body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #000;
  color: #FFD700;
}

.screen {
  display: none;
  min-height: 100vh;
  padding: 20px;
  box-sizing: border-box;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.screen.active {
  display: flex;
}

input, select {
  padding: 10px;
  margin: 5px 0;
  border-radius: 5px;
  border: none;
  width: 250px;
  font-size: 16px;
}

.payment-option {
  display: flex;
  align-items: center;
  margin: 10px 0;
  width: 250px;
  background: #111;
  border-radius: 5px;
  padding: 5px 10px;
}

.payment-option input {
  margin-right: 10px;
  accent-color: #FFD700;
}

button {
  padding: 10px 20px;
  margin-top: 15px;
  background-color: #FFD700;
  color: #000;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-weight: bold;
}

button:hover {
  background-color: #e5c100;
}

#quiz-message {
  margin-top: 10px;
  font-weight: bold;
}

.level {
  background-color: #222;
  padding: 10px;
  margin: 5px;
  width: 250px;
  text-align: center;
  border-radius: 5px;
  cursor: pointer;
}

.level:hover {
  background-color: #333;
}

ul {
  list-style: none;
  padding: 0;
}