body {
  font-family: system-ui, sans-serif;
  margin: 2rem;
  background: #111;
  color: #eee;
}

h1, h2 {
  color: #4caf50;
}

textarea {
  width: 100%;
  font-family: monospace;
  background: #222;
  color: #eee;
  border: 1px solid #444;
  padding: 0.5rem;
}

input[type="file"] {
  margin-top: 0.5rem;
}

button {
  padding: 0.6rem 1.2rem;
  background: #4caf50;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 1rem;
  border-radius: 4px;
}

button:hover {
  background: #43a047;
}

audio {
  margin-top: 1rem;
  width: 100%;
}