body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #0b0b2f;
  color: #fff;
  text-align: center;
}

.game-ui {
  max-width: 900px;
  margin: 0 auto;
  padding: 10px;
}

canvas {
  display: block;
  margin: 20px auto;
  background-color: #0b0b2f;
  border: 2px solid #fff;
  border-radius: 10px;
}

.buttons button {
  padding: 10px 20px;
  margin: 5px;
  font-size: 16px;
  cursor: pointer;
}

.orb {
  fill: yellow;
}