body {
  font-family: "Inter", sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 0;
}

.quiz-container {
  max-width: 800px;
  margin: 50px auto;
  background: #fff;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.quiz-container h1 {
  text-align: center;
  color: #333;
}

.selected-text {
  background: #f0f4ff;
  border-left: 4px solid #007bff;
  padding: 10px 15px;
  margin-bottom: 20px;
  border-radius: 8px;
}

.quiz-question {
  margin-bottom: 20px;
}

.quiz-question p {
  font-weight: 600;
}

label {
  display: block;
  padding: 4px 0;
}

button {
  background-color: #007bff;
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 6px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

#result {
  margin-top: 20px;
  text-align: center;
  font-weight: bold;
}

.error {
  color: red;
  text-align: center;
}

#back-btn {
  display: block;
  margin: 20px auto 0 auto;
  background: #555;
}

#back-btn:hover {
  background: #333;
}

#quiz-setup {
  text-align: left;
  background: #f9f9f9;
  padding: 20px;
  border-radius: 8px;
  margin-bottom: 20px;
}

#quiz-setup label {
  font-weight: 600;
  margin-top: 10px;
  display: block;
}

#quiz-setup select {
  width: 100%;
  padding: 8px;
  border-radius: 6px;
  border: 1px solid #ccc;
  margin-top: 5px;
}

#start-quiz {
  margin-top: 15px;
  width: 100%;
  background-color: #007bff;
  color: #fff;
  border: none;
  padding: 10px;
  border-radius: 6px;
  cursor: pointer;
}

#start-quiz:hover {
  background-color: #0056b3;
}

.quiz-message {
  font-style: italic;
  color: gray;
  margin: 10px 0;
}

.quiz-question label {
  display: block;
  padding: 5px 10px;
  margin: 3px 0;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.quiz-question input[type="radio"] {
  margin-right: 8px;
}