body {
  font-family: Arial, sans-serif;
  background: #f7f7f7;
  text-align: center;
  padding: 20px;
}

h2 {
  color: #333;
  font-weight: 700;
  margin-bottom: 6px;
}

.quiz-card {
  background: #fff;
  padding: 18px;
  margin: 16px auto;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  max-width: 520px;
}

.prompt {
  color: #555;
  font-size: 14px;
  margin-bottom: 6px;
}

.question-box {
  font-size: 26px;
  font-weight: 700;
  color: #222;
  margin: 10px 0 18px 0;
}

#quiz-img {
  width: 100%;
  max-height: 260px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 14px;
  display: none;
}

.option-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 8px 0;
}

.answer-btn {
  flex: 1;
  margin: 0 6px;
  padding: 12px;
  font-size: 16px;
  border: none;
  border-radius: 10px;
  background: #87cefa;
  cursor: pointer;
  transition: 0.18s;
}

.answer-btn:hover {
  background: #4682b4;
  color: #fff;
}

.sound-btn {
  background: #ffb347;
  border: none;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  margin-left: 6px;
}

.sound-btn:hover {
  background: #ff8c00;
  color: #fff;
}

.result {
  margin-top: 14px;
  font-size: 18px;
  font-weight: 700;
  min-height: 24px;
  line-height: 1.5;
}

.explanation {
  font-size: 14px;
  font-weight: normal;
  color: #38761d;
  margin-top: 5px;
  padding: 5px;
  border-top: 1px solid #e0e0e0;
  display: block;
}

#nextBtn {
  display: none;
  margin-top: 12px;
  padding: 10px 16px;
  background: #90ee90;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 700;
}

#nextBtn:hover {
  background: #2e8b57;
  color: #fff;
}

.small {
  font-size: 13px;
  color: #666;
  margin-top: 8px;
}