:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,label.upload-label,select{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[tabindex]:focus-visible,.upload-label:focus-visible{outline:3px solid #8baf45;outline-offset:4px}button,a,input,textarea,select{ -webkit-tap-highlight-color:transparent}button{transition:background .15s,border-color .15s,transform .15s}button:not(:disabled):active{transform:translateY(1px)}[hidden]{display:none!important}h1,h2,h3,h4,p{margin:0}a{color:inherit}.topbar{height:78px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 4.5vw}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-size:20px;letter-spacing:-.5px}.brand strong{font-weight:750}.brand-mark{display:flex;align-items:center;justify-content:center;width:38px;height:38px;background:var(--green);color:white;font-size:21px;font-weight:700;letter-spacing:-4px;padding-right:4px}.brand-mark span{font-size:17px;color:var(--accent);transform:translateY(3px)}.environment{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:10px;letter-spacing:1.3px;display:flex;align-items:center;gap:8px;color:var(--muted)}.status-dot{width:6px;height:6px;background:#75964a;border-radius:50%}main{max-width:1600px;margin:auto;padding:38px 4.5vw 20px}.intro{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;margin-bottom:30px}.eyebrow{font-size:10px;font-weight:750;letter-spacing:1.6px;color:var(--muted)}h1{font-size:clamp(26px,2.65vw,40px);font-weight:600;line-height:1.2;letter-spacing:-1.35px;margin-top:12px}h1 span{color:#6c7e71}.intro-note{max-width:285px;font-size:13px;line-height:1.7;color:var(--muted);padding-bottom:3px}.workspace{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(360px,1fr);gap:22px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:9px;overflow:hidden}.panel-heading{height:66px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:0 22px;border-bottom:1px solid var(--line)}.panel-heading>div{display:flex;align-items:center;gap:10px}h2{font-size:14px;font-weight:650;letter-spacing:-.2px}.step{font-family:ui-monospace,SFMono-Regular,monospace;font-size:10px;border:1px solid #dce3db;padding:4px;color:var(--muted);border-radius:3px}.secondary-button{font-size:11px;border:1px solid var(--line);padding:8px 12px;background:#fff;color:var(--ink);border-radius:5px;text-align:center;cursor:pointer}.secondary-button:hover{background:#f4f7f0}.upload-label.is-disabled{pointer-events:none;opacity:.45}.file-input{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.file-input:focus-visible+.drop-zone{outline:3px solid #8baf45;outline-offset:-5px}.drop-zone{min-height:442px;margin:22px;border:1px dashed #bdcbbf;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-direction:column;text-align:center;cursor:pointer;background:radial-gradient(#d7dfd4 .75px,transparent .75px);background-size:16px 16px;padding:25px}.drop-zone.drag-over{background-color:#ecf4db;border-color:#6a8d48}.drop-zone h3{font-size:18px;letter-spacing:-.45px;font-weight:600;background:#fff;padding:10px 12px 4px}.drop-zone p{font-size:13px;color:var(--muted);background:#fff;padding:5px 10px}.link-look{text-decoration:underline;text-underline-offset:3px;color:var(--green)}.drop-zone small{font-size:10px;color:var(--muted);background:#fff;padding:9px 10px}.plan-icon{position:relative;width:102px;height:110px;border:2px solid #427260;background:#f9fcf1;box-shadow:8px 8px 0 #e4eadf;margin-bottom:24px}.plan-icon:before{content:"";position:absolute;inset:17px;border:3px solid #427260}.plan-icon:after{content:"";position:absolute;left:45px;top:17px;width:3px;height:45px;background:#427260}.plan-icon span{position:absolute;top:60px;left:17px;width:66px;height:3px;background:#427260}.plan-icon i{position:absolute;top:60px;left:50px;width:3px;height:30px;background:#427260}.plan-icon b{position:absolute;top:33px;left:15px;height:15px;width:7px;background:#d9ec8e;border-top:1px solid #427260;border-bottom:1px solid #427260}.source-footer{padding:15px 22px;border-top:1px solid var(--line);display:flex;align-items:center;gap:8px;color:var(--muted);font-size:10px;line-height:1.5}.small-square{width:6px;height:6px;flex-shrink:0;border:1px solid #6d8c75}.connection-label{font-size:10px;color:var(--muted)}.question-form{padding:22px}.question-form>label{display:block;font-size:12px;font-weight:600;margin-bottom:10px}textarea{width:100%;resize:vertical;min-height:100px;max-height:260px;border:1px solid #cdd8cd;border-radius:6px;padding:13px 14px;font-size:13px;line-height:1.65;color:var(--ink);background:#fcfdf9}textarea::placeholder{color:#849185}textarea:disabled{background:#f7f8f5}.question-meta{display:flex;justify-content:space-between;gap:15px;font-size:10px;line-height:1.5;color:var(--muted);margin-top:7px}#character-count{white-space:nowrap}.suggestions{display:flex;flex-wrap:wrap;gap:6px;margin:16px 0 19px}.suggestions button{background:#fff;border:1px solid var(--line);padding:6px 8px;color:var(--muted);border-radius:4px;font-size:10px}.suggestions button:not(:disabled):hover{background:#f1f5e9;border-color:#b7c7ab}.primary-button{width:100%;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;background:var(--green);color:white;border:1px solid var(--green);border-radius:5px;font-size:12px;font-weight:600}.primary-button>span:last-child{font-size:18px;line-height:14px;color:var(--accent)}.primary-button:not(:disabled):hover{background:#24604f}.answer-empty{padding:30px 22px 34px;border-top:1px solid var(--line);background:#fafbf7}.answer-empty h3{font-size:19px;line-height:1.4;font-weight:550;letter-spacing:-.5px;margin:12px 0}.answer-empty>p{font-size:12px;line-height:1.8;color:var(--muted);max-width:390px}.status-legend{display:flex;flex-wrap:wrap;gap:15px;margin-top:25px;font-size:9px;color:var(--muted)}.status-legend>span{display:flex;align-items:center;gap:6px}.legend-dot{height:5px;width:5px;border-radius:50%;background:#4b8060}.legend-dot.missing{background:#b37d38}.legend-dot.uncertain{background:#8993a4}.notice{display:flex;align-items:center;justify-content:space-between;gap:18px;background:#fff9ea;border:1px solid #e9dbb7;border-radius:6px;padding:13px 17px;margin-bottom:20px;font-size:12px;color:#6b552d}.notice strong{font-size:12px;font-weight:650}.notice p{margin-top:4px;font-size:11px;line-height:1.6}.text-button{flex-shrink:0;background:transparent;border:0;color:inherit;font-size:11px;text-decoration:underline;text-underline-offset:3px}.document-bar{display:flex;justify-content:space-between;gap:12px;padding:16px 20px 10px;font-size:11px}.document-name{display:flex;gap:8px;align-items:center;min-width:0}#filename{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-symbol{font-size:16px;color:#668568}#page-count{white-space:nowrap}.muted{color:var(--muted)}.document-warnings{padding:10px 20px;font-size:11px;line-height:1.6;background:#fff8e8;color:#74592c}.viewer-toolbar{padding:8px 16px 12px;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:10px;color:var(--muted)}.page-controls{display:flex;align-items:center;gap:10px}.icon-button{border:1px solid var(--line);border-radius:4px;background:#fff;width:28px;height:27px;color:var(--ink)}.icon-button:not(:disabled):hover{background:#f0f5e9}.zoom-control{display:flex;align-items:center;gap:6px}select{font-size:10px;border:1px solid var(--line);border-radius:4px;padding:6px;background:#fff;color:var(--ink)}.viewer{height:480px;overflow:auto;padding:20px;background-color:#edf0e9;background-image:linear-gradient(#dce2d780 1px,transparent 1px),linear-gradient(90deg,#dce2d780 1px,transparent 1px);background-size:24px 24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.image-stage{position:relative;width:100%;line-height:0;background:white;box-shadow:0 3px 16px #16352b10}#page-image{display:block;width:100%;height:auto}.evidence-overlay{position:absolute;border:2px solid #b5cf56;background:#d9ec8e55;box-shadow:0 0 0 1px #24453580;pointer-events:none}.evidence-overlay>span{position:absolute;top:0;left:0;line-height:1.4;font-size:10px;padding:2px 5px;color:#fff;background:#245846}.viewer-caption{min-height:40px;padding:12px 20px;font-size:10px;line-height:1.6;color:var(--muted)}.inline-progress{display:flex;align-items:center;gap:9px;padding:15px 22px;font-size:12px;color:var(--muted)}.spinner{display:block;flex-shrink:0;width:16px;height:16px;border:2px solid #cbd7bd;border-top-color:var(--green);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.ask-progress{display:flex;gap:12px;padding:20px 22px;border-top:1px solid var(--line);background:#f6f9ee;font-size:12px}.ask-progress p{font-size:11px;line-height:1.7;color:var(--muted);margin-top:5px}.error-message{background:#fff2ee;color:#943f2d;border:1px solid #f0cfc6;border-radius:5px;padding:12px 14px;font-size:12px;line-height:1.65}.panel-error{margin:12px 22px 20px}.answer-error{margin:0 22px 22px}.result{border-top:1px solid var(--line);padding:22px}.result-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.result-status{display:inline-flex;border-radius:3px;padding:5px 8px;background:#e9f2db;color:#35542a;font-size:10px;font-weight:650}.result-status.insufficient{background:#fff1d9;color:#855b25}.result-status.unclear{background:#edf0f5;color:#566279}.result-scope{color:var(--muted);font-size:10px;text-align:right}.result h3{font-size:17px;font-weight:650;letter-spacing:-.3px;margin-bottom:10px}.answer-text{font-size:14px;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere}.result-section{margin-top:24px}.result h4{font-size:11px;font-weight:650;margin-bottom:10px}.evidence-list{display:flex;flex-direction:column;gap:8px}.evidence-item{display:grid;grid-template-columns:24px 1fr auto;gap:9px;align-items:start;width:100%;border:1px solid var(--line);border-radius:5px;background:#fff;padding:11px;text-align:left;color:var(--ink)}.evidence-item:hover,.evidence-item[aria-pressed="true"]{background:#f3f7e9;border-color:#93ac69}.evidence-number{border:1px solid #c7d5af;border-radius:3px;font-family:ui-monospace,monospace;font-size:10px;text-align:center;line-height:22px;background:#edf4dd}.evidence-copy strong{font-size:11px;display:block;font-weight:600;line-height:1.6}.evidence-copy p{font-size:11px;line-height:1.6;color:var(--muted);margin-top:3px;overflow-wrap:anywhere}.evidence-page{font-size:9px;white-space:nowrap;color:var(--muted);padding-top:4px}.evidence-note{margin-top:9px;font-size:10px;line-height:1.6;color:var(--muted)}.result-section ul{padding-left:18px;margin:0;color:#735e3d;font-size:12px;line-height:1.8}.next-action{padding:14px;background:#f3f6ed;border-left:2px solid #a9bd83;margin-top:20px}.next-action p,.proposal p{font-size:12px;line-height:1.7;white-space:pre-wrap;overflow-wrap:anywhere}.next-action h4,.proposal h4{margin-bottom:6px}.proposal{margin-top:16px;padding:14px;border:1px dashed #c9ae78;background:#fffbf1;color:#7b602e}.proposal small{display:block;margin-top:8px;font-size:10px;line-height:1.6}.run-details{margin-top:24px;border-top:1px solid var(--line);padding-top:14px;color:var(--muted);font-size:10px}.run-details summary{cursor:pointer}.run-details dl{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:13px 0}.run-details dd{margin:0;text-align:right}.run-details p{font-size:10px;line-height:1.6}.footer{display:flex;justify-content:space-between;gap:15px;margin-top:24px;font-size:9px;letter-spacing:.65px;color:#7c897e}.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}
@media(min-width:1500px){.viewer{height:570px}.drop-zone{min-height:530px}}@media(max-width:950px){main{padding:28px 24px 20px}.topbar{padding:0 24px}.workspace{grid-template-columns:minmax(0,1fr) minmax(330px,1fr);gap:15px}.intro-note{max-width:230px}.panel-heading{padding:0 16px}.question-form,.result{padding:18px}.connection-label{font-size:9px}.drop-zone{margin:16px;min-height:420px}.viewer{height:420px;padding:12px}.suggestions{gap:5px}.suggestions button{font-size:9px;padding:6px}}@media(max-width:720px){.topbar{height:66px;padding:0 18px}.environment{font-size:8px;letter-spacing:.8px}.brand{font-size:17px;gap:9px}.brand-mark{width:32px;height:32px;font-size:19px}.intro{align-items:start;flex-direction:column;gap:14px;margin-bottom:22px}.intro-note{max-width:450px;font-size:12px}main{padding:26px 16px 18px}h1{font-size:29px;letter-spacing:-1px}.workspace{grid-template-columns:minmax(0,1fr);gap:18px}.drop-zone{min-height:290px}.plan-icon{width:86px;height:96px;margin-bottom:18px}.plan-icon span{width:49px}.plan-icon i{height:17px}.viewer{height:420px}.notice{align-items:flex-start}.notice p{font-size:11px}.connection-label{font-size:10px}.suggestions button{font-size:10px;padding:6px 8px}.footer{font-size:8px;line-height:1.7}.footer>span:last-child{text-align:right}.answer-empty{padding:25px 20px}.source-footer{padding:12px 18px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
/* Source-linked 3D workspace */
.view-tabs{display:flex;flex-wrap:wrap;gap:6px;padding:8px 18px 12px;border-bottom:1px solid var(--line)}.view-tabs button{font-size:11px;padding:8px 10px;background:#fff;border:1px solid var(--line);color:var(--ink);border-radius:4px}.view-tabs button[aria-pressed="true"]{background:var(--green);color:white;border-color:var(--green)}#generate-scene{margin-left:auto;color:var(--green);background:#f0f5e5}.model-toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:12px 18px 7px}.scene-badge{font-size:10px;font-weight:650;color:#355c45;background:#edf4e5;padding:6px 8px;border-radius:3px}.scene-badge.unscaled{background:#fff1d6;color:#79551e}.model-switches{display:flex;gap:18px;flex-wrap:wrap;padding:8px 18px 12px;font-size:11px;color:var(--muted)}.model-switches label{display:flex;gap:6px;align-items:center;cursor:pointer}.model-switches input{accent-color:var(--green)}.model-canvas-container{height:470px;width:100%;position:relative;background:#eef1e9;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.model-canvas-container canvas{width:100%;height:100%;display:block;touch-action:none}.scene-summary{font-size:11px;color:var(--muted);line-height:1.7;padding:0 18px 10px}.element-picker{padding:12px 18px;display:flex;gap:10px;align-items:center;border-top:1px solid var(--line);font-size:11px}.element-picker label{white-space:nowrap}.element-picker select{width:100%;min-width:0;max-width:100%}.element-inspector{padding:18px;border-top:1px solid var(--line);background:#fafbf7}.element-inspector h3{font-size:15px;margin-bottom:7px;overflow-wrap:anywhere}.element-inspector h4{font-size:11px;margin:18px 0 8px}.element-inspector p{font-size:11px;line-height:1.7;color:var(--muted)}.element-inspector dl{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:8px;font-size:10px;line-height:1.6}.element-inspector dt{color:var(--muted);overflow-wrap:anywhere}.element-inspector dd{margin:0;overflow-wrap:anywhere}#element-assumptions-section{border-left:2px solid #d4a856;padding-left:12px;color:#79551e}#element-source{margin-top:12px}.model-evidence-item{display:block;width:100%;background:white;border:1px solid var(--line);border-radius:5px;padding:11px;text-align:left;color:var(--ink)}.model-evidence-item:hover{background:#f3f7e9;border-color:#93ac69}.model-evidence-item strong{display:block;font-size:11px;line-height:1.7}.model-evidence-item span{display:block;font-size:10px;color:var(--muted);line-height:1.7;overflow-wrap:anywhere}.model-evidence-item:disabled{opacity:1;cursor:default}.model-error{padding:25px;color:#79551e;font-size:12px;line-height:1.7}
@media(max-width:720px){.model-canvas-container{height:350px}.view-tabs{padding:8px 12px 12px}.view-tabs button{font-size:10px}.element-picker{flex-direction:column;align-items:stretch;gap:6px}.model-toolbar{padding:12px 12px 7px}}
#model-evidence-list{max-height:360px;overflow:auto;padding-right:4px;overscroll-behavior:contain}
.model-annotations{position:absolute;inset:0;overflow:hidden;pointer-events:none}.unresolved-annotation{position:absolute;transform:translate(-50%,-50%);pointer-events:auto;min-width:28px;height:28px;border:1px dashed #9d631e;border-radius:50%;background:#fff2ce;color:#764b17;font-size:14px;font-weight:750;line-height:1;box-shadow:0 1px 5px #30200a30;padding:5px 8px}.unresolved-annotation.floor-annotation{border-radius:4px;height:auto;min-height:28px;max-width:80%;font-size:10px;line-height:1.4;overflow-wrap:anywhere}.unresolved-annotation:hover{background:#ffe3a0}.unresolved-annotation:not(:disabled):active{transform:translate(-50%,-50%)}.unresolved-model-notice{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap;padding:10px 18px;background:#fff6e5;color:#79551e;border-top:1px solid #eadcbe;font-size:11px}.unresolved-model-notice small{flex-basis:100%;font-size:10px;line-height:1.5}
#inventory-details{font-size:10px;line-height:1.7;margin-top:10px;color:var(--muted)}#inventory-details summary{cursor:pointer}#inventory-kind-counts{margin:8px 0;overflow-wrap:anywhere}#inventory-items{max-height:260px;overflow:auto;display:flex;flex-direction:column;gap:5px}.inventory-source-item{border:1px solid var(--line);background:white;border-radius:3px;padding:7px 9px;text-align:left;color:var(--ink);font-size:10px;line-height:1.6;overflow-wrap:anywhere}
.comparison-controls{padding:12px 18px;background:#f6f8f1;border-bottom:1px solid var(--line);font-size:11px}.comparison-enable{display:flex;align-items:center;gap:7px;font-weight:600}.comparison-controls input[type=checkbox]{accent-color:var(--green)}.comparison-toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:12px 0}.comparison-toolbar select{flex:1;min-width:100px;max-width:100%}#comparison-opacity{width:80px;accent-color:var(--green)}#comparison-opacity-value{min-width:28px}.comparison-layers{display:flex;gap:9px 12px;flex-wrap:wrap}.comparison-layers label{display:flex;align-items:center;gap:4px;font-size:10px}.comparison-layers i{width:8px;height:8px;background:var(--layer-color)}.layer-spaces{--layer-color:#347c57}.layer-walls{--layer-color:#cf472e}.layer-openings{--layer-color:#087cb4}.layer-features{--layer-color:#7b4db1}.layer-unresolved{--layer-color:#a56300}#comparison-note{font-size:10px;line-height:1.6;margin-top:9px;color:var(--muted)}.comparison-overlay{position:absolute;inset:0;width:100%;height:100%;overflow:hidden;pointer-events:none;z-index:1}.comparison-item{pointer-events:visiblePainted;cursor:pointer;outline:none}.comparison-item:focus-visible path{stroke:#172f29;stroke-width:3}.comparison-unresolved path{stroke-dasharray:5 4}.evidence-overlay{z-index:2}.comparison-selection{padding:12px 18px;background:#f5f7ef;border-top:1px solid var(--line);font-size:12px}.comparison-selection p{font-size:11px;line-height:1.7;color:var(--muted);margin:6px 0 9px;overflow-wrap:anywhere}.model-inventory{padding:15px 18px;border-top:1px solid var(--line);background:#fafbf7}.model-inventory h3{font-size:12px;margin-bottom:7px}#inventory-counts{font-size:11px;line-height:1.6}.inventory-caveat{font-size:10px;color:var(--muted);line-height:1.7;margin-top:5px}.unresolved-items{display:flex;flex-direction:column;gap:7px;max-height:300px;overflow:auto;margin-top:10px}.unresolved-item{padding:9px 11px;background:#fff8e8;border:1px dashed #bc9458;border-radius:4px;color:#765321;text-align:left;overflow-wrap:anywhere}.unresolved-item strong,.unresolved-item span{display:block;font-size:10px;line-height:1.6}.unresolved-item span{margin-top:4px}#no-model-geometry{margin-bottom:12px}
.floor-source-link{max-width:100%;overflow-wrap:anywhere}
.floor-controls{display:flex;align-items:center;gap:10px;padding:8px 18px;font-size:11px}.floor-controls select{min-width:0;max-width:45%;flex:1}.floor-controls a{margin-left:auto;text-decoration:none;white-space:nowrap}.layout-note{padding:10px 18px;font-size:11px;line-height:1.65;color:#79551e;background:#fff6e3;border-top:1px solid #eadcbe}.floor-source-links{display:flex;gap:7px;flex-wrap:wrap;padding:0 18px 12px}.floor-source-link{border:1px solid #c9d6bd;background:#f4f7ed;color:var(--green);font-size:10px;padding:7px 9px;border-radius:4px;text-align:left;line-height:1.5}.floor-source-link:hover{background:#e8f0d9}.floor-details{font-size:11px;margin:0 18px 14px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px}.floor-details summary{cursor:pointer}.floor-details h4{font-size:12px;margin:15px 0 8px;color:var(--ink)}.floor-details dl{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2fr);gap:8px;font-size:10px;line-height:1.65}.floor-details dt,.floor-details dd{margin:0;overflow-wrap:anywhere}.floor-assumptions{border-left:2px solid #d4a856;padding-left:10px;color:#79551e}.scene-badge{line-height:1.5}#floor-details-content{max-height:350px;overflow:auto;padding-right:4px}@media(max-width:720px){.floor-controls{flex-wrap:wrap;padding:8px 12px}.floor-controls select{max-width:none}.floor-controls a{font-size:10px}.model-switches{gap:12px}}

/* Concept mode uses the same model and a spacious, quiet presentation surface. */
.concept-intro,.concept-cutaway-control{display:none}
.concept-mode{background:#f1eee8}
.concept-mode main{max-width:1900px;padding-top:24px}
.concept-mode .intro{display:none}
.concept-mode .workspace{grid-template-columns:minmax(0,1fr) 330px;gap:20px}
.concept-mode .panel{border-color:#ded9d0;border-radius:12px}
.concept-mode .source-panel{background:#faf8f3;box-shadow:0 8px 32px #3b302a08}
.concept-mode .source-panel>.panel-heading{height:52px;background:#fffdf9;border-color:#e8e3da}
.concept-mode .source-panel .step{display:none}
.concept-mode .document-bar{padding:12px 20px 5px;color:#7c766b}
.concept-mode .view-tabs{padding:9px 20px 15px;border-color:#e5dfd5;gap:6px}
.concept-mode .view-tabs button{background:transparent;border-color:transparent;color:#777267;border-radius:6px;padding:9px 12px}
.concept-mode .view-tabs button:hover{background:#eae6dd}
.concept-mode .view-tabs button[aria-pressed="true"]{background:#35493d;color:#fff;border-color:#35493d;box-shadow:0 2px 5px #22372a12}
.concept-mode .concept-intro{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:24px 26px 12px}
.concept-intro .eyebrow{font-size:9px;letter-spacing:1.8px;color:#8b8375}
.concept-intro h3{font-size:25px;font-weight:500;letter-spacing:-.8px;margin-top:7px;color:#3e463b}
.concept-palette{display:flex;align-items:center;gap:5px}
.concept-palette>span:not(.palette-copy){width:22px;height:22px;border-radius:50%;border:1px solid #62574417;box-shadow:inset 0 0 0 2px #ffffff33}
.swatch-oak{background:repeating-linear-gradient(88deg,#c1a17b 0 3px,#c8ab87 3px 5px,#ba9972 5px 6px)}
.swatch-stone{background:#e4dfd3}
.swatch-sage{background:#77816a}
.palette-copy{font-size:10px;color:#8b8375;margin-left:7px}
.concept-mode .model-toolbar{padding:8px 26px;gap:12px}
.concept-mode .concept-cutaway-control{display:flex;align-items:center;gap:7px;font-size:11px;color:#4d584b;cursor:pointer}
.concept-cutaway-control input{width:14px;height:14px;accent-color:#536a51}
.concept-cutaway-control span{font-size:10px;color:#999080;margin-left:4px}
.concept-mode #fit-model{margin-left:auto;background:#fffdf8;color:#5b6253;border-color:#dbd7cc;border-radius:6px;padding:8px 13px}
.concept-mode .floor-controls{padding:2px 26px 13px;color:#847b6b;gap:9px}
.concept-mode .floor-controls select{max-width:220px;flex:none;min-width:140px;padding:8px 30px 8px 10px;background:#fffdf9;border-color:#ded9cf;border-radius:6px;font-size:11px;color:#4d584b}
.concept-mode .model-canvas-container{height:clamp(460px,62vh,760px);border-color:#e3ddd2;background:#eeeae1}
.concept-mode #model-caption{display:flex;align-items:center;justify-content:center;min-height:42px;padding:12px 18px;color:#8a8274;font-size:10px;letter-spacing:.3px}
.concept-mode .answer-panel{background:#fffefb}
.concept-mode .answer-panel .panel-heading{padding:0 18px;gap:8px;flex-wrap:wrap;align-content:center}
.concept-mode .answer-panel .panel-heading>div{gap:7px}
.concept-mode .answer-panel .question-form,.concept-mode .answer-panel .result{padding:20px 18px}
.concept-mode .answer-panel textarea{min-height:110px;background:#fcfbf7}
.concept-mode .answer-empty{background:#f8f7f1;padding:25px 18px}
.concept-mode .answer-empty h3{font-size:18px}
.concept-mode .answer-empty .eyebrow{font-size:9px}
.concept-mode .answer-panel .connection-label{font-size:9px}
.concept-mode .result-top{flex-wrap:wrap}
.concept-mode .result-scope{text-align:left}
.concept-mode .evidence-item{grid-template-columns:22px minmax(0,1fr)}
.concept-mode .evidence-page{grid-column:2}
@media(min-width:1600px){.concept-mode .workspace{grid-template-columns:minmax(0,1fr) 360px}}
@media(max-width:1100px){.concept-mode main{padding:22px 24px}.concept-mode .workspace{grid-template-columns:minmax(0,1fr) 290px;gap:14px}.concept-mode .concept-intro{padding:20px 20px 12px}.concept-mode .palette-copy{display:none}.concept-mode .model-toolbar{padding:8px 20px}.concept-mode .floor-controls{padding:2px 20px 13px}.concept-mode .concept-cutaway-control span{display:none}}
@media(max-width:850px){.concept-mode .workspace{grid-template-columns:minmax(0,1fr)}.concept-mode .model-canvas-container{height:58vh;min-height:400px;max-height:650px}.concept-mode .answer-panel .panel-heading{justify-content:space-between}.concept-mode .answer-empty{display:none}.concept-mode .answer-panel textarea{min-height:80px}}
@media(max-width:480px){.concept-mode main{padding:16px 10px}.concept-mode .concept-intro{padding:20px 16px 10px}.concept-mode .concept-intro h3{font-size:23px}.concept-mode .view-tabs{padding:8px 10px 12px;gap:2px}.concept-mode .view-tabs button{font-size:10px;padding:9px 8px}.concept-mode .model-canvas-container{height:440px;min-height:0}.concept-mode .model-toolbar{padding:8px 16px}.concept-mode .floor-controls{padding:2px 16px 13px}.concept-mode .document-bar{padding:12px 16px 5px}.concept-mode .concept-palette>span:not(.palette-copy){width:18px;height:18px}}
.concept-disclosure,.concept-proposals{display:none}.concept-mode .concept-disclosure,.concept-mode .concept-proposals{display:block;padding:12px 18px;font-size:11px;line-height:1.6;background:#fff9ec;color:#79551e}.concept-proposals select{max-width:100%;margin:5px 0;padding:7px}.concept-intro p:not(.eyebrow){font-size:11px;max-width:360px;line-height:1.6;color:#79551e}.concept-mode .element-inspector{background:#fffaf0}.concept-mode #scene-badge{max-width:55%}.concept-mode .model-switches{display:flex}

.saved-buildings{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:18px 0;font-size:12px}.saved-buildings select{min-width:220px;max-width:60%;padding:9px;border:1px solid #d2dace;border-radius:5px;background:white}.saved-buildings>span{color:#66776d}.building-progress{padding:15px 20px;background:#f4f7f0;border-bottom:1px solid #dce4d7;font-size:12px;line-height:1.6}.building-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.building-actions strong{margin-right:auto}.building-progress p{margin:8px 0}.job-row{border-top:1px solid #dce4d7;padding:9px 0;margin-top:8px}.job-row summary{cursor:pointer;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.job-status{padding:2px 7px;border-radius:4px;background:#e4ebdc;font-size:10px}.job-row[data-status="failed"] .job-status,.job-row[data-status="needs_attention"] .job-status{background:#fae9ce}.job-stop{margin-left:auto}.job-issue{padding:8px;margin-top:7px;background:#fffaf0;border-left:3px solid #c79b4a}.job-issue button,.unsupported-view button{font-size:11px}.unsupported-view{padding:8px;background:#fff7e7;margin-top:6px}.concept-mode .building-progress{background:#f7f3e9}

#past-jobs{margin-top:10px;color:#66766b}#past-jobs>summary{cursor:pointer;font-size:11px}#past-jobs .job-row{padding:6px 8px;margin-top:4px}.job-row:not([open]){padding-top:5px;padding-bottom:5px}

.native-record-inspector{background:#f6f8f2;padding:14px!important}.native-record-inspector dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:5px 10px;font-size:11px}.native-record-inspector dd,.native-record-inspector summary{overflow-wrap:anywhere}.native-record-inspector details{padding:7px 0;border-top:1px solid #dce4d7;font-size:11px}.native-record-inspector summary{cursor:pointer}.native-record-inspector pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:10px}.native-record-inspector p{line-height:1.5}

/* Source-first controls share the existing local workspace. */
.source-actions,.source-file,.assumption-actions{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 20px}
.source-list{padding:0 8px}.source-file{justify-content:space-between;font-size:12px;border-bottom:1px solid #e3e8e1}.source-file span{color:#58635e}
.cutaway-control{display:flex;gap:8px;align-items:center;font-size:12px;flex-wrap:wrap}.cutaway-control input{width:130px;accent-color:#386c58}.cutaway-control output{min-width:35px}
.conversation{display:grid;gap:12px;padding:18px 20px;max-height:480px;overflow:auto}.conversation:empty{display:none}.chat-message{border:1px solid #dbe3db;border-radius:10px;padding:12px;background:#f7faf5;overflow-wrap:anywhere}.chat-user{margin-left:24px;background:#edf3e9}.chat-assistant{margin-right:12px}.chat-message p{margin:7px 0;white-space:pre-wrap;line-height:1.5;font-size:13px}.chat-citation{display:inline-block;font-size:11px;margin:4px 5px 0 0;border:1px solid #cdd8c9;border-radius:6px;padding:6px;background:white;color:#234b3c;text-align:left;cursor:pointer}
.evidence-checks{margin-top:16px}.evidence-checks>summary{font-weight:600;cursor:pointer;padding:8px 0}.evidence-checks>p{font-size:13px;line-height:1.5}.result-status.clarification{background:#e6effa;color:#305b82}
.assumptions-panel{margin:12px 20px;border-top:1px solid #dce3d8;padding:16px 0}.assumptions-panel>summary{font-weight:600;cursor:pointer}.assumptions-panel>p{font-size:12px;color:#576254;line-height:1.5}.assumption-row{display:grid;grid-template-columns:minmax(110px,1fr) minmax(90px,1fr) 70px;gap:8px;padding:10px 0;border-bottom:1px solid #e6ebe3;align-items:center}.assumption-row label{font-size:12px;font-weight:600}.assumption-row small{grid-column:1/-1;color:#596253;line-height:1.4;order:5}.assumption-row .text-button{grid-column:1/-1;text-align:left;font-size:11px;justify-self:start}.assumption-row input{min-width:0;width:100%;padding:7px;border:1px solid #bbcbb8;border-radius:5px;font-size:12px}.assumption-row span{font-size:12px;grid-column:2/-1;overflow-wrap:anywhere}.assumption-actions{padding:12px 0}.assumption-actions span{font-size:11px;color:#566552}
#conversation-error,#assumption-error{padding:8px 16px}.concept-mode .cutaway-control{color:#4d584b}

.structured-input{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;grid-column:1/-1}.structured-input label{display:grid;gap:4px}.structured-input small{grid-column:1/-1}.structured-input select{min-width:0;padding:7px;grid-column:1/-1}.assumption-support-label{display:block;margin-top:12px;font-size:12px}#assumption-support{max-width:100%;width:100%;padding:8px;min-height:48px}

/* Exact Chronicle theme tokens, src/web/styles/global.css,
   Programmercloud-cmd/AI_Chronicle_UI blob 4396f7a3594369ea3a38c6c0ebdb620496f9703c. */
:root{color-scheme:light;color:#241f1a;background:#fbfaf8;--background:#fbfaf8;--surface:#ffffff;--text:#241f1a;--muted:#716a62;--line:#ded9d2;--accent:#b95318;--focus:#1769aa;--ink:var(--text);--paper:var(--surface);--green:var(--accent)}
:root[data-theme="dark"]{color-scheme:dark;color:#eeeae4;background:#121110;--background:#121110;--surface:#191816;--text:#eeeae4;--muted:#aaa39a;--line:#403c37;--accent:#ef8a4c;--focus:#75bfff}
html,body{min-width:320px;background:var(--background);color:var(--text)}
body{height:100dvh;overflow:hidden}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,[tabindex]:focus-visible{outline-color:var(--focus)}
.skip-link{position:fixed;z-index:100;top:8px;left:8px;padding:10px;background:var(--text);color:var(--surface);transform:translateY(-160%)}
.skip-link:focus{transform:none}
main.chat-shell{max-width:none;padding:0;margin:0;height:100dvh;display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr)}
.chat-column{min-width:0;min-height:0;display:flex;flex-direction:column;height:100%;max-width:850px;width:100%;margin:0 auto}
.chat-header{padding:24px 32px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex:none}
.chat-brand{font-size:17px;font-weight:650;letter-spacing:-.5px;text-decoration:none;display:flex;align-items:center;gap:10px}
.chat-brand span{font-size:24px;color:var(--accent);font-weight:400}
#chat-connection{font-size:11px;color:var(--muted)}
.chat-scroll{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:24px 38px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.chat-welcome{padding:12vh 0 48px}
.chat-kicker{font-size:11px;color:var(--accent);letter-spacing:.08em;text-transform:uppercase;margin-bottom:20px}
.chat-welcome h1{font-size:clamp(29px,3vw,42px);font-weight:500;letter-spacing:-1.5px;margin:0 0 18px;line-height:1.2;color:var(--text)}
.chat-welcome>p:last-of-type{font-size:15px;line-height:1.7;color:var(--muted)}
.chat-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:15px}
.chat-actions button,.chat-citation,.chat-inline-button{border:1px solid var(--line);border-radius:7px;background:var(--surface);color:var(--text);padding:8px 11px;font-size:12px;line-height:1.4;text-align:left;max-width:100%;overflow-wrap:anywhere}
.chat-actions button:hover,.chat-citation:hover,.chat-inline-button:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 7%,var(--surface))}
.chat-actions button:disabled{opacity:.5}
.chat-composer{padding:12px 32px 20px;flex:none}
#composer-slot{border:1px solid var(--line);border-radius:14px;background:var(--surface);box-shadow:0 3px 20px color-mix(in srgb,var(--text) 3%,transparent)}
#composer-slot .question-form{padding:0}
#composer-slot label,#composer-slot .question-meta,#composer-slot .suggestions,#composer-slot #provider-mode{display:none}
#composer-slot textarea{display:block;border:0;border-radius:14px;background:transparent;color:var(--text);resize:none;min-height:70px;max-height:180px;padding:17px 18px 10px;font-size:14px;line-height:1.5;box-shadow:none}
#composer-slot textarea::placeholder{color:var(--muted)}
.composer-controls{display:flex;justify-content:space-between;align-items:center;padding:5px 12px 11px;gap:10px}
#attach-drawings{border:0;background:transparent;color:var(--muted);font-size:13px;padding:7px 5px;display:flex;align-items:center;gap:7px}
#attach-drawings span{font-size:22px;line-height:15px}
#composer-slot #ask-button{width:auto;min-width:38px;height:36px;padding:6px 12px;border:0;background:var(--text);color:var(--surface);border-radius:8px;gap:10px;font-size:12px}
#composer-slot #ask-button span:last-child{color:var(--surface)}
.chat-footnote{font-size:10px;line-height:1.5;color:var(--muted);text-align:center;padding-top:11px}
#attachment-summary{font-size:11px;color:var(--muted);padding:0 3px 9px;overflow-wrap:anywhere}
.chat-log{display:flex;flex-direction:column;gap:24px;padding-bottom:10px}
.chat-turn{font-size:14px;line-height:1.65;overflow-wrap:anywhere;min-width:0}
.chat-turn .chat-role{font-size:10px;letter-spacing:.05em;text-transform:uppercase;color:var(--muted);margin:0 0 6px;font-weight:650}
.chat-turn p{margin:6px 0;white-space:pre-wrap}
.chat-turn.chat-user{align-self:flex-end;max-width:90%;background:color-mix(in srgb,var(--line) 35%,var(--background));padding:12px 16px;border:0;border-radius:12px 12px 3px 12px;margin:0;color:var(--text)}
.chat-turn.chat-user .chat-role{display:none}
.chat-turn.chat-assistant{padding:0;background:transparent;border:0;max-width:100%;margin:0;color:var(--text)}
.chat-turn.chat-operational{padding-left:13px;border-left:2px solid var(--accent)}
.chat-turn .chat-status{font-size:11px;color:var(--muted)}
.chat-turn .chat-status[data-status="failed"],.chat-turn .chat-status[data-status="needs_attention"]{color:var(--accent)}
.chat-turn details{border:1px solid var(--line);border-radius:8px;padding:9px 12px;margin-top:10px;font-size:12px;color:var(--muted)}
.chat-turn summary{cursor:pointer;color:var(--text);font-size:12px;font-weight:500}
.chat-turn details p{margin:8px 0}
.chat-turn .chat-citation{display:inline-flex;margin:6px 6px 0 0;font-size:11px;color:var(--accent);background:var(--surface)}
.chat-turn dl{display:grid;grid-template-columns:minmax(95px,1fr) minmax(0,2fr);gap:6px 10px;margin:10px 0}.chat-turn dd{margin:0}
.chat-turn pre{white-space:pre-wrap;overflow-wrap:anywhere;font-size:10px}
.chat-job-details{max-height:350px;overflow:auto}
.chat-assumption-row,.chat-inventory-row{border-bottom:1px solid var(--line);padding:10px 0}
.chat-assumption-row:last-child,.chat-inventory-row:last-child{border-bottom:0}
.chat-assumption-row strong,.chat-inventory-row strong{font-size:12px}
.chat-shell.workspace-open{grid-template-columns:minmax(340px,380px) minmax(0,1fr)}
.workspace-open .chat-column{border-right:1px solid var(--line);max-width:none}
.workspace-open .chat-header{padding:20px}.workspace-open .chat-scroll{padding:20px}.workspace-open .chat-composer{padding:12px 16px 17px}
.workspace-open .chat-header #chat-connection{max-width:145px;text-align:right}
.visual-workspace{min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--surface)}
.workspace-caption{padding:20px 24px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:15px;font-size:12px;flex:none;min-height:65px}
#workspace-title{font-weight:550}#workspace-status{font-size:10px;color:var(--muted);text-align:right;max-width:50%}
#workspace-content{flex:1;min-height:0;position:relative;overflow:hidden}
#workspace-content #model-pane,#workspace-content #drawing-pane{height:100%;min-height:0;display:flex;flex-direction:column;background:var(--background)}
#workspace-content #model-canvas-container{height:auto!important;min-height:0!important;flex:1;position:relative;background:var(--background);border:0;border-radius:0;margin:0}
#workspace-content #viewer{flex:1;min-height:0;height:auto;max-height:none;border:0;border-radius:0;background:var(--background);margin:0;padding:25px}
#workspace-content #image-stage{max-width:none;position:relative;margin:0 auto;min-width:0}
#workspace-content #page-image{display:block;width:100%;height:auto;box-shadow:0 4px 20px color-mix(in srgb,var(--text) 8%,transparent)}
#workspace-content .viewer-caption{background:var(--surface);color:var(--muted);font-size:10px;padding:10px 20px;margin:0;border-top:1px solid var(--line);flex:none}
#workspace-content .evidence-overlay{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 17%,transparent)}
#workspace-content .evidence-overlay span{background:var(--accent);color:var(--surface)}
#workspace-content #no-model-geometry{margin:auto;padding:30px;color:var(--muted);font-size:14px;line-height:1.7}
#workspace-content .model-toolbar,#workspace-content .floor-controls,#workspace-content .model-switches,#workspace-content .viewer-toolbar,#workspace-content .concept-intro,#workspace-content .concept-disclosure,#workspace-content .concept-proposals,#workspace-content .element-picker,#workspace-content #element-inspector,#workspace-content #floor-source-links,#workspace-content #floor-details,#workspace-content #scene-summary,#workspace-content #scene-warnings,#workspace-content #highlight-note,#workspace-content #revision-notice,#workspace-content #layout-note,#workspace-content #cutaway-note,#workspace-content #unresolved-model-notice,#workspace-content #comparison-controls,#workspace-content #comparison-selection{display:none!important}
.model-annotation,.model-floor-badge{background:var(--surface)!important;color:var(--text)!important;border-color:var(--line)!important}
.chat-turn .native-record-inspector{border:0;padding:0;background:transparent;color:var(--text)}
.chat-turn .native-record-inspector h4{font-size:13px}.chat-turn .native-record-inspector p{color:var(--muted)}
.dragging-files #composer-slot{outline:2px dashed var(--accent);outline-offset:5px}
@media(max-width:900px){.chat-shell.workspace-open{grid-template-columns:minmax(300px,340px) minmax(0,1fr)}}
@media(max-width:700px){body{height:auto;min-height:100dvh;overflow:auto}main.chat-shell{height:100dvh}.chat-shell.workspace-open{height:auto;min-height:100dvh;display:flex;flex-direction:column}.workspace-open .chat-column{height:60dvh;min-height:380px;border-right:0;order:1}.workspace-open .visual-workspace{height:55dvh;min-height:330px;order:0;border-bottom:1px solid var(--line)}.chat-header{padding:18px 20px}.chat-scroll{padding:18px 22px}.chat-welcome{padding-top:9vh}.chat-composer{padding:10px 18px 16px}.workspace-caption{padding:13px 17px;min-height:48px}.chat-footnote{font-size:9px}.workspace-open .chat-header{padding:12px 18px}#workspace-content #viewer{padding:12px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition-duration:.01ms!important}}

/* Theme switches are immediate, keeping button text/background contrast together. */
.chat-shell button{transition:border-color .15s,transform .15s}