:root{--bg-gradient: linear-gradient(170deg, #d9e4d5 0%, #e2e9de 30%, #e9edf3 70%);--ink: #132031;--ink-soft: #37485d;--muted: #42536a;--muted-2: #64748b;--line: #cad5e3;--line-soft: #e2e8f0;--card: #edf2f8;--field-bg: #e8eef6;--field-border: #afbccb;--green: #4A7C59;--green-dark: #2d5a3a;--green-hover: #3f6c4d;--green-tint: rgba(74, 124, 89, .1);--amber: #d46b08;--amber-dark: #a85506;--amber-tint: rgba(212, 107, 8, .1);--blue: #2563eb;--emerald: #059669;--amber: #b45309;--red: #b91c1c;--mono: "JetBrains Mono", "Fira Code", ui-monospace, "SF Mono", Menlo, monospace;--radius: 12px;--radius-sm: 8px;--shadow: 0 1px 4px rgba(19, 32, 49, .1)}body{margin:0;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:var(--bg-gradient);background-attachment:fixed;color:var(--ink);min-height:100vh}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#9fb0c4;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#7d93ad}.container{max-width:2400px;margin:0 auto;padding:16px clamp(14px,1.8vw,28px) 24px}header{margin-bottom:14px;padding-bottom:0;border-bottom:none}.header-row{display:flex;align-items:center;gap:12px;margin-bottom:4px}.app-logo{width:38px;height:38px;flex:0 0 auto;border-radius:9px;background:linear-gradient(135deg,var(--green),var(--green-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;box-shadow:var(--shadow)}h1{font-size:1.5rem;font-weight:700;color:var(--ink);letter-spacing:-.02em;margin:0}.description{color:var(--muted);max-width:900px;line-height:1.5;font-size:.88rem;margin:0 0 0 50px}@media(max-width:700px){.description{margin-left:0}}.module-switch{display:flex;gap:8px;margin-bottom:12px;padding:5px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.module-switch-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:12px 14px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--muted);font-family:var(--mono);font-size:.92rem;font-weight:700;letter-spacing:.01em;cursor:pointer;transition:background .15s,color .15s,box-shadow .15s}.module-switch-btn:hover{background:var(--line-soft);color:var(--ink)}.module-switch-btn.active.module-shear{background:var(--green);color:#fff;box-shadow:var(--shadow)}.module-switch-btn.active.module-vertical{background:var(--amber);color:#fff;box-shadow:var(--shadow)}.module-switch-badge{display:inline-block;padding:1px 8px;background:#ffffff47;border-radius:10px;font-size:.78rem}.module-switch-btn:not(.active) .module-switch-badge{background:var(--amber-tint);color:var(--amber-dark)}@media(max-width:500px){.module-switch-btn{font-size:.8rem;padding:10px 8px}}.top-bar{display:flex;align-items:center;gap:8px;padding:10px 12px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:12px;flex-wrap:wrap}.top-bar-group{display:flex;gap:6px;align-items:center}.top-bar-group+.top-bar-group{border-left:1px solid var(--line);padding-left:10px;margin-left:2px}.top-bar .spacer{flex:1}.top-bar .btn{padding:7px 12px;font-size:.82rem;white-space:nowrap}.workspace{display:flex;align-items:stretch;min-height:calc(100vh - 190px)}.workspace.resizing{-webkit-user-select:none;user-select:none;cursor:col-resize}.canvas-pane.canvas-height-resizing{-webkit-user-select:none;user-select:none;cursor:row-resize}.canvas-pane{order:1;flex:1 1 auto;background:var(--card);padding:14px;border-radius:var(--radius) 0 0 var(--radius);border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column;overflow:hidden;min-width:320px}.canvas-pane.fullscreen,.canvas-pane:fullscreen{position:relative;top:0;width:100%;height:100%;padding:20px;border-radius:0;box-shadow:none}.panel-resizer{order:2;flex:0 0 6px;cursor:col-resize;background:transparent;position:relative;z-index:2}.panel-resizer:after{content:"";position:absolute;left:2px;top:25%;bottom:25%;width:2px;background:var(--line);border-radius:1px;transition:background .15s}.panel-resizer:hover:after,.workspace.resizing .panel-resizer:after{background:var(--green)}.side-panel{order:3;flex:0 0 auto;background:var(--card);border-radius:0 var(--radius) var(--radius) 0;border:1px solid var(--line);box-shadow:var(--shadow);display:flex;flex-direction:column;min-width:300px;overflow:hidden}.tabs{display:flex;border-bottom:1px solid var(--line);background:#e6edf6;flex-shrink:0}.tab-button{flex:1;padding:12px 8px;background:transparent;border:none;border-bottom:3px solid transparent;cursor:pointer;font-size:.82rem;font-weight:600;font-family:var(--mono);letter-spacing:.02em;color:var(--muted-2);transition:all .15s;white-space:nowrap;position:relative}.tab-button:hover{background:#eef3f9;color:var(--ink)}.tab-button.active{color:var(--green);border-bottom-color:var(--green);background:var(--card)}.tab-badge{display:inline-block;margin-left:6px;padding:1px 7px;background:var(--green);color:#fff;border-radius:10px;font-size:.72rem;font-weight:700;vertical-align:middle}.tab-content{flex:1;overflow-y:auto;padding:14px;min-height:0}.tab-content h3:first-child{margin-top:0}.tab-content h3{font-size:.95rem;color:var(--ink);letter-spacing:-.01em}.input-group{margin-bottom:15px}.input-group label{display:block;font-size:.85rem;font-weight:600;color:var(--ink-soft);margin-bottom:5px}.input-group input,.input-group select{width:100%;padding:8px;border:1.5px solid var(--field-border);border-radius:6px;font-size:1rem;background:var(--field-bg);color:var(--ink)}.input-group .calculated-value{background-color:#dfe6ef;color:#5b6b7e;cursor:not-allowed}input:focus,select:focus,textarea:focus{border-color:var(--green)!important;box-shadow:0 0 0 2px var(--green-tint);outline:none}.btn{padding:8px 14px;border:1.5px solid var(--field-border);border-radius:var(--radius-sm);background:#eef3f9;color:#1f3349;cursor:pointer;font-weight:600;font-size:.85rem;font-family:var(--mono);transition:all .15s}.btn:hover{border-color:#7d93ad;background:#e3ebf4}.btn:disabled{cursor:not-allowed}.btn-primary{background-color:var(--green);border-color:var(--green);color:#fff;width:100%}.btn-primary:hover{background-color:var(--green-hover);border-color:var(--green-hover)}.btn-secondary{background-color:#eaf5ef;border-color:var(--emerald);color:var(--emerald)}.btn-secondary:hover{background-color:#ddeee5;border-color:#047857}.btn-warning{background-color:#fdf3e7;border-color:var(--amber);color:var(--amber)}.btn-warning:hover{background-color:#f8e8d3}.btn-danger{background-color:#fbeaea;border-color:var(--red);color:var(--red);margin-top:10px}.btn-danger:hover{background-color:#f6dada}.drawing-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}.drawing-toolbar-delete{margin-top:0;margin-left:auto}.svg-container{border:1px solid var(--line);background-color:#fbfcfe;border-radius:var(--radius-sm);margin-bottom:0;overflow:hidden;flex:0 0 auto;position:relative;width:100%;user-select:none;-webkit-user-select:none;aspect-ratio:16 / 9;height:clamp(330px,46.25vh,633px);min-height:clamp(330px,46.25vh,633px);max-height:clamp(330px,46.25vh,633px)}.canvas-pane.fullscreen .svg-container,.canvas-pane:fullscreen .svg-container{height:auto;min-height:0;max-height:none}.canvas-height-resizer{flex:0 0 18px;display:flex;align-items:center;justify-content:center;margin-top:4px;border-radius:999px;cursor:row-resize;touch-action:none}.canvas-height-resizer span{width:76px;height:5px;border-radius:999px;background:var(--line);box-shadow:0 6px 0 var(--line);transition:background .15s,box-shadow .15s}.canvas-height-resizer:hover span,.canvas-height-resizer:active span{background:var(--green);box-shadow:0 6px 0 var(--green)}.svg-container.cursor-idle{cursor:default}.svg-container.cursor-drawing{cursor:crosshair}.svg-container.cursor-moving{cursor:move}.svg-container.cursor-resizing{cursor:ew-resize}.svg-container.cursor-panning{cursor:grab}.svg-container.cursor-panning:active{cursor:grabbing}.tooltip{position:absolute;background:#132031d9;color:#fff;padding:4px 8px;font-size:12px;font-family:var(--mono);pointer-events:none;border-radius:4px}.nav-controls{position:absolute;bottom:20px;right:20px;display:flex;gap:8px;z-index:10}.story-selector-overlay{position:absolute;top:8px;right:8px;z-index:11;display:flex;align-items:center;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-sm);padding:4px 8px;box-shadow:var(--shadow)}.story-selector-overlay label{font-size:.8rem;font-weight:700;color:var(--muted);margin:0}.story-selector-overlay select{font-weight:700;font-size:.9rem;padding:2px 4px}.nav-btn{background:var(--card);border:1px solid var(--line);width:36px;height:36px;border-radius:var(--radius-sm);cursor:pointer;display:flex;justify-content:center;align-items:center;font-weight:700;font-size:1.2rem;box-shadow:var(--shadow);color:var(--muted);transition:all .2s}.nav-btn:hover{background-color:#e3ebf4;border-color:#7d93ad;color:var(--ink)}.result-summary{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.summary-card{background:#e6edf6;padding:10px 15px;border-radius:var(--radius-sm);border-left:4px solid var(--green);flex:1;min-width:140px}.summary-label{font-size:.72rem;color:var(--muted-2);text-transform:uppercase;letter-spacing:.05em;font-weight:700;font-family:var(--mono)}.summary-value{font-size:1.2rem;font-weight:700;color:var(--ink);font-family:var(--mono)}.table-container{overflow-x:auto;width:100%}table{width:100%;border-collapse:collapse;font-size:.82rem;font-family:var(--mono)}th,td{text-align:right;padding:8px;border-bottom:1px solid var(--line-soft);white-space:nowrap}th{text-align:right;background-color:#e6edf6;font-weight:700;font-size:.72rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted-2)}th:first-child,td:first-child{text-align:left}tbody tr:nth-child(2n){background:#ffffff73}.row-selected{background-color:#dbeafe!important}footer{margin-top:40px;padding:18px 20px;background:#fdf6e3;color:#8a6d00;border:1px solid #ecdcb0;border-radius:var(--radius-sm);font-size:.88rem;text-align:center}.building-outline{fill:#fff;stroke:#ccc;stroke-width:.2px;stroke-dasharray:1 1}.wall-line{stroke:#444;stroke-linecap:square;cursor:pointer}.wall-line:hover{stroke:var(--blue)}.wall-line.selected{stroke:var(--blue);filter:drop-shadow(0 0 2px rgba(37,99,235,.5))}.wall-handles{pointer-events:none}.wall-handle{fill:#ffffffc7;stroke:var(--blue);stroke-width:.08px;vector-effect:non-scaling-stroke}.wall-handle-cross{stroke:var(--blue);stroke-width:.06px;vector-effect:non-scaling-stroke}.center-line{stroke:red;stroke-dasharray:1 .5;stroke-width:.1px}.center-marker{fill:red;font-size:1px}.instruction-panel{background:#e6f0ff;border:1px solid #b9d4f5;color:#1f3349;padding:10px 12px;margin-bottom:10px;font-size:.88rem;border-radius:var(--radius-sm);min-height:4.6em}.calibration-marker{fill:var(--amber);stroke:#fff;stroke-width:.2px}.calibration-line{stroke:var(--amber);stroke-dasharray:.5 .5;stroke-width:.2px}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#13203180;display:flex;justify-content:center;align-items:center;z-index:1000}.modal-content{background:var(--card);padding:22px;border-radius:var(--radius);border:1px solid var(--line);min-width:300px;box-shadow:0 12px 32px #13203140}.modal-content h3{margin-top:0;margin-bottom:15px;color:var(--ink)}.modal-content p{margin-bottom:15px;color:var(--muted)}.modal-content input{width:100%;padding:8px;margin:10px 0 20px;font-size:1rem;border:1.5px solid var(--field-border);border-radius:6px;background:var(--field-bg);box-sizing:border-box}.modal-actions{display:flex;justify-content:flex-end;gap:10px}@media(max-width:960px){.container{max-width:100%;padding:10px}.workspace{flex-direction:column;min-height:auto}.canvas-pane{border-radius:var(--radius);min-height:420px}.panel-resizer{display:none}.side-panel{border-radius:var(--radius);margin-top:10px;width:100%!important;max-width:100%;min-width:0;min-height:400px}.svg-container{height:clamp(268px,46.25vh,475px);min-height:clamp(268px,46.25vh,475px);max-height:none}.nav-controls{bottom:12px;right:12px}.tabs{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:thin}.tab-button{flex:0 0 auto;padding:12px}}