/* Professional Loading Animations - Simple, Flat & Elegant */

/* Global page loading overlay - Minimal design with maximum z-index */
.page-loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.98);
  z-index: 2147483647; /* Maximum safe z-index value */
  display: none;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s ease-out;
}

.page-loading-overlay.show {
  display: flex;
  opacity: 1;
  animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Simple minimal spinner */
.loading-spinner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 20px;
}

/* Clean minimal dots - flat design */
.loading-dots {
  display: flex;
  gap: 8px;
  align-items: center;
}

.loading-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #6c757d;
  animation: simpleFade 1.2s ease-in-out infinite;
}

.loading-dot:nth-child(1) { animation-delay: 0s; }
.loading-dot:nth-child(2) { animation-delay: 0.2s; }
.loading-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes simpleFade {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.1);
  }
}

.loading-text {
  margin-top: 8px;
  font-size: 14px;
  color: #6c757d;
  font-weight: 400;
  letter-spacing: 0.3px;
  text-align: center;
}

/* Button loading states - flat design */
.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.85;
  transition: opacity 0.15s ease;
}

.btn-loading .btn-text {
  opacity: 0.7;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  right: 12px;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  border: 1.5px solid transparent;
  border-top: 1.5px solid currentColor;
  border-radius: 50%;
  animation: simpleRotate 0.8s linear infinite;
}

@keyframes simpleRotate {
  from { transform: translateY(-50%) rotate(0deg); }
  to { transform: translateY(-50%) rotate(360deg); }
}

/* Link loading states - minimal design */
.link-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.75;
  transition: all 0.15s ease;
}

.link-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -18px;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border: 1px solid transparent;
  border-top: 1px solid currentColor;
  border-radius: 50%;
  animation: simpleRotate 0.8s linear infinite;
}

/* Desktop specific: Disable cursor loading animations for screens wider than 768px */
@media (min-width: 769px) {
  .link-loading::after {
    display: none !important;
  }
  
  .btn-loading::after {
    display: none !important;
  }
  
  /* Keep only opacity change for desktop, remove spinning animations */
  .link-loading {
    opacity: 0.85;
  }
  
  .btn-loading {
    opacity: 0.9;
  }
}

/* Form loading overlay - clean minimal */
.form-loading-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  z-index: 2147483646; /* One level below page overlay */
  transition: opacity 0.2s ease;
}

.form-loading-overlay.show {
  display: flex;
  opacity: 1;
}

.form-container {
  position: relative;
}

/* Simple pulse for important elements */
.pulse-loading {
  animation: simplePulse 2s ease-in-out infinite;
}

@keyframes simplePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* Minimal progress bar with maximum z-index */
.loading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: #6c757d;
  z-index: 2147483647; /* Same as page overlay */
  transition: width 0.25s ease-out, opacity 0.2s ease;
  opacity: 0;
}

.loading-progress.show {
  opacity: 1;
}

/* Simple skeleton loading */
.skeleton-loading {
  background: linear-gradient(90deg, #f8f9fa 0%, #e9ecef 50%, #f8f9fa 100%);
  background-size: 200% 100%;
  animation: simpleShimmer 1.8s ease-in-out infinite;
}

@keyframes simpleShimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Mobile specific adjustments */
@media (max-width: 768px) {
  .loading-dot {
    width: 10px;
    height: 10px;
  }
  
  .loading-text {
    font-size: 13px;
  }
  
  .btn-loading::after {
    width: 14px;
    height: 14px;
    right: 10px;
  }
  
  .link-loading::after {
    width: 10px;
    height: 10px;
    right: -18px;
  }
}

/* Theme-specific loading states - flat colors */
.shopping-loading .loading-dot {
  background: #28a745;
}

.navigation-loading .loading-dot {
  background: #007bff;
}

.form-loading .loading-dot {
  background: #ffc107;
}

/* Profile page specific loading styles */
.profile-loading .loading-dot {
  background: #6f42c1;
}

.profile-loading .loading-text {
  color: #6f42c1;
  font-weight: 500;
}

.profile-loading .loading-spinner {
  gap: 24px;
}

/* Cart page specific loading styles */
.cart-loading .loading-dot {
  background: #28a745;
}

.cart-loading .loading-text {
  color: #28a745;
  font-weight: 500;
}

.cart-loading .loading-spinner {
  gap: 24px;
}

/* Homepage specific loading styles */
.homepage-loading .loading-dot {
  background: #007bff;
}

.homepage-loading .loading-text {
  color: #007bff;
  font-weight: 500;
}

.homepage-loading .loading-spinner {
  gap: 24px;
}

/* Smooth transitions for all loading elements */
.smooth-transition {
  transition: all 0.2s ease-out;
}

/* Alternative simple loading ring - minimal */
.loading-ring {
  display: inline-block;
  position: relative;
  width: 24px;
  height: 24px;
}

.loading-ring div {
  box-sizing: border-box;
  display: block;
  position: absolute;
  width: 20px;
  height: 20px;
  margin: 2px;
  border: 2px solid #6c757d;
  border-radius: 50%;
  animation: simpleRingSpin 1s linear infinite;
  border-color: #6c757d transparent transparent transparent;
}

.loading-ring div:nth-child(1) { animation-delay: -0.3s; }
.loading-ring div:nth-child(2) { animation-delay: -0.2s; }
.loading-ring div:nth-child(3) { animation-delay: -0.1s; }

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