.quiz-container{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;padding:20px;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.quiz-back-button,.quiz-back-button-inline{cursor:pointer;color:#667eea;background:#fff;border:none;border-radius:10px;padding:12px 25px;font-size:1rem;font-weight:700;transition:all .3s;box-shadow:0 4px 10px #0003}.quiz-back-button:hover,.quiz-back-button-inline:hover{transform:translateY(-2px);box-shadow:0 6px 15px #0000004d}.quiz-intro{text-align:center;color:#fff;max-width:600px;margin:60px auto 0;animation:.6s slideDown}.quiz-intro-icon{margin-bottom:10px;font-size:5rem}.quiz-intro h1{text-shadow:2px 2px 8px #0003;margin-bottom:10px;font-size:2.5rem}.quiz-intro p{opacity:.95;margin-bottom:30px;font-size:1.1rem}.quiz-start-button{color:#667eea;cursor:pointer;background:#fff;border:none;border-radius:50px;padding:16px 40px;font-size:1.2rem;font-weight:700;transition:all .3s;box-shadow:0 8px 25px #00000040}.quiz-start-button:hover{transform:translateY(-3px)scale(1.03);box-shadow:0 12px 30px #00000059}.quiz-empty{text-align:center;color:#fff;max-width:500px;margin:60px auto;font-size:1.2rem}.quiz-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:15px;max-width:700px;margin:0 auto 20px;display:flex}.quiz-progress{color:#fff;text-shadow:1px 1px 4px #0003;font-size:1.1rem;font-weight:700}.quiz-score-chip{color:#764ba2;background:#fff;border-radius:50px;padding:10px 20px;font-weight:700;box-shadow:0 4px 10px #0003}.quiz-card{background:#fff;border-radius:24px;max-width:700px;margin:0 auto;padding:40px;animation:.4s slideUp;box-shadow:0 15px 50px #0003}.quiz-category{color:#764ba2;background:#f0eefc;border-radius:50px;margin-bottom:15px;padding:6px 16px;font-size:.85rem;font-weight:600;display:inline-block}.quiz-question{color:#333;margin-bottom:30px;font-size:1.5rem;line-height:1.4}.quiz-options{grid-template-columns:1fr;gap:14px;margin-bottom:10px;display:grid}.quiz-options-truefalse{grid-template-columns:1fr 1fr}.quiz-option{color:#333;cursor:pointer;text-align:left;background:#f7f7fb;border:2px solid #e5e3f5;border-radius:14px;padding:16px 20px;font-size:1.05rem;font-weight:600;transition:all .2s}.quiz-options-truefalse .quiz-option{text-align:center}.quiz-option:hover:not(:disabled){background:#f0eefc;border-color:#764ba2;transform:translateY(-2px)}.quiz-option:disabled{cursor:default}.quiz-option.correct{color:#1a7a42;background:#e3f9ec;border-color:#34c777}.quiz-option.incorrect{color:#b6362f;background:#fdecec;border-color:#e2534d}.quiz-feedback{border-radius:14px;margin-top:25px;padding:20px;animation:.3s slideUp}.quiz-feedback.correct{background:#e3f9ec}.quiz-feedback.incorrect{background:#fdecec}.quiz-feedback-label{margin-bottom:8px;font-size:1.1rem;font-weight:700}.quiz-feedback.correct .quiz-feedback-label{color:#1a7a42}.quiz-feedback.incorrect .quiz-feedback-label{color:#b6362f}.quiz-explanation{color:#444;margin-bottom:18px;line-height:1.5}.quiz-next-button{color:#fff;cursor:pointer;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);border:none;border-radius:50px;padding:12px 30px;font-size:1rem;font-weight:700;transition:all .3s;box-shadow:0 6px 20px #764ba266}.quiz-next-button:hover{transform:translateY(-2px);box-shadow:0 8px 25px #764ba299}.quiz-score-card{text-align:center;background:#fff;border-radius:24px;max-width:500px;margin:60px auto 0;padding:50px 40px;animation:.5s slideUp;box-shadow:0 15px 50px #00000040}.quiz-score-icon{margin-bottom:10px;font-size:3.5rem}.quiz-final-score{color:#764ba2;font-size:3rem;font-weight:700}.quiz-score-percentage{color:#666;margin-bottom:15px;font-size:1.3rem}.quiz-score-message{color:#333;margin-bottom:30px;font-size:1.2rem}.quiz-final-actions{flex-direction:column;gap:12px;display:flex}@keyframes slideDown{0%{opacity:0;transform:translateY(-30px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@media (max-width:600px){.quiz-card{padding:25px}.quiz-question{font-size:1.25rem}.quiz-options-truefalse{grid-template-columns:1fr}.quiz-intro h1{font-size:2rem}}