body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 1rem;
  background: #f5f5f5;
  color: #333;
}

.container {
  max-width: 600px;
  margin: auto;
  text-align: center;
  background: #fff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

input[type="file"] {
  margin-top: 1rem;
}

canvas {
  display: block;
  margin: 2rem auto;
  max-width: 100%;
  border: 1px solid #ccc;
}

.buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

button, a {
  padding: 10px 20px;
  background: #0070f3;
  color: #fff;
  border: none;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s ease;
}

button:hover, a:hover {
  background: #005dc1;
}

footer {
  margin-top: 3rem;
  text-align: center;
  font-size: 0.9rem;
}