:root{color-scheme:light;--ink:#233d4a;--muted:#566e79;--accent:#176773;--accent-soft:#e7f2f3;--paper:#fff;--canvas:#e8eef1;--line:#d7e1e5;--shadow:0 8px 28px #233d4a0c;--display:Bahnschrift,"Arial Narrow",sans-serif;--body:"Segoe UI",Arial,sans-serif}
*{box-sizing:border-box}html,body{width:100%;height:100%;margin:0;overflow:hidden}body{display:flex;flex-direction:column;background:var(--canvas);color:var(--ink);font-family:var(--body);font-size:14px;-webkit-font-smoothing:antialiased}button,input{font:inherit}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.46}button:focus-visible,input:focus-visible,canvas:focus-visible{outline:3px solid #2b8494;outline-offset:3px}button{touch-action:manipulation}button,dialog{border:0}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}svg.icon-library{position:absolute;width:0;height:0;overflow:hidden}button svg{pointer-events:none}[hidden]{display:none!important}
.app-header{height:78px;flex:0 0 78px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:0 26px;background:var(--paper);border-bottom:1px solid var(--line);z-index:20}.identity{display:flex;align-items:center;gap:12px}.brand-mark{width:38px;height:38px;display:grid;place-items:center;border:1px solid #afc2ca;border-radius:8px;color:var(--accent)}.brand-mark svg{width:27px;height:27px}.brand-line{display:flex;align-items:baseline;gap:8px;white-space:nowrap}.brand-line strong{font-family:var(--display);font-size:19px;letter-spacing:.06em;font-weight:600}.brand-line span{font-size:12px;color:var(--muted)}.identity p{font-size:11px;color:var(--muted);margin:4px 0 0;letter-spacing:.025em}.mode-switch{display:flex;gap:3px;padding:4px;border:1px solid var(--line);border-radius:9px;background:#f4f7f8}.mode-switch button{min-height:44px;display:flex;align-items:center;justify-content:center;gap:8px;padding:8px 17px;background:transparent;border-radius:6px;font-size:13px;font-weight:600;color:var(--muted);transition:background .15s,color .15s,box-shadow .15s}.mode-switch button:hover{background:#e4ecef}.mode-switch button[aria-pressed=true],.mode-switch button.active{background:var(--paper);color:var(--accent);box-shadow:0 1px 4px #233d4a15}.header-actions{display:flex;align-items:center;gap:6px}.prototype-badge{font-size:10px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;border:1px solid var(--line);border-radius:4px;padding:6px 8px;margin-right:7px;color:var(--muted)}.icon-button{width:44px;height:44px;min-height:44px;display:grid;place-items:center;background:transparent;border-radius:6px;transition:background .15s,color .15s}.icon-button:hover{background:var(--accent-soft);color:var(--accent)}.sidebar-toggle{display:none}
.workspace{flex:1;min-height:0;display:grid;grid-template-columns:260px minmax(0,1fr)}.sidebar{background:var(--paper);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;overflow:auto;z-index:15}.floor-heading{padding:26px 22px 24px;display:flex;gap:15px;align-items:center;border-bottom:1px solid var(--line)}.floor-number{font-family:var(--display);font-size:48px;font-weight:300;line-height:1;color:var(--accent)}.eyebrow{font-size:10px;letter-spacing:.1em;text-transform:uppercase;font-weight:600;color:var(--muted)}h1{font-family:var(--display);font-size:23px;font-weight:500;line-height:1.15;margin:5px 0 0;letter-spacing:-.025em}.room-browser{min-height:135px;flex:1;display:flex;flex-direction:column;padding:20px 14px 8px}.section-heading{display:flex;align-items:center;justify-content:space-between;padding:0 8px 12px}h2{font-size:13px;font-weight:600;margin:0}.count{min-width:24px;height:22px;padding:3px 6px;display:grid;place-items:center;background:#edf2f4;font-size:10px;color:var(--muted);border-radius:4px}.search-field{display:flex;align-items:center;border:1px solid var(--line);border-radius:5px;height:42px;margin:0 7px 10px;padding-left:10px;flex-shrink:0;color:var(--muted)}.search-field svg{width:17px;height:17px}.search-field:focus-within{border-color:var(--accent)}input[type=search]{width:100%;min-width:0;height:40px;padding:0 8px;border:0;background:transparent;color:var(--ink);font-size:12px;outline-offset:0}input[type=search]::placeholder{color:#677e87}.room-list{list-style:none;margin:0;padding:0 2px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#c2d1d8 transparent;min-height:35px}.room-list li{padding:0;margin:2px 0}.room-list button{display:flex;width:100%;min-height:44px;align-items:center;text-align:left;gap:8px;padding:9px 11px;background:transparent;border:1px solid transparent;border-radius:5px;font-size:12px;line-height:1.35;transition:background .15s}.room-list button:hover{background:#f0f5f6}.room-list button.active,.room-list button.selected,.room-list button[aria-pressed=true],.room-list button[aria-selected=true]{background:var(--accent-soft);color:var(--accent);border-color:#c4dedf;font-weight:600}.room-list button small,.room-list .room-area{margin-left:auto;white-space:nowrap;color:var(--muted);font-size:10px;font-weight:400}.room-list button .room-id{color:var(--muted);font-family:var(--display);font-size:10px}.room-list .empty-state,.room-list li.empty{font-size:12px;color:var(--muted);padding:12px}.room-detail{border-top:1px solid var(--line);padding:18px 22px;background:#f8fafb}.room-detail h2{font-family:var(--display);font-size:18px;font-weight:500;line-height:1.2;margin:7px 0}.room-detail p{font-size:12px;color:var(--muted);line-height:1.5;margin:7px 0 15px}.primary-button{background:var(--accent);color:white;display:flex;justify-content:center;align-items:center;gap:8px;padding:11px 10px;min-height:44px;width:100%;border-radius:5px;font-size:12px;font-weight:600;transition:background .15s}.primary-button:hover:not(:disabled){background:#115560}.primary-button svg{width:17px;height:17px}.primary-button svg:last-child{margin-left:auto;width:16px}.display-options{border-top:1px solid var(--line);padding:17px 22px 20px}.display-options h2{font-size:11px;margin-bottom:8px}.toggle-row{min-height:44px;display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:12px;cursor:pointer}.toggle-row input[type=checkbox]{appearance:auto;flex:0 0 18px;width:18px;height:18px;min-height:0;max-width:18px;padding:0;margin:0;accent-color:var(--accent);cursor:pointer}.height-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:17px;font-size:11px}.height-heading output{font-family:var(--display);font-size:12px;white-space:nowrap;color:var(--accent)}input[type=range]{display:block;width:100%;height:24px;margin:7px 0 0;padding:0;accent-color:var(--accent);cursor:pointer}.range-captions{display:flex;justify-content:space-between;gap:10px;font-size:9px;color:var(--muted);margin-top:2px}.about-button{display:flex;justify-content:space-between;align-items:center;text-align:left;background:transparent;border-top:1px solid var(--line);padding:10px 22px;min-height:44px;flex-shrink:0;font-size:11px;color:var(--muted)}.about-button:hover{background:var(--accent-soft);color:var(--accent)}.about-button svg{width:15px;height:15px}
.viewport{position:relative;overflow:hidden;min-width:0;min-height:0;background:var(--canvas)}#scene{display:block;width:100%;height:100%;touch-action:none;outline-offset:-4px}#labels{position:absolute;inset:0;overflow:hidden;pointer-events:none}#labels .label,.room-label{position:absolute;white-space:nowrap;transform:translate(-50%,-50%);color:var(--ink);background:#ffffffed;border:1px solid #cbd9de;border-radius:4px;padding:5px 8px;box-shadow:0 2px 8px #233d4a10;font-size:10px;line-height:1.25;font-weight:500;pointer-events:auto;cursor:pointer}#labels .label.selected,.room-label.selected{background:var(--accent);color:white;border-color:var(--accent)}.scene-caption{position:absolute;top:25px;left:28px;display:flex;align-items:center;gap:10px;color:var(--muted);pointer-events:none;font-family:var(--display);font-size:10px;letter-spacing:.11em}.scene-caption-line{display:block;width:22px;height:1px;background:#96aeb9}.caption-separator{padding:0 8px;color:#a4b6bf}.view-tools{position:absolute;top:20px;right:18px;padding:5px;border:1px solid #d3dfe5;border-radius:9px;background:#ffffffed;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:1px}.view-tools .icon-button{width:44px;height:44px;min-height:44px}.view-tools .icon-button svg{width:19px;height:19px}.tool-separator{height:1px;margin:4px 8px;background:var(--line)}.minimap-panel{position:absolute;bottom:67px;left:24px;padding:11px 12px 7px;width:234px;background:#ffffffed;border:1px solid #d3dfe5;border-radius:8px;box-shadow:var(--shadow)}.minimap-heading{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:9px;margin-bottom:5px}.minimap-heading svg{width:13px;height:13px}#minimap{display:block;width:100%;height:auto;cursor:pointer;touch-action:none}.scene-footer{position:absolute;left:24px;right:24px;bottom:21px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:var(--muted);pointer-events:none}.location{display:flex;align-items:center;gap:7px;font-size:11px;color:var(--ink);white-space:nowrap;background:#ffffffdb;border:1px solid #d3dfe5;border-radius:5px;padding:8px 10px;max-width:45%}.location span{overflow:hidden;text-overflow:ellipsis}.location svg{width:15px;height:15px}.scene-footer p{font-size:10px;margin:0;line-height:1.45;text-align:right;max-width:430px}.loading-panel{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--canvas);z-index:5;text-align:center;padding:28px}.loading-panel h2{font-family:var(--display);font-size:24px;font-weight:400;margin:22px 0 10px}.loading-panel p{font-size:13px;color:var(--muted);line-height:1.5}.loading-orbit{width:38px;height:38px;border:1px solid #b8cbd3;border-top-color:var(--accent);border-right-color:var(--accent);border-radius:50%;animation:turn 1.2s linear infinite}.error-panel{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:6;width:min(440px,85%);background:white;border:1px solid #bdcdd5;border-left:3px solid #a6513f;border-radius:8px;padding:24px;line-height:1.6;box-shadow:var(--shadow)}.walk-controls{position:absolute;bottom:74px;right:24px;display:grid;grid-template-columns:44px 44px 44px;grid-template-rows:44px 44px;gap:5px;z-index:6}.walk-controls button{display:grid;place-items:center;background:#fffffff2;border:1px solid #c3d4db;border-radius:6px;box-shadow:0 2px 6px #233d4a0c;touch-action:none;user-select:none}.walk-controls button:hover,.walk-controls button:active{background:var(--accent);color:white}.walk-controls button[data-move=forward]{grid-column:2}.walk-controls button[data-move=left]{grid-row:2;grid-column:1}.walk-controls button[data-move=backward]{grid-row:2;grid-column:2}.walk-controls button[data-move=right]{grid-row:2;grid-column:3}.app-footer{display:flex;align-items:center;gap:8px;padding:0 25px;background:var(--paper);border-top:1px solid var(--line);min-height:34px;flex:0 0 34px;font-size:10px;color:var(--muted);z-index:20}.status-dot{display:inline-block;width:5px;height:5px;background:#4b8c8d;border-radius:50%;flex-shrink:0}.footer-divider{padding:0 4px}.footer-edition{margin-left:auto;font-family:var(--display);font-size:10px;letter-spacing:.04em}
dialog{width:min(540px,calc(100vw - 36px));max-height:calc(100dvh - 56px);border:1px solid var(--line);border-radius:12px;padding:24px 30px 30px;color:var(--ink);background:var(--paper);box-shadow:0 22px 100px #183d4c30}dialog::backdrop{background:#17344055;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin:-7px -12px 2px 0}dialog h2{font-family:var(--display);font-size:28px;font-weight:500;letter-spacing:-.035em;margin:8px 0 22px}dialog p{font-size:13px;line-height:1.65;color:var(--muted)}.help-section{padding:15px 0;border-top:1px solid var(--line)}.help-section:last-child{padding-bottom:0}.help-section h3{font-size:13px;font-weight:600;margin:0 0 8px}.help-section p{margin:8px 0}.model-key{display:flex;align-items:center;gap:7px;font-size:10px;background:var(--accent-soft);padding:12px;border-radius:5px;margin-top:24px}kbd{display:inline-grid;place-items:center;min-width:20px;height:21px;padding:1px 4px;margin:0 1px;border:1px solid #d2dce0;border-bottom-width:2px;border-radius:3px;background:#f3f6f7;font-size:10px;font-family:var(--body);color:var(--ink)}@keyframes turn{to{transform:rotate(360deg)}}
@media(min-height:880px){.room-browser{padding-top:23px}.room-list button{min-height:44px}.toggle-row{min-height:44px}.display-options{padding-top:21px;padding-bottom:24px}.room-detail{padding-top:22px;padding-bottom:22px}}
@media(max-width:1100px){.app-header{padding:0 18px;gap:10px}.brand-line span{display:none}.brand-mark{width:34px;height:34px}.header-actions{gap:0}.prototype-badge{font-size:9px;padding:5px 6px;margin-right:3px}.mode-switch button{padding:8px 13px}.scene-footer p{max-width:260px}.minimap-panel{width:195px}.scene-caption{left:24px}.workspace{grid-template-columns:248px minmax(0,1fr)}}
@media(max-width:760px){.app-header{height:124px;flex-basis:124px;flex-wrap:wrap;position:relative;padding:9px 14px 67px;align-content:center;gap:6px}.identity{gap:8px}.brand-mark{display:none}.brand-line strong{font-size:17px}.brand-line span{display:inline;font-size:10px}.identity p{font-size:10px;margin-top:2px}.sidebar-toggle{display:grid;width:44px;height:44px;min-height:44px;margin-left:-5px}.header-actions .icon-button{width:44px;height:44px;min-height:44px}.prototype-badge{display:none}.mode-switch{position:absolute;bottom:9px;left:14px;right:14px;justify-content:stretch;height:52px;padding:3px}.mode-switch button{flex:1;min-height:44px;padding:5px 8px;font-size:12px;gap:7px}.mode-switch svg{width:17px;height:17px}.workspace{display:block;position:relative}.viewport{width:100%;height:100%}.sidebar{position:absolute;top:0;bottom:0;left:0;width:min(290px,calc(100vw - 65px));transform:translateX(-101%);transition:transform .2s ease;box-shadow:15px 0 40px #233d4a15;z-index:16}.sidebar.open,.sidebar.is-open,body.sidebar-open .sidebar,#sidebar[data-open=true]{transform:translateX(0)}.floor-heading{padding:18px 22px}.floor-number{font-size:39px}.room-browser{min-height:110px}.room-detail{padding:13px 22px}.room-detail h2{font-size:17px}.room-detail p{margin:5px 0 12px}.display-options{padding-top:13px;padding-bottom:14px}.toggle-row{min-height:44px}.height-heading{margin-top:9px}.scene-caption{top:18px;left:16px;font-size:8px;letter-spacing:.08em}.scene-caption-line{width:13px}.caption-separator{padding:0 4px}.view-tools{right:12px;top:45px;padding:3px;gap:0}.view-tools .icon-button{width:44px;height:44px;min-height:44px}.view-tools .icon-button svg{width:17px;height:17px}.tool-separator{margin:3px 7px}.minimap-panel{left:13px;bottom:76px;width:156px;padding:8px 9px 5px}.minimap-heading{font-size:8px;gap:4px}.minimap-heading svg{width:11px;height:11px}.scene-footer{left:13px;right:13px;bottom:14px;display:flex;flex-wrap:wrap;gap:7px}.location{font-size:10px;padding:6px 9px;max-width:100%}.scene-footer p{font-size:9px;max-width:100%;width:100%;text-align:left;margin-left:1px}.walk-controls{right:13px;bottom:77px;grid-template-columns:44px 44px 44px;grid-template-rows:44px 44px;gap:4px}.app-footer{padding:0 14px;font-size:9px;min-height:31px;flex-basis:31px;gap:6px}.footer-edition{display:none}.footer-divider{padding:0 2px}dialog{padding:20px 24px 24px}dialog h2{font-size:25px}.model-key{font-size:9px}}
@media(max-width:380px){.brand-line span{display:none}.header-actions .icon-button{width:44px}.scene-caption{font-size:7px}.minimap-panel{width:133px}.minimap-heading{font-size:7px}.walk-controls{grid-template-columns:44px 44px 44px;grid-template-rows:44px 44px}.app-footer{font-size:8px}.scene-footer p{font-size:8px}}
@media(max-height:650px) and (min-width:761px){.app-header{height:64px;flex-basis:64px}.floor-heading{padding-top:16px;padding-bottom:16px}.floor-number{font-size:38px}.room-browser{padding-top:13px}.room-detail{padding-top:12px;padding-bottom:12px}.room-detail p{margin:5px 0 9px}.display-options{padding-top:11px;padding-bottom:11px}.height-heading{margin-top:8px}.toggle-row{min-height:44px}.minimap-panel{width:170px;bottom:60px}.view-tools .icon-button{height:44px;min-height:44px}.tool-separator{margin-top:2px;margin-bottom:2px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}


/* Keep help text and navigation separate on small or landscape viewports. */
.scene-footer{min-width:0}.scene-footer p{min-width:0;overflow-wrap:break-word}.location{min-width:0}.location span{min-width:0}
@media(max-width:760px){body[data-mode=walk] .view-tools{display:none}.scene-footer p{max-height:2.9em;overflow:hidden}.walk-controls{bottom:80px}.minimap-panel{bottom:80px}}
@media(max-height:700px) and (max-width:760px), (max-height:650px) and (min-width:761px){.view-tools{display:grid;grid-template-columns:44px 44px;gap:3px;padding:4px}.view-tools .tool-separator{display:none}.view-tools #fit-view{grid-column:1 / -1;width:100%}.view-tools .icon-button{width:44px;height:44px;min-height:44px}body[data-mode=walk] .view-tools{display:none}}
@media(max-height:470px) and (min-width:761px){.scene-footer{bottom:12px;gap:12px}.scene-footer p{max-width:55%;font-size:9px}.minimap-panel{width:145px;bottom:58px}.walk-controls{bottom:58px}.scene-caption{top:13px}}

/* The mobile drawer scrolls as one panel; search results keep usable height. */
@media(max-width:760px){.sidebar{overflow-y:auto;overscroll-behavior:contain}.sidebar .floor-heading,.sidebar .room-browser,.sidebar .room-detail,.sidebar .display-options{flex-shrink:0}.sidebar .room-browser{flex:0 0 auto;min-height:0}.sidebar .room-list{flex:0 0 auto;min-height:88px;max-height:220px;overflow-y:auto;overscroll-behavior:contain}}

/* The vector plan and the 3D canvas share one camera interaction surface. */
#scene{position:relative;z-index:0}
#plan-layer{position:absolute;inset:0;z-index:1;overflow:hidden;pointer-events:none;background:#fff;opacity:var(--plan-opacity,1)}
#plan-stage{position:absolute;inset:0;transform-origin:0 0;pointer-events:none}
#plan-stage>svg{display:block;width:100%;height:100%;max-width:none;fill:initial;stroke:initial;stroke-width:initial;stroke-linecap:initial;stroke-linejoin:initial;overflow:visible;pointer-events:none}
#plan-stage .plan-stroke{stroke:#30363b}#plan-stage .plan-fill{fill:#252b30}
#plan-stage[data-view-mode=highlight] .excluded-detail,#plan-stage[data-view-mode=highlight] .highlight-hidden{display:none}
#plan-stage[data-view-mode=highlight] .highlight-only{display:inline}
#plan-stage[data-view-mode=highlight][data-show-labels=false] .space-label{display:none}
#labels{z-index:2}.scene-caption{z-index:3}.view-tools,.minimap-panel,.scene-footer{z-index:4}.loading-panel{z-index:8}.error-panel{z-index:9}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.mode-switch button{white-space:nowrap;min-width:0}
@media(min-width:761px) and (max-width:1050px){.mode-switch button{padding-inline:10px;gap:6px}.prototype-badge{display:none}}
@media(max-width:760px){.mode-switch{gap:2px}.mode-switch button{padding:5px 4px;gap:5px;font-size:11px}.mode-switch button svg{width:15px;height:15px}}
@media(max-width:340px){.mode-switch button{font-size:10px;gap:4px}.mode-switch button svg{width:14px;height:14px}}

/* A sliding choice keeps camera gestures on the left mouse button. */
.drag-switch{position:absolute;z-index:4;bottom:68px;left:50%;transform:translateX(-50%);display:grid;grid-template-columns:1fr 1fr;width:244px;height:52px;padding:3px;border:1px solid var(--line);border-radius:9px;background:#f4f7f8f5;box-shadow:var(--shadow)}
.drag-switch::before{content:"";position:absolute;top:3px;bottom:3px;left:3px;width:calc((100% - 6px)/2);border-radius:6px;background:var(--paper);box-shadow:0 1px 4px #233d4a15;transition:transform .18s ease;pointer-events:none}
.drag-switch[data-action=rotate]::before{transform:translateX(100%)}
.drag-switch button{position:relative;z-index:1;display:flex;align-items:center;justify-content:center;gap:7px;min-height:44px;padding:6px 10px;border-radius:6px;background:transparent;color:var(--muted);font-size:12px;font-weight:600;white-space:nowrap}
.drag-switch button[aria-pressed=true]{color:var(--accent)}
.drag-switch button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}
.drag-switch svg{width:17px;height:17px}
body:not([data-mode=walk]) #scene{cursor:grab}body:not([data-mode=walk]) #scene:active{cursor:grabbing}
@media(max-width:1100px){body:not([data-mode=walk]) .minimap-panel{bottom:132px}}
@media(max-width:760px){.drag-switch{width:min(236px,calc(100% - 26px))}.drag-switch button{gap:5px;padding-inline:6px}}
@media(prefers-reduced-motion:reduce){.drag-switch::before{transition:none}}