/* ===================================
   PINAKOTHEKE GALLERY STYLES
   ==================================== */

/* --- Gallery Grid Container --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 1.5rem;
  padding: 2rem;
  background-color: #f8f8f8;
  width: 100%;
  box-sizing: border-box;
}

.gallery-grid.masonry {
  column-count: 3;
  column-gap: 1.5rem;
}

@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    padding: 1rem;
  }

  .gallery-grid.masonry {
    column-count: 2;
    column-gap: 1rem;
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.75rem;
    padding: 0.75rem;
  }

  .gallery-grid.masonry {
    column-count: 1;
  }
}

/* --- Gallery Item --- */
.gallery-item {
  position: relative;
  overflow: hidden;
  background-color: #ffffff;
  border: 1px solid #e0e0e0;
  cursor: pointer;
  transition: all 0.3s ease;
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
}

.gallery-item:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  border-color: #ff00ff;
}

.gallery-item.masonry {
  margin-bottom: 1.5rem;
  break-inside: avoid;
}

/* --- Image Container with Lazy Loading --- */
.gallery-image-container {
  position: relative;
  width: 100%;
  padding-bottom: 100%; /* 1:1 aspect ratio */
  overflow: hidden;
  background-color: #f0f0f0;
}

.gallery-image-container img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.gallery-image-container img.loaded {
  opacity: 1;
}

/* Lazy loading placeholder */
.gallery-image-container.loading::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, #e0e0e0 0%, #f0f0f0 50%, #e0e0e0 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  z-index: 1;
}

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

/* --- Image Caption Overlay --- */
.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: #ffffff;
  padding: 2rem 1rem 1rem;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  z-index: 2;
}

.gallery-item:hover .gallery-caption {
  transform: translateY(0);
}

.gallery-caption h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.3;
}

.gallery-caption p {
  margin: 0;
  font-size: 0.875rem;
  opacity: 0.9;
  line-height: 1.4;
}

.gallery-caption .gallery-category {
  display: inline-block;
  background-color: #ff00ff;
  color: #ffffff;
  padding: 0.25rem 0.5rem;
  border-radius: 2px;
  font-size: 0.75rem;
  margin-top: 0.5rem;
  font-weight: 600;
}

/* --- Category Filter Buttons --- */
.gallery-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 1.5rem 2rem;
  background-color: #ffffff;
  border-bottom: 1px solid #e0e0e0;
  margin-bottom: 1rem;
}

.gallery-filter-btn {
  padding: 0.5rem 1.25rem;
  border: 1px solid #d0d0d0;
  background-color: #ffffff;
  color: #333333;
  cursor: pointer;
  border-radius: 3px;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.gallery-filter-btn:hover {
  border-color: #ff00ff;
  color: #ff00ff;
}

.gallery-filter-btn.active {
  background-color: #ff00ff;
  color: #ffffff;
  border-color: #ff00ff;
}

@media (max-width: 480px) {
  .gallery-filters {
    padding: 1rem;
    gap: 0.5rem;
  }

  .gallery-filter-btn {
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
  }
}

/* --- Lightbox Overlay --- */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s ease,
    visibility 0.3s ease;
  padding: 1rem;
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  width: 100%;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: lightboxZoomIn 0.3s ease;
}

@keyframes lightboxZoomIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* --- Lightbox Image --- */
.lightbox-image-container {
  position: relative;
  width: 100%;
  max-width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-grow: 1;
}

.lightbox-image-container img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

/* --- Lightbox Caption --- */
.lightbox-caption {
  background-color: rgba(0, 0, 0, 0.7);
  color: #ffffff;
  padding: 1.5rem;
  text-align: center;
  border-top: 1px solid #333333;
  margin-top: 1rem;
}

.lightbox-caption h2 {
  margin: 0 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.lightbox-caption p {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.5;
}

.lightbox-caption .lightbox-category {
  display: inline-block;
  background-color: #ff00ff;
  color: #ffffff;
  padding: 0.5rem 0.75rem;
  border-radius: 2px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* --- Lightbox Navigation Arrows --- */
.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 50px;
  background-color: rgba(255, 0, 255, 0.8);
  border: none;
  color: #ffffff;
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 10;
  user-select: none;
}

.lightbox-nav:hover {
  background-color: #ff00ff;
  transform: translateY(-50%) scale(1.1);
}

.lightbox-nav.prev {
  left: 1rem;
}

.lightbox-nav.next {
  right: 1rem;
}

@media (max-width: 768px) {
  .lightbox-nav {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }

  .lightbox-nav.prev {
    left: 0.5rem;
  }

  .lightbox-nav.next {
    right: 0.5rem;
  }
}

@media (max-width: 480px) {
  .lightbox-nav {
    width: 35px;
    height: 35px;
    font-size: 1rem;
  }

  .lightbox-nav.prev {
    left: 0.25rem;
  }

  .lightbox-nav.next {
    right: 0.25rem;
  }
}

/* --- Lightbox Close Button --- */
.lightbox-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 0, 255, 0.8);
  border: none;
  color: #ffffff;
  font-size: 1.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  z-index: 11;
  padding: 0;
  line-height: 1;
}

.lightbox-close:hover {
  background-color: #ff00ff;
  transform: scale(1.15);
}

@media (max-width: 768px) {
  .lightbox-close {
    width: 35px;
    height: 35px;
    font-size: 1.5rem;
    top: 1rem;
    right: 1rem;
  }
}

@media (max-width: 480px) {
  .lightbox-close {
    width: 30px;
    height: 30px;
    font-size: 1.25rem;
    top: 0.75rem;
    right: 0.75rem;
  }
}

/* --- Lightbox Counter --- */
.lightbox-counter {
  position: absolute;
  bottom: 1.5rem;
  left: 1.5rem;
  background-color: rgba(0, 0, 0, 0.6);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: 3px;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

@media (max-width: 768px) {
  .lightbox-counter {
    bottom: 1rem;
    left: 1rem;
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }
}

/* --- Thumbnail Hover Zoom Effect --- */
.gallery-item .gallery-image-container {
  perspective: 1000px;
}

.gallery-item:hover .gallery-image-container img {
  transform: scale(1.05);
  transition: transform 0.4s ease;
}

/* --- Mobile Swipe-Friendly Styles --- */
@media (max-width: 768px) {
  .lightbox-content {
    max-width: 100vw;
    max-height: 100vh;
  }

  .lightbox-image-container img {
    max-height: 80vh;
  }

  .lightbox-caption {
    max-height: 20vh;
    overflow-y: auto;
  }
}

/* Touch-friendly button sizes */
@media (hover: none) and (pointer: coarse) {
  .lightbox-nav,
  .lightbox-close,
  .gallery-filter-btn {
    min-width: 48px;
    min-height: 48px;
  }
}

/* --- Loading State --- */
.gallery-item.loading .gallery-image-container {
  background: linear-gradient(90deg, #e0e0e0 0%, #f0f0f0 50%, #e0e0e0 100%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* --- Print Styles --- */
@media print {
  .gallery-filters,
  .lightbox-nav,
  .lightbox-close,
  .lightbox-counter {
    display: none !important;
  }

  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    padding: 0;
    background-color: transparent;
  }

  .gallery-item {
    page-break-inside: avoid;
    border: 1px solid #cccccc;
    box-shadow: none;
    margin-bottom: 1rem;
  }

  .gallery-image-container {
    padding-bottom: 100%;
  }

  .gallery-image-container img {
    opacity: 1 !important;
  }

  .gallery-caption {
    position: static;
    transform: none;
    background: #f5f5f5;
    padding: 0.75rem;
    color: #333333;
  }

  .gallery-caption h3 {
    font-size: 0.95rem;
  }

  .gallery-caption p {
    font-size: 0.8rem;
  }

  .lightbox {
    display: none !important;
  }

  .gallery-item:hover {
    box-shadow: none;
  }
}

/* --- Accessibility --- */
.gallery-filter-btn:focus,
.lightbox-nav:focus,
.lightbox-close:focus {
  outline: 2px solid #ff00ff;
  outline-offset: 2px;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .gallery-item,
  .gallery-image-container img,
  .gallery-caption,
  .gallery-filter-btn,
  .lightbox,
  .lightbox-content,
  .lightbox-nav,
  .lightbox-close {
    animation: none !important;
    transition: none !important;
  }
}

/* --- Dark Mode Support --- */
@media (prefers-color-scheme: dark) {
  .gallery-grid {
    background-color: #1a1a1a;
  }

  .gallery-item {
    background-color: #2a2a2a;
    border-color: #404040;
  }

  .gallery-image-container {
    background-color: #1a1a1a;
  }

  .gallery-image-container.loading::before {
    background: linear-gradient(90deg, #333333 0%, #444444 50%, #333333 100%);
  }

  .gallery-filters {
    background-color: #2a2a2a;
    border-color: #404040;
  }

  .gallery-filter-btn {
    background-color: #2a2a2a;
    color: #ffffff;
    border-color: #404040;
  }

  .gallery-filter-btn:hover {
    color: #ff00ff;
    border-color: #ff00ff;
  }

  .gallery-filter-btn.active {
    background-color: #ff00ff;
    color: #000000;
  }

  .lightbox {
    background-color: rgba(0, 0, 0, 0.98);
  }

  .lightbox-caption {
    background-color: rgba(0, 0, 0, 0.9);
    border-color: #404040;
  }

  .lightbox-counter {
    background-color: rgba(0, 0, 0, 0.8);
  }

  @media print {
    .gallery-item {
      border-color: #555555;
    }

    .gallery-caption {
      background-color: #e0e0e0;
      color: #000000;
    }
  }
}