.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--bg-darker);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loader {
  position: relative;
  width: 120px;
  height: 120px;
}

.loader-circle {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 4px solid transparent;
  border-top-color: var(--primary);
  border-right-color: var(--accent);
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
}

.loader-circle:nth-child(2) {
  border: 4px solid transparent;
  border-bottom-color: var(--primary-light);
  border-left-color: var(--accent-light);
  animation: spin 1.5s linear infinite reverse;
}

.loader-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  animation: pulse 2s ease-in-out infinite;
}

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

@keyframes pulse {
  0% {
    transform: translate(-50%, -50%) scale(0.9);
    opacity: 0.8;
  }
  50% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) scale(0.9);
    opacity: 0.8;
  }
}