*{box-sizing:border-box;margin:0;padding:0}html,body{max-width:100vw;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;overflow-x:hidden}body{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);justify-content:center;align-items:center;min-height:100vh;display:flex}.container{width:100%;max-width:480px;padding:2rem}.auth-card{text-align:center;background:#fff;border-radius:16px;padding:3rem 2rem;box-shadow:0 20px 60px #0000004d}.logo{object-fit:cover;border-radius:20px;width:80px;height:80px;margin:0 auto 1.5rem}.app-name{color:#1a202c;margin-bottom:.5rem;font-size:1.75rem;font-weight:700}.app-description{color:#718096;margin-bottom:2rem;font-size:.95rem;line-height:1.5}.google-signin-button{justify-content:center;margin:2rem auto 0;display:flex}.error{color:#c53030;background:#fed7d7;border-radius:8px;margin-bottom:1.5rem;padding:.75rem 1rem;font-size:.875rem}.loading{flex-direction:column;align-items:center;gap:1rem;display:flex}.spinner{border:3px solid #e2e8f0;border-top-color:#667eea;border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:#718096;font-size:.95rem}@media (max-width:480px){.container{padding:1rem}.auth-card{padding:2rem 1.5rem}.app-name{font-size:1.5rem}}