body,html{margin:0;padding:0;background:var(--backgroundColor,#fff)}
#app{visibility:hidden}
#loading-overlay{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:var(--backgroundColor,#fff);z-index:9999}
.spinner{width:1.5rem;height:1.5rem;border:3px solid #ccc;border-top-color:var(--primaryColor,#999999);border-radius:50%;animation:spin 0.8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}
}