/* Lightbox & Image Tagging Styles */

#lightbox {
  position: fixed;
  z-index: 2000;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.3);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s ease;
}

#lightbox-content {
  display: flex;
  flex-direction: row;
  width: 95%;
  height: 90%;
  max-width: 1300px;
  max-height: 90vh;
  background-color: rgba(255, 255, 255, 0.4);
  -webkit-backdrop-filter: blur(25px);
  backdrop-filter: blur(25px);
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

#lightbox-viewer {
  flex: 1;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 0;
  min-height: 0;
  overflow: visible; /* Permette ai tasti di uscire */
  background: rgba(255, 255, 255, 0.05);
  padding: 16px 40px; /* Mantiene spazio per le frecce senza sprecare troppa larghezza */
}

#lightbox-image-area {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 0;
}

#lightbox-img {
  display: block;
  object-fit: contain;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: zoom-in;
  -webkit-user-select: none;
  user-select: none;
}

/* Specifico per immagini: mantengono proporzioni naturali */
img#lightbox-img {
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
  object-fit: contain;
}

/* Specifico per modelli 3D: devono occupare tutto lo spazio */
model-viewer#lightbox-img {
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
}

#lightbox-canvas {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
}

/* Desktop only: contain zoomed image within canvas, prevent leak behind sidebar */
@media (min-width: 901px) {
  #lightbox-canvas.is-zoomed {
    overflow: hidden;
  }
  #lightbox-canvas.is-zoomed .image-tag-wrapper,
  #lightbox-canvas.is-zoomed img#lightbox-img {
    cursor: grab;
  }
  #lightbox-canvas.is-zoomed.dragging .image-tag-wrapper,
  #lightbox-canvas.is-zoomed.dragging img#lightbox-img {
    cursor: grabbing;
  }
}

model-viewer {
  width: 100%;
  height: 100%;
  background-color: transparent;
  --poster-color: transparent;
  display: block;
}

/* --- LIGHTBOX CONTROLS --- */
#lightbox-close {
  position: fixed;
  top: 25px;
  right: 25px;
  width: 44px;
  height: 44px;
  background: rgba(15, 23, 42, 0.6);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2100;
  transition:
    all 0.2s ease,
    opacity 0.3s ease;
}

#lightbox-close:hover {
  background: rgba(239, 68, 68, 0.8);
  transform: scale(1.1);
}

#lightbox-prev,
#lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  background: rgba(0, 0, 0, 0.5); /* Più sobrio */
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2050;
  transition: all 0.2s ease;
  font-size: 20px;
  -webkit-user-select: none;
  user-select: none;
}

#lightbox-prev {
  left: 15px;
} /* Bordi del viewer, non dell'immagine */
#lightbox-next {
  right: 15px;
}

#lightbox-prev:hover,
#lightbox-next:hover {
  background: rgba(0, 0, 0, 0.85);
  transform: translateY(-50%) scale(1.1);
}

.lightbox-document-stack-btn {
  position: absolute;
  z-index: 2070;
  top: 18px;
  left: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.72);
  color: #fff;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.2);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    opacity 0.3s ease;
}

.lightbox-document-stack-btn:hover {
  background: rgba(15, 23, 42, 0.9);
  transform: translateY(-1px);
}

.lightbox-document-stack-btn .material-symbols-outlined {
  font-size: 22px;
}

.lightbox-document-stack-label {
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.lightbox-document-pages-dialog {
  width: min(920px, calc(100vw - 32px));
  max-height: min(820px, calc(100dvh - 32px));
  padding: 0;
  border: 0;
  border-radius: 22px;
  background: transparent;
  color: #0f172a;
  overflow: hidden;
  box-shadow: 0 28px 80px rgba(15, 23, 42, 0.35);
}

.lightbox-document-pages-dialog::backdrop {
  background: rgba(15, 23, 42, 0.68);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.lightbox-document-pages-shell {
  max-height: min(820px, calc(100dvh - 32px));
  display: flex;
  flex-direction: column;
  background: #f8fafc;
}

.lightbox-document-pages-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px;
  border-bottom: 1px solid #e2e8f0;
  background: rgba(255, 255, 255, 0.94);
}

.lightbox-document-pages-heading {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.lightbox-document-pages-heading > .material-symbols-outlined {
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 13px;
  background: #e0e7ff;
  color: #4338ca;
}

.lightbox-document-pages-heading h2 {
  margin: 0;
  overflow: hidden;
  color: #0f172a;
  font-size: 1.05rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lightbox-document-pages-heading p {
  margin: 4px 0 0;
  color: #64748b;
  font-size: 0.8rem;
}

.lightbox-document-pages-close {
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid #e2e8f0;
  border-radius: 50%;
  background: #fff;
  color: #475569;
  cursor: pointer;
}

.lightbox-document-pages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 14px;
  padding: 20px;
  overflow-y: auto;
}

.lightbox-document-page-card {
  min-width: 0;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 16px;
  background: #fff;
  color: inherit;
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.08);
  cursor: pointer;
  text-align: left;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.lightbox-document-page-card:hover {
  border-color: #a5b4fc;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.14);
}

.lightbox-document-page-card.is-active {
  border-color: #4f46e5;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.14);
}

.lightbox-document-page-preview {
  display: block;
  aspect-ratio: 0.74;
  padding: 8px;
  background:
    linear-gradient(135deg, rgba(226, 232, 240, 0.7), transparent), #f1f5f9;
}

.lightbox-document-page-preview img {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 8px;
  background: #fff;
  object-fit: contain;
}

.lightbox-document-page-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 12px;
}

.lightbox-document-page-meta strong {
  color: #1e293b;
  font-size: 0.82rem;
}

.lightbox-document-page-meta small {
  overflow: hidden;
  color: #64748b;
  font-size: 0.68rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Matitine dei tag - nascoste di default, visibili solo on hover */
.tag-inline-btn {
  opacity: 0 !important; /* Forza l'invisibilità quando non attiva */
  position: absolute;
  background: rgba(15, 23, 42, 0.8) !important;
  color: white !important;
  border-radius: 50% !important;
  width: 28px !important;
  height: 28px !important;
  min-width: 28px !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  z-index: 135 !important;
  transition:
    opacity 0.2s ease,
    transform 0.2s ease !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  padding: 0 !important;
}

/* Hide scrollbars globally for lightbox elements while keeping function */
#lightbox-sidebar,
#desc-text {
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}
#lightbox-sidebar::-webkit-scrollbar,
#desc-text::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.tag-bounding-box .tag-inline-btn.tag-edit-btn {
  display: none !important;
}

#lightbox.edit-tags-mode .tag-bounding-box.editing .tag-inline-btn.tag-edit-btn,
#lightbox.edit-tags-mode .tag-bounding-box:hover .tag-inline-btn.tag-edit-btn {
  display: flex !important;
  opacity: 1 !important;
}

.tag-action-container .tag-inline-btn {
  opacity: 1 !important;
}

.tag-edit-btn {
  top: -14px;
  right: -14px;
}

/* Maniglia di ridimensionamento */
.tag-resize-handle {
  position: absolute;
  width: 12px;
  height: 12px;
  background: #fff;
  border: 1.5px solid #000;
  cursor: nwse-resize;
  z-index: 140;
  border-radius: 2px;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.3);
}

/* Classi di posizionamento per gli handle */
.tag-resize-handle.br {
  bottom: -6px;
  right: -6px;
}

.tag-resize-handle.hidden {
  display: none !important;
}

/* Contenitore pulsanti azione (Salva/Annulla) */
.tag-action-container {
  position: absolute;
  bottom: -36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex !important;
  gap: 8px !important;
  z-index: 150 !important;
  white-space: nowrap;
  padding: 2px 4px;
  background: rgba(15, 23, 42, 0.4);
  border-radius: 20px;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  pointer-events: auto !important;
}

.tag-action-container.hidden {
  display: none !important;
}

.tag-save-btn {
  position: static !important;
  background: #10b981 !important; /* Verde smeraldo */
  color: white !important;
}

.tag-remove-btn {
  position: static !important;
  background: #ef4444 !important; /* Rosso */
  color: white !important;
}

.tag-inline-btn span {
  font-size: 18px !important;
  line-height: 1 !important;
  -webkit-user-select: none;
  user-select: none;
}

#lightbox-prev.hidden,
#lightbox-next.hidden {
  display: none;
}

/* Image Tag Wrapper (Shrink-to-fit) */
.image-tag-wrapper {
  position: relative;
  display: inline-block;
  max-width: 100%;
  max-height: 100%;
}

.lightbox-desktop-media-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: auto;
}

.image-tag-wrapper img {
  display: block;
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
}

/* --- TAGGING SYSTEM --- */
.tag-bounding-box {
  position: absolute;
  border: 1px solid transparent; /* Change to solid for consistency with staging */
  border-radius: 4px;
  z-index: 100;
  transition:
    background 0.2s,
    border-color 0.2s,
    box-shadow 0.2s;
  box-sizing: border-box;
}

.tag-bounding-box.active,
.tag-bounding-box:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.85); /* Slightly brighter */
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
  z-index: 101;
}

/* PC: In non-edit mode, prioritize the zoom cursor even when hovering over tags */
@media (hover: hover) and (pointer: fine) {
  #lightbox:not(.edit-tags-mode) .tag-bounding-box {
    cursor: zoom-in !important;
  }
}

/* Mobile: when zoomed, tags must not block pan/zoom touch gestures */
@media (max-width: 900px) {
  #lightbox-canvas.zoomed .tag-bounding-box,
  #lightbox-canvas.is-zoomed .tag-bounding-box {
    pointer-events: none !important;
  }
}

/* Desktop: when zoomed, tags stay interactive for hover but don't block drag */
@media (min-width: 901px) {
  #lightbox-canvas.is-zoomed .tag-bounding-box {
    cursor: grab;
  }
  #lightbox-canvas.is-zoomed.dragging .tag-bounding-box {
    pointer-events: none !important;
  }
}

.tag-bounding-box.dragging,
.tag-bounding-box.editing {
  border-color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.1);
  z-index: 102;
  transition: none !important;
}

/* Nascondi il nome durante l'editing per evitare sovrapposizioni coi pulsanti salva/annulla (che prendono il suo posto) */
.tag-bounding-box.editing .photo-tag-label {
  opacity: 0 !important;
  display: none !important;
}

/* Design Premium per Tag e Rettangoli (Glassmorphism) */
.tag-rect-staging {
  border: 1px solid rgba(255, 255, 255, 0.8) !important;
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.5) !important;
  background: rgba(255, 255, 255, 0.05) !important;
  border-radius: 4px;
  animation: rectPulse 2s infinite ease-in-out;
}

@keyframes rectPulse {
  0% {
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 18px rgba(255, 255, 255, 0.7);
  }
  100% {
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
  }
}

.photo-tag-label {
  position: absolute;
  bottom: -28px;
  left: 50%;
  transform: translateX(-50%) scale(var(--lightbox-label-counter-scale, 1));
  transform-origin: center top;
  background: rgba(15, 23, 42, 0.6) !important; /* Scuro e semi-trasparente */
  -webkit-backdrop-filter: blur(8px) !important;
  backdrop-filter: blur(8px) !important; /* Sfocatura sfondo Premium */
  color: #ffffff !important;
  padding: 6px 14px !important;
  border-radius: 20px !important; /* Pillola completa */
  font-size: 0.85rem !important;
  font-weight: 500 !important;
  white-space: nowrap;
  opacity: 0;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25) !important;
  border: 1px solid rgba(255, 255, 255, 0.1) !important;
  transition:
    transform 0.2s ease,
    opacity 0.2s ease !important;
  pointer-events: none;
  -webkit-user-select: none !important;
  user-select: none !important;
}

.photo-tag-label:hover {
  transform: translateX(-50%)
    scale(calc(var(--lightbox-label-counter-scale, 1) * 1.05));
}

.tag-bounding-box.active .photo-tag-label,
.tag-bounding-box:hover .photo-tag-label {
  opacity: 1;
}

/* Lightbox Toolbar */
.lightbox-toolbar {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 40px;
  z-index: 1001;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.lightbox-nav {
  width: 44px;
  height: 44px;
  border-radius: 50% !important;
}

.admin-delete-btn,
.admin-delete-tag-btn,
.lightbox-nav-tags {
  position: relative;
  width: 44px;
  height: 44px;
  border-radius: 50% !important;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
  background: transparent;
  padding: 0;
}

.lightbox-nav-tags {
  background-color: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.3);
}

.admin-delete-tag-btn {
  background-color: rgba(148, 163, 184, 0.15); /* Slate 400 */
  color: #cbd5e1;
  border-color: rgba(148, 163, 184, 0.3);
}

.admin-delete-btn {
  background-color: rgba(244, 63, 94, 0.1); /* Rose 500 */
  color: #fb7185;
  border-color: rgba(244, 63, 94, 0.2);
}

.lightbox-nav-tags:hover {
  background-color: #4f46e5 !important;
  color: white !important;
  transform: scale(1.1);
}

.admin-delete-tag-btn:hover {
  background-color: #94a3b8 !important;
  color: white !important;
  transform: scale(1.05); /* Softer scale */
}

.admin-delete-btn:hover {
  background-color: #f43f5e !important;
  color: white !important;
  transform: scale(1.05); /* Softer scale */
}

/* Sidebar Specific action buttons overrides */
#lightbox-sidebar .admin-action-buttons-row {
  display: flex;
  gap: 12px;
  width: 100%;
}

#lightbox-sidebar .admin-delete-tag-btn,
#lightbox-sidebar .admin-delete-btn {
  flex: 1;
  height: auto;
  padding: 12px 10px;
  border-radius: 8px !important;
  justify-content: center;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  text-align: center;
}

#lightbox-sidebar .admin-delete-tag-btn span,
#lightbox-sidebar .admin-delete-btn span {
  font-size: 18px;
}

.admin-tag-action-btn {
  width: 100%;
  padding: 8px;
  border-radius: 6px;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  color: #475569;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
  box-sizing: border-box;
}

.admin-tag-action-btn:hover {
  background: #e2e8f0;
  color: #1e293b;
}

/* Save Tags Button */
.lb-save-tags-container {
  padding: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  flex-shrink: 0;
}

.btn-save-tags {
  width: 100%;
  padding: 12px;
  background: #10b981;
  color: white;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background 0.2s;
}

.btn-save-tags:hover {
  background: #059669;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition:
    background-color 0.4s ease,
    opacity 0.3s ease;
}

/* Modalità Immersiva: nasconde controlli e sidebar in modo DISTRUTTIVO */
/* Triplo selettore per garantire la precedenza su ogni altra regola esistente */
#lightbox.immersive-mode #lightbox-close,
#lightbox.immersive-mode #lightbox-sidebar,
#lightbox.immersive-mode #lightbox-prev,
#lightbox.immersive-mode #lightbox-next,
#lightbox.immersive-mode .lightbox-document-stack-btn,
#lightbox.immersive-mode .lightbox-toolbar,
#lightbox.immersive-mode [id='lightbox-close'],
body #lightbox.immersive-mode #lightbox-close {
  opacity: 0 !important;
  visibility: hidden !important;
  display: none !important;
  pointer-events: none !important;
}

#lightbox-close,
#lightbox-sidebar,
#lightbox-prev,
#lightbox-next,
.lightbox-document-stack-btn,
.lightbox-toolbar {
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* Sidebar in Lightbox */
#lightbox-sidebar {
  width: 420px;
  background: rgba(241, 245, 249, 0.75);
  -webkit-backdrop-filter: blur(25px);
  backdrop-filter: blur(25px);
  border-left: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
  /* transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease !important; */
}

/* Mobile Fixes & Immersive View */
@media (max-width: 900px) {
  #lightbox-content {
    width: 100vw !important;
    height: 100vh !important;
    max-width: none !important;
    max-height: none !important;
    border-radius: 0 !important;
    margin: 0 !important;
    background: black !important;
    padding: 0 !important;
  }

  #lightbox-viewer {
    padding: 0 !important;
    height: 100dvh !important;
    width: 100dvw !important;
    background: black !important;
    display: block !important;
    overflow: hidden !important; /* Clipper for the scroll container */
    position: relative !important;
  }

  #lightbox-content,
  #lightbox-viewer {
    background: rgba(0, 0, 0, 0.85) !important;
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
  }

  #lightbox-canvas {
    width: 100dvw !important;
    height: 100dvh !important;
    display: flex !important;
    flex-direction: row !important;
    justify-content: flex-start !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    scroll-snap-type: x mandatory !important;
    -webkit-overflow-scrolling: touch !important;
    position: relative !important;
    scroll-behavior: auto !important;
    touch-action: pan-x !important;
  }

  /* Zoomed state: lock the carousel, JS handles all gestures */
  #lightbox-canvas.is-zoomed {
    overflow-x: hidden !important;
    touch-action: none !important;
  }

  #lightbox-canvas::-webkit-scrollbar {
    display: none !important;
  }

  #lightbox-image-area {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #lightbox-img {
    max-width: 100vw !important;
    max-height: 100vh !important;
    width: auto !important;
    height: auto !important;
    object-fit: contain;
  }

  /* Nascondi frecce e tasto chiusura su mobile (si usa lo swipe e pull-to-dismiss) */
  #lightbox-prev,
  #lightbox-next,
  #lightbox-close {
    display: none !important;
  }

  .lightbox-document-stack-btn {
    position: fixed;
    top: max(14px, env(safe-area-inset-top));
    left: 14px;
    min-height: 40px;
    padding: 7px 10px;
  }

  .lightbox-document-pages-dialog {
    width: calc(100vw - 20px);
    max-height: calc(100dvh - 20px);
    border-radius: 18px;
  }

  .lightbox-document-pages-shell {
    max-height: calc(100dvh - 20px);
  }

  .lightbox-document-pages-header {
    padding: 16px;
  }

  .lightbox-document-pages-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    padding: 12px;
  }

  .lightbox-document-page-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  /* Sidebar come overlay a scomparsa con PEEK infallibile */
  #lightbox-sidebar {
    position: fixed;
    left: 0;
    width: 100%;
    /* Nascondiamo la barra spingendola in basso col transform, invece che col top. 
           L'altezza base è fissa, o la calcoliamo al 70vh */
    height: 70dvh;
    top: auto;
    bottom: 0;
    z-index: 2060;
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(15, 23, 42, 0.4);
    -webkit-backdrop-filter: blur(25px);
    backdrop-filter: blur(25px);
    border-radius: 30px 30px 0 0;
    color: white;

    box-sizing: border-box; /* IMPEDISCE AL PADDING DI SFASARE L'ALTEZZA */
    transform: translateY(calc(100% - 70px)); /* Mostra solo l'handle di base */
    touch-action: pan-y;
    transition:
      transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
      background 0.4s,
      opacity 0.3s ease;
    box-shadow: 0 -15px 50px rgba(0, 0, 0, 0.5);
    padding-top: 30px;
    padding-bottom: calc(env(safe-area-inset-bottom, 20px) + 20px) !important;
    overflow-y: hidden; /* Nascondi scroll quando è chiusa */
  }

  /* Cuscino invisibile per garantire lo scroll completo fino all'ultimo bottone */
  #lightbox-sidebar::after {
    content: '';
    display: block;
    width: 100%;
    min-height: 60px; /* Spazio per la navigation bar nativa del telefono */
    flex-shrink: 0;
  }

  /* Sidebar Pull Handle */
  #lightbox-sidebar::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
  }

  /* Testo e icone chiari nella sidebar mobile scura */
  #lightbox-sidebar h3,
  #lightbox-sidebar h2,
  #lightbox-sidebar .lb-tag-name,
  #lightbox-sidebar #desc-text {
    color: white !important;
    -webkit-user-select: text;
    user-select: text;
  }

  #lightbox-sidebar h3,
  #lightbox-sidebar h2 {
    -webkit-user-select: none !important;
    user-select: none !important;
  }

  #lightbox-sidebar .lb-tag-item:hover {
    background: rgba(255, 255, 255, 0.1) !important;
  }

  /* Classe per mostrare la sidebar APERTA */
  #lightbox.mobile-info-active #lightbox-sidebar {
    background: rgba(15, 23, 42, 0.9) !important;
    overflow-y: auto !important;
    transform: translateY(
      0
    ); /* Rimossa !important per permettere il drag giù */
    opacity: 1 !important;
  }

  /* Toolbar sopra se necessaria, ma tipicamente nascosta */
  .lightbox-toolbar {
    bottom: auto;
    top: 70px;
    background: rgba(15, 23, 42, 0.85);
    opacity: 0.5; /* Più discreta */
  }

  /* Native Slide - Each takes full viewport */
  .carousel-slide-mobile {
    width: 100dvw !important;
    min-width: 100dvw !important;
    max-width: 100dvw !important;
    height: 100dvh !important;
    display: flex !important;
    align-items: center;
    justify-content: center;
    flex: 0 0 100dvw !important;
    scroll-snap-align: center !important;
    scroll-snap-stop: always !important; /* Force single image pagination */
    position: relative !important;
    overflow: hidden !important;
  }

  .image-tag-wrapper {
    max-width: 100vw;
    max-height: 100dvh;
  }

  .image-tag-wrapper img {
    max-width: 100%;
    max-height: 100dvh;
    object-fit: contain;
    transition: none !important;
  }
}

/* Hide AI Chat and scroll-to-top buttons when lightbox is open to avoid overlapping */
body.lightbox-open #ai-chat-fab,
body.lightbox-open .scroll-top-btn,
body.lightbox-open .mobile-index-fab,
body.lightbox-open .mobile-index-overlay {
  display: none !important;
}

/* =========================================
   IMMERSIVE MODE - STATO GLOBALE
   ========================================= */
body.immersive-active #lightbox-close,
body.immersive-active .lightbox-toolbar,
body.immersive-active #lightbox-prev,
body.immersive-active #lightbox-next,
body.immersive-active .lightbox-document-stack-btn,
body.immersive-active #lightbox-sidebar {
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  transform: translateY(110%) !important;
  transition: all 0.3s ease !important;
}