/* Loading spinner styles */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #111927;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-circle {
  width: 50px;
  height: 50px;
  border: 5px solid rgba(255, 255, 255, 0.1);
  border-top: 5px solid #4070f4;
  border-radius: 50%;
  animation: spin 1s linear infinite, pulseColor 3s ease-in-out infinite;
}

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

@keyframes pulseColor {
  0%, 100% { border-top-color: #4070f4; }
  33% { border-top-color: var(--orange-yellow-crayola); }
  66% { border-top-color: #f44070; }
}