.quiz-progress-container{padding:4px;border-radius:12px;margin-bottom:20px;box-shadow:0 4px 15px rgba(0,0,0,.1);}.quiz-progress-track{display:flex;gap:4px;background:rgba(255,255,255,.2);border-radius:8px;padding:4px;}.quiz-progress-segment{flex:1;height:8px;background:rgba(255,255,255,.3);border-radius:4px;transition:all .3s ease;}.quiz-progress-segment.completed{background:#28a745;box-shadow:0 0 8px rgba(40,167,69,.4);}.quiz-progress-segment.current{background:#ffc107;box-shadow:0 0 8px rgba(255,193,7,.4);animation:pulse 2s infinite;}@keyframes pulse{0%,100%{opacity:1}50%{opacity:.7}}.quiz-option{background:#f8f9fa;border:2px solid #e9ecef;border-radius:8px;padding:15px;margin-bottom:10px;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden;}.quiz-option::before{content:'';position:absolute;left:0;top:0;height:100%;width:0;background:linear-gradient(90deg,rgba(0,123,255,.1),rgba(0,123,255,.05));transition:width .3s 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0!important;}.nav-btn{position:relative;overflow:hidden;border-radius:8px!important;font-weight:600!important;text-transform:uppercase;letter-spacing:.5px;transition:all .3s ease!important;}.nav-btn::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s ease;}.nav-btn:hover::before{left:100%;}#quizLoading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:200px;}.loading-spinner{width:50px;height:50px;border:4px solid #f3f3f3;border-top:4px solid #007bff;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:20px;}@keyframes spin{0%{transform:rotate(0deg)}100%{transform:rotate(360deg)}}#welcomeModal{background:rgba(0,0,0,.7);backdrop-filter:blur(5px);}.modal-content{border-radius:15px;border:none;box-shadow:0 15px 35px rgba(0,0,0,.2);overflow:hidden;}.modal-header{background:linear-gradient(135deg,#667eea 0%,#764ba2 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(max-width:768px){.quiz-option{padding:12px;margin-bottom:8px}.score-percentage{font-size:2rem!important}.nav-btn{width:100%;margin-bottom:10px}.navigation-options{flex-direction:column;gap:10px}}.quiz-option:focus{outline:3px solid #007bff;outline-offset:2px;}.nav-btn:focus{outline:3px solid #007bff;outline-offset:2px;}.quiz-card-enter{animation:slideInUp .5s ease-out;}@keyframes slideInUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.result-enter{animation:fadeInScale .6s ease-out;}@keyframes fadeInScale{from{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}.quiz-container{max-width:800px;margin:0 auto;padding:15px;}@media (max-width:768px){.quiz-container{padding:10px}.quiz-card-body{padding:15px}.quiz-question{font-size:1.1rem}.quiz-nav-buttons{flex-direction:column;gap:10px;width:100%}.quiz-back-btn,.quiz-next-btn{width:100%;min-width:auto}.quiz-option{padding:12px}.quiz-option input[type="radio"]{width:16px;height:16px}}.quiz-options{max-width:100%;}.quiz-option:last-child{margin-bottom:0;}.quiz-card{overflow:hidden;}.quiz-question{word-wrap:break-word;padding:4px;margin-bottom:20px;position:relative;overflow:hidden;}.quiz-progress-track{display:flex;height:8px;border-radius:6px;overflow:hidden;background:#e9ecef;}.quiz-progress-segment{flex:1;margin-right:2px;background:#e9ecef;transition:background-color .3s ease;}.quiz-progress-segment:last-child{margin-right:0;}.quiz-progress-segment.completed{background:#28a745;}.quiz-progress-segment.current{background:#007bff;animation:pulse 1.5s infinite;}@keyframes pulse{0%,100%{opacity:1}50%{opacity:.7}}.quiz-card{background:white;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.1);border:1px solid #e9ecef;}.quiz-card-body{padding:20px;min-height:200px;}.quiz-question{font-size:1.2rem;font-weight:600;color:#2c3e50;margin-bottom:20px;line-height:1.4;}.quiz-option{background:#f8f9fa;border:2px solid #e9ecef;border-radius:8px;padding:15px;margin-bottom:12px;cursor:pointer;transition:all .2s ease;display:flex;align-items:flex-start;gap:12px;user-select:none;position:relative;}.quiz-option:hover{border-color:#007bff;transform:translateY(-1px);box-shadow:0 2px 8px rgba(0,123,255,.1);background:#f0f8ff;}.quiz-option:active{transform:translateY(0);box-shadow:0 1px 4px rgba(0,123,255,.2);}.quiz-option.selected{border-color:#007bff;background:#e3f2fd;box-shadow:0 0 0 3px rgba(0,123,255,.1);}.quiz-option.correct{border-color:#28a745;background:#d4edda;}.quiz-option.incorrect{border-color:#dc3545;background:#f8d7da;}.quiz-option input[type="radio"]{margin:0;margin-top:2px;flex-shrink:0;width:18px;height:18px;accent-color:#007bff;pointer-events:none;}.quiz-option label{margin:0;cursor:pointer;font-weight:500;color:#495057;line-height:1.5;flex:1;pointer-events:none;}.quiz-card-footer{background:#f8f9fa;padding:15px 20px;border-top:1px solid #e9ecef;border-radius:0 0 12px 12px;display:flex;justify-content:center;align-items:center;}.quiz-nav-buttons{display:flex;gap:15px;align-items:center;}.quiz-back-btn,.quiz-next-btn{padding:12px 24px;border:none;border-radius:8px;font-weight:600;font-size:.95rem;transition:all .2s ease;cursor:pointer;min-width:120px;display:flex;align-items:center;justify-content:center;gap:8px;}.quiz-back-btn{background:#6c757d;color:white;border:2px solid #6c757d;}.quiz-back-btn:hover:not(:disabled){background:#5a6268;border-color:#5a6268;transform:translateY(-1px);box-shadow:0 4px 8px rgba(108,117,125,.3);}.quiz-back-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}.quiz-next-btn{background:#007bff;color:white;border:2px solid #007bff;}.quiz-next-btn:hover:not(:disabled){background:#0056b3;border-color:#0056b3;transform:translateY(-1px);box-shadow:0 4px 8px rgba(0,123,255,.3);}.quiz-next-btn:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:none;}.quiz-status{background:#007bff;color:white;padding:8px 15px;border-radius:20px;font-weight:600;margin-bottom:10px;text-align:center;}.quiz-result{background:#28a745;color:white;padding:20px;border-radius:12px;text-align:center;font-size:1.3rem;font-weight:600;margin:15px 0;}.review-section{margin-top:20px;}.review-item{background:white;border:1px solid #e9ecef;border-radius:8px;padding:15px;margin-bottom:12px;}.review-question{font-weight:600;margin-bottom:15px;color:#2c3e50;}.review-option{padding:8px 15px;margin-bottom:8px;border-radius:6px;}.review-option.correct{background:#d4edda;color:#155724;}.review-option.incorrect{background:#f8d7da;color:#721c24;}.bg-light.py-10{padding-top:1.5rem!important;padding-bottom:1.5rem!important;}.quiz-container.mb-10{margin-bottom:2rem!important;}.bg-light{padding:40px 0!important;}.single-post{margin-bottom:0!important;}.single-post 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ease-out;}@keyframes modalSlideIn{from{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}.welcome-title{font-size:2rem;font-weight:700;color:#2c3e50;margin-bottom:15px;}.welcome-subtitle{font-size:1.1rem;color:#6c757d;margin-bottom:30px;line-height:1.5;}.name-input-group{margin-bottom:25px;}.name-input{width:100%;padding:15px 20px;border:2px solid #e9ecef;border-radius:12px;font-size:1.1rem;text-align:center;transition:border-color .3s ease;background:#f8f9fa;}.name-input:focus{outline:none;border-color:#007bff;background:white;box-shadow:0 0 0 3px rgba(0,123,255,.1);}.welcome-btn{background:linear-gradient(135deg,#007bff,#0056b3);color:white;border:none;padding:15px 30px;border-radius:12px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:all .3s ease;width:100%;}.welcome-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,123,255,.3);}.welcome-btn:disabled{opacity:.6;cursor:not-allowed;transform:none;}.returning-visitor{background:linear-gradient(135deg,#28a745,#20c997);color:white;padding:20px;border-radius:12px;margin-bottom:20px;text-align:center;}.returning-visitor h4{margin:0 0 10px 0;font-weight:700;}.returning-visitor p{margin:0;opacity:.9;}.review-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px;flex-wrap:wrap;gap:15px;}.review-title{margin:0;color:#2c3e50;font-weight:600;}.answer-filter-options{display:flex;gap:10px;background:#f8f9fa;padding:5px;border-radius:8px;border:1px solid #e9ecef;}.filter-btn{padding:8px 16px;border:none;border-radius:6px;background:transparent;color:#6c757d;font-weight:500;font-size:.9rem;cursor:pointer;transition:all .2s ease;}.filter-btn:hover{background:#e9ecef;color:#495057;}.filter-btn.active{background:#007bff;color:white;box-shadow:0 2px 4px rgba(0,123,255,.2);}.question-header{display:flex;align-items:flex-start;gap:10px;margin-bottom:15px;}.question-status{font-size:1.2rem;margin-top:2px;flex-shrink:0;}.correct-status{color:#28a745;}.incorrect-status{color:#dc3545;}.review-item.correct-answer{border-left:4px solid #28a745;background:#f8fff9;}.review-item.incorrect-answer{border-left:4px solid #dc3545;background:#fff8f8;}.answer-options{margin-left:30px;margin-bottom:15px;}.empty-state{text-align:center;padding:40px 20px;background:linear-gradient(135deg,#28a745,#20c997);color:white;border-radius:12px;margin:20px 0;}.empty-icon{font-size:3rem;margin-bottom:15px;}.empty-state h5{color:white;font-weight:700;margin-bottom:10px;}.empty-state p{margin:0;opacity:.9;}.navigation-options{display:flex;gap:15px;justify-content:center;flex-wrap:wrap;margin-top:20px;}.nav-btn{padding:12px 24px;border:none;border-radius:8px;font-weight:600;font-size:.95rem;cursor:pointer;transition:all .2s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px;min-width:160px;justify-content:center;}.nav-btn.primary-btn{background:linear-gradient(135deg,#007bff,#0056b3);color:white;border:2px solid transparent;}.nav-btn.primary-btn:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,123,255,.3);}.nav-btn.secondary-btn{background:#f8f9fa;color:#495057;border:2px solid #e9ecef;}.nav-btn.secondary-btn:hover{background:#e9ecef;border-color:#007bff;color:#007bff;transform:translateY(-1px);}.final-cta{background:#f8f9fa;border:1px solid #e9ecef;border-radius:12px;padding:25px;text-align:center;margin-top:30px;}.final-cta h5{color:#2c3e50;margin-bottom:15px;font-weight:600;}@media (max-width:768px){.navigation-options{flex-direction:column;gap:10px}.nav-btn{width:100%;min-width:auto}}@media (max-width:768px){.review-header{flex-direction:column;align-items:stretch}.answer-filter-options{justify-content:center}.filter-btn{flex:1;text-align:center}.answer-options{margin-left:0}.question-header{flex-direction:column;gap:5px}}.quiz-score-display{text-align:center;margin-bottom:25px;}.score-percentage{font-size:1.5rem;font-weight:700;color:#007bff;margin-top:10px;}.learning-suggestion,.success-celebration{background:#f8f9fa;border:1px solid #e9ecef;border-radius:12px;padding:25px;margin-top:20px;text-align:center;}.learning-suggestion{border-left:4px solid #ffc107;}.success-celebration{border-left:4px solid #28a745;}.navigation-options{display:flex;gap:15px;justify-content:center;flex-wrap:wrap;}.nav-btn{padding:12px 24px;border:none;border-radius:8px;font-weight:600;font-size:.95rem;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px;min-width:180px;justify-content:center;}.nav-btn.primary-btn{background:linear-gradient(135deg,#007bff,#0056b3);color:white;box-shadow:0 2px 10px rgba(0,123,255,.3);}.nav-btn.primary-btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,123,255,.4);}.nav-btn.secondary-btn{background:#fff;color:#007bff;border:2px solid #007bff;}.nav-btn.secondary-btn:hover{background:#007bff;color:white;transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,123,255,.3);}.final-cta{background:linear-gradient(135deg,#f8f9fa,#e9ecef);border:1px solid #dee2e6;border-radius:12px;padding:25px;margin-top:30px;text-align:center;}.final-cta h5{color:#2c3e50;margin-bottom:20px;font-weight:600;}@@media (max-width:768px){.navigation-options{flex-direction:column;align-items:center}.nav-btn{width:100%;max-width:280px}}.code-snippet-container{margin:15px 0;border-radius:8px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.1);}.code-snippet-container pre{margin:0;padding:15px;background:#2d3748;color:#e2e8f0;font-family:'Fira Code','Monaco','Cascadia Code','Consolas',monospace;font-size:12px;line-height:1.4;overflow-x:auto;white-space:pre-wrap;word-wrap:break-word;}.code-snippet-container code{background:transparent;color:inherit;padding:0;border:none;font-size:inherit;}.language-csharp{border-left:4px solid #239120;}.language-python{border-left:4px solid #3776ab;}.language-javascript{border-left:4px solid #f7df1e;}.language-java{border-left:4px solid #ed8b00;}.language-typescript{border-left:4px solid #3178c6;}.language-cpp{border-left:4px solid #00599c;}.language-php{border-left:4px solid #777bb4;}.language-ruby{border-left:4px solid #cc342d;}.language-go{border-left:4px solid #00add8;}.code-snippet-container .keyword{color:#f92672;}.code-snippet-container .string{color:#a6e22e;}.code-snippet-container .comment{color:#75715e;font-style:italic;}.code-snippet-container .number{color:#ae81ff;}.code-snippet-container .operator{color:#f8f8f2;}@media (max-width:768px){.code-snippet-container pre{padding:15px;font-size:13px}}