body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #f4f7f9;
  padding: 20px;
}

.container {
  max-width: 700px;
  margin: auto;
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

input, textarea {
  width: 100%;
  padding: 10px;
  margin-top: 15px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

button {
  margin-top: 20px;
  padding: 10px 20px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
}

.output {
  margin-top: 20px;
  background: #eef;
  padding: 15px;
  white-space: pre-wrap;
  border-left: 5px solid #007bff;
}