.loading-container {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  height: 100dvh;
  background: #0a0a0a;
}
.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255,255,255,0.15);
  border-top-color: rgba(255,255,255,0.5);
  border-radius: 50%;
  animation: sp .8s linear infinite;
}
@keyframes sp { to { transform: rotate(360deg) } }