/* CSS Custom Properties for Theme Support */
:root {
  /* Light theme colors (default) */
  --bs-body-bg: #ffffff;
  --bs-body-color: #212529;
  --bs-dark: #f8f9fa;
  --bs-light: #ffffff;
  --bs-primary: #0d6efd;
  --bs-card-bg: #ffffff;
  --bs-card-border: #dee2e6;
  --bs-card-hover-border: #0d6efd;
  --bs-header-bg: #f8f9fa;
  --bs-scrollbar-track: #e9ecef;
  --bs-scrollbar-thumb: #6c757d;
  --bs-scrollbar-thumb-hover: #495057;
}

/* Dark theme colors when user prefers dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bs-body-bg: #1a1a1a;
    --bs-body-color: #ffffff;
    --bs-dark: #212529;
    --bs-light: #2d3748;
    --bs-primary: #0d6efd;
    --bs-card-bg: #2d3748;
    --bs-card-border: #495057;
    --bs-card-hover-border: #0d6efd;
    --bs-header-bg: #212529;
    --bs-scrollbar-track: #2d3748;
    --bs-scrollbar-thumb: #4a5568;
    --bs-scrollbar-thumb-hover: #718096;
  }
}

body {
  background-color: var(--bs-body-bg) !important;
  color: var(--bs-body-color) !important;
}

/* Header styling */
.bg-dark {
  background-color: var(--bs-header-bg) !important;
}

/* Card styling for both themes */
.card.bg-dark {
  background-color: var(--bs-card-bg) !important;
  border: 1px solid var(--bs-card-border) !important;
  color: var(--bs-body-color) !important;
}

.card.bg-dark:hover {
  border-color: var(--bs-card-hover-border) !important;
  transform: translateY(-2px);
  transition: all 0.3s ease;
}

/* Text color overrides for cards */
.card.bg-dark .card-title,
.card.bg-dark .card-text {
  color: var(--bs-body-color) !important;
}

/* Fix text-muted visibility on dark backgrounds */
.card.bg-dark .text-muted {
  color: #adb5bd !important; /* Light gray that's readable on dark backgrounds */
}

@media (prefers-color-scheme: light) {
  .card.bg-dark .text-muted {
    color: #6c757d !important; /* Standard muted color for light theme */
  }
}

@media (prefers-color-scheme: dark) {
  .card.bg-dark .text-muted {
    color: #adb5bd !important; /* Light gray for dark theme */
  }
}

/* Image hover effects */
.card-img-top {
  transition: transform 0.3s ease;
}

.card:hover .card-img-top {
  transform: scale(1.05);
}

/* Modal styling for both themes */
.modal-fullscreen .modal-content {
  height: 100vh;
  border: none;
  border-radius: 0;
  background-color: var(--bs-body-bg) !important;
}

.modal-fullscreen .modal-header {
  background-color: var(--bs-body-bg) !important;
  border-bottom: 1px solid var(--bs-card-border) !important;
}

.modal-fullscreen .modal-footer {
  background-color: var(--bs-body-bg) !important;
  border-top: 1px solid var(--bs-card-border) !important;
}

/* Modal text colors */
.modal-fullscreen .text-white {
  color: var(--bs-body-color) !important;
}

/* Custom styling for image viewing */
.modal-fullscreen .modal-body img {
  cursor: pointer;
}

/* Navigation buttons for both themes */
.modal-header .btn-outline-light {
  border-color: var(--bs-card-border) !important;
  color: var(--bs-body-color) !important;
}

.modal-header .btn-outline-light:hover {
  background-color: var(--bs-primary) !important;
  border-color: var(--bs-primary) !important;
  color: white !important;
}

/* Close button for both themes */
@media (prefers-color-scheme: light) {
  .btn-close-white {
    filter: invert(1);
  }
}

@media (prefers-color-scheme: dark) {
  .btn-close-white {
    filter: invert(0);
  }
}

/* Center the modal navigation */
.modal-nav {
  display: flex;
  gap: 0.5rem;
}

/* Touch-friendly improvements using CSS */
.card, .btn, .card-img-top {
  touch-action: manipulation;
}

/* Mobile touch targets - follow WCAG guidelines */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
  
  .card:active {
    transform: scale(0.98);
    transition: transform 0.1s ease;
  }
}

/* Gallery image container for pinch-to-zoom */
.modal-body {
  overflow: hidden;
  position: relative;
  display: flex !important;
  justify-content: center !important;
  align-items: center !important;
  min-height: calc(100vh - 200px);
}

#modalImg {
  touch-action: pinch-zoom;
  user-select: none;
  transition: transform 0.2s ease;
  transform-origin: center center;
  max-height: calc(100vh - 200px); /* Account for header/footer with more space */
  max-width: calc(100vw - 40px);   /* Account for padding */
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: center;
  display: block;
  cursor: pointer;
}

#modalImg.zoomed {
  cursor: grab;
}

#modalImg.zoomed:active {
  cursor: grabbing;
}

/* Mobile modal improvements */
@media (max-width: 768px) {
  .modal-fullscreen .modal-body {
    overflow: visible;
    -webkit-overflow-scrolling: touch;
  }
  
  .modal-body::after {
    content: 'Swipe left/right to navigate • Pinch to zoom • Double tap to zoom';
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    opacity: 0;
    pointer-events: none;
    z-index: 10;
    transition: opacity 0.3s ease;
    animation: fadeInOut 4s ease-in-out;
  }
  
  .modal.show .modal-body::after {
    animation-delay: 1s;
  }
}

@keyframes fadeInOut {
  0% { opacity: 0; }
  15% { opacity: 0.8; }
  85% { opacity: 0.8; }
  100% { opacity: 0; }
}

/* Pan support when zoomed */
#modalImg.panning {
  cursor: grabbing !important;
}

/* Prevent iOS zoom bouncing */
.modal-fullscreen {
  -webkit-text-size-adjust: none;
  touch-action: pan-x pan-y pinch-zoom;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .btn-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-group .btn {
    border-radius: 0.375rem !important;
    margin-bottom: 0.25rem;
    min-height: 44px;
  }
  
  .modal-header {
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
  }
  
  .modal-nav {
    order: 1;
  }
  
  .modal-nav .btn {
    min-height: 48px;
    min-width: 48px;
    font-size: 1.2rem;
  }
  
  .image-counter {
    order: 2;
    font-size: 1.1rem;
  }
  
  .btn-close {
    order: 3;
    position: absolute;
    top: 1rem;
    right: 1rem;
    min-height: 44px;
    min-width: 44px;
  }
  
  /* Make gallery cards more touch-friendly */
  .gallery-item .card {
    margin-bottom: 1rem;
  }
  
  .gallery-item .card-img-top {
    height: 250px;
  }
}

/* Custom scrollbar for both themes */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bs-scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--bs-scrollbar-thumb);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--bs-scrollbar-thumb-hover);
}

/* Keyboard shortcut styling */
kbd {
  padding: 0.2rem 0.4rem;
  font-size: 0.75rem;
  color: var(--bs-body-color);
  background-color: var(--bs-card-bg);
  border: 1px solid var(--bs-card-border);
  border-radius: 0.25rem;
  margin-left: 0.5rem;
  font-family: monospace;
  opacity: 0.8;
}

.btn kbd {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
  color: currentColor;
}