body {
  font-family: system-ui, sans-serif;
  background: #f4f6f8;
  color: #222;
}

.container {
  max-width: 700px;
  margin: 60px auto;
  padding: 24px;
  background: white;
  border-radius: 12px;
}

textarea {
  width: 100%;
  height: 160px;
  margin-bottom: 12px;
  padding: 10px;
  font-family: monospace;
}

button {
  padding: 10px 16px;
  border: none;
  background: #4f46e5;
  color: white;
  border-radius: 6px;
  cursor: pointer;
}

pre {
  background: #111827;
  color: #e5e7eb;
  padding: 16px;
  margin-top: 16px;
  border-radius: 8px;
}