body { margin:0; font-family: Inter, Arial, sans-serif; background: #0d1117; color:#e6edf3; }
#ui { position: absolute; z-index: 20; padding: 12px; left: 12px; top: 12px; background: rgba(0,0,0,0.45); border-radius: 8px; }
.controls { display:flex; gap:8px; align-items:center; }
#canvasWrapper { width: 100vw; height: 100vh; display:flex; align-items:center; justify-content:center; }
canvas { width:100vw; height:100vh; display:block; }
button, select, input { padding:6px 8px; border-radius:6px; background:#111; color:#e6edf3; border: 1px solid #2b2f35; }
#status { margin-top:8px; font-size:13px; opacity:0.85 }