:root{
  --ink:#171717;--muted:#6d665f;--paper:#f6f1ea;--surface:#fffaf4;--line:#e5dace;
  --accent:#8b6548;--accent-dark:#5c402e;--green:#526b55;--dark:#201c19;
  --shadow:0 20px 60px rgba(35,30,25,.12);--radius:26px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5}
button,input,select,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}
.app-header{position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:13px 22px;background:rgba(246,241,234,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(18px)}
.brand{font-weight:950;letter-spacing:.08em}.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:11px 17px;font-weight:800;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.primary-btn{background:var(--ink);color:#fff;border-color:var(--ink)}.secondary-btn{background:transparent}
.app-shell{max-width:1440px;margin:auto;padding:22px}
.progress-wrap{max-width:920px;margin:0 auto 20px}.progress-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}.progress-track,.completion-track{height:7px;border-radius:999px;background:#e8ddd1;overflow:hidden;margin-top:8px}.progress-track span,.completion-track span{display:block;height:100%;width:10%;background:var(--accent);transition:.3s}
.layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:24px}.main-panel{background:var(--surface);border:1px solid var(--line);border-radius:30px;box-shadow:var(--shadow);overflow:hidden}
#configuratorForm{padding:34px}.step{display:none}.step.active{display:block}.step-kicker,.eyebrow,.offer-kicker{text-transform:uppercase;letter-spacing:.15em;font-size:11px;font-weight:900;color:var(--accent-dark);margin-bottom:10px}
h1{font-size:clamp(36px,5vw,66px);line-height:.98;letter-spacing:-.05em;margin:0 0 18px}h2{font-size:32px;line-height:1.02;letter-spacing:-.035em;margin:0}h3{margin:24px 0 12px}.lead{font-size:18px;color:var(--muted);max-width:780px;margin-bottom:28px}
.choice-grid,.mood-grid,.furniture-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.room-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.choice-card{min-height:92px;padding:18px;text-align:left;border:1px solid var(--line);border-radius:18px;background:#fff;color:var(--ink);transition:.18s}.choice-card:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(35,30,25,.08)}.choice-card.selected{border-color:var(--ink);background:var(--ink);color:#fff}
.mood-card{padding:0;overflow:hidden}.mood-card strong,.mood-card small{display:block;padding:0 15px}.mood-card strong{margin-top:13px}.mood-card small{padding-bottom:15px;color:var(--muted)}.mood-card.selected small{color:#ddd}.mood-visual{display:block;height:92px;background:linear-gradient(135deg,#e9dfd1,#947760)}.modern_natural{background:linear-gradient(135deg,#e9e1d4,#ad8d66,#63705f)}.soft_contemporary{background:linear-gradient(135deg,#e5d8d0,#b79b91,#6e6663)}.scandinavian{background:linear-gradient(135deg,#fff,#d7c7ae,#8d9b9a)}.japandi{background:linear-gradient(135deg,#e9dfcb,#8e775e,#343d34)}.classic_modern{background:linear-gradient(135deg,#eee5dc,#9b7b6b,#292626)}.industrial_soft{background:linear-gradient(135deg,#c7b7a6,#6e6258,#2d3030)}.bold_contemporary{background:linear-gradient(135deg,#d5a88e,#5e7259,#25212a)}
.compact-grid{grid-template-columns:repeat(5,1fr)}.compact-grid .choice-card{min-height:62px;padding:13px}
.field{display:flex;flex-direction:column;gap:7px;font-size:14px;font-weight:800}.field input,.field select,.field textarea,.constraint-fields input,.constraint-fields select,.furniture-card select{width:100%;border:1px solid var(--line);background:#fff;border-radius:13px;padding:12px;color:var(--ink);font-size:16px}.field textarea{min-height:110px;resize:vertical}.field small{font-weight:500;color:var(--muted)}.full-width{grid-column:1/-1;margin-top:18px}
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.notice,.empty-state{margin-top:18px;padding:15px 17px;background:#f1e9df;border-left:4px solid var(--accent);border-radius:14px;color:var(--muted)}
.furniture-grid{grid-template-columns:repeat(2,1fr)}.furniture-card{border:1px solid var(--line);border-radius:18px;padding:12px;background:#fff}.furniture-card.selected{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent)}.furniture-select{display:flex;align-items:center;gap:12px;width:100%;border:0;background:none;text-align:left;padding:4px}.furniture-select span span,.furniture-select strong,.furniture-select small{display:block}.furniture-select small{color:var(--muted)}.furniture-icon{display:grid!important;place-items:center;width:44px;height:44px;border-radius:13px;background:var(--paper);font-size:22px}.furniture-card label{display:block;font-size:12px;color:var(--muted);margin-top:10px}
.constraint-picker{display:flex;flex-wrap:wrap;gap:8px}.add-chip{border:1px solid var(--line);border-radius:999px;background:#fff;padding:9px 12px;font-weight:750}.constraint-list{display:grid;gap:12px;margin-top:18px}.constraint-row{border:1px solid var(--line);border-radius:18px;padding:15px;background:#fff}.constraint-row-head{display:flex;justify-content:space-between;align-items:center}.constraint-row-head button{border:0;background:none;color:#9a463c}.constraint-fields{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:12px}.constraint-fields label{font-size:12px;color:var(--muted)}
.file-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.file-list span{padding:7px 10px;border-radius:999px;background:#ede4da;font-size:12px}
.navigation-bar{display:flex;justify-content:space-between;padding:18px 34px;border-top:1px solid var(--line);background:#fffaf4}
.preview-panel{min-width:0}.preview-sticky{position:sticky;top:90px;background:var(--surface);border:1px solid var(--line);border-radius:26px;padding:22px;box-shadow:0 12px 35px rgba(35,30,25,.06)}.preview-heading{display:flex;justify-content:space-between;gap:10px}.status-pill{display:inline-flex;height:fit-content;border-radius:999px;padding:7px 10px;background:#ece3d8;color:var(--accent-dark);font-size:12px;font-weight:850}
.mini-plan{margin:20px 0}.mini-room{display:grid;place-items:center;min-height:180px;border:2px solid var(--ink);background:linear-gradient(90deg,rgba(139,101,72,.08) 1px,transparent 1px),linear-gradient(rgba(139,101,72,.08) 1px,transparent 1px),#fff;background-size:20px 20px}.mini-room span{background:#fffaf4;padding:7px 10px;border-radius:10px;font-size:12px}
.summary-list{display:grid;gap:0}.summary-list>div,.summary-card>div>div{display:flex;justify-content:space-between;gap:14px;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px}.summary-list span,.summary-card span{color:var(--muted)}.summary-list strong,.summary-card strong{text-align:right}.completion-card{margin-top:20px;padding:15px;border-radius:16px;background:var(--paper)}.completion-card>span,.completion-card>strong{display:block}.completion-card strong{font-size:25px;margin-top:3px}
.analysis-loader{display:flex;align-items:center;gap:18px;padding:25px;background:var(--paper);border-radius:20px}.analysis-loader span{display:block;color:var(--muted)}.loader-ring{width:42px;height:42px;border:4px solid #dfd2c6;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.score-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.score-grid article{padding:18px;border:1px solid var(--line);border-radius:18px;background:#fff}.score-grid span,.score-grid strong{display:block}.score-grid span{color:var(--muted);font-size:13px}.score-grid strong{font-size:28px}
.result-toolbar{display:flex;justify-content:space-between;gap:18px;align-items:end;margin:22px 0}.toolbar-label{display:block;font-size:12px;color:var(--muted);margin-bottom:7px}.segmented{display:flex;border:1px solid var(--line);border-radius:999px;padding:4px;background:#fff}.segmented button{border:0;background:none;border-radius:999px;padding:8px 12px}.segmented button.active{background:var(--ink);color:#fff}.palette-row{display:flex;gap:8px}.palette{display:flex;overflow:hidden;width:58px;height:34px;border:2px solid transparent;border-radius:999px;padding:0;background:#fff}.palette i{flex:1}.palette.active{border-color:var(--ink)}
.plan-card{border:1px solid var(--line);border-radius:22px;padding:18px;background:#fff}.plan-head{display:flex;justify-content:space-between;gap:15px;margin-bottom:15px}.room-canvas-wrap{overflow:auto;padding:18px;background:var(--paper);border-radius:18px}.room-canvas{position:relative;width:100%;min-height:360px;border:3px solid var(--ink);background:linear-gradient(90deg,rgba(0,0,0,.045) 1px,transparent 1px),linear-gradient(rgba(0,0,0,.045) 1px,transparent 1px),#faf8f3;background-size:24px 24px}.dimension{position:absolute;font-size:11px;color:var(--muted)}.dimension-top{top:-22px;left:50%;transform:translateX(-50%)}.dimension-side{left:-44px;top:50%;transform:rotate(-90deg)}.plan-item{position:absolute;display:grid;place-items:center;border:1px solid rgba(0,0,0,.25);border-radius:6px;padding:4px;box-shadow:0 5px 12px rgba(0,0,0,.08);font-size:10px;text-align:center;overflow:hidden}.plan-constraint{position:absolute;background:#a74e43;z-index:4}.plan-constraint span{display:none}
.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:16px}.insight-card,.summary-card{border:1px solid var(--line);border-radius:20px;padding:20px;background:#fff}.insight-card h3,.summary-card h3{margin-top:0}.insight-card ul{padding-left:18px;color:var(--muted)}
.offer-card{display:grid;grid-template-columns:1.3fr .7fr;gap:28px;margin-top:22px;padding:28px;border-radius:24px;background:linear-gradient(135deg,#263d2b,#526b55);color:#fff}.offer-card p,.offer-card li,.offer-card small{color:#e4ece0}.offer-card h2{font-size:40px}.offer-price{align-self:center;padding:20px;border-radius:20px;background:rgba(255,255,255,.1)}.offer-price span,.offer-price strong,.offer-price small{display:block}.offer-price strong{font-size:44px;letter-spacing:-.05em}.offer-price button{width:100%;margin-top:12px}.offer-price .primary-btn{background:#fff;color:#203025;border-color:#fff}.offer-price .secondary-btn{color:#fff;border-color:rgba(255,255,255,.4)}
.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);opacity:0;pointer-events:none;background:var(--ink);color:#fff;padding:12px 16px;border-radius:999px;transition:.2s;z-index:100}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1050px){.layout{grid-template-columns:1fr}.preview-panel{order:-1}.preview-sticky{position:static}.mini-plan{display:none}.summary-list{grid-template-columns:repeat(3,1fr);gap:8px}.summary-list>div{display:block;border:1px solid var(--line);border-radius:13px;padding:10px}.summary-list strong{text-align:left;display:block}.completion-card{display:none}}
@media(max-width:720px){.app-header{padding:10px 12px}.header-actions .ghost-btn:first-child{display:none}.app-shell{padding:10px}.main-panel{border-radius:22px}#configuratorForm{padding:22px 17px}.choice-grid,.mood-grid,.furniture-grid,.room-grid,.compact-grid,.form-grid,.constraint-fields,.score-grid,.result-grid,.offer-card{grid-template-columns:1fr}.choice-card{min-height:70px}.result-toolbar{align-items:stretch;flex-direction:column}.segmented{overflow:auto}.palette-row{overflow:auto}.room-canvas{min-height:300px}.navigation-bar{padding:14px 17px}.preview-sticky{padding:15px}.summary-list{grid-template-columns:1fr 1fr}.offer-card h2{font-size:32px}}

/* V2: six-step flow + loader fix */
[hidden]{display:none!important}
.conditional-block{margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.section-note{color:var(--muted);margin-top:-8px}
@media(max-width:720px){.conditional-block{margin-top:22px;padding-top:20px}}

/* V3: interactive move, resize and price estimate */
.estimate-card{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:16px;padding:22px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(135deg,#fff,#f2e8dc)}
.estimate-card strong,.estimate-card small{display:block}.estimate-card strong{font-size:clamp(34px,5vw,54px);line-height:1;letter-spacing:-.05em}.estimate-card small{margin-top:8px;color:var(--accent-dark);font-weight:800}.estimate-card p{max-width:430px;margin:0;color:var(--muted)}
.editor-help{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:12px;padding:10px 12px;border-radius:14px;background:var(--paper);font-size:12px;color:var(--muted)}
.editor-help button{margin-left:auto;border:1px solid var(--line);border-radius:999px;background:#fff;padding:8px 11px;font-weight:800;color:var(--ink)}
.room-canvas{touch-action:none;user-select:none;-webkit-user-select:none}
.plan-item{cursor:grab;touch-action:none;min-width:28px;min-height:28px;z-index:2}
.plan-item:active,.plan-item.editing{cursor:grabbing;z-index:8;box-shadow:0 10px 24px rgba(0,0,0,.2)}
.plan-item-name{font-weight:850;line-height:1.05}.plan-item-size{display:block;margin-top:3px;font-size:9px;opacity:.85;white-space:nowrap}
.resize-handle{position:absolute;right:2px;bottom:2px;width:17px;height:17px;padding:0;border:0;border-radius:4px;background:rgba(255,255,255,.88);box-shadow:0 1px 5px rgba(0,0,0,.22);cursor:nwse-resize}
.resize-handle::before,.resize-handle::after{content:"";position:absolute;right:3px;bottom:3px;background:rgba(0,0,0,.55)}
.resize-handle::before{width:8px;height:2px;transform:rotate(-45deg);transform-origin:right bottom}.resize-handle::after{width:5px;height:2px;transform:translate(-1px,-3px) rotate(-45deg);transform-origin:right bottom}
@media(max-width:720px){.estimate-card{align-items:flex-start;flex-direction:column}.editor-help{align-items:flex-start}.editor-help button{width:100%;margin-left:0}.plan-item-name{font-size:9px}.plan-item-size{font-size:8px}}


/* V4: magnetic snapping, collision handling and rotation */
.plan-item{transition:left .08s ease,top .08s ease,width .08s ease,height .08s ease,box-shadow .12s ease;will-change:left,top,width,height}
.plan-item.editing{transition:none;outline:2px solid rgba(139,101,72,.42);outline-offset:2px}
.rotate-handle{position:absolute;left:3px;top:3px;display:grid;place-items:center;width:21px;height:21px;padding:0;border:0;border-radius:6px;background:rgba(255,255,255,.92);color:#171717;font-size:15px;font-weight:900;line-height:1;box-shadow:0 1px 6px rgba(0,0,0,.22);cursor:pointer;touch-action:manipulation;z-index:3}
.rotate-handle:hover,.rotate-handle:focus-visible{background:#fff;transform:scale(1.06);outline:2px solid rgba(139,101,72,.35)}
.resize-handle{z-index:3}
@media(max-width:720px){.rotate-handle{width:24px;height:24px;font-size:17px}.resize-handle{width:20px;height:20px}}