@media (max-width: 768px){.nav-links-desktop{display:none!important}.mobile-menu-button{display:block!important}.nav-links-mobile{display:flex!important}.nav-links-mobile.hidden{display:none!important}}body{margin:0;font-family:Segoe UI,Arial,sans-serif;background:#f6f8fa;color:#222}.app-container{max-width:400px;margin:40px auto;background:#fff;border-radius:12px;box-shadow:0 2px 16px #00000012;padding:32px 24px}h1,h2{font-weight:600;margin-bottom:16px}form{display:flex;flex-direction:column;gap:16px}input,button{padding:10px 12px;border-radius:6px;border:1px solid #d1d5db;font-size:1rem}input:focus{outline:2px solid #2563eb;border-color:#2563eb}button{background:#2563eb;color:#fff;border:none;cursor:pointer;font-weight:500;transition:background .2s}button:disabled{background:#a5b4fc;cursor:not-allowed}.error-message{color:#d32f2f;background:#fdecea;padding:8px 12px;border-radius:4px;font-size:.95rem;margin-bottom:8px}.progress-bar{display:flex;justify-content:center;align-items:center;margin:16px 0}