/**
 * Loading Animation Styles for JLearn PWA
 * Displays a beautiful loading spinner during page transitions
 */

/* Loading Animation Container */
.pwa-loading-animation {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.pwa-loading-animation.show {
  opacity: 1;
  pointer-events: auto;
}

/* Loading Overlay */
.pwa-loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(2px);
  z-index: -1;
}

/* Loading Container */
.pwa-loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
}

/* Loading Spinner */
.pwa-loading-spinner {
  position: relative;
  width: 60px;
  height: 60px;
}

/* Spinner Rings */
.spinner-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border: 4px solid transparent;
  border-radius: 50%;
  border-top-color: #4f46e5;
  border-right-color: #7c3aed;
  animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.spinner-ring:nth-child(1) {
  animation-delay: -0.45s;
}

.spinner-ring:nth-child(2) {
  animation-delay: -0.3s;
}

.spinner-ring:nth-child(3) {
  animation-delay: -0.15s;
}

.spinner-ring:nth-child(4) {
  animation-delay: 0s;
}

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

/* Loading Text */
.pwa-loading-text {
  text-align: center;
}

.loading-message {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: #1f2937;
  letter-spacing: 0.5px;
}

/* Pulse Animation for Text */
@keyframes pulse-text {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.6;
  }
}

.loading-message {
  animation: pulse-text 1.5s ease-in-out infinite;
}

/* Mobile Responsive */
@media (max-width: 480px) {
  .pwa-loading-spinner {
    width: 50px;
    height: 50px;
  }

  .spinner-ring {
    border-width: 3px;
  }

  .loading-message {
    font-size: 14px;
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  .pwa-loading-overlay {
    background: rgba(17, 24, 39, 0.95);
  }

  .loading-message {
    color: #f3f4f6;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .spinner-ring {
    animation: none;
    border-top-color: #4f46e5;
    border-right-color: #7c3aed;
  }

  .loading-message {
    animation: none;
  }
}

/* Print Styles */
@media print {
  .pwa-loading-animation {
    display: none !important;
  }
}