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h2{background:linear-gradient(135deg,#4f46e5,#10b981);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}:root[data-theme=light] .auth-description{color:#64748b}:root[data-theme=light] .auth-modal .form-group label{color:#1e293b}:root[data-theme=light] .auth-modal .form-group input{background:#f8fafc;border:1.5px solid #cbd5e1;color:#1e293b}:root[data-theme=light] .auth-modal .form-group input:focus{border-color:#4f46e5;background:#fff;box-shadow:0 0 0 3px #4f46e51a}:root[data-theme=light] .auth-modal .form-group small{color:#64748b}:root[data-theme=light] .error-message{background:#ef444414;border:1px solid rgba(239,68,68,.25);color:#dc2626}:root[data-theme=light] .submit-button{background:linear-gradient(135deg,#4f46e5,#10b981);box-shadow:0 4px 12px #4f46e540}:root[data-theme=light] .submit-button:hover:not(:disabled){box-shadow:0 8px 20px #4f46e559}:root[data-theme=light] .auth-switch{color:#64748b}:root[data-theme=light] 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h1{margin:0;font-size:1.2rem;background:linear-gradient(135deg,#646cff,#4ade80);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;color:transparent;white-space:nowrap}.header-title p{margin:2px 0 0;color:#ffffff80;font-size:.78rem}.header-right{display:flex;align-items:center;gap:10px;flex-shrink:0}.auth-buttons{display:flex;gap:8px}.login-button,.register-button,.logout-button{padding:7px 16px;border-radius:8px;font-size:.82rem;font-weight:500;cursor:pointer;transition:all .2s;border:none;white-space:nowrap}.login-button{background:transparent;border:1px solid rgba(100,108,255,.5);color:#818cf8}.login-button:hover{background:#646cff1a;border-color:#646cff}.register-button{background:linear-gradient(135deg,#646cff,#4ade80);color:#fff;border:none}.register-button:hover{transform:translateY(-1px);box-shadow:0 3px 10px #646cff59}.user-menu{display:flex;align-items:center;gap:10px}.user-info{display:flex;align-items:center;gap:8px;padding:5px 12px 5px 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