.quiz-container{background-color:#1e293b;color:#f1f5f9;padding:2rem;border-radius:1rem;box-shadow:0 4px 12px rgba(0,0,0,.2);font-family:sans-serif}.quiz-question{font-size:1.2rem;margin-bottom:1rem}.quiz-options{display:flex;flex-direction:column;gap:1rem}.option-btn{background-color:#334155;padding:.75rem 1rem;border:none;border-radius:.5rem;cursor:pointer;text-align:left;transition:background-color .3s ease}.option-btn:hover{background-color:#475569}.correct{background-color:#16a34a !important;color:#fff}.incorrect{background-color:#dc2626 !important;color:#fff}.quiz-explanation{background-color:#475569;margin-top:1rem;padding:1rem;border-radius:.5rem;font-size:.95rem}.next-btn,.restart-btn{margin-top:1.5rem;background-color:#0ea5e9;color:#fff;padding:.6rem 1.2rem;border:none;border-radius:.5rem;cursor:pointer}.next-btn:hover,.restart-btn:hover{background-color:#0284c7}