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32px;border-radius:50px;cursor:pointer;font-size:16px;font-weight:600;transition:all .3s cubic-bezier(.4,0,.2,1);min-width:120px;box-shadow:0 8px 25px #667eea4d,inset 0 1px #fff3;border:1px solid rgba(255,255,255,.1);position:relative;overflow:hidden;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.btn:after{content:"✨";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);opacity:0;font-size:20px;pointer-events:none;animation:sparkle 1.5s ease-in-out infinite;animation-delay:.5s}.btn:hover:before{left:100%}.btn:hover{background:linear-gradient(135deg,#764ba2 0%,#667eea 100%);transform:translateY(-3px) scale(1.08);box-shadow:0 15px 35px #667eea99,inset 0 1px #fff6,0 0 25px #667eea66}.btn:hover:after{animation:sparkle .8s ease-in-out infinite}.btn-floating{animation:pulse 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