.enhanced-quiz-box{background:var(--color-card);border-radius:var(--border-radius-large);padding:var(--spacing-lg);box-shadow:var(--shadow-medium);border:1px solid rgba(255,255,255,.1);margin-bottom:var(--spacing-lg);overflow:hidden}.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg);padding-bottom:var(--spacing-md);border-bottom:1px solid rgba(255,255,255,.1)}.quiz-mode{font-weight:600;color:var(--color-accent-light);font-size:var(--font-size-md);background:rgba(0,0,0,.2);padding:var(--spacing-xs) var(--spacing-md);border-radius:var(--border-radius-medium)}.quiz-status{display:flex;align-items:center;gap:var(--spacing-md)}.lives-container{display:flex;gap:2px}.life-heart{opacity:.5;transition:all var(--transition-fast)}.life-heart.active{opacity:1}.life-heart.lost{filter:grayscale(1)}.infinity-lives{font-size:var(--font-size-lg)}.quiz-progress{font-size:var(--font-size-sm);color:var(--color-text-secondary)}.quiz-content{display:flex;flex-direction:column;gap:var(--spacing-lg)}.question h3{font-size:var(--font-size-lg);margin-bottom:var(--spacing-md);line-height:1.5}.options{display:flex;flex-direction:column;gap:var(--spacing-md)}.option-btn{background:var(--color-surface);border:1px solid rgba(255,255,255,.1);border-radius:var(--border-radius-medium);padding:var(--spacing-md) var(--spacing-lg);text-align:left;font-size:var(--font-size-md);color:var(--color-text-primary);cursor:pointer;transition:all var(--transition-medium);position:relative;overflow:hidden}.option-btn:hover:not(:disabled){background:var(--color-surface-hover);transform:translateY(-2px)}.option-btn.selected{border-color:var(--color-accent);background:rgba(var(--color-accent-rgb),.1)}.option-btn.correct{border-color:#4CAF50;background:rgba(76,175,80,.1)}.option-btn.incorrect{border-color:#F44336;background:rgba(244,67,54,.1)}.option-btn:disabled{cursor:default}.feedback{padding:var(--spacing-md);border-radius:var(--border-radius-medium);font-weight:500;text-align:center;animation:fadeIn .3s ease-in-out}.correct-feedback{background:rgba(76,175,80,.1);color:#4CAF50;border:1px solid rgba(76,175,80,.3)}.incorrect-feedback{background:rgba(244,67,54,.1);color:#F44336;border:1px solid rgba(244,67,54,.3)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.next-btn,.restart-btn,.submit-btn{background:var(--gradient-accent);color:white;border:none;border-radius:var(--border-radius-medium);padding:var(--spacing-md) var(--spacing-lg);font-size:var(--font-size-md);font-weight:600;cursor:pointer;transition:all var(--transition-medium);margin-top:var(--spacing-md);align-self:center}.next-btn:hover:not(:disabled),.restart-btn:hover,.submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-medium)}.next-btn:disabled,.submit-btn:disabled{background:var(--color-surface);color:var(--color-text-secondary);cursor:not-allowed}.quiz-results{text-align:center;padding:var(--spacing-xl) 0;animation:fadeIn .5s ease-in-out}.quiz-results h2{font-size:var(--font-size-xl);margin-bottom:var(--spacing-md);background:linear-gradient(90deg,var(--color-accent-light),var(--color-secondary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.quiz-results p{font-size:var(--font-size-lg);margin-bottom:var(--spacing-md)}.restart-btn{margin-top:var(--spacing-lg)}@media (max-width:768px){.quiz-header{flex-direction:column;align-items:flex-start;gap:var(--spacing-md)}.quiz-status{width:100%;justify-content:space-between}}@media (max-width:480px){.enhanced-quiz-box{padding:var(--spacing-md)}.question h3{font-size:var(--font-size-md)}.option-btn{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-size-sm)}}