* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: black;
  color: white;
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  flex-direction: column;
}

canvas {
  background: #111;
  border: 2px solid white;
}

#scoreboard {
  font-size: 24px;
  margin: 10px;
}

#gameOver {
  display: none;
  font-size: 36px;
  margin: 20px;
  color: gold;
  font-weight: bold;
  text-align: center;
}

#restartBtn {
  display: none;
  padding: 10px 20px;
  font-size: 18px;
  cursor: pointer;
}