*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#f5f5f5;color:#1a1a1a;min-height:100vh}.screen{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:1rem}.card{background:#fff;border-radius:12px;box-shadow:0 2px 12px #00000014;padding:2.5rem 2rem;width:100%;max-width:400px;display:flex;flex-direction:column;align-items:center;gap:1rem;text-align:center}.card-title{font-size:1.5rem;font-weight:600;color:#111}.card-subtitle{font-size:.95rem;color:#555;line-height:1.5}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.7rem 1.5rem;border:none;border-radius:8px;font-size:.95rem;font-weight:500;cursor:pointer;text-decoration:none;transition:background .15s ease;width:100%}.btn-primary{background:#1a73e8;color:#fff}.btn-primary:hover{background:#1557b0}.link-secondary{font-size:.85rem;color:#666;text-decoration:underline;cursor:pointer}.link-secondary:hover{color:#333}@keyframes spin{to{transform:rotate(360deg)}}.spinner{width:36px;height:36px;border:3px solid #e0e0e0;border-top-color:#1a73e8;border-radius:50%;animation:spin .8s linear infinite}