/*quiz*/
/* ==============================
   カード（問題ごとの囲み）
============================== */
.quiz-card {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
  padding: 2rem;
  transition: 0.3s;
}

.quiz-card:hover {
  box-shadow: 0 6px 14px rgba(0,0,0,0.15);
}

/* 問題タイトル */
.quiz-card h2 {
  font-size: 1.3rem;
  margin-bottom: 1rem;
  color: #004a8f;
}

/* 画像 */
.quiz-card img {
  border-radius: 8px;
  margin-bottom: 1rem;
  /* object-fit: cover; */
  width: 60%;
  height: auto;
  display: block;
  margin: 0 auto 1rem;
}


/* 質問文 */
.quiz-card .question {
  font-weight: 500;
  margin-bottom: 1rem;
}

/* ==============================
   選択肢ボタン
============================== */
.options {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-bottom: 1rem;
}

.opt {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 2px solid #ccc;
  border-radius: 10px;
  padding: 0.8rem 1rem;
  background: #fafafa;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.25s;
}

.opt:hover {
  background: #f0f8ff;
  border-color: #007bff;
}

/* 正解／不正解の表示色 */
.opt.correct {
  background-color: #e8fce8;
  border-color: #29a329;
  color: #1a661a;
}

.opt.wrong {
  background-color: #fde8e8;
  border-color: #d63031;
  color: #a00;
}

/* ==============================
   フィードバックエリア
============================== */
.feedback {
  font-weight: bold;
  font-size: 1.1rem;
  margin: 0.5rem 0 1rem;
}

.feedback.correct {
  color: #008000;
}

.feedback.wrong {
  color: #d63031;
}

/* ==============================
   解説部分
============================== */
.explanation {
  background: #f5faff;
  border-left: 4px solid #007bff;
  padding: 1rem;
  border-radius: 8px;
  margin-top: 1rem;
}

.explanation h3 {
  margin-top: 0;
  color: #004a8f;
}

.explanation p {
  margin: 0.5rem 0;
}

.explanation .source {
  font-size: 0.9rem;
  color: #666;
  margin-top: 0.5rem;
}

/* ==============================
   コントロール（再挑戦ボタンなど）
============================== */
.controls {
  margin-top: 1.2rem;
  text-align: right;
}

.retryBtn {
  background: #007bff;
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.6rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  transition: 0.25s;
}

.retryBtn:hover {
  background: #005fcc;
}