/* Skeleton Loader for Instant Modal Display */

.modal-skeleton {
  padding: 24px;
  max-width: 1200px;
  margin: 0 auto;
  opacity: 0;
  display: none;
  transition: opacity 0.3s ease;
  /* Prevent layout shifts */
  contain: layout style paint;
}

.modal-skeleton.show {
  opacity: 1;
  display: block;
}

.skeleton-header {
  margin-bottom: 100px;
  text-align: center;
}

.skeleton-image {
  width: 100%;
  height: 400px;
  border-radius: 24px;
  margin-bottom: 24px;
  background: rgba(255, 255, 255, 0.05);
}

.skeleton-logo {
  width: 300px;
  height: 80px;
  margin: 0 auto;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
}

.skeleton-content {
  text-align: center;
}

.skeleton-title {
  width: 60%;
  height: 48px;
  margin: 0 auto 24px auto;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
}

.skeleton-text {
  width: 80%;
  height: 24px;
  margin: 0 auto 16px auto;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.05);
}

.skeleton-text:nth-child(3) {
  width: 70%;
}

.skeleton-text:last-child {
  width: 60%;
}

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 60px 0;
}

.skeleton-card {
  height: 120px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.05);
}

.skeleton-gallery {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-auto-rows: 200px;
  gap: 12px;
  margin-top: 60px;
}

.skeleton-gallery-item {
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.05);
}

.skeleton-gallery-item.large {
  grid-column: span 6;
  grid-row: span 3;
}

.skeleton-gallery-item.medium {
  grid-column: span 3;
  grid-row: span 2;
}

/* Shimmer Animation */
.skeleton-shimmer {
  position: relative;
  overflow: hidden;
}

.skeleton-shimmer::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1) 50%,
    transparent
  );
  animation: skeleton-shimmer 2s infinite;
}

@keyframes skeleton-shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

/* Simple Content Loading - No Progressive Animations */
.content-section {
  opacity: 1;
  transform: translateY(0);
}

/* Hardware Acceleration */
.modal-skeleton,
.skeleton-shimmer,
.content-section {
  transform: translateZ(0);
  will-change: transform, opacity;
}

/* Responsive Design */
@media (max-width: 992px) {
  .skeleton-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .skeleton-image {
    height: 300px;
  }
  
  .skeleton-logo {
    width: 250px;
    height: 60px;
  }
}

@media (max-width: 768px) {
  .modal-skeleton {
    padding: 16px;
  }
  
  .skeleton-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .skeleton-gallery {
    grid-auto-rows: 150px;
  }
  
  .skeleton-gallery-item.large,
  .skeleton-gallery-item.medium {
    grid-column: span 6;
    grid-row: span 1;
  }
  
  .skeleton-image {
    height: 250px;
  }
  
  .skeleton-logo {
    width: 200px;
    height: 50px;
  }
  
  .skeleton-title {
    height: 36px;
  }
  
  .skeleton-text {
    height: 20px;
  }
}

@media (max-width: 576px) {
  .skeleton-header {
    margin-bottom: 60px;
  }
  
  .skeleton-image {
    height: 200px;
    border-radius: 16px;
  }
  
  .skeleton-logo {
    width: 150px;
    height: 40px;
  }
  
  .skeleton-title {
    width: 90%;
    height: 32px;
  }
  
  .skeleton-text {
    width: 95%;
    height: 18px;
  }
  
  .skeleton-card {
    height: 100px;
  }
  
  .skeleton-gallery {
    margin-top: 40px;
    gap: 8px;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  .skeleton-shimmer::before,
  .content-section {
    animation: none;
    transition: none;
  }
  
  .skeleton-shimmer::before {
    background: rgba(255, 255, 255, 0.1);
  }
}

/* High contrast mode */
@media (prefers-contrast: high) {
  .skeleton-image,
  .skeleton-logo,
  .skeleton-title,
  .skeleton-text,
  .skeleton-card,
  .skeleton-gallery-item {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
  }
  
  .skeleton-shimmer::before {
    background: linear-gradient(
      90deg,
      transparent,
      rgba(255, 255, 255, 0.3) 50%,
      transparent
    );
  }
}

/* Loading state indicators */
.loading-indicator {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  padding: 8px 12px;
  border-radius: 6px;
  font-family: monospace;
  font-size: 12px;
  z-index: 10001;
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.loading-indicator::before {
  content: '⏳ ';
}

/* Skeleton variations for different content types */
.skeleton-video {
  position: relative;
  background: rgba(255, 255, 255, 0.05);
}

.skeleton-video::after {
  content: '▶';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 48px;
  color: rgba(255, 255, 255, 0.3);
}

.skeleton-button {
  width: 120px;
  height: 44px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.05);
  margin: 0 auto;
}

/* Smooth transitions for real content */
.pm__header,
.pm__intro,
.pm__description,
.pm__gallery,
.pm__key-info {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.project-modal.content-loaded .pm__header,
.project-modal.content-loaded .pm__intro,
.project-modal.content-loaded .pm__description,
.project-modal.content-loaded .pm__gallery,
.project-modal.content-loaded .pm__key-info {
  opacity: 1;
  transform: translateY(0);
}