*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;min-height:100vh;background:linear-gradient(135deg,#13111c,#1a1625,#13111c);color:#fff;display:flex;justify-content:center;align-items:center;padding:20px;position:relative;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 50% 50%,rgba(139,92,246,.1),transparent 60%);pointer-events:none}.container{width:100%;max-width:450px;position:relative;z-index:1}.auth-card{background:#1e1b27d9;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid rgba(124,58,237,.2);border-radius:25px;padding:35px;box-shadow:0 15px 40px #0000004d;transition:all .5s cubic-bezier(.4,0,.2,1);position:relative}.auth-card:before{content:"";position:absolute;top:-1px;left:-1px;right:-1px;bottom:-1px;background:linear-gradient(45deg,rgba(124,58,237,.1),transparent,rgba(124,58,237,.1));border-radius:25px;z-index:-1;transition:all .5s ease}.tabs{display:flex;gap:10px;margin-bottom:30px}.tab-btn{flex:1;padding:12px;background:#7c3aed1a;border:1px solid rgba(124,58,237,.2);border-radius:12px;color:#fff;font-size:1rem;cursor:pointer;transition:all .3s ease}.tab-btn.active{background:#7c3aed4d;border-color:#7c3aed80}.auth-form{display:none}.auth-form.active{display:block;animation:fadeIn .5s ease}.auth-form h2{font-size:2rem;margin-bottom:25px;background:linear-gradient(45deg,#c4b5fd,#8b5cf6);-webkit-background-clip:text;background-clip:text;color:transparent;text-align:center}.form-group{position:relative;margin-bottom:25px;min-height:52px}.form-group i{position:absolute;top:15px;width:45px;text-align:center;color:#8b5cf6;font-size:1.1rem;z-index:1;pointer-events:none}.form-group i:first-child{left:0}.form-group .toggle-password{right:0;left:auto;cursor:pointer;pointer-events:auto}.form-group input{width:100%;padding:15px 45px;background:#7c3aed1a;border:1px solid rgba(124,58,237,.2);border-radius:12px;color:#fff;font-size:1rem;transition:all .3s ease;position:relative}.form-group input:focus{outline:none;border-color:#7c3aed80;background:#7c3aed26}.form-options{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;font-size:.9rem}.form-options label{display:flex;align-items:center;gap:8px;cursor:pointer}.form-options input[type=checkbox]{accent-color:#8b5cf6}.forgot-password{color:#8b5cf6;text-decoration:none;transition:color .3s ease}.forgot-password:hover{color:#c4b5fd}.auth-btn{width:100%;padding:15px;background:linear-gradient(45deg,#7c3aed,#8b5cf6);border:none;border-radius:12px;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;position:relative}.auth-btn:hover{transform:translateY(-2px);box-shadow:0 5px 15px #7c3aed66}.auth-btn.loading{color:transparent;pointer-events:none}.auth-btn.loading:after{content:"";position:absolute;width:20px;height:20px;top:50%;left:50%;transform:translate(-50%,-50%);border:2px solid #ffffff;border-radius:50%;border-top-color:transparent;animation:spin .8s linear infinite}.loading-overlay{position:absolute;top:0;left:0;right:0;bottom:0;background:#1e1b27e6;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;justify-content:center;align-items:center;border-radius:25px;opacity:0;visibility:hidden;transition:all .3s ease;z-index:10}.loading-overlay.active{opacity:1;visibility:visible}.loading-spinner{width:40px;height:40px;border:3px solid rgba(124,58,237,.3);border-radius:50%;border-top-color:#8b5cf6;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.password-strength{margin-bottom:20px}.strength-bar{height:4px;background:#ffffff1a;border-radius:2px;overflow:hidden;margin-bottom:5px}.strength-progress{height:100%;width:0;background:#ef4444;transition:all .3s ease}.strength-progress.weak{width:33.33%;background:#ef4444}.strength-progress.medium{width:66.66%;background:#f59e0b}.strength-progress.strong{width:100%;background:#10b981}.strength-text{font-size:.8rem;color:#c4b5fd}.error-message{color:#f44;font-size:.9em;position:absolute;bottom:-20px;left:0;text-align:left;pointer-events:none;animation:fadeIn .3s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 480px){.auth-card{padding:25px}.auth-form h2{font-size:1.8rem}.form-group input{padding:12px 40px}}