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

.preloader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.preloader-spinner {
  width: 70px;
  height: 70px;
  position: relative;
}

.preloader-spinner:before,
.preloader-spinner:after {
  content: '';
  position: absolute;
  border-radius: 50%;
}

.preloader-spinner:before {
  width: 100%;
  height: 100%;
  background-image: linear-gradient(var(--primary-color, #007bff), #ffffff);
  animation: spin 1s infinite linear;
}

.preloader-spinner:after {
  width: 80%;
  height: 80%;
  background-color: #ffffff;
  top: 10%;
  left: 10%;
  border-radius: 50%;
}

.preloader-logo {
  position: absolute;
  width: 50px;
  height: 50px;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.preloader-logo img {
  max-width: 100%;
  max-height: 100%;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .preloader-spinner {
    width: 50px;
    height: 50px;
  }
  
  .preloader-logo {
    width: 35px;
    height: 35px;
  }
}