* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background-color: #0f0f1a;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  overflow: hidden;
  font-family: 'Courier New', Courier, monospace;
  color: #fff;
}

canvas {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  width: 800px;
  height: 600px;
  background-color: #1a1c2c;
  border: 4px solid #566c86;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

#ui {
  position: absolute;
  top: 24px;
  left: 24px;
  pointer-events: none;
  text-shadow: 2px 2px 0 #000;
}

#score {
  font-size: 28px;
  font-weight: bold;
  color: #ffcd75;
}

#controls {
  font-size: 14px;
  margin-top: 8px;
  opacity: 0.8;
  color: #c0cbdc;
}