/* Static shell shown before the Vue bundle downloads/mounts — replaced
   automatically by app.mount('#app') once main.ts finishes. Keeps a slow
   connection from sitting on a pure-white tab. Kept as an external file
   (not an inline <style> tag) so the CSP's style-src can stay 'self' only,
   with no 'unsafe-inline'. */
#app-boot-shell {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f8f8fa;
}
#app-boot-shell .spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #ebf3ff;
  border-top-color: #1668f4;
  border-radius: 50%;
  animation: app-boot-spin 0.7s linear infinite;
}
@keyframes app-boot-spin {
  to {
    transform: rotate(360deg);
  }
}