.auth-modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.8);display:flex;justify-content:center;align-items:center;z-index:10001;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px)}.auth-modal{background:linear-gradient(145deg,#1a1a1a,#101010);border-radius:20px;width:90%;max-width:420px;max-height:95vh;overflow-y:auto;border:1px solid hsla(0,0%,100%,.1);box-shadow:0 15px 45px -10px rgba(0,0,0,.7);animation:modalSlideIn .4s cubic-bezier(.25,1,.5,1)}@keyframes modalSlideIn{0%{opacity:0;transform:translateY(-20px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.auth-modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 30px;border-bottom:1px solid hsla(0,0%,100%,.1)}.auth-modal-header h2{color:#fff;font-size:22px;font-weight:700;margin:0;background:-webkit-linear-gradient(45deg,#00ff8c,#00d4aa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.auth-modal-close{background:none;border:none;color:hsla(0,0%,100%,.7);font-size:20px;cursor:pointer;padding:8px;border-radius:50%;transition:all .3s ease}.auth-modal-close:hover{color:#00ff8c;background:rgba(0,255,140,.1)}.auth-modal-body{padding:30px}.auth-error{background:rgba(255,59,48,.1);border:1px solid rgba(255,59,48,.3);color:#ff3b30;border-radius:8px}.auth-error,.auth-success{padding:12px 16px;margin-bottom:20px;display:flex;align-items:center;gap:8px;font-size:14px}.auth-success{background:rgba(0,255,140,.1);border:1px solid rgba(0,255,140,.3);color:#00ff8c;border-radius:8px}.auth-form{display:flex;flex-direction:column;gap:20px}.form-group{position:relative;margin-bottom:30px}.form-group input{background:rgba(0,0,0,.3);border:1px solid hsla(0,0%,100%,.1);border-radius:12px;padding:16px;color:#fff;font-size:16px;width:100%;transition:all .3s ease;box-sizing:border-box}.form-group label{position:absolute;top:16px;left:16px;color:hsla(0,0%,100%,.5);pointer-events:none;transition:all .3s ease;display:flex;align-items:center;gap:8px}.form-group label .fas{transition:color .3s ease}.form-group input:focus+label,.form-group input:not(:placeholder-shown)+label{top:-10px;left:12px;font-size:12px;color:#00ff8c;background:#151515;padding:0 4px}.form-group input:focus+label .fas{color:#00ff8c}.form-group input:focus{outline:none;border-color:#00ff8c;background:rgba(0,0,0,.4)}.form-group input::placeholder{color:transparent}.auth-submit-btn{background:linear-gradient(135deg,#00ff8c,#00d4aa);border:none;border-radius:12px;padding:16px 24px;color:#000;font-size:16px;font-weight:700;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;width:100%}.auth-submit-btn:hover:not(:disabled){background:linear-gradient(135deg,#00d4aa,#00ff8c);transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,255,140,.3)}.auth-submit-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.loading-spinner{width:20px;height:20px;border:2px solid hsla(0,0%,100%,.3);border-top-color:#fff}.auth-divider{display:flex;align-items:center;margin:24px 0;text-align:center}.auth-divider:after,.auth-divider:before{content:"";flex:1 1;height:1px;background:hsla(0,0%,100%,.2)}.auth-divider span{padding:0 16px;color:hsla(0,0%,100%,.6);font-size:14px}.google-login-btn{width:100%;background:transparent;border:1px solid hsla(0,0%,100%,.2);border-radius:12px;padding:14px 16px;color:hsla(0,0%,100%,.8);font-size:16px;font-weight:500;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:12px}.google-login-btn:hover{background:hsla(0,0%,100%,.1);border-color:hsla(0,0%,100%,.3);transform:translateY(-1px)}.google-login-btn i{font-size:18px;color:#4285f4}.auth-switch{text-align:center;margin-top:24px;padding-top:20px;border-top:1px solid hsla(0,0%,100%,.1)}.auth-switch p{color:hsla(0,0%,100%,.7);font-size:14px;margin:0}.auth-switch-btn{background:none;border:none;color:#00ff8c;font-size:14px;font-weight:600;cursor:pointer;text-decoration:underline;transition:all .3s ease}.auth-switch-btn:hover{color:#00d4aa}.auth-mode-switch{text-align:center;margin-top:16px;color:hsla(0,0%,100%,.7);font-size:14px}.auth-mode-switch button{background:none;border:none;color:#00ff8c;font-size:14px;font-weight:600;cursor:pointer;text-decoration:underline;transition:all .3s ease;padding:0}.auth-mode-switch button:hover{color:#00d4aa}.login-btn{background:linear-gradient(135deg,#00ff8c,#00d4aa);border:none;border-radius:12px;padding:16px 24px;color:#000;font-size:16px;font-weight:700;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;width:100%}.login-btn:hover:not(:disabled){background:linear-gradient(135deg,#00d4aa,#00ff8c);transform:translateY(-2px);box-shadow:0 8px 25px rgba(0,255,140,.3)}.login-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.auth-toggle{text-align:center;margin-top:1rem}.auth-toggle button{background:none;border:none;color:#00ff8c;cursor:pointer;text-decoration:underline}@media (max-width:480px){.auth-modal{width:95%;margin:20px;max-height:calc(100vh - 40px)}.auth-modal-header{padding:20px 20px 0}.auth-modal-body{padding:0 20px 20px}.auth-modal-header h2{font-size:20px}.form-group input{font-size:16px}}.lang-en .auth-modal .zh,.lang-zh .auth-modal .en{display:none}.lang-en .auth-modal .en,.lang-zh .auth-modal .zh{display:inline}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.8);display:flex;justify-content:center;align-items:center;z-index:10002}.loading-spinner{width:40px;height:40px;border-radius:50%;border:4px solid hsla(0,0%,100%,.2);border-top-color:#00ff8c;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(1turn)}}