body {
  font-family: Arial, sans-serif;
  background-color: #f8f8f8;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.container {
  background-color: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.1);
  text-align: center;
  max-width: 400px;
}

input[type="number"] {
  padding: 8px;
  margin: 10px 0;
  width: 60px;
  font-size: 1rem;
}

.options {
  margin: 10px 0;
  font-size: 0.95rem;
  text-align: left;
}

.options label {
  display: block;
  margin-top: 5px;
}

button {
  padding: 10px 20px;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  background-color: #0077cc;
  color: white;
  border-radius: 6px;
  margin-top: 1rem;
}

#passwordBox {
  margin-top: 1.5rem;
  font-weight: bold;
  font-size: 1.2rem;
  word-break: break-all;
}

#copyMessage {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: green;
}