body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #a1c4fd, #c2e9fb);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  background: white;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  width: 350px;
}

canvas {
  border: 2px solid #333;
  background: #fff;
  cursor: crosshair;
  border-radius: 8px;
}

.buttons {
  margin-top: 15px;
}

button {
  margin: 5px;
  padding: 10px 20px;
  border: none;
  background: #4a90e2;
  color: white;
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background: #357ab8;
}