@keyframes neonFadeIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}.user-profile-modal-backdrop{display:none;position:fixed;inset:0;background-color:rgba(0,0,0,.85);justify-content:center;align-items:center;z-index:10000}.user-profile-modal{background:linear-gradient(135deg,#111,#1a1a1a);border:2px solid #f0f;box-shadow:0 0 15px #f0f,0 0 30px #0ff,0 0 40px #ff0;padding:30px;border-radius:14px;animation:neonFadeIn .5s ease-in-out;max-width:500px;color:#fff;position:relative}.user-profile-header{font-family:'Courier New',Courier,monospace;font-size:1.6rem;text-align:center;background:linear-gradient(90deg,red,orange,#ff0,green,#00f,indigo,violet);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:20px}.close-user-profile-button{position:absolute;top:12px;right:20px;font-size:2rem;color:#f0f;text-shadow:0 0 8px #f0f;cursor:pointer}.update-username-submit{margin-top:15px;width:100%;padding:12px;background:linear-gradient(to right,#f0f,#0ff,#ff0);border:none;color:#000;font-weight:700;font-size:1.1rem;cursor:pointer;border-radius:8px;box-shadow:0 0 12px #ff0}.new-username-label{font-family:'Courier New',Courier,monospace;font-size:1.3rem;text-align:center;background:linear-gradient(90deg,#f0f,#0ff,#ff0);-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:10px;display:block;text-shadow:0 0 5px #f0f}