:root{color-scheme:dark;--bg:#151a1d;--panel:#202629;--line:#354045;--text:#edf2f2;--muted:#a7b3b8;--mint:#83e6bb;--font:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:14px}button,input,select{font:inherit}button{cursor:pointer;color:inherit;border:0}button:focus-visible,select:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--mint);outline-offset:3px}button:disabled{opacity:.4;cursor:wait}header{height:68px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 26px;gap:16px;background:#1b2124}.identity{display:flex;align-items:center;gap:11px;letter-spacing:1.6px;font-size:15px;white-space:nowrap}.identity svg{width:30px;height:30px;fill:none;stroke:var(--mint);stroke-width:1.4}.identity strong{font-weight:400;color:var(--muted)}.header-divider{width:1px;height:18px;background:var(--line);margin:0 7px}.subtitle{letter-spacing:1px;color:#c9d3d6;font-size:14px}.header-actions{display:flex;align-items:center;gap:12px}.room-spec{color:var(--muted);font-size:13px;margin-right:10px}.room-spec b{color:var(--text);font-weight:500;margin-left:8px}.quiet{background:#2c3438;border:1px solid #424c51;border-radius:6px;padding:9px 13px}.quiet:hover{background:#3b454a}.quiet:active{transform:translateY(1px)}main{height:calc(100dvh - 68px);display:grid;grid-template-columns:minmax(0,1fr) 336px}.viewport{position:relative;overflow:hidden;background:radial-gradient(at 45% 38%,#4b5559,#252d32);min-height:440px;isolation:isolate}#canvas-mount{position:absolute;inset:0}canvas{display:block;width:100%;height:100%;touch-action:none}.view-caption{position:absolute;top:27px;left:28px;pointer-events:none}.eyebrow{font-size:11px;font-weight:600;letter-spacing:2.3px;color:var(--mint)}h1{font-size:24px;letter-spacing:.03em;font-weight:500;margin:9px 0 7px}#camera-label{font-size:13px;color:#c3cdd1;margin:0}.scene-tools{position:absolute;right:22px;top:28px;display:flex;gap:5px}.tool{padding:7px 10px;border-radius:5px;background:#20282dcc;border:1px solid #4d595f;color:#abb8be}.tool.active{background:#303e43;color:#eaf3f2;border-color:#6e838b}.tool:hover{border-color:var(--mint)}.camera-dock{position:absolute;bottom:62px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:4px;padding:6px;background:#1d252aec;backdrop-filter:blur(15px);border:1px solid #50616a70;border-radius:10px;white-space:nowrap;box-shadow:0 8px 30px #1119}.camera-dock button{background:transparent;padding:10px 13px;border-radius:6px;color:#b9c6cb}.camera-dock button:hover{background:#354248;color:#fff}.camera-dock button.active{background:var(--mint);color:#113d2e}.camera-dock span{height:20px;width:1px;background:#53636a;margin:0 3px}.viewport-footer{position:absolute;bottom:22px;left:28px;right:28px;display:flex;justify-content:space-between;gap:18px;font-size:12px;color:#c0cbd1;pointer-events:none}.measurement{position:absolute;left:0;top:0;transform:translate(-50%,-50%);padding:4px 8px;border:1px solid #5d747b;background:#27383edd;color:#e3f2f3;border-radius:4px;font-size:12px;letter-spacing:.4px;pointer-events:none}.toast{position:absolute;bottom:125px;left:50%;transform:translateX(-50%);background:#112f26ef;color:#c9ffe8;padding:12px 18px;border:1px solid #70b99a;border-radius:7px;max-width:85%;text-align:center;opacity:0;transition:opacity .15s;pointer-events:none}.toast.show{opacity:1}#loading{position:absolute;inset:0;background:#252d32;display:grid;place-content:center;text-align:center;z-index:10}#loading[hidden]{display:none}.spinner{border:2px solid #536369;border-top-color:var(--mint);border-radius:50%;width:30px;height:30px;margin:auto;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}aside{background:var(--panel);padding:24px 22px;overflow-y:auto;border-left:1px solid var(--line);scrollbar-width:thin;scrollbar-color:#526168 transparent}.panel-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:17px}.panel-title h2{font-size:16px;margin:0;font-weight:550}.panel-title>span{font-size:12px;color:var(--muted)}.wall-tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:5px;margin-bottom:14px}.wall-tabs button{display:flex;gap:7px;align-items:center;justify-content:center;background:#30393d;border:1px solid #465258;border-radius:6px;padding:10px 0}.wall-tabs button>span{font-size:11px;color:#a5b6bd}.wall-tabs .active{border-color:var(--mint);background:#254138;color:#b4f5d6}.wall-tabs .active>span{color:var(--mint)}.drop-zone{height:165px;position:relative;cursor:pointer;background:#141c1e;border:1px dashed #627780;border-radius:7px;overflow:hidden}.drop-zone img{width:100%;height:100%;object-fit:contain;opacity:.55}.upload-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:7px;background:linear-gradient(transparent,#101719ce)}.upload-overlay b{font-size:14px;font-weight:500}.upload-overlay>span:last-child{font-size:12px;color:#c4d1d5}.upload-symbol{font-size:23px;font-weight:200}.drop-zone:hover,.drop-zone.dragover{border-color:var(--mint);background:#29443a}.drop-zone:hover img{opacity:.38}.asset-line{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:10px 0}.asset-line>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px;color:#c2d0d5}.asset-line button{background:none;color:#b1bfc5;font-size:12px;padding:3px}.small-note{font-size:12px;line-height:1.7;color:var(--muted);margin:9px 0 15px}.control-row{display:flex;justify-content:space-between;align-items:center;gap:10px;margin:14px 0}.control-row label{color:#d3dddf;white-space:nowrap}.control-row select{border:1px solid #4b585d;background:#2d373c;color:#e1e8eb;border-radius:5px;max-width:164px;padding:7px 8px;font-size:13px}.control-row input[type=color]{border:1px solid #607178;border-radius:4px;width:52px;height:30px;background:transparent;padding:3px;cursor:pointer}.fit-note{margin-top:-7px}.range-label{display:flex;align-items:center;justify-content:space-between;margin:18px 0 8px}.range-label output{color:#b4c5cc;font-size:12px;font-variant-numeric:tabular-nums}input[type=range]{width:100%;height:4px;margin:6px 0 9px;accent-color:var(--mint);cursor:pointer}.offsets{display:flex;gap:16px;margin-top:13px}.offsets label{flex:1;color:var(--muted);font-size:12px}.text-button{background:transparent;color:#b2dfcc;margin-top:5px;padding:5px 0;font-size:12px}.divider{height:1px;background:var(--line);margin:24px 0}.bottom-actions{display:flex;gap:8px;margin-top:22px}.bottom-actions .quiet{flex:1;font-size:12px;padding:9px 5px}.privacy-note{font-size:12px;color:#91a0a8;line-height:1.75;margin:16px 0 0}#move-pad{position:absolute;left:24px;bottom:77px;text-align:center}#move-pad button{background:#263b44cc;border:1px solid #6a818a;border-radius:5px;width:34px;height:32px;margin:2px;color:white;touch-action:none}#move-pad[hidden]{display:none}@media(max-width:1100px){.room-spec{display:none}.scene-tools{top:110px;left:27px;right:auto}.camera-dock button{padding:9px 10px}.camera-dock{bottom:65px}.viewport-footer{font-size:11px;left:20px;right:20px}main{grid-template-columns:minmax(0,1fr) 302px}aside{padding:23px 18px}#move-pad{bottom:125px;left:20px}}@media(max-width:760px){header{padding:0 14px;height:60px}.identity{font-size:12px;gap:7px;letter-spacing:1px}.identity svg{width:25px}.subtitle,.header-divider,#fullscreen{display:none}.header-actions{gap:5px}.header-actions button{font-size:12px;padding:8px}main{height:auto;display:flex;flex-direction:column}.viewport{height:64dvh;min-height:440px}.view-caption{left:19px;top:20px}h1{font-size:21px}.scene-tools{left:auto;right:15px;top:19px;display:grid;grid-template-columns:1fr 1fr}.tool{font-size:12px;padding:6px 8px}.camera-dock{bottom:47px;padding:4px;gap:0;max-width:calc(100% - 20px)}.camera-dock button{font-size:12px;padding:10px 9px}.camera-dock span{margin:0 2px}.viewport-footer{bottom:16px;font-size:11px;left:14px;right:14px}.viewport-footer>span:last-child{display:none}#camera-label{font-size:12px;max-width:210px}aside{border-left:0;border-top:1px solid var(--line);overflow:visible;padding:23px 22px}.drop-zone{height:180px}.privacy-note{max-width:560px}#move-pad{bottom:100px;left:15px}.toast{bottom:105px} .control-row select{max-width:55%}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

.preview-modes{position:absolute;top:23px;left:28px;display:flex;gap:4px;padding:4px;border:1px solid #53636a;background:#1d252aee;border-radius:8px;z-index:2}.preview-modes button{padding:8px 15px;border-radius:5px;background:transparent;color:#b9c6cb}.preview-modes button.active{background:var(--mint);color:#113d2e}.preview-modes button:hover:not(.active){background:#354248;color:#fff}.view-caption{top:88px}
#flat-preview{display:grid;place-items:center;min-width:0;min-height:0}#flat-preview[hidden],#space-settings[hidden]{display:none}
.flat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;width:100%;max-width:100%;min-width:0}
.flat-wall{margin:0;padding:0;min-width:0;text-align:left}
.flat-wall canvas{width:100%;height:auto;aspect-ratio:1;touch-action:auto;border:1px solid #526168;box-shadow:0 8px 24px #0002;pointer-events:none}
.flat-wall>span{display:flex;align-items:center;justify-content:space-between;gap:5px;padding-top:12px;color:#d7e0e3;font-size:13px;line-height:20px}
.flat-wall small{color:var(--muted);font-size:11px;white-space:nowrap}
.viewport.is-flat{background:#242d32;display:grid;grid-template-areas:"modes" "caption" "artwork";grid-template-rows:auto auto minmax(0,1fr);gap:20px;padding:24px 28px;min-width:0;min-height:0}
.is-flat .preview-modes{position:static;grid-area:modes;justify-self:start}
.is-flat .view-caption{position:static;grid-area:caption}
.is-flat .view-caption .eyebrow{display:none}
.is-flat h1{margin:0 0 8px;font-size:22px}
.is-flat #camera-label{line-height:1.5;max-width:none}
.is-flat #flat-preview{grid-area:artwork}
.is-flat #canvas-mount{visibility:hidden;pointer-events:none}
.is-flat .scene-tools,.is-flat .camera-dock,.is-flat .measurement,.is-flat #move-pad,.is-flat .viewport-footer{display:none!important}
@media(min-width:761px) and (max-width:1100px){.scene-tools{top:24px;left:auto;right:20px}.tool{padding:7px 8px}.preview-modes{left:20px}.preview-modes button{padding:8px 10px}.view-caption{left:20px}}
@media(max-width:760px){.preview-modes{top:16px;left:19px}.preview-modes button{font-size:12px;padding:8px 13px}.view-caption{top:76px}.scene-tools{top:75px}.viewport.is-flat{padding:18px 16px;gap:18px}.is-flat h1{font-size:20px}.is-flat #flat-preview{align-items:start}.flat-row{gap:8px}.flat-wall>span{font-size:12px;flex-direction:column;align-items:flex-start;padding-top:10px;gap:0}}
#preview-layout.is-flat{grid-template-columns:minmax(0,1fr);min-width:0}#settings-panel[hidden]{display:none}
@media(max-width:760px){#preview-layout.is-flat .viewport{height:calc(100dvh - 60px);min-height:300px}}

.design-picker{display:flex;align-items:center;gap:10px;min-width:0;margin-right:auto}
.design-picker label{font-size:12px;color:var(--muted);white-space:nowrap}
#design-select{width:190px;max-width:100%;min-width:0;padding:9px 12px;border:1px solid #4b585d;border-radius:6px;background:#2d373c;color:var(--text);font-size:13px}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
#retry-designs[hidden]{display:none}
#settings-panel .privacy-note{border-top:1px solid var(--line);padding-top:14px;margin-top:18px}
@media(max-width:760px){header{gap:10px}.identity>div,.design-picker label{display:none}.design-picker{flex:1;gap:5px}#design-select{width:100%;padding:8px 6px;font-size:12px}.identity{flex-shrink:0}.header-actions{flex-shrink:0}#retry-designs{padding:6px;font-size:11px}}

/* Viewer controls sit directly on the canvas. */
#preview-layout{grid-template-columns:minmax(0,1fr)}
.scene-tools{top:24px;right:22px;left:auto}
.fov-control{position:absolute;right:22px;top:50%;transform:translateY(-50%);display:flex;flex-direction:column;align-items:center;gap:5px;padding:12px 8px;border:1px solid #50616a99;border-radius:9px;background:#1d252ae8;backdrop-filter:blur(12px);box-shadow:0 5px 20px #1113}
.fov-control label{font-size:11px;color:#b9c6cb;cursor:pointer}
.fov-control output{font-size:12px;color:#edf2f2;font-variant-numeric:tabular-nums}
#fov{writing-mode:vertical-lr;direction:rtl;width:20px;height:128px;margin:7px 3px 2px;accent-color:var(--mint);touch-action:none}
.is-flat .fov-control{display:none}
@media(max-width:760px){.viewport{height:calc(100dvh - 60px)}.scene-tools{top:17px;right:15px}.fov-control{right:15px;padding:10px 5px}#fov{height:105px}}

#school-controls{display:flex;align-items:center;gap:10px;min-width:0}
#school-controls[hidden],#school-name[hidden]{display:none}
#school-name{font-size:14px;color:var(--text);letter-spacing:.3px}
@media(max-width:760px){#school-controls{width:100%;gap:5px}#school-name{font-size:13px}}