius:16px;margin-bottom:14px;position:relative;overflow:hidden}
.mood-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.35),transparent 45%,rgba(0,0,0,.08))}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:28px}
label{font-size:14px;font-weight:800}
input,select{width:100%;padding:13px 14px;border-radius:14px;border:1px solid var(--line);background:white;margin-top:7px;color:var(--text)}
.color-input{display:grid;grid-template-columns:56px 1fr;gap:8px}.color-input input[type=color]{padding:4px;height:48px}
.placement-tools{display:grid;gap:22px;margin-top:24px}
.tool-group{border-top:1px solid var(--line);padding-top:18px}
.segmented{display:flex;gap:8px;flex-wrap:wrap}
.segmented button{border:1px solid var(--line);background:white;padding:10px 14px;border-radius:999px;font-weight:800}
.segmented button.selected{background:var(--dark);color:#fff;border-color:var(--dark)}
.collection-grid{grid-template-columns:repeat(3,1fr)}
.collection-swatch{height:72px;border-radius:14px;margin-bottom:12px}
.product-picker{display:grid;gap:10px}
.product-row{display:grid;grid-template-columns:1fr 110px 46px;gap:10px;align-items:center;border:1px solid var(--line);border-radius:16px;padding:12px;background:white}
.qty-control{display:grid;grid-template-columns:36px 38px 36px;align-items:center}
.qty-control button{height:34px;border:1px solid var(--line);background:var(--bg)}.qty-control span{text-align:center;font-weight:900}
.colorway-grid{grid-template-columns:repeat(3,1fr)}
.swatch-row{display:flex;height:52px;border-radius:12px;overflow:hidden;margin-bottom:11px;border:1px solid rgba(0,0,0,.08)}
.swatch-row i{flex:1}
.navigation-bar{margin-top:auto;padding-top:28px;display:flex;justify-content:space-between;gap:12px}
.preview-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.status-pill{background:#eee4da;color:var(--accent);padding:7px 10px;border-radius:999px;font-size:12px;font-weight:900}
.room-canvas-wrap{padding:35px 20px 24px}
.room-canvas{width:100%;aspect-ratio:4/3;background:#b69879;border:10px solid #d9d1c7;position:relative;box-shadow:inset 0 0 0 2px rgba(0,0,0,.08);min-height:260px}
.dimension{position:absolute;font-size:11px;font-weight:900;color:var(--muted);z-index:8}
.dimension-top{top:-31px;left:50%;transform:translateX(-50%)}
.dimension-side{right:-44px;top:50%;transform:translateY(-50%) rotate(90deg)}
.wall-label{position:absolute;width:22px;height:22px;border-radius:50%;background:var(--dark);color:white;display:grid;place-items:center;font-size:11px;font-weight:900;z-index:9}
.wall-top-label{top:-15px;left:50%}.wall-right-label{right:-15px;top:50%}.wall-bottom-label{bottom:-15px;left:50%}.wall-left-label{left:-15px;top:50%}
.furniture-block{position:absolute;background:#6d5746;border:1px solid rgba(255,255,255,.6);box-shadow:0 3px 8px rgba(0,0,0,.15);display:flex;align-items:center;justify-content:center;color:white;font-size:9px;font-weight:900;overflow:hidden}
.furniture-block.wall-a{top:0;height:18%;}.furniture-block.wall-b{right:0;width:18%;}.furniture-block.wall-c{bottom:0;height:18%;}.furniture-block.wall-d{left:0;width:18%;}
.summary-list{display:grid;gap:8px;border-top:1px solid var(--line);padding-top:16px}
.summary-item{display:flex;justify-content:space-between;gap:14px;color:var(--muted);font-size:14px}.summary-item strong{color:var(--text);text-align:right}
.estimate-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:14px;margin-top:24px}
.estimate-card,.breakdown-card{border:1px solid var(--line);border-radius:22px;padding:20px;background:white}
.estimate-card span{display:block;color:var(--muted);font-size:13px}.estimate-card strong{display:block;font-size:26px;margin-top:8px}.total-card{background:var(--dark);color:white}.total-card span,.total-card small{color:#d8cec5}.total-card strong{font-size:38px}
.breakdown-card{margin-top:14px}.breakdown-row{display:flex;justify-content:space-between;gap:20px;padding:10px 0;border-bottom:1px solid var(--line)}.breakdown-row:last-child{border:0}
.estimate-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
@media(max-width:1050px){
  .layout{grid-template-columns:1fr}.preview-panel{order:-1}.preview-sticky{position:static}.room-canvas-wrap{max-width:640px;margin:auto}
}
@media(max-width:720px){
  .app-header{padding:0 14px}.header-actions a{display:none}.app-shell{padding:12px}.main-panel,.preview-panel{border-radius:20px}.main-panel{padding:20px;min-height:auto}
  .room-grid,.mood-grid,.collection-grid,.colorway-grid,.form-grid,.estimate-grid{grid-template-columns:1fr}
  .mood-grid{grid-template-columns:1fr 1fr}.navigation-bar{position:sticky;bottom:0;background:rgba(255,250,244,.95);padding:14px 0 4px;z-index:20}
  .navigation-bar button{flex:1}.stepper{min-width:650px}.room-canvas{min-height:220px}.product-row{grid-template-columns:1fr auto}.product-row .remove-product{display:none}
}
@media(max-width:460px){
  .mood-grid{grid-template-columns:1fr}.preview-panel{padding:16px}.room-canvas-wrap{padding-left:10px;padding-right:22px}
}
@media print{
  .app-header,.stepper-wrap,.navigation-bar,.estimate-actions,.preview-panel{display:none!important}
  .layout{display:block}.main-panel{box-shadow:none;border:0}.step{display:none!important}.step[data-step="5"]{display:block!important}
}


/* Integrated interactive 2D editor */
.editor-toolbar{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin:16px 0 8px}
.editor-toolbar button{border:1px solid var(--line);background:white;border-radius:10px;padding:7px 10px;font-weight:850}
.editor-toolbar span,.editor-toolbar label{font-size:12px;color:var(--muted)}
.editor-toolbar label{display:flex;align-items:center;gap:5px;margin-left:auto}
.editor-toolbar label input{width:auto;margin:0}
.room-canvas-wrap{overflow:auto;min-height:340px;max-height:520px;border-radius:18px;background:#ded7cf;padding:48px}
.room-canvas{transform-origin:top left;flex:none;min-height:0!important;aspect-ratio:auto!important}
.room-canvas.grid-on{background-image:linear-gradient(rgba(255,255,255,.23) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.23) 1px,transparent 1px)}
.plan-furniture{position:absolute;border:2px solid rgba(255,255,255,.85);border-radius:4px;box-shadow:0 4px 12px rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center;user-select:none;touch-action:none;cursor:grab;z-index:3}
.plan-furniture:active{cursor:grabbing}
.plan-furniture.selected{outline:3px solid var(--dark);outline-offset:3px;z-index:15}
.plan-furniture-label{font-size:9px;font-weight:900;color:white;text-align:center;text-shadow:0 1px 2px rgba(0,0,0,.45);padding:3px;pointer-events:none;overflow:hidden}
.plan-resize{position:absolute;width:15px;height:15px;border-radius:50%;right:-9px;bottom:-9px;background:var(--dark);border:2px solid white;cursor:nwse-resize;touch-action:none}
.plan-rotate{position:absolute;width:18px;height:18px;border-radius:50%;left:50%;top:-27px;transform:translateX(-50%);background:white;border:2px solid var(--dark);display:grid;place-items:center;font-size:10px;cursor:pointer}
.plan-furniture:not(.selected) .plan-resize,.plan-furniture:not(.selected) .plan-rotate{display:none}
.product-row{grid-template-columns:1fr auto!important}
.product-row .add-product-btn{border:1px solid var(--line);border-radius:999px;background:var(--dark);color:white;padding:9px 12px;font-weight:850}
.editor-fields{background:#f7f1e9;border-radius:18px;padding:15px}
.editor-title{display:flex;justify-content:space-between;gap:10px;align-items:center}
.editor-title span{font-size:12px;color:var(--muted)}
.object-fields{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.object-buttons{grid-column:1/-1;display:flex;gap:9px}
.object-buttons>*{flex:1}
.danger-btn{border:1px solid #9c4037;background:#9c4037;color:white;border-radius:999px;padding:12px 18px;font-weight:850}
@media(max-width:720px){
  .room-canvas-wrap{padding:38px 28px;min-height:300px}
  .object-fields{grid-template-columns:1fr 1fr}
  .editor-toolbar label{margin-left:0}
}


/* v2.2 responsive 2D viewport */
.preview-panel{min-width:0;overflow:hidden}
.preview-sticky{min-width:0}
.room-canvas-wrap{
  width:100%;
  max-width:100%;
  overflow:hidden;
  min-height:280px;
  max-height:none;
  padding:34px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.room-canvas{
  flex:0 0 auto;
  transform-origin:center center!important;
  max-width:none;
}
.editor-toolbar{
  width:100%;
  justify-content:flex-start;
}
.editor-toolbar #zoomLabel{
  margin-right:auto;
}
@media(max-width:1050px){
  .room-canvas-wrap{min-height:360px}
}
@media(max-width:720px){
  .room-canvas-wrap{
    min-height:260px;
    padding:28px 22px;
  }
  .preview-panel{padding:14px}
}