#page-loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: #0b132b;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition:
    opacity 0.5s ease,
    visibility 0.5s ease;
}

#page-loader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  position: relative;
  width: 80px;
  height: 80px;
}

.loader-spinner::before,
.loader-spinner::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 4px solid transparent;
}

.loader-spinner::before {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-top-color: #00ffff;
  border-bottom-color: #00ffff;
  box-shadow: 0 0 15px rgba(0, 255, 255, 0.5);
  animation: spin 1.5s linear infinite;
}

.loader-spinner::after {
  top: 15px;
  left: 15px;
  right: 15px;
  bottom: 15px;
  border-left-color: #0088ff;
  border-right-color: #0088ff;
  box-shadow: 0 0 10px rgba(0, 136, 255, 0.5);
  animation: spin-reverse 1s linear infinite;
}

.loader-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #00ffff;
  font-size: 1.2rem;
  animation: pulse 1.5s ease-in-out infinite;
}

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

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

@keyframes pulse {
  0%,
  100% {
    opacity: 0.3;
    transform: translate(-50%, -50%) scale(0.8);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.1);
    text-shadow: 0 0 10px #00ffff;
  }
}