:root{font-family:Inter,ui-sans-serif,system-ui,Arial,sans-serif;color:#e7eef7;background:#07131f}*{box-sizing:border-box}body{margin:0;background:#07131f}button,input{font:inherit}.shell{max-width:1600px;margin:0 auto;padding:28px}header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:20px}h1{margin:4px 0 8px;font-size:30px}h2{margin:0 0 10px;font-size:18px}p{margin:0}.eyebrow{font-size:11px;letter-spacing:.18em;color:#67d9ff;font-weight:800}.badge{border:1px solid #2f5872;border-radius:999px;padding:8px 12px;color:#9fdfff}.step{display:inline-grid;place-items:center;min-width:26px;height:26px;padding:0 8px;border-radius:999px;background:#16384c;color:#8edfff;font-weight:800;margin-bottom:10px}.card{background:#0d2030;border:1px solid #23435a;border-radius:14px;padding:18px}.muted{color:#96aabc;margin-bottom:12px;line-height:1.45}.upload-grid{display:grid;grid-template-columns:1fr 1fr .8fr;gap:18px;margin-bottom:18px}.compact-card input[type=file]{width:100%;padding:10px;border:1px solid #31526a;border-radius:9px;background:#07131f;color:#dcecf6}.action-card{display:flex;flex-direction:column;align-items:flex-start}.action-card .muted{flex:1}.action-card button{width:100%;margin-top:8px}.file-summary{display:flex;flex-wrap:wrap;gap:7px 14px;margin-top:12px;color:#a9bfd0;font-size:13px}.file-summary strong{width:100%;color:#fff;overflow-wrap:anywhere}button{border:0;border-radius:8px;padding:10px 14px;background:#bcecff;color:#05111b;font-weight:800;cursor:pointer}button.secondary{background:#18364a;color:#d9edf8}button:disabled{opacity:.45;cursor:not-allowed}.preview-card{margin-bottom:18px}.section-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px}.toggle{white-space:nowrap;color:#bcd0df;font-size:13px;display:flex;gap:7px;align-items:center}.preview{width:100%;height:670px;background:#08131c;border:1px solid #294a60;border-radius:10px;display:block}.empty{min-height:420px;display:grid;place-items:center;border:1px dashed #31526a;border-radius:10px;color:#7892a5;background:#08131c}.cad-line{stroke:#c5d0d8;stroke-width:.75;vector-effect:non-scaling-stroke;opacity:.82}.room-area{fill:#2db4ff0f;stroke:#49c8ff;stroke-width:1.4;vector-effect:non-scaling-stroke}.allowed-area{fill:#49ffaf14;stroke:#62e6b2;stroke-width:1.4;stroke-dasharray:6 4;vector-effect:non-scaling-stroke}.obstacle{fill:#ff9f4340;stroke:#ffb264;stroke-width:1.5;vector-effect:non-scaling-stroke}.device-ring{fill:#ff4d5a2e;stroke:#ff5e6c;stroke-width:2.2;vector-effect:non-scaling-stroke}.device-fill{fill:#ff5e6c}.device-line{stroke:#ff5e6c;stroke-width:2.2;vector-effect:non-scaling-stroke}.metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px}.metrics{display:grid;grid-template-columns:1fr 1fr;gap:7px 14px;border:1px solid #23435a;border-radius:10px;padding:12px;color:#bcd0df}.metrics strong{grid-column:1 / -1;color:#fff}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{border:1px solid #31526a;background:#091722;border-radius:999px;padding:6px 9px;color:#a9bfd0;font-size:12px}.message{position:sticky;bottom:12px;margin-top:18px;padding:12px 14px;border:1px solid #31526a;border-radius:10px;background:#0d2030f5;box-shadow:0 12px 30px #00000040}@media(max-width:1050px){.upload-grid{grid-template-columns:1fr}header,.section-head{flex-direction:column}.preview{height:520px}}