:root{--bg:#fafafa;--panel:#fff;--text:#263238;--muted:#78909c;--border:#e0e0e0;--accent:#1565c0;--error:#c62828;--warn:#ef6c00;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:14px}*{box-sizing:border-box}body{margin:0}button{font:inherit;border:1px solid var(--border);cursor:pointer;background:#fff;border-radius:4px;padding:4px 10px}button.active{background:var(--accent);color:#fff;border-color:var(--accent)}button.link{color:var(--accent);background:0 0;border:none;padding:0 4px}button:disabled{opacity:.5;cursor:default}input,select{font:inherit;border:1px solid var(--border);border-radius:4px;padding:3px 6px}.muted{color:var(--muted)}.error{color:var(--error)}.warn{color:var(--warn)}.row{flex-wrap:wrap;align-items:center;gap:8px;margin:4px 0;display:flex}.spacer{flex:1}.badge{background:#eceff1;border-radius:8px;margin-right:6px;padding:1px 6px;font-size:11px}.badge.ai{color:#4527a0;background:#ede7f6}.badge.user{color:#0d47a1;background:#e3f2fd}.project-list{max-width:640px;margin:40px auto}.project-list li{margin:6px 0}.editor{flex-direction:column;height:100vh;display:flex}.topbar{border-bottom:1px solid var(--border);background:var(--panel);align-items:center;gap:12px;padding:6px 12px;display:flex}.topbar .title{font-weight:600}.status{border-radius:8px;padding:1px 8px;font-size:12px}.status.ok{color:#2e7d32;background:#e8f5e9}.status.off{color:var(--error);background:#ffebee}.toolbar{border-bottom:1px solid var(--border);background:var(--panel);align-items:center;gap:6px;padding:6px 12px;display:flex}.toolbar .hint{color:var(--muted);margin-left:12px;font-size:12px}.workspace{flex:1;min-height:0;display:flex}.canvas-wrap{background:#fff;flex:1;position:relative;overflow:hidden}.canvas{touch-action:none;-webkit-user-select:none;user-select:none;display:block}.canvas.tool-polyline,.canvas.tool-rectangle{cursor:crosshair}.canvas.tool-move{cursor:move}.viewport-overlay{pointer-events:none;font-family:inherit;position:absolute;top:0;left:0}.statusbar{border-top:1px solid var(--border);background:var(--panel);align-items:center;gap:16px;min-height:22px;padding:2px 12px;font-size:12px;display:flex}.statusbar .coords{font-variant-numeric:tabular-nums;white-space:pre}.canvas-hint{background:#fff8e1;border-radius:4px;padding:4px 10px;position:absolute;bottom:12px;left:12px}.sidebar{border-left:1px solid var(--border);background:var(--panel);width:340px;overflow-y:auto}.panel{border-bottom:1px solid var(--border);padding:8px 12px}.panel h3{justify-content:space-between;align-items:center;margin:4px 0 8px;font-size:14px;display:flex}.panel ul{margin:0;padding:0;list-style:none}.materials li{justify-content:space-between;align-items:center;padding:2px 0;display:flex}.materials li.active{font-weight:600}.swatch{vertical-align:middle;border:1px solid #9e9e9e;width:14px;height:14px;margin:0 6px;display:inline-block}.field{grid-template-columns:1fr 110px 50px;align-items:center;gap:6px;margin:3px 0;display:grid}.field .unit{color:var(--muted);font-size:12px}.field .name{font-size:12px}.material-form,.schema-form{margin-top:6px}.activity li{border-bottom:1px dashed var(--border);grid-template-columns:auto 1fr auto;gap:2px 6px;padding:4px 0;display:grid}.activity li .muted{grid-column:2;font-size:11px}.analyses li{border-bottom:1px dashed var(--border);padding:6px 0}.result{background:#f5f5f5;border-radius:4px;margin-top:4px;padding:6px}.result .unverified{font-size:12px}.issues{border-top:1px solid var(--border);background:var(--panel);gap:12px;padding:4px 12px;font-size:12px;display:flex}.dialog-backdrop{z-index:10;background:#0000004d;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.dialog{background:#fff;border-radius:6px;width:460px;max-height:80vh;padding:16px;overflow:auto}.report{background:#f5f5f5;max-height:200px;padding:6px;font-size:11px;overflow:auto}.account{align-items:center;gap:10px;margin-left:12px;display:inline-flex}.auth-page{max-width:360px;margin:10vh auto;padding:0 16px}.auth-form{flex-direction:column;gap:10px;display:flex}.auth-form label{flex-direction:column;gap:4px;display:flex}.notice{border:1px solid var(--warn);background:#fff8e1;border-radius:4px;padding:8px 10px}.connect-page{max-width:900px;margin:0 auto;padding:8px 16px 40px}.copyable{align-items:flex-start;gap:8px;margin:6px 0;display:flex}.copyable pre{white-space:pre-wrap;word-break:break-all;background:#eceff1;border-radius:4px;flex:1;margin:0;padding:6px 8px}table.tokens{border-collapse:collapse;width:100%}table.tokens th,table.tokens td{text-align:left;border-bottom:1px solid var(--border);padding:4px 6px}input.small{width:64px}.water-region{border-top:1px solid var(--border);margin-top:6px;padding-top:6px}details.slices table{border-collapse:collapse;width:100%;font-size:12px}details.slices th,details.slices td{text-align:right;border-bottom:1px solid var(--border);padding:1px 4px}details.slices tr.warn td{color:var(--warn)}