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infinite;background:linear-gradient(90deg,#ff6b6b,#ff5252)}@keyframes warningPulse{0%,to{opacity:.8}50%{opacity:1}}@keyframes criticalPulse{0%,to{opacity:.6}50%{opacity:1}}.power-ups{display:flex;gap:10px}.power-up{background:linear-gradient(135deg,#667eea,#764ba2);border:2px solid #ffffff4d;border-radius:15px;color:#fff;cursor:pointer;font-size:1rem;font-weight:700;min-width:60px;padding:10px 15px;transition:all .3s ease}.power-up:hover:not(.disabled){box-shadow:0 10px 20px #667eea66;transform:translateY(-2px) scale(1.05)}.power-up.disabled{cursor:not-allowed;filter:grayscale(100%);opacity:.3}.question-container{padding:40px 20px;position:relative;text-align:center;z-index:1}.question-text{-webkit-text-fill-color:#0000;background:linear-gradient(45deg,#fff,#f0f0f0);-webkit-background-clip:text;background-clip:text;font-size:2.5rem;font-weight:700;margin:0 auto 20px;max-width:800px;text-shadow:0 0 20px #ffffff4d}.combo-indicator{animation:comboGlow 1s infinite;background:linear-gradient(135deg,#ff6b6b,#ff8e8e);border-radius:25px;display:inline-block;font-weight:700;margin-top:10px;padding:10px 20px}@keyframes comboGlow{0%,to{box-shadow:0 0 20px #ff6b6b80}50%{box-shadow:0 0 30px #ff6b6bcc}}.combo-text{font-size:1.2rem;letter-spacing:2px;text-transform:uppercase}.battle-arena{align-items:center;display:flex;gap:60px;justify-content:center;margin:0 auto;max-width:1400px;padding:40px 20px;position:relative;z-index:1}.vs-indicator{-webkit-text-fill-color:#0000;animation:vsGlow 2s infinite;background:linear-gradient(45deg,#ff6b6b,#4ecdc4);-webkit-background-clip:text;background-clip:text;font-size:4rem;font-weight:700;position:relative;text-shadow:0 0 30px #ffffff80;z-index:2}@keyframes vsGlow{0%,to{filter:brightness(1);transform:scale(1)}50%{filter:brightness(1.3);transform:scale(1.1)}}.tokens-container{align-items:center;display:flex;gap:60px}.token-card{-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);background:#ffffff0d;border:2px solid #fff3;border-radius:25px;cursor:pointer;overflow:hidden;padding:30px;position:relative;transition:all .3s ease;width:350px}.token-card:before{background:linear-gradient(135deg,#0000,#ffffff1a,#0000);bottom:0;content:"";left:0;opacity:0;position:absolute;right:0;top:0;transition:opacity .3s ease}.token-card:hover:before{opacity:1}.token-card:hover{border-color:#fff6;box-shadow:0 20px 50px #0000004d,0 0 30px #fff3;transform:translateY(-10px) scale(1.02)}.token-card.battle-animation{animation:battleEntry 1s ease}@keyframes battleEntry{0%{opacity:0;transform:translateX(-100px) rotateY(-90deg)}to{opacity:1;transform:translateX(0) rotateY(0)}}.token-card.selected{border-color:#fd0;box-shadow:0 0 40px #fd06,0 20px 50px #0000004d;transform:translateY(-5px) scale(1.05)}.token-card.correct{animation:correctPulse .6s ease;background:#4ecdc41a;border-color:#4ecdc4}.token-card.incorrect{animation:incorrectShake .6s ease;background:#ff6b6b1a;border-color:#ff6b6b}@keyframes correctPulse{0%,to{transform:translateY(-5px) scale(1.05)}50%{transform:translateY(-5px) scale(1.1)}}@keyframes incorrectShake{0%,to{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}.token-logo{align-items:center;border:3px solid #ffffff4d;border-radius:50%;box-shadow:0 10px 30px #0000004d;color:#fff;display:flex;font-size:2.5rem;font-weight:700;height:80px;justify-content:center;margin:0 auto 20px;width:80px}.token-info{margin-bottom:25px;text-align:center}.token-info h3{color:#fff;font-size:1.8rem;font-weight:700;margin-bottom:5px}.token-symbol{color:#b0b0b0;font-size:1.2rem;font-weight:700;margin-bottom:10px}.token-description{color:#888;font-size:1rem;font-style:italic}.token-stats{display:flex;gap:15px;justify-content:space-between}.stat{align-items:center;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:10px;display:flex;flex:1 1;flex-direction:column;padding:10px}.stat-label{color:#888;font-size:.8rem;letter-spacing:1px;margin-bottom:5px;text-transform:uppercase}.stat-value{color:#fd0;font-size:1.1rem;font-weight:700}.selection-indicator{align-items:center;animation:selectionPop .3s ease;background:#ffffffe6;border-radius:50%;color:#333;display:flex;font-size:1.5rem;font-weight:700;height:40px;justify-content:center;position:absolute;right:15px;top:15px;width:40px}@keyframes selectionPop{0%{transform:scale(0)}80%{transform:scale(1.2)}to{transform:scale(1)}}.result-banner{animation:resultSlide .5s ease;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:2px solid;border-radius:20px;left:50%;max-width:500px;padding:30px 60px;position:fixed;text-align:center;top:50%;transform:translate(-50%,-50%);z-index:1000}.result-banner.correct{background:#4ecdc4e6;border-color:#4ecdc4;color:#fff}.result-banner.incorrect{background:#ff6b6be6;border-color:#ff6b6b;color:#fff}@keyframes resultSlide{0%{opacity:0;transform:translate(-50%,-50%) scale(.5)}to{opacity:1;transform:translate(-50%,-50%) scale(1)}}.result-text{font-size:2rem;font-weight:700;letter-spacing:2px;margin-bottom:10px;text-transform:uppercase}.result-details{font-size:1.2rem;opacity:.9}.game-over{align-items:center;display:flex;flex-direction:column;justify-content:center;min-height:100vh;padding:20px;position:relative;text-align:center;z-index:1}.game-over-title{-webkit-text-fill-color:#0000;animation:gradientShift 3s ease-in-out infinite;background:linear-gradient(45deg,#fd0,#ff6b6b,#4ecdc4);-webkit-background-clip:text;background-clip:text;background-size:300% 300%;font-size:4rem;font-weight:700;margin-bottom:40px;text-shadow:0 0 30px #ffffff4d}.final-stats{-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);background:#ffffff0d;border:2px solid #fff3;border-radius:25px;margin-bottom:40px;max-width:600px;padding:40px}.rank-badge{background:linear-gradient(135deg,#667eea,#764ba2);border:2px solid #ffffff4d;border-radius:20px;margin-bottom:30px;padding:20px}.rank-badge h2{color:#fff;font-size:2rem;margin:0;text-shadow:0 0 20px #ffffff80}.stats-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.final-stat{align-items:center;background:#ffffff0d;border:1px solid #fff3;border-radius:15px;display:flex;flex-direction:column;padding:20px}.final-stat .stat-label{color:#b0b0b0;font-size:.9rem;letter-spacing:1px;margin-bottom:10px;text-transform:uppercase}.final-stat .stat-value{color:#fd0;font-size:2rem;font-weight:700}.game-over-actions{display:flex;flex-wrap:wrap;gap:20px;justify-content:center}.play-again-button{align-items:center;background:linear-gradient(135deg,#4ecdc4,#44a08d);border:none;border-radius:50px;box-shadow:0 10px 30px #4ecdc466;color:#fff;cursor:pointer;display:flex;font-size:1.3rem;font-weight:700;gap:15px;letter-spacing:2px;padding:20px 50px;text-transform:uppercase;transition:all .3s ease}.play-again-button:hover{box-shadow:0 15px 40px #4ecdc499;transform:translateY(-3px) scale(1.05)}.menu-button{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff1a;border:2px solid #ffffff4d;border-radius:50px;color:#fff;cursor:pointer;font-size:1.1rem;padding:15px 40px;transition:all .3s ease}.menu-button:hover{background:#fff3;transform:translateY(-2px)}@media (max-width:1200px){.battle-arena{flex-direction:column;gap:40px}.tokens-container{flex-direction:column;gap:30px}.vs-indicator{font-size:3rem;order:1}}@media (max-width:768px){.game-title{font-size:2.5rem}.title-icon{font-size:2rem;margin:0 10px}.question-text{font-size:1.8rem}.token-card{max-width:350px;padding:20px;width:100%}.game-header{flex-direction:column;gap:15px}.game-stats,.power-ups{justify-content:center}.battle-arena{gap:20px;padding:20px 10px}.menu-features{grid-template-columns:1fr}.game-over-actions{align-items:center;flex-direction:column}.menu-button,.play-again-button{justify-content:center;max-width:300px;width:100%}}@media (max-width:480px){.game-title{font-size:2rem}.question-text{font-size:1.4rem}.token-card{padding:15px}.token-logo{font-size:2rem;height:60px;width:60px}.token-info h3{font-size:1.4rem}.stat-value{font-size:1rem}.final-stat .stat-value{font-size:1.5rem}}@keyframes 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