body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f4f7fa;
  color: #333;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 800px;
  margin: auto;
  padding: 2rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  margin-top: 40px;
}

h1, h2 {
  text-align: center;
  color: #2c3e50;
}

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

textarea {
  width: 100%;
  height: 100px;
  padding: 0.75rem;
  font-size: 1rem;
  border: 1px solid #ccc;
  border-radius: 5px;
  resize: vertical;
}

button {
  display: block;
  width: 100%;
  padding: 1rem;
  background-color: #3498db;
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1.1rem;
  cursor: pointer;
}

button:hover {
  background-color: #2980b9;
}

#output {
  margin-top: 2rem;
  background: #f9f9f9;
  padding: 1rem;
  border-radius: 5px;
  font-family: monospace;
}