.loader {
  position: fixed;
  top: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.3);
  min-width: 100vw;
  min-height: 100vh;
  z-index: 99;
  display: none;
  align-items: center;
  justify-content: center;
}

.loader.active {
  display: flex;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255, 255, 255, 0.8);
  border-top: 5px solid #1d4ed8;
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
}

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