/* ===== ひよこ理解度テスト ===== */
.qc-quiz-wrapper *,
.qc-quiz-wrapper *::before,
.qc-quiz-wrapper *::after {
  box-sizing: border-box;
}
.qc-quiz-wrapper {
  font-family: 'Helvetica Neue', Arial, 'Hiragino Sans', Meiryo, sans-serif;
  background: #f0f4f8;
  padding: 24px 16px;
  border-radius: 16px;
  margin: 24px 0;
}
.qc-quiz-wrapper .container { max-width: 720px; margin: 0 auto; }
.qc-quiz-wrapper .score-board {
  background: #fff; border-radius: 12px; padding: 20px 24px; margin-bottom: 24px;
  display: flex; align-items: center; justify-content: space-between;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
}
.qc-quiz-wrapper .score-label { font-size: 14px; color: #666; }
.qc-quiz-wrapper .score-value { font-size: 36px; font-weight: 900; color: #1a1a2e; }
.qc-quiz-wrapper .score-max { font-size: 16px; color: #aaa; font-weight: 500; }
.qc-quiz-wrapper .progress-bar {
  width: 100%; height: 8px; background: #eee; border-radius: 99px;
  margin-top: 10px; overflow: hidden;
}
.qc-quiz-wrapper .progress-fill {
  height: 100%; background: linear-gradient(90deg, #0a7c42, #1abc6b);
  border-radius: 99px; transition: width 0.5s ease; width: 0%;
}
.qc-quiz-wrapper .quiz-card {
  background: #fff; border-radius: 14px; padding: 24px 28px; margin-bottom: 20px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  transition: box-shadow 0.2s;
}
.qc-quiz-wrapper .quiz-card.answered { box-shadow: 0 2px 16px rgba(0,0,0,0.12); }
.qc-quiz-wrapper .q-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.qc-quiz-wrapper .q-num {
  background: #1a1a2e; color: #fff; border-radius: 20px;
  padding: 3px 12px; font-size: 12px; font-weight: 700;
}
.qc-quiz-wrapper .q-tag {
  background: #eef2ff; color: #3730a3; border-radius: 20px;
  padding: 3px 10px; font-size: 11px; font-weight: 600;
}
.qc-quiz-wrapper .q-text {
  font-size: 15px; font-weight: 700; color: #1a1a2e;
  line-height: 1.6; margin-bottom: 16px;
}
.qc-quiz-wrapper .options { display: flex; flex-direction: column; gap: 8px; }
.qc-quiz-wrapper .option-btn {
  background: #f8f9fa; border: 2px solid #e9ecef; border-radius: 10px;
  padding: 12px 16px; font-size: 14px; text-align: left;
  cursor: pointer; transition: all 0.15s; color: #333; line-height: 1.5;
  width: 100%;
}
.qc-quiz-wrapper .option-btn:hover:not(:disabled) { background: #eef2ff; border-color: #818cf8; }
.qc-quiz-wrapper .option-btn.selected { background: #eef2ff; border-color: #4f46e5; color: #3730a3; font-weight: 700; }
.qc-quiz-wrapper .option-btn.correct { background: #e6f9f0; border-color: #0a7c42; color: #0a7c42; font-weight: 700; }
.qc-quiz-wrapper .option-btn.wrong { background: #fdecea; border-color: #c0392b; color: #c0392b; }
.qc-quiz-wrapper .option-btn.show-correct { background: #e6f9f0; border-color: #0a7c42; color: #0a7c42; font-weight: 700; }
.qc-quiz-wrapper .option-btn:disabled { cursor: default; }
.qc-quiz-wrapper .reveal-btn {
  display: none; width: 100%; padding: 18px;
  background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
  color: #fff; border: none; border-radius: 12px;
  font-size: 17px; font-weight: 700; cursor: pointer;
  margin-bottom: 24px; transition: opacity 0.2s;
  box-shadow: 0 4px 16px rgba(79,70,229,0.3);
}
.qc-quiz-wrapper .reveal-btn:hover { opacity: 0.88; }
.qc-quiz-wrapper .explanation {
  margin-top: 14px; padding: 14px 16px;
  background: #f8f9fa; border-left: 4px solid #818cf8;
  border-radius: 0 8px 8px 0;
  font-size: 13px; color: #444; line-height: 1.7;
  display: none;
}
.qc-quiz-wrapper .explanation.show { display: block; }
.qc-quiz-wrapper .explanation strong { color: #1a1a2e; }
.qc-quiz-wrapper .result-badge {
  display: inline-block; padding: 4px 12px; border-radius: 20px;
  font-size: 13px; font-weight: 700;
  margin-top: 8px; margin-bottom: 4px;
}
.qc-quiz-wrapper .result-badge.ok { background: #e6f9f0; color: #0a7c42; }
.qc-quiz-wrapper .result-badge.ng { background: #fdecea; color: #c0392b; }
.qc-quiz-wrapper .reset-btn {
  display: none; width: 100%; padding: 16px;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: #fff; border: none; border-radius: 12px;
  font-size: 16px; font-weight: 700; cursor: pointer;
  margin-top: 8px; transition: opacity 0.2s;
}
.qc-quiz-wrapper .reset-btn:hover { opacity: 0.88; }
.qc-quiz-wrapper .finish-msg {
  text-align: center; padding: 24px;
  background: #fff; border-radius: 14px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.07);
  margin-bottom: 20px; display: none;
}
.qc-quiz-wrapper .finish-msg.show { display: block; }
.qc-quiz-wrapper .finish-msg .big { font-size: 48px; margin-bottom: 8px; }
.qc-quiz-wrapper .finish-msg h2 { font-size: 20px; font-weight: 800; color: #1a1a2e; margin-bottom: 6px; }
.qc-quiz-wrapper .finish-msg p { color: #666; font-size: 14px; }
.qc-quiz-wrapper .yt-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: #ff0000; color: #fff; text-decoration: none;
  font-size: 15px; font-weight: 700; padding: 12px 24px;
  border-radius: 10px; margin-top: 16px; margin-bottom: 12px;
  transition: opacity 0.2s;
}
.qc-quiz-wrapper .yt-btn:hover { opacity: 0.85; }
.qc-quiz-wrapper .comment-prompt {
  font-size: 13px; color: #555; margin-top: 0;
  padding: 10px 16px; background: #f0f4f8;
  border-radius: 8px; line-height: 1.6;
}