.authorization-block > * {
  visibility: hidden;
}

/* Full-screen overlay with loader */
.authorization-block::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  z-index: 9998;
}

/* Loader circle */
.authorization-block::after {
  content: "";
  position: fixed;
  top: 50%;
  left: 50%;
  width: 50px;
  height: 50px;
  margin-top: -25px;
  margin-left: -25px;
  border: 5px solid #ccc;
  border-top-color: #b04b34;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 9999;
}

/* Spin animation */
@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}