body {
  font-family: Arial, sans-serif;
  max-width: 600px;
  margin: auto;
  padding: 20px;
  background-color: #f4f4f4;
}
h1 {
  text-align: center;
  color: #333;
}
input, button {
  width: 90%;
  padding: 10px;
  margin-top: 10px;
  font-size: 16px;
  border-radius: 5px;
  border: 1px solid #ccc;
}
button {
  background-color: #007bff;
  color: white;
  cursor: pointer;
  transition: background-color 0.3s;
}
button:hover {
  background-color: #0056b3;
}
.result {
  margin-top: 20px;
  background: #fff;
  padding: 15px;
  border-radius: 5px;
  word-break: break-all;
}
.success {
  color: green;
  font-weight: bold;
}