body {
  font-family: Arial, sans-serif;
  text-align: center;
  background: #f4f6f9;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 400px;
  margin: auto;
  background: white;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

h1 {
  color: #333;
}

canvas {
  border: 2px solid #000;
  background: #fff;
  cursor: crosshair;
}

.buttons {
  margin-top: 15px;
}

button {
  padding: 10px 20px;
  margin: 5px;
  font-size: 16px;
  border: none;
  border-radius: 8px;
  background: #0078ff;
  color: white;
  cursor: pointer;
}

button:hover {
  background: #005fcc;
}

#result {
  margin-top: 20px;
  font-size: 20px;
  color: #444;
}