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

.game-container {
  text-align: center;
  position: relative;
}

.score-board {
  display: flex;
  justify-content: space-between;
  color: #00ff00;
  font-size: 18px;
  margin-bottom: 10px;
}

canvas {
  border: 2px solid #00ff00;
  background: #000;
}

.game-over, .start-screen {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #00ff00;
  background: rgba(0, 0, 0, 0.8);
  padding: 30px;
  border: 2px solid #00ff00;
  border-radius: 10px;
}

.game-over h2, .start-screen h1 {
  margin: 0 0 20px 0;
  font-size: 32px;
}

.game-over p, .start-screen p {
  margin: 0 0 20px 0;
  font-size: 18px;
}

button {
  background: #00ff00;
  color: #000;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  font-family: 'Courier New', monospace;
}

button:hover {
  background: #00cc00;
}

#finalScore {
  color: #ff0000;
}