:root{--ink:#172033;--muted:#667085;--line:#d7dce5;--panel:#f8f9fb;--blue:#316fea;--blue-dark:#245bcc;--danger:#c73535;--shadow:0 8px 30px rgba(20,34,60,.12)}
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.calculation-area{pointer-events:none}.calculation-mask{fill:rgba(20,29,45,.34)}.calculation-boundary{fill:none;stroke:#ff7a00;stroke-width:3;stroke-dasharray:9 5;vector-effect:non-scaling-stroke}.calculation-label{fill:#b34f00;font:700 11px Inter,Segoe UI,Arial,sans-serif;paint-order:stroke;stroke:#fff;stroke-width:4px}#setCalculationAreaBtn.active,#checkGeometryBtn[aria-pressed="true"]{color:#fff;background:#316fea;border-color:#316fea}
#backgroundControls>button{margin-top:9px}#backgroundControls .background-calibration{margin-top:10px}
.tool-options{display:grid;gap:6px;margin-top:10px;padding:9px;border:1px solid var(--line);border-radius:7px;background:#fff}.tool-options label{display:flex;align-items:center;gap:7px;color:var(--muted);font-size:11px}.tool-options input{margin:0}.coordinate-labels,.smart-guides{pointer-events:none}.coordinate-major-line{stroke:#8fa0b8;stroke-width:1;stroke-opacity:.32;vector-effect:non-scaling-stroke}.coordinate-label{fill:#445269;font:600 10px Consolas,monospace;paint-order:stroke;stroke:#fff;stroke-width:4px;stroke-linejoin:round}.smart-guide{stroke:#ed2ca7;stroke-width:1.5;stroke-dasharray:7 4;vector-effect:non-scaling-stroke}.smart-guide-point{fill:#ed2ca7;stroke:#fff;stroke-width:2;vector-effect:non-scaling-stroke}.smart-guide-label{fill:#b00076;font:700 10px Consolas,monospace;paint-order:stroke;stroke:#fff;stroke-width:4px}
.ifc-view-buttons{display:grid;grid-template-columns:repeat(5,1fr);gap:4px;margin-bottom:14px}.ifc-view-buttons button{padding:6px 3px;font-size:10px}#ifcCanvas.panning{cursor:grabbing}
.custom-guide-actions{display:grid;grid-template-columns:1fr 1fr auto;gap:4px}.custom-guide-actions button{padding:6px 4px;font-size:10px}.tool-options>small{color:var(--muted);font-size:10px}.custom-guide{stroke:#18a0fb;stroke-width:1.5;vector-effect:non-scaling-stroke;cursor:move;pointer-events:stroke}.custom-guide:hover{stroke:#006fc9;stroke-width:3}.custom-guide-label{fill:#006fc9;font:700 10px Consolas,monospace;paint-order:stroke;stroke:#fff;stroke-width:4px;pointer-events:none}