.answer-btn{position:relative;transition:all .3s ease;transform-origin:center;overflow:hidden}.answer-btn.clicked{transform:scale(.95)}.answer-btn.correct{background-color:#4caf50!important;color:#fff!important;border-color:#2e7d32!important;box-shadow:0 0 15px #4caf50b3;transform:scale(1.05);font-weight:700}.answer-btn.incorrect{background-color:#f44336!important;color:#fff!important;border-color:#c62828!important;opacity:.8}.answer-btn.correct-highlighted{background-color:#4caf50!important;color:#fff!important;border-color:#2e7d32!important;box-shadow:0 0 20px #4caf50e6,0 0 30px #4caf5080;border:3px solid gold;transform:scale(1.08);font-weight:700;animation:correct-answer-glow 1.5s infinite alternate}@keyframes correct-answer-glow{0%{box-shadow:0 0 15px #4caf50b3,0 0 5px #ffd70080;border-color:gold}to{box-shadow:0 0 25px #4caf50e6,0 0 15px #ffd700cc;border-color:gold}}.answer-btn.pulse{animation:pulse 1.5s cubic-bezier(.4,0,.6,1) .2s}@keyframes pulse{0%{transform:scale(1);box-shadow:0 0 #4caf50b3}50%{transform:scale(1.1);box-shadow:0 0 10px 5px #4caf50b3}to{transform:scale(1.05);box-shadow:0 0 15px 2px #4caf50b3}}.answer-btn.shake{animation:shake .5s cubic-bezier(.36,.07,.19,.97) both}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-5px)}40%,80%{transform:translate(5px)}}.streak-counter{position:absolute;top:20px;right:20px;background-color:#ff9800cc;color:#fff;padding:8px 12px;border-radius:20px;font-weight:700;font-size:18px;z-index:100;box-shadow:0 2px 5px #0003;transition:all .3s ease}.streak-counter.streak-warm{background-color:#ff5722d9;font-size:20px}.streak-counter.streak-hot{background-color:#f44336e6;font-size:24px;animation:flame 2s infinite alternate}.streak-counter.streak-pulse{animation:counter-pulse .5s ease}@keyframes counter-pulse{0%{transform:scale(1)}50%{transform:scale(1.3)}to{transform:scale(1)}}@keyframes flame{0%{box-shadow:0 0 5px #f44336b3;text-shadow:0 0 3px rgba(255,255,255,.7)}to{box-shadow:0 0 15px #f44336e6,0 0 30px #ffc10780;text-shadow:0 0 10px rgba(255,255,255,.9)}}.hidden{display:none!important}.score-change{position:absolute;right:-20px;top:0;color:gold;font-weight:700;animation:score-up 1s ease-out forwards}@keyframes score-up{0%{opacity:0;transform:translateY(5px)}20%{opacity:1}80%{opacity:1}to{opacity:0;transform:translateY(-20px)}}#celebration-container{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none;overflow:hidden;z-index:50}.answer-btn:focus{outline:3px solid #2196F3;outline-offset:2px}.answer-btn[disabled]{cursor:default}.answer-btn.correct[disabled]{opacity:1}.answer-btn.incorrect[disabled]{opacity:.7}@media (forced-colors: active){.answer-btn.correct{border:3px solid CanvasText}.answer-btn.incorrect{border:3px dashed CanvasText}.answer-btn.correct-highlighted{border:4px solid CanvasText;outline:2px solid CanvasText;outline-offset:3px}}