* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: #0a0a0a;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  font-family: monospace;
  overflow: hidden;
}
#frame {
  background: #111;
  border: 3px solid #333;
  border-radius: 8px;
  padding: 12px;
  box-shadow: 0 0 40px rgba(0,0,0,0.8), inset 0 0 20px rgba(0,0,0,0.5);
}
canvas {
  cursor: none;
  display: block;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}
#controls {
  margin-top: 12px;
  color: #6b6b6b;
  font-size: 11px;
  text-align: center;
  letter-spacing: 1px;
}
#controls span { color: #b0b0b0; }