body {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: linear-gradient(to bottom, #87ceeb 0%, #f0f8ff 100%);
  overflow: hidden;
  font-family: 'Arial', sans-serif;
}

#gameCanvas {
  border: 2px solid #fff;
  border-radius: 10px;
}

#score {
  position: absolute;
  top: 20px;
  left: 20px;
  font-size: 28px;
  color: #fff;
  text-shadow: 2px 2px 4px #000;
}

#gameOver {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: #fff;
  text-shadow: 2px 2px 4px #000;
}

#gameOver h1 {
  font-size: 48px;
}

#gameOver p {
  font-size: 24px;
}

#restartButton {
  padding: 15px 30px;
  font-size: 24px;
  cursor: pointer;
  background-color: #fff;
  border: none;
  border-radius: 10px;
  color: #87ceeb;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  transition: all 0.2s ease-in-out;
}

#restartButton:hover {
  background-color: #f0f8ff;
  transform: scale(1.05);
}