body {
  background-color: #f7f7f7;
  font-family: Arial, sans-serif;
  text-align: center;
  padding: 40px;
}

.container {
  max-width: 500px;
  margin: auto;
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1 {
  color: #c0392b;
}

input {
  padding: 10px;
  font-size: 1rem;
  width: 80%;
  margin-top: 15px;
  border: 1px solid #ccc;
  border-radius: 8px;
}

button {
  margin-top: 15px;
  padding: 10px 20px;
  font-size: 1rem;
  background-color: #c0392b;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background-color: #a93226;
}

#result {
  margin-top: 20px;
  font-weight: bold;
  color: #2c3e50;
}