*{margin:0;padding:0;box-sizing:border-box}body,html{max-width:100vw;overflow-x:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}body{background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;align-items:center;justify-content:center}.container{width:100%;max-width:480px;padding:2rem}.auth-card{background:#fff;border-radius:16px;padding:3rem 2rem;box-shadow:0 20px 60px rgba(0,0,0,.3);text-align:center}.logo{object-fit:cover}.icon-emoji,.logo{width:80px;height:80px;margin:0 auto 1.5rem;border-radius:20px}.icon-emoji{background:linear-gradient(135deg,rgba(102,126,234,.1),rgba(118,75,162,.1));display:flex;align-items:center;justify-content:center;font-size:3rem;line-height:1}.app-name{font-size:1.75rem;font-weight:700;color:#1a202c;margin-bottom:.5rem}.app-description{font-size:.95rem;color:#718096;margin-bottom:2rem;line-height:1.5}.google-signin-button{margin:2rem auto 0;display:flex;justify-content:center}.error{background:#fed7d7;color:#c53030;padding:.75rem 1rem;border-radius:8px;margin-bottom:1.5rem;font-size:.875rem}.loading{display:flex;flex-direction:column;align-items:center;gap:1rem}.spinner{width:40px;height:40px;border:3px solid #e2e8f0;border-top-color:#667eea;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.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}}