body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  text-align: center;
  background: #fafafa;
  margin: 0;
  padding: 20px;
  color: #333;
}

h1 {
  margin-bottom: 10px;
}

/* Wrap input and button in a flex container */
.controls {
  margin-bottom: 20px;
  display: inline-flex;
  gap: 10px;
  align-items: center;
}

input[type="text"] {
  padding: 8px 12px;
  font-size: 1rem;
  width: 220px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

button {
  padding: 8px 16px;
  font-size: 1rem;
  cursor: pointer;
  border-radius: 4px;
  border: none;
  background-color: #6a5acd;
  color: white;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #483d8b;
}

canvas {
  margin-top: 10px;
  border: 1px solid #ccc;
  background: white;
  display: block;
  margin-left: auto;
  margin-right: auto;
}