body {
  background: #f0f0f0;
  font-family: Arial, sans-serif;
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.quiz-container {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 24px rgba(75,0,130,0.08);
  padding: 32px 24px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  transition: box-shadow 0.3s;
}

.quiz-title {
  color: #4B0082;
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.question {
  font-family: Verdana, Geneva, sans-serif;
  font-size: 18px;
  font-weight: bold;
  color: #333;
  margin-bottom: 20px;
}

.options {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.option-btn {
  font-family: Arial, sans-serif;
  font-size: 16px;
  background: #f0f0f0;
  color: #4B0082;
  border: 2px solid #4B0082;
  border-radius: 8px;
  padding: 12px 0;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.2s;
  outline: none;
}

.option-btn.selected {
  background: #4B0082;
  color: #fff;
  transform: scale(1.04);
}

.option-btn.correct {
  background: #4B0082;
  color: #fff;
  border-color: #4B0082;
  box-shadow: 0 0 8px #4B008244;
}

.option-btn.wrong {
  background: #ffdddd;
  color: #d8000c;
  border-color: #d8000c;
}

.next-btn {
  background: #4B0082;
  color: #fff;
  font-size: 16px;
  font-weight: bold;
  border: none;
  border-radius: 8px;
  padding: 12px 32px;
  cursor: pointer;
  margin-top: 8px;
  transition: background 0.2s, transform 0.2s;
  box-shadow: 0 2px 8px rgba(75,0,130,0.08);
  outline: none;
  opacity: 0.7;
}

.next-btn.enabled {
  opacity: 1;
  transform: scale(1.04);
}

.score {
  color: #4B0082;
  font-size: 1.1rem;
  margin-bottom: 12px;
  font-weight: bold;
}

.result-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

.play-again-btn {
  background: #fff;
  color: #4B0082;
  border: 2px solid #4B0082;
  border-radius: 8px;
  font-size: 16px;
  font-weight: bold;
  padding: 12px 32px;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, transform 0.2s;
  margin-top: 8px;
}

.play-again-btn:hover {
  background: #4B0082;
  color: #fff;
  transform: scale(1.04);
}

@media (max-width: 500px) {
  .quiz-container {
    padding: 18px 6px;
    max-width: 98vw;
  }
  .quiz-title {
    font-size: 1.3rem;
  }
  .question {
    font-size: 16px;
  }
  .option-btn, .next-btn, .play-again-btn {
    font-size: 15px;
    padding: 10px 20px;
  }
}