.username-modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.85);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease-out}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.username-modal{background:linear-gradient(135deg,#1a1f3a,#0f1228);border:2px solid rgba(255,255,255,.1);border-radius:20px;padding:40px;max-width:500px;width:90%;position:relative;animation:slideUp .3s ease-out;box-shadow:0 20px 60px rgba(0,0,0,.5)}@keyframes slideUp{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}.username-modal-close{position:absolute;top:20px;right:20px;background:rgba(255,255,255,.1);border:none;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;cursor:pointer;color:rgba(255,255,255,.7);transition:all .2s ease}.username-modal-close:hover{background:rgba(255,255,255,.2);color:white;transform:rotate(90deg)}.username-modal-header{text-align:center;margin-bottom:30px}.username-modal-icon{color:#ffd700;margin-bottom:15px;filter:drop-shadow(0 0 10px rgba(255,215,0,.5));animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}.username-modal-title{font-size:28px;font-weight:700;color:white;margin:0 0 10px;background:linear-gradient(135deg,#fff,#ffd700);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.username-modal-subtitle{font-size:16px;color:rgba(255,255,255,.7);margin:0}.username-modal-form{display:flex;flex-direction:column;gap:20px}.username-input-wrapper{position:relative;display:flex;align-items:center}.username-input-icon{position:absolute;left:15px;color:rgba(255,255,255,.5);pointer-events:none;z-index:1}.username-input{width:100%;padding:15px 50px;font-size:18px;background:rgba(255,255,255,.05);border:2px solid rgba(255,255,255,.1);border-radius:12px;color:white;transition:all .3s ease;font-family:inherit}.username-input:focus{outline:none;border-color:#4a9eff;background:rgba(255,255,255,.08);box-shadow:0 0 0 4px rgba(74,158,255,.1)}.username-input::placeholder{color:rgba(255,255,255,.3)}.username-input:disabled{opacity:.6;cursor:not-allowed}.username-input-error{border-color:#ff4444!important;box-shadow:0 0 0 4px rgba(255,68,68,.1)!important}.username-input-success{border-color:#44ff88!important}.username-input-spinner{position:absolute;right:15px;width:20px;height:20px;border:2px solid rgba(255,255,255,.2);border-top-color:#4a9eff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.username-input-check{position:absolute;right:15px;color:#44ff88}.username-error,.username-success{display:flex;align-items:center;gap:8px;padding:12px;border-radius:8px;font-size:14px;animation:slideDown .3s ease-out}@keyframes slideDown{0%{transform:translateY(-10px);opacity:0}to{transform:translateY(0);opacity:1}}.username-error{background:rgba(255,68,68,.1);border:1px solid rgba(255,68,68,.3);color:#ff4444}.username-success{background:rgba(68,255,136,.1);border:1px solid rgba(68,255,136,.3);color:#44ff88}.username-modal-actions{display:flex;gap:12px;margin-top:10px}.username-button{flex:1;padding:15px 25px;font-size:16px;font-weight:600;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;font-family:inherit;position:relative;overflow:hidden}.username-button:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:rgba(255,255,255,.2);transform:translate(-50%,-50%);transition:width .6s ease,height .6s ease}.username-button:active:before{width:300px;height:300px}.username-button-primary{background:linear-gradient(135deg,#4a9eff,#357abd);color:white;box-shadow:0 4px 15px rgba(74,158,255,.3)}.username-button-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px rgba(74,158,255,.4)}.username-button-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}.username-button-secondary{background:rgba(255,255,255,.1);color:white;border:2px solid rgba(255,255,255,.2)}.username-button-secondary:hover{background:rgba(255,255,255,.15);border-color:rgba(255,255,255,.3)}.username-modal-info{margin-top:20px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);text-align:center}.username-modal-info p{font-size:13px;color:rgba(255,255,255,.5);margin:5px 0}@media (max-width:600px){.username-modal{padding:30px 20px;width:95%}.username-modal-title{font-size:24px}.username-modal-subtitle{font-size:14px}.username-input{font-size:16px;padding:12px 45px}.username-modal-actions{flex-direction:column}.username-button{width:100%}}