body {
  margin: 0;
  padding: 0;
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  font-family: 'Courier New', monospace;
  color: white;
}

#gameContainer {
  text-align: center;
}

canvas {
  border: 2px solid #fff;
  background: radial-gradient(circle, #001122 0%, #000000 100%);
}

.ui,
.ui-bottom {
  margin-top: 10px;
  font-size: 18px;
}

.ui-bottom button {
  height: 30px;
  width: 150px;
  font-size: 0.75rem;
  padding: 5px 20px;
}

button {
  background: #333;
  color: white;
  border: 2px solid #fff;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 10px;
  width: 150px;
}

button:hover {
  background: #555;
}

#instructions {
  margin-top: 10px;
  font-size: 14px;
  opacity: 0.8;
}