/* lms.css — Quiz, Comments, Certificate */
.mb-quiz-wrap { background: #fff; border: 1px solid #E5E7EB; border-radius: 12px; padding: 32px; margin: 32px 0; }
.mb-quiz-title { font-size: 20px; font-weight: 700; margin-bottom: 6px; }
.mb-quiz-meta  { font-size: 13px; color: #9CA3AF; margin-bottom: 24px; }
.mb-quiz-question { margin-bottom: 28px; }
.mb-quiz-question-text { font-size: 15px; font-weight: 600; color: #1F2937; margin-bottom: 14px; }
.mb-quiz-answer { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border: 1.5px solid #E5E7EB; border-radius: 8px; margin-bottom: 8px; cursor: pointer; transition: all 0.15s; font-size: 14px; }
.mb-quiz-answer:hover { border-color: #F97316; background: rgba(249,115,22,0.04); }
.mb-quiz-answer input[type=radio] { accent-color: #F97316; flex-shrink:0; }
.mb-quiz-result { text-align: center; padding: 32px; }
.mb-quiz-result-score { font-size: 64px; font-weight: 800; line-height: 1; letter-spacing: -2px; }
.mb-quiz-result-score.pass { color: #16A34A; }
.mb-quiz-result-score.fail { color: #DC2626; }

.mb-comments-wrap { margin: 40px 0; }
.mb-comments-title { font-size: 18px; font-weight: 700; margin-bottom: 20px; }
.mb-comment-form textarea { width: 100%; padding: 12px; border: 1.5px solid #E5E7EB; border-radius: 8px; font-family: inherit; font-size: 14px; resize: vertical; min-height: 80px; outline: none; }
.mb-comment-form textarea:focus { border-color: #F97316; box-shadow: 0 0 0 3px rgba(249,115,22,0.1); }
.mb-comment-item { display: flex; gap: 12px; padding: 16px 0; border-bottom: 1px solid #F3F4F6; }
.mb-comment-avatar { width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg,#F97316,#FBBF24); display: flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 700; color: white; flex-shrink: 0; }
.mb-comment-author { font-size: 13px; font-weight: 600; color: #1F2937; }
.mb-comment-date   { font-size: 11px; color: #9CA3AF; margin-left: 8px; }
.mb-comment-text   { font-size: 14px; color: #6B7280; margin-top: 4px; line-height: 1.6; }
.mb-comment-reply  { font-size: 12px; color: #F97316; cursor: pointer; margin-top: 6px; font-weight: 600; }
.mb-comment-replies { margin-left: 48px; }

.mb-cert-banner { background: linear-gradient(135deg, #1F2937, #374151); border-radius: 12px; padding: 28px 32px; display: flex; align-items: center; justify-content: space-between; margin: 32px 0; }
.mb-cert-title { font-size: 18px; font-weight: 700; color: white; margin-bottom: 4px; }
.mb-cert-sub   { font-size: 13px; color: rgba(255,255,255,0.5); }