/* ============================================================
   CERTIFICATES - Windows Photos Gallery Style
   ============================================================ */

/* Dark gallery background */
#window-Certificate .window-content {
  background: #1e1e1e !important;
}

#window-Certificate .page-shell {
  background: #1e1e1e;
}

/* Gallery header bar */
#window-Certificate .app-bar {
  background: #2d2d2d;
  border-bottom: 1px solid #3a3a3a;
  height: 48px;
  padding: 0 20px;
}

#window-Certificate .app-bar-title {
  color: #ffffff;
  font-size: 16px;
  font-weight: 400;
  font-family: "Segoe UI", system-ui, sans-serif;
}

#window-Certificate .app-bar-icon {
  filter: brightness(1.2);
}

/* Gallery toolbar */
.gallery-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: #1e1e1e;
  border-bottom: 1px solid #2a2a2a;
}

.gallery-toolbar-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.gallery-toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.gallery-btn {
  padding: 6px 14px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: #cccccc;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.gallery-btn:hover {
  background: rgba(255,255,255,0.08);
  color: #ffffff;
}

.gallery-btn.active {
  background: rgba(255,255,255,0.12);
  color: #ffffff;
}

.gallery-count {
  color: #888888;
  font-size: 13px;
  margin-left: 8px;
}

.gallery-divider {
  width: 1px;
  height: 20px;
  background: #3a3a3a;
  margin: 0 4px;
}

/* Photo grid - masonry style like Photos app */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 4px;
  padding: 4px;
  background: #1e1e1e;
}

.gallery-grid.compact {
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 2px;
}

.gallery-grid.large {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 8px;
  padding: 8px;
}

/* Photo item container */
.gallery-photo-item {
  position: relative;
  aspect-ratio: 4/3;
  background: #2a2a2a;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.2s ease;
  group: true;
}

.gallery-photo-item:hover {
  transform: scale(1.02);
  z-index: 10;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

.gallery-photo-item:hover .gallery-photo-overlay {
  opacity: 1;
}

.gallery-photo-item:hover .gallery-select-btn {
  opacity: 1;
}

/* Photo image */
.gallery-photo-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.gallery-photo-item:hover img {
  transform: scale(1.05);
}

/* Photo overlay on hover */
.gallery-photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.1) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 12px;
}

/* Photo info at bottom */
.gallery-photo-info {
  color: #ffffff;
}

.gallery-photo-title {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gallery-photo-date {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
}

/* Selection checkbox */
.gallery-select-btn {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(255,255,255,0.6);
  border-radius: 50%;
  background: rgba(0,0,0,0.3);
  cursor: pointer;
  opacity: 0;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-select-btn:hover {
  border-color: #ffffff;
  background: rgba(0,0,0,0.5);
}

.gallery-select-btn.selected {
  opacity: 1;
  background: #0078d4;
  border-color: #0078d4;
}

.gallery-select-btn.selected::after {
  content: '✓';
  color: white;
  font-size: 12px;
  font-weight: bold;
}

/* Date group headers */
.gallery-date-group {
  grid-column: 1 / -1;
  padding: 16px 8px 8px;
  color: #ffffff;
  font-size: 18px;
  font-weight: 600;
  font-family: "Segoe UI", system-ui, sans-serif;
}

.gallery-date-group:first-child {
  padding-top: 8px;
}

.gallery-date-sub {
  font-size: 13px;
  color: #888888;
  font-weight: 400;
  margin-left: 8px;
}

/* View toggle buttons */
.view-toggle {
  display: flex;
  gap: 2px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  padding: 2px;
}

.view-toggle-btn {
  width: 32px;
  height: 28px;
  border: none;
  background: transparent;
  color: #888888;
  border-radius: 3px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all 0.15s;
}

.view-toggle-btn:hover {
  color: #ffffff;
  background: rgba(255,255,255,0.08);
}

.view-toggle-btn.active {
  color: #ffffff;
  background: rgba(255,255,255,0.12);
}

/* Scrollbar styling for dark theme */
#window-Certificate .window-content::-webkit-scrollbar {
  width: 8px;
}

#window-Certificate .window-content::-webkit-scrollbar-track {
  background: #1e1e1e;
}

#window-Certificate .window-content::-webkit-scrollbar-thumb {
  background: #3a3a3a;
  border-radius: 4px;
}

#window-Certificate .window-content::-webkit-scrollbar-thumb:hover {
  background: #4a4a4a;
}

/* Photo viewer modal (lightbox style) */
.photo-viewer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.92);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.photo-viewer-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.photo-viewer-content {
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.photo-viewer-content img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
}

.photo-viewer-info {
  margin-top: 16px;
  text-align: center;
  color: #ffffff;
}

.photo-viewer-title {
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 4px;
}

.photo-viewer-meta {
  font-size: 13px;
  color: #888888;
}

.photo-viewer-close {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border: none;
  background: rgba(255,255,255,0.1);
  color: #ffffff;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.photo-viewer-close:hover {
  background: rgba(255,255,255,0.2);
}

/* Navigation arrows in viewer */
.photo-viewer-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: none;
  background: rgba(255,255,255,0.1);
  color: #ffffff;
  border-radius: 50%;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.photo-viewer-nav:hover {
  background: rgba(255,255,255,0.2);
}

.photo-viewer-nav.prev { left: 20px; }
.photo-viewer-nav.next { right: 20px; }

/* ============================================================
Certifcate window Hider
   ============================================================ */

#window-Certificate.photo-viewer-open .window-decor {
  display: none !important;
}

#window-Certificate.photo-viewer-open .window-content {
  z-index: 90;
  overflow: visible;
}

#window-Certificate.photo-viewer-open .window-header {
  z-index: 1;
}

/* Responsive */
@media (max-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 2px;
    padding: 2px;
  }

  .gallery-toolbar {
    padding: 8px 12px;
  }

  .gallery-btn {
    padding: 4px 10px;
    font-size: 12px;
  }
}