body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: 50px auto;
  padding: 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1, h2 {
  text-align: center;
}

form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

input {
  padding: 8px;
  font-size: 16px;
}

button {
  padding: 10px;
  font-size: 16px;
  background-color: #007BFF;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 4px;
}

button:hover {
  background-color: #0056b3;
}

.results {
  margin-top: 30px;
}

canvas {
  max-width: 100%;
  margin-top: 20px;
}