.vpb-lighting-app{max-width:1120px;margin:24px auto;color:#1c2938;font:15px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}.vpb-lighting-app *{box-sizing:border-box}.vpb-lc-head{background:linear-gradient(120deg,#102b4c,#1c527b);color:#fff;padding:28px;border-radius:18px;display:flex;justify-content:space-between;align-items:center;gap:20px}.vpb-lc-head h2{font-size:clamp(22px,3vw,30px);margin:5px 0;color:#fff}.vpb-lc-head p{margin:0;color:#d8e5f0}.vpb-lc-kicker{font-size:11px;letter-spacing:1.8px;color:#f2c46d;font-weight:800}.vpb-lc-brand{border:1px solid #ffffff70;border-radius:12px;padding:12px 18px;text-align:center;line-height:1.1;font-size:24px;font-weight:900;letter-spacing:2px}.vpb-lc-brand b{font-size:10px;letter-spacing:1px}.vpb-lc-tabs{display:flex;gap:8px;margin:18px 0;flex-wrap:wrap}.vpb-lc-tabs button,.vpb-lc-primary,.vpb-lc-secondary,.vpb-lc-ghost{border:0;border-radius:9px;padding:12px 17px;font-weight:750;cursor:pointer}.vpb-lc-tabs button{background:#edf2f6;color:#29435d}.vpb-lc-tabs button.active,.vpb-lc-primary{background:#174b76;color:#fff}.vpb-lc-secondary{background:#e4edf5;color:#174b76}.vpb-lc-ghost{background:#f4f5f6;color:#4c5965}.vpb-lc-panel{display:none}.vpb-lc-panel.active{display:block}.vpb-lc-grid{display:grid;gap:16px}.vpb-lc-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.vpb-lc-card{background:#fff;border:1px solid #e0e7ed;border-radius:14px;padding:20px;margin-bottom:16px;box-shadow:0 4px 16px #16324a08}.vpb-lc-card h3{font-size:18px;margin:0 0 15px;color:#173b5b}.vpb-lc-card label{display:block;font-weight:650;font-size:13px;margin:0 0 13px;color:#34495e}.vpb-lc-card input,.vpb-lc-card select{display:block;width:100%;height:43px;margin-top:6px;border:1px solid #cbd5df;border-radius:8px;padding:8px 11px;background:#fff;color:#172b3e;font:inherit}.vpb-lc-note,.vpb-lc-muted{font-size:13px;color:#667789}.vpb-lc-note{background:#f3f7fa;border-left:3px solid #e1ad49;padding:12px;border-radius:6px;margin-top:14px}.vpb-lc-specs{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin:10px 0 16px}.vpb-lc-specs div{background:#f2f6f9;padding:10px;border-radius:8px}.vpb-lc-specs b,.vpb-lc-specs small{display:block}.vpb-lc-specs small{color:#6d7c89;font-size:11px}.vpb-lc-primary{width:100%;margin-top:5px}.vpb-lc-results{margin:16px 0}.vpb-lc-result-placeholder{padding:20px;border:1px dashed #bdcbd7;border-radius:12px;color:#6d7c89;text-align:center}.vpb-lc-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.vpb-lc-metrics div{padding:16px;background:#edf4f8;border-radius:12px}.vpb-lc-metrics small,.vpb-lc-metrics strong{display:block}.vpb-lc-metrics small{color:#607587;font-size:12px}.vpb-lc-metrics strong{font-size:22px;color:#174b76;margin-top:5px}.vpb-lc-result-detail{padding:14px 2px}.vpb-lc-advice{margin-top:16px}.vpb-lc-layout-tools{display:flex;align-items:end;gap:10px;flex-wrap:wrap}.vpb-lc-layout-tools label{max-width:110px;flex:1}.vpb-lc-layout-tools button{margin-bottom:13px}.vpb-lc-room{margin-top:18px;border:1px solid #dce5ec;border-radius:12px;padding:16px;background:#f8fafb}.vpb-lc-room-label{font-weight:700;margin-bottom:12px}.vpb-lc-layout-grid{display:grid;grid-template-columns:repeat(var(--cols,5),minmax(28px,1fr));gap:8px;max-width:700px;margin:auto}.vpb-lc-cell{aspect-ratio:1;border:1px dashed #9aabba;border-radius:50%;background:#fff;color:#9aabba;font-size:20px;cursor:pointer}.vpb-lc-cell.on{background:#ffdf8b;border:2px solid #d69a25;color:#76500b;box-shadow:0 0 0 4px #ffdf8b55}.vpb-lc-layout-summary{margin-top:12px;font-weight:700;color:#174b76}.vpb-lc-line{display:flex;justify-content:space-between;gap:10px;padding:12px 0;border-bottom:1px solid #e7edf1}.vpb-lc-total{font-size:20px;font-weight:850;color:#174b76;padding:16px 0}.vpb-lc-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.vpb-lc-status{font-size:13px;margin-top:12px;color:#17623b}.vpb-lc-footer{text-align:center;color:#7b8995;font-size:12px;padding:15px}.vpb-lc-app button:focus-visible,.vpb-lighting-app input:focus{outline:2px solid #d69a25;outline-offset:2px}@media(max-width:700px){.vpb-lc-head{padding:20px}.vpb-lc-brand{font-size:18px;padding:10px}.vpb-lc-grid.two{grid-template-columns:1fr}.vpb-lc-metrics{grid-template-columns:repeat(2,1fr)}.vpb-lc-metrics strong{font-size:19px}.vpb-lc-card{padding:15px}.vpb-lc-actions{grid-template-columns:1fr}.vpb-lc-tabs{display:grid;grid-template-columns:1fr}.vpb-lc-tabs button{width:100%}}
/* V2: proportional floor plan, draggable fixture markers and estimate breakdown */
.vpb-lc-layout-canvas{position:relative;width:min(100%,760px);aspect-ratio:5/4;margin:22px auto 12px;border:2px solid #315b7d;border-radius:5px;background-color:#fff;background-image:linear-gradient(#e8eef3 1px,transparent 1px),linear-gradient(90deg,#e8eef3 1px,transparent 1px);background-size:5% 5%;touch-action:pan-y;overflow:visible}
.vpb-lc-light-marker{position:absolute;transform:translate(-50%,-50%);width:34px;height:34px;border-radius:50%;border:2px solid #b77b10;background:#ffdf8b;color:#6e4900;font-size:19px;line-height:1;cursor:grab;touch-action:none;box-shadow:0 2px 7px #0002;z-index:2}
.vpb-lc-light-marker:active{cursor:grabbing}.vpb-lc-light-marker.selected{outline:3px solid #174b7666;outline-offset:3px;background:#f7bd4e}
.vpb-lc-room-axis{position:absolute;color:#52687a;font-size:11px;font-weight:700}.vpb-lc-room-axis.x{top:-23px;left:50%;transform:translateX(-50%)}.vpb-lc-room-axis.y{left:-32px;top:50%;transform:translateY(-50%) rotate(-90deg)}
.vpb-lc-layout-tools{align-items:center}.vpb-lc-layout-tools button{margin:0}.vpb-lc-layout-tools button:disabled{opacity:.45;cursor:not-allowed}
.vpb-lc-cost-breakdown{background:#f5f8fa;border-radius:10px;padding:12px;margin-top:12px}.vpb-lc-cost-breakdown div{display:flex;justify-content:space-between;gap:12px;padding:5px 0;font-size:13px}.vpb-lc-cost-breakdown div:last-child{border-top:1px solid #d9e2e9;margin-top:5px;padding-top:10px}.vpb-lc-line small{display:block;color:#71808d;font-size:11px;margin-top:3px}
@media(max-width:700px){.vpb-lc-layout-canvas{width:calc(100% - 18px);aspect-ratio:5/4}.vpb-lc-light-marker{width:30px;height:30px;font-size:17px}.vpb-lc-layout-tools{display:grid;grid-template-columns:1fr 1fr}.vpb-lc-layout-tools button{width:100%;min-height:42px}.vpb-lc-layout-tools label{max-width:none}}
@media print{.vpb-lighting-app{max-width:none}}
/* V3 smart-home solution recommendations */
.vpb-lc-smart-list{display:grid;gap:10px}.vpb-lc-smart-item{display:flex!important;align-items:flex-start;gap:12px;padding:13px;border:1px solid #dfe7ed;border-radius:10px;background:#fbfcfd;cursor:pointer}.vpb-lc-smart-item input{width:19px!important;height:19px!important;flex:0 0 19px;margin:2px 0 0!important;accent-color:#174b76}.vpb-lc-smart-item span{display:block;min-width:0}.vpb-lc-smart-item b,.vpb-lc-smart-item small,.vpb-lc-smart-item em{display:block}.vpb-lc-smart-item small{font-weight:400;color:#647687;line-height:1.45;margin:4px 0}.vpb-lc-smart-item em{font-size:12px;color:#174b76;font-style:normal;font-weight:700}.vpb-lc-scene{padding:11px 13px;margin:7px 0;border-radius:8px;background:#f1f6f9;border-left:3px solid #d4a34b;color:#29465f;font-size:14px}
/* V4: drawing import, fixture library and concept 3D viewer */
.vpb-lc-drawing-import{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:14px;border:1px dashed #9eb2c2;border-radius:12px;background:#f6f9fb;margin:14px 0}.vpb-lc-drawing-import>div{flex:1 1 230px}.vpb-lc-drawing-import b,.vpb-lc-drawing-import small{display:block}.vpb-lc-drawing-import small{font-size:12px;color:#65798a;margin-top:4px}.vpb-lc-upload-btn{display:inline-flex!important;align-items:center;justify-content:center;background:#174b76;color:#fff!important;border-radius:9px;padding:11px 15px;cursor:pointer;font-weight:800!important;margin:0!important}.vpb-lc-drawing-status{font-size:12px;color:#526b7e;margin:7px 0 12px}.vpb-lc-layout-canvas.has-drawing{background-color:#fff;background-position:center;background-repeat:no-repeat;background-size:100% 100%;border:2px solid #315b7d}.vpb-lc-3d-heading,.vpb-lc-library-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.vpb-lc-3d-chip{background:#eaf2f8;color:#174b76;border-radius:20px;padding:7px 12px;font-size:11px;font-weight:900;white-space:nowrap}.vpb-lc-3d-controls{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:16px 0}.vpb-lc-3d-controls label{background:#f5f8fa;border-radius:9px;padding:10px}.vpb-lc-3d-controls strong{float:right;color:#174b76}.vpb-lc-3d-controls input[type=range]{height:24px;padding:0}.vpb-lc-3d-controls .vpb-lc-toggle{display:flex;align-items:center;gap:8px}.vpb-lc-3d-controls .vpb-lc-toggle input{width:18px;height:18px;margin:0}.vpb-lc-3d-stage{position:relative;background:linear-gradient(145deg,#f2f6f9,#dfe8ef);border-radius:13px;overflow:hidden}.vpb-lc-3d-stage canvas{display:block;width:100%;height:auto}.vpb-lc-3d-watermark{position:absolute;right:14px;bottom:10px;font-size:10px;letter-spacing:1.5px;color:#49647a;font-weight:800}.vpb-lc-3d-legend{display:flex;gap:16px;flex-wrap:wrap;margin:12px 0;font-size:12px;color:#52697c}.vpb-dot{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:5px}.vpb-dot.fixture{background:#173f60}.vpb-dot.beam{background:#ffd36e}.vpb-dot.room{background:#dbe6ee;border:1px solid #9fb1bf}.vpb-lc-3d-summary{padding:11px;background:#f3f7fa;border-radius:8px;font-size:13px;color:#34536c}.vpb-lc-fixture-mini-note{font-size:12px;color:#6a7d8c}.vpb-lc-library-tools{display:grid;grid-template-columns:2fr 1fr;gap:10px;margin:14px 0}.vpb-lc-library-tools input,.vpb-lc-library-tools select{height:43px;border:1px solid #cbd5df;border-radius:8px;padding:8px 11px;font:inherit}.vpb-lc-fixture-library{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.vpb-lc-fixture-card{display:flex;align-items:center;gap:12px;padding:13px;border:1px solid #e0e7ed;border-radius:11px;background:#fff;min-width:0}.vpb-lc-fixture-icon{width:42px;height:42px;flex:0 0 42px;border-radius:11px;background:#edf4f8;color:#d39a2f;display:grid;place-items:center;font-size:23px}.vpb-lc-fixture-info{flex:1;min-width:0}.vpb-lc-fixture-info b,.vpb-lc-fixture-info small,.vpb-lc-fixture-info strong{display:block}.vpb-lc-fixture-info b{font-size:13px;color:#193d5a}.vpb-lc-fixture-info small{font-size:11px;color:#71808d;margin-top:3px}.vpb-lc-fixture-info strong{font-size:12px;color:#174b76;margin-top:5px}.vpb-lc-fixture-card button{padding:9px 11px;white-space:nowrap;font-size:12px}
@media(max-width:700px){.vpb-lc-3d-controls{grid-template-columns:1fr 1fr}.vpb-lc-fixture-library{grid-template-columns:1fr}.vpb-lc-library-tools{grid-template-columns:1fr}.vpb-lc-fixture-card{align-items:flex-start}.vpb-lc-fixture-card button{align-self:center}.vpb-lc-3d-heading{display:block}.vpb-lc-3d-chip{display:inline-block;margin:8px 0}}