.mfc-course-grid { display: flex; flex-wrap: wrap; gap: 16px; margin: 16px 0; }
.mfc-course-card { border: 1px solid #ddd; border-radius: 8px; padding: 16px; width: 260px; }
.mfc-progress-bar { background: #eee; border-radius: 4px; height: 8px; overflow: hidden; margin: 8px 0; }
.mfc-progress-bar div { background: #2b7a0b; height: 100%; }
.mfc-auth-columns { display: flex; gap: 32px; flex-wrap: wrap; }
.mfc-login-box, .mfc-register-box { flex: 1; min-width: 260px; }
.mfc-viewer-layout { display: flex; gap: 24px; }
.mfc-lesson-list { width: 260px; flex-shrink: 0; }
.mfc-lesson-item { display: block; padding: 8px; text-decoration: none; border-radius: 4px; margin-bottom: 4px; }
.mfc-lesson-item.active { background: #eef; font-weight: bold; }
.mfc-lesson-item.done { color: #2b7a0b; }
.mfc-lesson-content { flex: 1; }
.mfc-video-wrap { position: relative; padding-bottom: 56.25%; height: 0; }
.mfc-video-wrap #mfc-yt-player { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.mfc-quiz-box { margin-top: 24px; border-top: 1px solid #ddd; padding-top: 16px; }
.mfc-quiz-question { margin-bottom: 16px; }
.mfc-error { color: #b00020; }
.mfc-success { color: #2b7a0b; }
.mfc-module-title { font-weight: bold; margin: 12px 0 4px; text-transform: uppercase; font-size: 12px; color: #666; }
.mfc-lesson-item.locked { display: block; padding: 8px; color: #999; cursor: not-allowed; }
.mfc-assignment-box { margin-top: 24px; border-top: 1px solid #ddd; padding-top: 16px; }
.mfc-assignment-item { margin-bottom: 16px; }
.mfc-assignment-form textarea { display: block; width: 100%; max-width: 400px; margin: 8px 0; }
.mfc-certificate-banner { margin-top: 24px; padding: 16px; background: #fff8e1; border: 1px solid #ffd54f; border-radius: 6px; }
.mfc-reviews-section { margin-top: 32px; border-top: 1px solid #ddd; padding-top: 16px; }
.mfc-review-item { border-bottom: 1px solid #eee; padding: 8px 0; }
.mfc-certificate-page { display: flex; justify-content: center; padding: 40px 16px; }
.mfc-certificate-card { border: 8px double #b8860b; padding: 40px; text-align: center; max-width: 600px; width: 100%; }
.mfc-certificate-card h1 { font-family: Georgia, serif; margin: 12px 0; }
@media print { .mfc-certificate-card button { display: none; } }