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0 0 4px #ffffff80,0 12px 32px #ff6b3566}50%{box-shadow:0 0 0 6px #ffffffb3,0 16px 40px #ff6b3599}}@keyframes matchSuccess{0%{transform:scale(1)}50%{transform:scale(1.15) rotate(3deg)}to{transform:scale(1) rotate(0)}}@keyframes checkmarkPop{0%{transform:translate(-50%,-50%) scale(0);opacity:0}50%{transform:translate(-50%,-50%) scale(1.2)}to{transform:translate(-50%,-50%) scale(1);opacity:1}}.progress-bar-container{background:#fff3;border-radius:100px;overflow:hidden;height:12px;position:relative}.progress-bar-fill{height:100%;background:var(--gradient-orange);border-radius:100px;transition:width .5s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.progress-bar-fill:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:shimmer 2s infinite}@keyframes shimmer{0%{transform:translate(-100%)}to{transform:translate(100%)}}.level-progress{background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:100px;overflow:hidden;height:14px;border:1px solid rgba(255,255,255,.2)}.level-progress-bar{background:var(--gradient-glow);height:100%;transition:width .5s cubic-bezier(.4,0,.2,1);box-shadow:0 0 20px #ffd70099;position:relative}.level-progress-bar:after{content:"";position:absolute;top:0;right:0;width:20px;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4));filter:blur(4px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleUp{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.animate-fade-in{animation:fadeIn .4s ease}.animate-slide-up{animation:slideUp .5s cubic-bezier(.4,0,.2,1)}.animate-scale-up{animation:scaleUp .4s cubic-bezier(.4,0,.2,1)}.animate-float{animation:float 3s ease-in-out infinite}.animate-pulse{animation:pulse 2s ease-in-out infinite}.spinner{border:4px solid rgba(255,255,255,.3);border-left-color:var(--primary-orange);border-radius:50%;width:48px;height:48px;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes xpPop{0%{transform:scale(0) translateY(0);opacity:0}50%{transform:scale(1.3) translateY(-10px)}to{transform:scale(1) translateY(0);opacity:1}}.xp-popup{animation:xpPop .6s cubic-bezier(.4,0,.2,1) forwards;background:var(--gradient-glow);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-weight:800;text-shadow:0 4px 20px rgba(255,215,0,.5)}@keyframes correctBounce{0%,to{transform:scale(1)}25%{transform:scale(1.1)}50%{transform:scale(.95)}75%{transform:scale(1.05)}}@keyframes wrongShake{0%,to{transform:translate(0)}10%,30%,50%,70%,90%{transform:translate(-8px)}20%,40%,60%,80%{transform:translate(8px)}}@keyframes correctGlow{0%{box-shadow:0 0 #26de81b3}50%{box-shadow:0 0 0 20px #26de8100}to{box-shadow:0 0 #26de8100}}.animate-correct{animation:correctBounce .6s ease,correctGlow .6s ease}.animate-wrong{animation:wrongShake .5s ease}.modal-backdrop{-webkit-backdrop-filter:blur(12px) saturate(150%);backdrop-filter:blur(12px) saturate(150%);background:#0000004d}.modal-content{background:var(--glass-bg-strong);backdrop-filter:blur(40px) saturate(200%);-webkit-backdrop-filter:blur(40px) saturate(200%);border:2px solid var(--glass-border);border-radius:32px;box-shadow:0 20px 60px #0000004d}.dark-mode{background:linear-gradient(135deg,#1a1a2e,#16213e,#0f3460)!important}.dark-mode:before{background:radial-gradient(circle at 20% 50%,rgba(95,39,205,.2) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(165,94,234,.2) 0%,transparent 50%)}.dark-mode 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transparent;background-image:linear-gradient(#fff,#fff),var(--gradient-warm);background-origin:border-box;background-clip:padding-box,border-box}.confetti-container{position:fixed;top:0;left:0;width:100%;height:100%;pointer-events:none;z-index:9999;overflow:hidden}.confetti{position:absolute;width:10px;height:10px;top:-10px;opacity:0;animation:confetti-fall 2s ease-out forwards;border-radius:2px}@keyframes confetti-fall{0%{top:-10%;opacity:1;transform:translate(0) rotate(0)}to{top:100%;opacity:0;transform:translate(calc(var(--random-x, 50px) - 25px)) rotate(720deg)}}.confetti:nth-child(2n){animation-duration:1.8s;width:8px;height:8px}.confetti:nth-child(3n){animation-duration:2.2s;width:12px;height:6px}.confetti:nth-child(4n){animation-duration:1.5s;width:6px;height:12px}.confetti:nth-child(5n){animation-duration:2.5s}.flashcard-container{perspective:1000px;position:relative}.flashcard-inner{position:relative;width:100%;height:100%;transition:transform .6s;transform-style:preserve-3d}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:16px;padding:clamp(20px,5vw,32px);box-shadow:0 8px 32px #ff6b3540}.flashcard-front{background:linear-gradient(135deg,#ff6b35f2,#ff8c42f2);color:#fff;border:2px solid rgba(255,255,255,.3)}.flashcard-back{background:linear-gradient(135deg,#5f27cdf2,#a55eeaf2);color:#fff;transform:rotateY(180deg);border:2px solid rgba(255,255,255,.3)}.flashcard-front p,.flashcard-back p{text-shadow:0 2px 8px rgba(0,0,0,.2);margin:0}.flashcard-container:hover .flashcard-inner{box-shadow:0 12px 40px #ff6b3559}.last\:border-0:last-child{border-width:0px}.hover\:scale-105:hover{--tw-scale-x: 1.05;--tw-scale-y: 1.05;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.hover\:scale-110:hover{--tw-scale-x: 1.1;--tw-scale-y: 1.1;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.hover\:scale-125:hover{--tw-scale-x: 1.25;--tw-scale-y: 1.25;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.hover\:bg-blue-700:hover{--tw-bg-opacity: 1;background-color:rgb(29 78 216 / var(--tw-bg-opacity, 1))}.hover\:text-blue-800:hover{--tw-text-opacity: 1;color:rgb(30 64 175 / var(--tw-text-opacity, 1))}.active\:scale-110:active{--tw-scale-x: 1.1;--tw-scale-y: 1.1;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skew(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}