/* styles.css */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: "Segoe UI", Roboto, sans-serif;
  background-color: #121212;
  color: #fff;
  margin: 0;
  transition: background-color 0.4s, color 0.4s;
}

body:not(.dark-mode) {
  background-color: #ffffff;
  color: #333;
}

/* Light mode logo styles */
body:not(.dark-mode) .logo-main {
  color: #000;
}

body:not(.dark-mode) .logo-subtitle {
  color: #333;
  opacity: 0.8;
}
/* Sticky top bar - Contains header, folder controls, and filter options */
#topBar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: inherit;
  padding: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  border-bottom: 1px solid #444;
  gap: 12px;
}

@media (max-width: 1200px) {
  #topBar {
    padding: 6px;
    gap: 10px;
  }
  
  #topBar h1 {
    font-size: 1.3rem;
  }
  
  .logo-main {
    font-size: 2rem;
  }
  
  .logo-subtitle {
    font-size: 0.65rem;
  }
}

@media (max-width: 768px) {
  #topBar {
    padding: 4px;
    gap: 6px;
    justify-content: center;
  }
  
  #topBar h1 {
    font-size: 1.2rem;
    width: 100%;
    text-align: center;
  }
  
  .logo-container {
    width: 100%;
    align-items: center;
    text-align: center;
  }
  
  .logo-main {
    font-size: 1.5rem;
  }
  
  .logo-subtitle {
    font-size: 0.6rem;
  }
}

#topBar h1 {
  margin: 0;
  font-size: 1.5rem;
  white-space: nowrap;
}

/* Logo styles */
.logo-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin: 0;
}

.logo-main {
  font-size: 2.5rem;
  font-weight: bold;
  letter-spacing: 0.15em;
  line-height: 1;
  margin: 0;
  font-family: Arial, sans-serif;
}

.logo-subtitle {
  font-size: 0.75rem;
  font-weight: normal;
  letter-spacing: 0.05em;
  margin-top: -2px;
  opacity: 0.9;
  font-family: "Segoe UI", Roboto, sans-serif;
}

.controls-group {
  display: flex;
  align-items: center;
  gap: 12px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

@media (max-width: 1200px) {
  .controls-group {
    gap: 10px;
  }
}

@media (max-width: 768px) {
  .controls-group {
    gap: 6px;
    justify-content: center;
    width: 100%;
  }
}

.searchControls {
  display: flex;
  align-items: center;
  margin: 0;
  width: 200px;
}

.search-wrapper {
  position: relative;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 8px;
  top: 50%;
  transform: translateY(-50%);
  color: #666;
  pointer-events: none;
}

.search-input {
  width: 100%;
  background-color: #333;
  color: #fff;
  border: 1px solid #555;
  border-radius: 4px;
  padding: 6px 28px;
  font-size: 0.9rem;
  transition: all 0.3s;
}

.search-input:focus {
  outline: none;
  border-color: #9b77ff;
  box-shadow: 0 0 0 2px rgba(155, 119, 255, 0.2);
}

.search-clear {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #666;
  color: #fff;
  display: none;
  transition: opacity 0.3s ease-in-out;
  pointer-events: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 10px;
  transition: background-color 0.3s;
}

.search-clear:hover {
  background: #888;
}

.search-input:not(:placeholder-shown) + .search-clear {
  display: flex;
}

body:not(.dark-mode) .search-clear {
  background: #999;
  color: #fff;
}

body:not(.dark-mode) .search-clear:hover {
  background: #777;
}

body:not(.dark-mode) .search-input {
  background-color: #fff;
  color: #333;
  border-color: #ccc;
}

body:not(.dark-mode) .search-icon {
  color: #999;
}

.fileControls {
  display: flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-start;
  flex-wrap: wrap;
}

.pageControls {
  display: flex;
  align-items: center; 
  gap: 8px;
  justify-content: center;
  flex-wrap: nowrap;
}

@media (max-width: 768px) {
  .searchControls {
    width: 100%;
    max-width: none;
    order: -1;
  }

  .fileControls, .pageControls {
    width: auto;
    gap: 6px;
  }
}

/* Common button styles - Consistent styling for all interactive buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: #333;
  color: #fff;
  border: 1px solid #555;
  border-radius: 4px;
  padding: 6px 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: background-color 0.3s, color 0.3s;
}

@media (max-width: 768px) {
  .btn {
    padding: 5px 7px;
    font-size: 0.85rem;
  }
}

.btn:hover {
  background-color: #444;
}

/* Pagination controls - Styling for page navigation buttons */
.prevPage, .nextPage {
  padding: 6px 10px;
}

/* Filter toggles - Custom styled checkboxes as toggle buttons for content filtering */
.checkbox-group {
  display: inline-flex;
  gap: 5px;
  align-items: center;
}

.checkbox-group label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 12px;
  border: 1px solid #555;
  border-radius: 4px;
  background-color: #333;
  color: #fff;
  cursor: pointer;
  transition: background-color 0.3s, color 0.3s;
}

/* Hide default checkbox appearance */
.checkbox-group label input {
  display: none;
}

/* Use :has() to style checked state (supported in modern browsers) */
.checkbox-group label:has(input:checked) {
  background-color: #555;
  color: #fff;
}

/* Dropdown menu styles */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: #333;
  color: #fff;
  border: 1px solid #555;
  border-radius: 4px;
  padding: 6px 8px;
  cursor: pointer;
  transition: background-color 0.3s;
}

#subfolderToggle {
  min-width: 48px;
}

#subfolderToggle .fa-sitemap {
  color: #666;
  transition: color 0.3s;
}

#subfolderToggle .fa-sitemap.active {
  color: #9b77ff;
}

#subfolderToggle span {
  min-width: 16px;
  margin: 0 2px;
  color: #9b77ff;
}

.dropdown-content {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #333;
  min-width: 160px;
  border: 1px solid #555;
  border-radius: 4px;
  padding: 8px 0;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
  transition: visibility 0s linear 0.1s, opacity 0.1s linear;
  pointer-events: all;
}

@media (max-width: 768px) {
  .dropdown-content {
    position: fixed;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 300px;
  }
}

.dropdown.active .dropdown-content {
  visibility: visible;
  opacity: 1;
  transition-delay: 0s;
  pointer-events: auto;
}

.dropdown-content label {
  display: flex;
  align-items: center;
  padding: 8px 16px;
  cursor: pointer;
  transition: all 0.3s;
  color: #fff;
  position: relative;
}

.dropdown-content label:hover {
  background-color: #444;
}

/* Type filter and selection option styles */
.dropdown-content label.selection-option,
.dropdown-content label.filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.dropdown-content label.selection-option:hover,
.dropdown-content label.filter-option:hover {
  background-color: #444;
}

.dropdown-content label.selection-option i,
.dropdown-content label.filter-option i {
  width: 16px;
  text-align: center;
}

.dropdown-content label.selection-option span,
.dropdown-content label.filter-option span {
  flex: 1;
}

.dropdown-content label.filter-option i {
  opacity: 0;
  transition: opacity 0.3s;
}

.dropdown-content label.filter-option.active i {
  opacity: 1;
  color: #9b77ff;
}

/* Sort and items options styles */
.dropdown-content .sort-option,
.dropdown-content .items-option,
.dropdown-content .subfolder-option {
  padding-left: 36px;
}

/* Items per page dropdown specific styles */
.items-option .items-check {
  position: absolute;
  left: 12px;
  visibility: hidden;
  color: #9b77ff;
}

/* Subfolder dropdown specific styles */
.subfolder-option .subfolder-check {
  position: absolute;
  left: 12px;
  visibility: hidden;
  color: #9b77ff;
}

/* Sort dropdown specific styles */
.dropdown-content .sort-option i {
  position: absolute;
  left: 12px;
  opacity: 0;
  transition: opacity 0.3s;
}

.dropdown-content .sort-option[data-active="true"] i {
  opacity: 1;
  color: #9b77ff;
}

.dropdown-divider {
  height: 1px;
  background-color: #555;
  margin: 8px 0;
}

.sort-direction-wrapper {
  width: 100%;
}

.dropdown-content .sort-direction {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 8px 16px;
  border: none;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: all 0.3s;
  outline: none;
  margin: 0;
  position: relative;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.dropdown-content .sort-direction:hover {
  background-color: #444;
}

.dropdown-content .sort-direction:active {
  background-color: #555;
}

.dropdown-content .sort-direction i {
  width: 16px;
  text-align: center;
  transition: transform 0.3s;
  pointer-events: none;
}

.dropdown-content .sort-direction span {
  flex: 1;
  pointer-events: none;
}

.dropdown-content .sort-direction-hit-area {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  cursor: pointer;
}

body:not(.dark-mode) .dropdown-content .sort-direction {
  color: #333;
}

body:not(.dark-mode) .dropdown-content .sort-direction:hover {
  background-color: #f0f0f0;
}

body:not(.dark-mode) .dropdown-content .sort-direction:active {
  background-color: #e0e0e0;
}

.dropdown-content .sort-direction[data-direction="desc"] i {
  transform: rotate(180deg);
}

.dropdown-content .sort-direction * {
  pointer-events: none;
}

.dropdown-content .sort-direction-hit-area {
  pointer-events: auto;
}

.dropdown-content .sort-direction:focus {
  outline: none;
  background-color: #555;
}

body:not(.dark-mode) .dropdown-content .sort-direction:focus {
  background-color: #e0e0e0;
}

.dropdown-content .sort-direction:focus {
  outline: none;
  background-color: #555;
}

body:not(.dark-mode) .dropdown-content .sort-direction:focus {
  background-color: #e0e0e0;
}

.dropdown-content .sort-direction i {
  transition: transform 0.3s;
}

.dropdown-content .sort-direction.desc i {
  transform: rotate(180deg);
}

/* Light theme styles for dropdown */
body:not(.dark-mode) .dropdown-btn {
  background-color: #fff;
  color: #333;
  border-color: #ccc;
}

body:not(.dark-mode) .dropdown-content {
  background-color: #fff;
  border-color: #ccc;
}

body:not(.dark-mode) .dropdown-content label {
  color: #333;
}

body:not(.dark-mode) .dropdown-content label:hover {
  background-color: #f0f0f0;
}

/* Dropdown menu - Styling for items per page selector */
select {
  background: #333;
  color: white;
  border: 1px solid #555;
  border-radius: 4px;
  padding: 8px;
  cursor: pointer;
}

/* Size control styles */
.size-control {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 10px;
}

@media (max-width: 768px) {
  .size-control {
    padding: 0 5px;
  }
  
  .size-slider {
    width: 80px;
  }
}

.size-slider {
  width: 100px;
  height: 4px;
  -webkit-appearance: none;
  background: #555;
  border-radius: 2px;
  outline: none;
}

.size-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #9b77ff;
  cursor: pointer;
  border: none;
}

.size-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #9b77ff;
  cursor: pointer;
  border: none;
}

#sizeValue {
  font-size: 0.8rem;
  color: #888;
  min-width: 50px;
}

/* Main content grid - Responsive layout for displaying asset previews */
#viewerContainer {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(var(--tile-size, 220px), 1fr));
  gap: 16px;
  padding: 20px;
  margin-top: 60px;
}

.model-tile {
  border: 1px solid #444;
  border-radius: 6px;
  background: #2a2a2a;
  text-align: center;
  padding: 12px;
  /* Explicitly specify which properties to transition, excluding size/layout properties */
  transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
              box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 5px rgba(0,0,0,0.3);
  position: relative;
  cursor: default;
  will-change: transform, opacity;
  animation: tileAppear 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  /* Added flex layout and aspect ratio - ensure it's strictly maintained */
  display: flex;
  flex-direction: column;
  aspect-ratio: 3 / 4;
  /* Add CSS containment to improve performance */
  contain: layout paint;
  /* Additional fixes for proportional consistency */
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  /* Force hardware acceleration to improve smoothness */
  transform: translateZ(0);
  /* Ensure consistent height for all tiles */
  height: auto;
}

/* Force proper tile dimensions when inside the grid to ensure proportions */
#viewerContainer > .model-tile {
  width: 100%;
  height: auto;
}

@keyframes tileAppear {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.model-tile.selected {
  border-color: #9b77ff;
  box-shadow: 0 0 0 2px #9b77ff;
}

.selection-indicator {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: transparent;
  border: 2px solid #666;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
}

.selection-indicator:hover {
  border-color: #9b77ff;
  transform: scale(1.1);
}

.model-tile.selected .selection-indicator {
  background: #9b77ff;
  border-color: #fff;
}

.selection-indicator i {
  opacity: 0;
  transform: scale(0);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.model-tile.selected .selection-indicator i {
  opacity: 1;
  transform: scale(1);
}

.placeholder {
  background: #3a3a3a;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 0.9rem;
  width: 100%;
  flex-grow: 1;
  overflow: hidden;
  border-radius: 4px;
}

.model-tile:hover {
  background: #333;
  transform: translateY(-2px);
}

.model-name, .video-name {
  font-size: 0.9rem;
  margin-top: 8px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding: 0 4px;
  line-height: 1.3;
  min-height: 1.3em;
}

.file-info {
  font-size: 0.8rem;
  color: #888;
  margin-top: 4px;
  text-align: left;
}

.sort-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sort-select {
  background: #333;
  color: white;
  border: 1px solid #555;
  border-radius: 4px;
  padding: 8px;
  cursor: pointer;
  font-size: 0.9rem;
}

.sort-direction-btn {
  background: #333;
  border: 1px solid #555;
  color: white;
  border-radius: 4px;
  padding: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
}

body:not(.dark-mode) .sort-select,
body:not(.dark-mode) .sort-direction-btn {
  background: #fff;
  color: #333;
  border-color: #ccc;
}

/* All preview tiles responsive size */
model-viewer, .three-viewer, .video-preview {
  border-radius: 4px;
  background-color: #3a3a3a;
  --poster-color: transparent;
  position: relative;
  width: 100%;
  flex-grow: 1;
  overflow: hidden;
}

/* Ensure Three.js canvas fills its container */
.three-viewer canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
  max-width: 100% !important;
  max-height: 100% !important;
}

#fullscreenViewer .three-viewer canvas {
  width: 100% !important;
  height: 100% !important;
  max-width: 100% !important;
  max-height: 100% !important;
}

.video-preview {
  position: relative;
}

.video-preview video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.scrub-bar-container {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 20px;
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.scrub-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background: rgba(255, 255, 255, 0.2);
  pointer-events: none;
}

.time-marker {
  position: absolute;
  top: 0;
  right: 0;
  background: rgba(200, 200, 200, 0.8);
  padding: 2px 4px;
  font-size: 12px;
  color: black;
  transform: translateX(50%);
  border-radius: 2px;
}

/* Audio preview tiles - Custom styling for audio file previews with controls */
.audio-tile {
  display: flex;
  flex-direction: column;
  width: 100%;
  flex-grow: 1;
  background-color: #2a2a2a;
  border: 1px solid #444;
  border-radius: 4px;
  overflow: hidden;
}

.audio-header {
  background-color: #333;
  color: #fff;
  padding: 8px;
  text-align: center;
  font-size: 1.2rem;
  border-bottom: 1px solid #555;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.audio-controls {
  flex-grow: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #2a2a2a;
  padding: 1px;
}

.audio-controls audio {
  width: 100%;
  background: transparent;
}

/* Make native dark-mode audio controls appear white */
body.dark-mode .audio-controls audio::-webkit-media-controls-panel {
  background-color: #9c9c9c !important;
  filter: invert(1) hue-rotate(180deg);
}

/* Image preview tiles - Styling for image thumbnails and full-size views */
.image-preview {
  width: 100%;
  flex-grow: 1;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
}

.image-preview img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

/* Fullscreen view - Overlay and controls for expanded asset viewing */
.fullscreen-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(0,0,0,0.6);
  border: none;
  color: white;
  padding: 6px;
  border-radius: 4px;
  cursor: pointer;
  z-index: 10;
}

/* Fullscreen info panel */
.fullscreen-info {
  position: fixed;
  bottom: 20px;
  left: 20px;
  max-width: 300px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 12px 15px;
  z-index: 1002;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: opacity 0.3s ease;
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.fullscreen-filename {
  font-size: 1.1rem;
  font-weight: bold;
}

.fullscreen-details {
  font-size: 0.85rem;
  color: #ccc;
}

.fullscreen-path {
  font-size: 0.75rem;
  color: #999;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 280px;
}

body:not(.dark-mode) .fullscreen-info {
  background: rgba(255, 255, 255, 0.85);
  color: #333;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

body:not(.dark-mode) .fullscreen-details {
  color: #555;
}

body:not(.dark-mode) .fullscreen-path {
  color: #777;
}

#fullscreenOverlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0,0,0,0.9);
  z-index: 1000;
  display: none;
}

#fullscreenContent {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  pointer-events: none;
}

/* Navigation areas for fullscreen view */
.fullscreen-nav {
  position: fixed;
  top: 0;
  width: 100px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  color: white;
  opacity: 0;
  transition: opacity 0.3s;
  cursor: pointer;
  z-index: 1001;
  pointer-events: auto;
}

.fullscreen-nav:hover {
  opacity: 1;
}

.fullscreen-nav i {
  font-size: 24px;
}

#prevNav {
  left: 0;
}

#nextNav {
  right: 0;
}


/* Tooltip styles */
[data-tooltip] {
  position: relative;
}

[data-tooltip]:before {
  content: attr(data-tooltip);
  position: absolute;
  top: 120%;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 10px;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  border-radius: 4px;
  font-size: 12px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  z-index: 1002;
}

[data-tooltip]:hover:before {
  opacity: 1;
  visibility: visible;
}

#fullscreenViewer, #fullscreenVideo {
  pointer-events: auto;
}

#fullscreenVideo {
  display: block;
  width: 50%;
  height: auto;
  max-width: 50%;
  max-height: 100%;
  object-fit: contain;
  margin: auto;
}

@media (max-width: 768px) {
  #fullscreenVideo {
    width: 90%;
    max-width: 90%;
  }
}

#fullscreenViewer {
  width: 50%;
  height: 75%;
  max-width: 50%;
  max-height: 75vh;
  margin: auto;
}

.fullscreen-audio {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(42, 42, 42, 0.9);
  border-radius: 8px;
}

.fullscreen-audio-header {
  font-size: 2rem;
  color: #fff;
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 15px;
}

.fullscreen-audio-controls {
  width: 100%;
  max-width: 800px;
  padding: 20px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
}

.fullscreen-audio-controls audio {
  width: 100%;
}

/* Font Preview Styles */
.font-preview {
  width: 100%;
  flex-grow: 1;
  display: flex;
  flex-direction: column; /* Allow button to be positioned below text */
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  font-size: 16px; /* Default preview font size */
  line-height: 1.4;
  text-align: center;
  padding: 10px;
  box-sizing: border-box; /* Include padding in height/width */
  word-wrap: break-word; /* Ensure long words don't overflow */
  border-radius: 4px;
  background-color: #3a3a3a;
}

.font-preview div { /* Style for the text container itself */
  max-height: 100%;
  overflow-y: auto; /* Allow scrolling for long preview texts */
}

.custom-text-btn {
  position: absolute;
  bottom: 5px; /* Adjust to be above file info if file info is outside font-preview div */
  left: 5px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
  border: none;
  border-radius: 4px;
  width: 28px; /* Smaller button */
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 2; /* Ensure it's above the text */
  font-size: 14px; /* Smaller icon */
}

.custom-text-btn:hover {
  background: rgba(0, 0, 0, 0.7);
}

.fullscreen-font-display {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  padding: 20px;
  box-sizing: border-box;
  overflow: auto; /* Allow scrolling for very large text or small screens */
}

.fullscreen-font-display p {
  font-size: 2.5em; /* Default large font size for fullscreen */
  text-align: center;
  word-break: break-word;
  margin: 0; /* Remove default paragraph margins */
  color: var(--text-color); /* Ensure text color matches theme */
}

/* Modal Base Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: auto;
  background-color: rgba(0, 0, 0, 0.8);
  justify-content: center;
  align-items: center;
}

.modal-content {
  background-color: #2a2a2a;
  margin: auto;
  padding: 30px;
  border-radius: 8px;
  position: relative;
  max-width: 90%;
  max-height: 90vh;
  overflow-y: auto;
}

body:not(.dark-mode) .modal-content {
  background-color: #fff;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.close-button {
  position: absolute;
  top: 10px;
  right: 15px;
  font-size: 28px;
  font-weight: bold;
  color: #aaa;
  cursor: pointer;
  line-height: 1;
}

.close-button:hover,
.close-button:focus {
  color: #fff;
}

body:not(.dark-mode) .close-button {
  color: #666;
}

body:not(.dark-mode) .close-button:hover,
body:not(.dark-mode) .close-button:focus {
  color: #000;
}

/* Custom Text Modal Styles */
#customTextModal .modal-content {
  max-width: 500px; /* Specific width for this modal */
}

#customTextModal .input-container {
  margin-bottom: 15px;
}

#customTextModal textarea {
  width: 100%;
  min-height: 100px;
  padding: 10px;
  border-radius: 4px;
  border: 1px solid #555; /* Dark theme border */
  background-color: #333; /* Dark theme background */
  color: #fff; /* Dark theme text */
  resize: vertical;
}

body:not(.dark-mode) #customTextModal textarea {
  border: 1px solid #ccc; /* Light theme border */
  background-color: #fff; /* Light theme background */
  color: #333; /* Light theme text */
}

/* Controls row for better organization */
#customTextModal .controls-row {
  margin-bottom: 15px;
}

/* Icon button group for preset buttons */
#customTextModal .icon-button-group {
  display: flex;
  gap: 10px;
  margin-bottom: 15px;
}

#customTextModal .icon-button-group button {
  width: 40px;
  height: 40px;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #444; /* Dark theme button */
  color: #fff;
  border: 1px solid #555;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
}

body:not(.dark-mode) #customTextModal .icon-button-group button {
  background-color: #f0f0f0; /* Light theme button */
  color: #333;
  border: 1px solid #ccc;
}

#customTextModal .icon-button-group button:hover {
  background-color: #555; /* Dark theme hover */
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

body:not(.dark-mode) #customTextModal .icon-button-group button:hover {
  background-color: #e0e0e0; /* Light theme hover */
}

#customTextModal .icon-button-group button i {
  font-size: 18px;
}

/* Font size control with icon */
#customTextModal .font-size-control {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

#customTextModal .font-size-control label {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #ccc;
  width: 30px;
}

#customTextModal .font-size-value-display {
  font-size: 0.9em;
  color: #ccc;
  min-width: 40px;
  text-align: center;
}

/* Icon checkboxes for default settings */
#customTextModal .modal-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
}

#customTextModal .default-options {
  display: flex;
  gap: 15px;
}

#customTextModal .icon-checkbox-label {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  padding: 5px 8px;
  border-radius: 4px;
  transition: background-color 0.2s;
}

#customTextModal .icon-checkbox-label:hover {
  background-color: #444;
}

body:not(.dark-mode) #customTextModal .icon-checkbox-label:hover {
  background-color: #f0f0f0;
}

#customTextModal .icon-checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

#customTextModal .icon-checkbox-label i {
  font-size: 14px;
  color: #888;
  transition: color 0.2s;
}

#customTextModal .icon-checkbox-label:has(input[type="checkbox"]:checked) i {
  color: #9b77ff;
}

#customTextModal .apply-btn {
  padding: 8px 15px;
  min-width: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

#customTextModal .apply-btn i {
  font-size: 14px;
}

/* Font Size Controls */
.font-size-control {
  margin: 15px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.font-size-control label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.9em;
}

.font-size-slider {
  width: 100%;
  height: 5px;
  -webkit-appearance: none;
  background: #555;
  border-radius: 3px;
  outline: none;
}

.font-size-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #9b77ff;
  cursor: pointer;
  border: none;
}

.font-size-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #9b77ff;
  cursor: pointer;
  border: none;
}

body:not(.dark-mode) .font-size-slider {
  background: #ccc;
}

/* Fullscreen font size control */
.fullscreen-font-size-control {
  position: absolute;
  bottom: 20px;
  right: 20px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 10px 15px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 1002;
}

body:not(.dark-mode) .fullscreen-font-size-control {
  background: rgba(255, 255, 255, 0.85);
  color: #333;
}

.fullscreen-font-size-control .font-size-slider {
  width: 150px;
}

body:not(.dark-mode) .fullscreen-audio {
  background: rgba(255, 255, 255, 0.9);
}

body:not(.dark-mode) .fullscreen-audio-header {
  color: #333;
}

body:not(.dark-mode) .fullscreen-audio-controls {
  background: rgba(0, 0, 0, 0.1);
}

/* Preset Text Button Styles */
#customTextModal .icon-button-group {
  flex-wrap: wrap;
  gap: 10px;
}

.preset-text-btn {
  padding: 8px 12px;
  min-width: 70px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: #444; /* Dark theme background */
  color: #fff; /* Dark theme text */
  border: 1px solid #555;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.preset-text-btn:hover {
  background-color: #555; /* Dark theme hover */
  transform: translateY(-2px);
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

body:not(.dark-mode) .preset-text-btn {
  background-color: #f0f0f0; /* Light theme background */
  color: #333; /* Light theme text */
  border: 1px solid #ccc;
}

body:not(.dark-mode) .preset-text-btn:hover {
  background-color: #e0e0e0; /* Light theme hover */
}

/* All Caps toggle */
#customTextModal .default-options {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
}

.all-caps-icon {
  font-family: "Segoe UI", sans-serif; /* Or a specific font if you prefer */
  font-size: 14px; /* Adjust as needed */
  font-weight: bold;
  color: #888; /* Default color (Aa) */
  transition: color 0.2s;
  padding: 0 2px; /* Small padding if needed */
  line-height: 1; /* Ensure it aligns well */
  display: inline-block;
  min-width: 20px; /* Ensure it has some width */
  text-align: center;
}

#customTextModal .icon-checkbox-label:has(input[type="checkbox"]:checked) .all-caps-icon {
  color: #9b77ff; /* Purple color when checked (AA) */
}

@media (max-width: 768px) {
  #fullscreenViewer {
    width: 90%;
    max-width: 90%;
  }
}

#returnButton {
  position: fixed;
  top: 20px;
  left: 20px;
  background: rgba(0,0,0,0.6);
  border: none;
  color: white;
  padding: 12px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 1001;
}

/* Tree Folder View Panel Styles */
.tree-folder-panel {
  position: fixed;
  top: 60px; /* Below the top bar */
  bottom: 0;
  width: var(--tree-panel-width, 280px); /* Use CSS variable with fallback */
  background-color: #1e1e1e;
  z-index: 90;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease-in-out;
  overflow: hidden;
}

/* Left-side positioning (default) */
.tree-folder-panel.panel-left {
  left: 0;
  border-right: 1px solid #444;
  transform: translateX(-100%); /* Hidden by default */
}

/* Right-side positioning */
.tree-folder-panel.panel-right {
  right: 0;
  border-left: 1px solid #444;
  transform: translateX(100%); /* Hidden by default */
}

/* Panel visibility - Left side */
body.tree-panel-visible .tree-folder-panel.panel-left {
  transform: translateX(0);
}

body.tree-panel-visible .panel-left ~ #viewerContainer {
  margin-left: var(--tree-panel-width, 280px);
  margin-right: 0;
  width: calc(100% - var(--tree-panel-width, 280px));
  transition: margin 0.3s ease-in-out, width 0.3s ease-in-out;
}

/* Panel visibility - Right side */
body.tree-panel-visible .tree-folder-panel.panel-right {
  transform: translateX(0);
}

body.tree-panel-visible .panel-right ~ #viewerContainer {
  margin-right: var(--tree-panel-width, 280px);
  margin-left: 0;
  width: calc(100% - var(--tree-panel-width, 280px));
  transition: margin 0.3s ease-in-out, width 0.3s ease-in-out;
}

.tree-folder-header {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  padding: 10px 15px;
  border-bottom: 1px solid #444;
  background-color: #262626;
}

.tree-folder-header h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: normal;
  color: #fff;
}

.tree-folder-actions {
  display: flex;
  gap: 5px;
}

.tree-btn {
  padding: 4px;
  min-width: 28px;
  min-height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #333;
  border: 1px solid #555;
  border-radius: 4px;
  color: #ccc;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}

/* SVG Icon Styles */
.tree-btn .custom-fa-icon { /* Updated to only target new icons */
  width: 30px; /* Increased size */
  height: 30px; /* Increased size */
}

/* Dark mode SVG styling for new FA-style icons */
body.dark-mode .custom-fa-icon .folder-shape-fa {
  fill: var(--icon-folder-fill-dark, #FEF7FF);
}
body.dark-mode .custom-fa-icon .chevron-overlay-fa {
  stroke: var(--icon-chevron-text-dark, #3C3C3C);
}
body.dark-mode .custom-fa-icon .text-overlay-fa {
  fill: var(--icon-chevron-text-dark, #3C3C3C);
}

/* Light mode SVG styling for new FA-style icons */
body:not(.dark-mode) .custom-fa-icon .folder-shape-fa {
  fill: var(--icon-chevron-text-dark, #3C3C3C) !important; /* Dark folder for light mode */
}
body:not(.dark-mode) .custom-fa-icon .chevron-overlay-fa {
  stroke: var(--icon-folder-fill-dark, #FEF7FF) !important; /* Light chevron for light mode */
}
body:not(.dark-mode) .custom-fa-icon .text-overlay-fa {
  fill: var(--icon-folder-fill-dark, #FEF7FF) !important; /* Light text for light mode */
}

.tree-btn:hover {
  background-color: #444;
  color: #fff;
}

.tree-folder-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: auto;
  padding: 15px 0px 15px 15px; /* Reduced right padding to 5px */
  height: calc(100% - 50px); /* Subtract header height */
}

#folderTreeContainer {
  flex: 1;
  overflow: auto;
  height: 100%;
  display: flex;
  flex-direction: column;
}

#folderTreeContainer ul[role="tree"] {
  width: 100%;
  overflow-x: hidden;
}

.tree-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #777;
  text-align: center;
  padding: 20px;
}

.tree-empty-state i {
  margin-bottom: 15px;
  opacity: 0.6;
}

.tree-empty-state p {
  font-size: 0.9rem;
  margin: 0;
}

.tree-container {
  display: none; /* Hidden initially until folders are loaded */
  height: 100%;
}

.tree-container.has-folders {
  display: block;
}

/* Tree items styling */
.tree-container ul {
  list-style-type: none;
  padding-left: 0;
  margin: 0;
  display: block; /* Ensure vertical stacking */
  width: 100%; /* Force full width */
  flex-direction: column; /* Just to be sure */
  position: relative; /* For proper stacking */
}

.tree-container ul ul {
  padding-left: 16px; /* Indentation for nested levels */
  display: block; /* Ensure vertical stacking */
  max-height: 0; /* Start collapsed for animation */
  overflow: hidden;
  transition: max-height 0.3s ease-in-out; /* Animation for expand/collapse */
  width: 100%; /* Force full width */
  position: relative; /* Ensure proper stacking context */
}

.tree-container li[aria-expanded="true"] > ul {
  max-height: 1000px; /* Large enough value for content */
  display: block; /* Force block display when expanded */
}

.tree-container li {
  padding: 4px 8px; /* Reduced padding for compactness */
  cursor: pointer;
  display: flex;
  align-items: center; 
  gap: 4px; /* Reduced gap */
  border-radius: 3px; /* Slightly smaller radius */
  transition: background-color 0.2s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.85rem; /* Reduced font size */
  line-height: 1.3; /* Adjusted line height */
  height: auto; /* Allow variable height for nested items */
  min-height: 28px; /* Minimum height for consistency */
  box-sizing: border-box;
  flex-direction: row; /* Force horizontal layout for item content */
  width: 100%; /* Take full width */
  position: relative; /* For absolutely positioned children if any */
  flex-wrap: wrap; /* Allow wrapping for deeply nested structures */
}

/* Force the nested ul to appear below its parent li */
.tree-container li > ul {
  flex-basis: 100%; /* Take the full width of the parent li */
  margin-top: 4px; /* Add a small spacing */
  margin-left: 0; /* No left margin, we use padding for indentation */
}

.tree-container li:hover {
  background-color: #333;
}

.tree-container li.selected {
  background-color: #414964; /* Darker blue for better contrast */
  color: #fff;
  font-weight: 500; /* Slightly bolder for selected */
}

.tree-container li .folder-icon,
.tree-container li .chevron-icon {
  width: 14px; /* Slightly smaller icons */
  height: 14px;
  display: inline-flex; /* Better alignment */
  align-items: center;
  justify-content: center;
  color: #888; /* Lighter icon color for dark mode */
  transition: color 0.2s, transform 0.3s ease-in-out; /* Smoother transform for chevron */
  flex-shrink: 0; /* Prevent icons from shrinking */
}

.tree-container li[aria-expanded="true"] > .chevron-icon > i.fa-chevron-right {
  transform: rotate(90deg);
}

/* Ensure chevron-down is used when JS adds it, and it also rotates */
.tree-container li[aria-expanded="true"] > .chevron-icon > i.fa-chevron-down {
  transform: rotate(0deg); /* fa-chevron-down is already pointing down */
}


.tree-container li.selected .folder-icon,
.tree-container li.selected .chevron-icon {
  color: #a991f7; /* Lighter purple for selected icons */
}

.tree-container li .folder-name {
  flex: 1;
  min-width: 0; /* Critical for text-overflow to work properly in flex children */
  overflow: hidden;
  text-overflow: ellipsis;
  margin-left: 2px; /* Small space after icons */
}

/* Tree folder resizer styling */
.tree-folder-resizer {
  display: block;
  position: absolute;
  top: 0;
  width: 5px;
  height: 100%;
  cursor: col-resize;
  background-color: rgba(100, 100, 100, 0.2);
  transition: background-color 0.2s;
  z-index: 91;
}

/* Position the resizer appropriately based on panel side */
.tree-folder-panel.panel-left .tree-folder-resizer {
  right: 0; /* Resizer on right edge for left panel */
}

.tree-folder-panel.panel-right .tree-folder-resizer {
  left: 0; /* Resizer on left edge for right panel */
}

.tree-folder-resizer:hover, 
.tree-folder-resizer.active {
  background-color: rgba(155, 119, 255, 0.4);
}

/* Disable transitions during active resizing to prevent jerky movements */
body.is-resizing .tree-folder-panel,
body.is-resizing #viewerContainer,
body.tile-slider-active #viewerContainer {
  transition: none !important;
}

/* Force hardware acceleration for smoother slider operation */
body.tile-slider-active #viewerContainer {
  will-change: transform;
  transform: translateZ(0);
}

/* Light mode styles */
body:not(.dark-mode) .tree-folder-panel {
  background-color: #f7f7f7; /* Slightly lighter background */
  border-right-color: #e0e0e0; /* Lighter border */
}

body:not(.dark-mode) .tree-folder-header {
  background-color: #e8e8e8;
  border-bottom-color: #ddd;
}

body:not(.dark-mode) .tree-folder-header h3 {
  color: #222; /* Darker text for better contrast */
}

body:not(.dark-mode) .tree-btn {
  background-color: #f0f0f0; /* Lighter button background */
  border-color: #d0d0d0; /* Lighter border */
  color: #555; /* Darker icon color */
}

body:not(.dark-mode) .tree-btn:hover {
  background-color: #e0e0e0; /* Slightly darker hover */
  color: #222;
}

body:not(.dark-mode) .tree-empty-state {
  color: #888; /* Lighter empty state text */
}

body:not(.dark-mode) .tree-container li:hover {
  background-color: #e9e9e9; /* Lighter hover */
}

body:not(.dark-mode) .tree-container li.selected {
  background-color: #d4eaff; /* Lighter blue for selection */
  color: #005a9e; /* Darker blue text for selection */
  font-weight: 500;
}

body:not(.dark-mode) .tree-container li .folder-icon,
body:not(.dark-mode) .tree-container li .chevron-icon {
  color: #777; /* Consistent icon color */
}

body:not(.dark-mode) .tree-container li.selected .folder-icon,
body:not(.dark-mode) .tree-container li.selected .chevron-icon {
  color: #007bff; /* Standard blue for selected icons */
}

.icon-flipped-horizontal {
  transform: scaleX(-1);
}

@media (max-width: 768px) {
  .tree-folder-panel {
    width: 220px; /* Slightly narrower on mobile */
  }
  
  body.tree-panel-visible #viewerContainer {
    margin-left: 0;
    width: 100%;
  }
  
  /* On mobile, overlay the panel instead of pushing content */
  body.tree-panel-visible .tree-folder-panel {
    box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
  }
}

/* Drag and drop styles */
#viewerContainer {
  min-height: calc(100vh - 80px);
  position: relative;
}

#viewerContainer.drag-over::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(255, 255, 255, 0.15);
  border: 3px dashed #888;
  pointer-events: none;
  z-index: 10;
}

#viewerContainer.drag-over::after {
  content: 'Drop files here';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 24px;
  color: #888;
  background-color: rgba(0, 0, 0, 0.7);
  padding: 20px 40px;
  border-radius: 8px;
  pointer-events: none;
  z-index: 11;
}

/* Light theme styles - Color scheme overrides for light mode */
body:not(.dark-mode) {
  background-color: #f0f0f0;
  color: #000;
}

body:not(.dark-mode) .btn {
  background-color: #fff;
  color: #333;
  border-color: #ccc;
}

body:not(.dark-mode) .model-tile {
  background: #fff;
  border-color: #ccc;
}

body:not(.dark-mode) model-viewer,
body:not(.dark-mode) .three-viewer,
body:not(.dark-mode) .video-preview {
  background-color: #e8e8e8;
}

body:not(.dark-mode) .audio-tile {
  background-color: #fff;
  border: 1px solid #ccc;
}

body:not(.dark-mode) .audio-header {
  background-color: #ddd;
  color: #000;
  border-bottom: 1px solid #ccc;
}

body:not(.dark-mode) .audio-controls {
  background-color: #fff;
}

body:not(.dark-mode) .audio-controls audio::-webkit-media-controls-panel {
  background-color: #e0e0e0 !important;
  filter: none;
}

/* Tree panel drag-over state */
.tree-folder-panel.tree-drag-over {
  outline: 2px dashed #9b77ff; /* Highlight color similar to selected items */
  outline-offset: -4px; /* Offset to be inside the panel */
  background-color: rgba(155, 119, 255, 0.1); /* Slight background tint */
}

.tree-folder-panel.tree-drag-over::before {
  content: 'Drop folder here';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.2rem; /* Adjusted font size for panel */
  color: #9b77ff;
  background-color: rgba(30, 30, 30, 0.85); /* Darker background for contrast */
  padding: 15px 25px;
  border-radius: 6px;
  pointer-events: none;
  z-index: 95; /* Ensure it's above tree content but below modal if any */
  text-align: center;
}

/* Light mode adaptation for tree panel drag-over */
body:not(.dark-mode) .tree-folder-panel.tree-drag-over {
  outline-color: #007bff;
  background-color: rgba(0, 123, 255, 0.05);
}

body:not(.dark-mode) .tree-folder-panel.tree-drag-over::before {
  color: #007bff;
  background-color: rgba(240, 240, 240, 0.9);
}


/* New file format support styles */
.model-format-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 20px;
}

.model-format-placeholder i {
  font-size: 48px;
  margin-bottom: 10px;
  opacity: 0.7;
}

.format-label {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 5px;
}

.format-note {
  font-size: 12px;
  opacity: 0.6;
}

/* PDF preview styles */
.pdf-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 10px;
}

.pdf-preview canvas {
  max-width: 100%;
  max-height: 80%;
  object-fit: contain;
}

.pdf-page-info {
  margin-top: 5px;
  font-size: 12px;
  opacity: 0.7;
}

.pdf-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.pdf-placeholder i {
  font-size: 48px;
  margin-bottom: 10px;
  opacity: 0.7;
}

.pdf-controls {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 10;
}

.pdf-download {
  background: rgba(0, 0, 0, 0.7);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
}

.pdf-download:hover {
  background: rgba(0, 0, 0, 0.9);
}

/* Image controls for fullscreen */
.image-controls {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  background: rgba(0, 0, 0, 0.7);
  padding: 10px;
  border-radius: 8px;
}

.image-controls button {
  background: transparent;
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 8px 12px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

.image-controls button:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

/* Unsupported format message */
.unsupported-format-message {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
}

.unsupported-format-message h2 {
  margin: 20px 0 10px;
}

.unsupported-format-message p {
  margin: 10px 0;
  opacity: 0.8;
}

.download-btn {
  margin-top: 20px;
  background: #007bff;
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

.download-btn:hover {
  background: #0056b3;
}

/* Audio visualizer placeholder */
.audio-visualizer {
  width: 100%;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.visualizer-bars {
  width: 300px;
  height: 100px;
  background: linear-gradient(to top, #007bff, #00ff88);
  opacity: 0.3;
  border-radius: 4px;
}

.audio-file-info {
  margin-top: 10px;
  font-size: 14px;
  opacity: 0.7;
}

/* Font display styles */
.fullscreen-font-display {
  width: 90%;
  max-width: 800px;
  text-align: center;
}

.font-text-display {
  margin-bottom: 30px;
  line-height: 1.4;
}

.font-controls {
  margin-bottom: 30px;
}

.font-size-control {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.font-size-control input[type="range"] {
  width: 300px;
}

.font-samples {
  text-align: left;
  background: rgba(255, 255, 255, 0.05);
  padding: 20px;
  border-radius: 8px;
}

.font-samples h3 {
  margin-bottom: 15px;
  text-align: center;
}

.font-samples .sample {
  margin: 10px 0;
  padding: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}

/* Asset placeholder styles */
.asset-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 20px;
}

.asset-placeholder.loading {
  opacity: 0.7;
}

.asset-placeholder.error {
  color: #ff4444;
}

.asset-placeholder i {
  font-size: 32px;
  margin-bottom: 8px;
}

/* Error state for failed asset loads */
.load-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #ff4444;
  padding: 20px;
  text-align: center;
}

.load-error i {
  font-size: 48px;
  margin-bottom: 10px;
}

body:not(.dark-mode) .load-error {
  color: #cc0000;
}

/* Keyboard navigation styles */
.keyboard-focus {
  outline: 3px solid #007bff;
  outline-offset: 2px;
}

body:not(.dark-mode) .keyboard-focus {
  outline-color: #0056b3;
}

/* Keyboard help modal */
.keyboard-help-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.keyboard-help-content {
  background: #1e1e1e;
  color: white;
  padding: 30px;
  border-radius: 8px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

body:not(.dark-mode) .keyboard-help-content {
  background: white;
  color: #333;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.keyboard-help-content h2 {
  margin-bottom: 20px;
  text-align: center;
}

.shortcuts-list {
  display: grid;
  gap: 10px;
}

.shortcut-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 20px;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

body:not(.dark-mode) .shortcut-item {
  border-bottom-color: rgba(0, 0, 0, 0.1);
}

.shortcut-keys {
  font-family: monospace;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.1);
  padding: 4px 8px;
  border-radius: 4px;
  text-align: center;
}

body:not(.dark-mode) .shortcut-keys {
  background: rgba(0, 0, 0, 0.1);
}

.shortcut-desc {
  font-size: 14px;
}

.close-help {
  margin-top: 20px;
  width: 100%;
  padding: 10px;
  background: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 16px;
}

.close-help:hover {
  background: #0056b3;
}

/* Error notification styles */
.error-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  max-width: 400px;
  background: #d32f2f;
  color: white;
  padding: 16px 20px;
  border-radius: 4px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 10001;
  animation: slideIn 0.3s ease-out;
}

.error-notification.warning {
  background: #f57c00;
}

.error-notification.info {
  background: #0288d1;
}

.error-notification.success {
  background: #388e3c;
}

.error-notification i {
  font-size: 20px;
  flex-shrink: 0;
}

.error-message {
  flex: 1;
  font-size: 14px;
  line-height: 1.4;
}

.error-close {
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.8;
  flex-shrink: 0;
}

.error-close:hover {
  opacity: 1;
}

.error-notification.fade-out {
  animation: slideOut 0.3s ease-in;
  opacity: 0;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Light mode error notifications */
body:not(.dark-mode) .error-notification {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

body:not(.dark-mode) .error-notification.warning {
  background: #ff6f00;
}

body:not(.dark-mode) .error-notification.info {
  background: #0277bd;
}

body:not(.dark-mode) .error-notification.success {
  background: #2e7d32;
}

/* Load error styles for tiles */
.load-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #ff5252;
  text-align: center;
  padding: 20px;
  font-size: 14px;
}

.load-error i {
  font-size: 48px;
  margin-bottom: 10px;
  opacity: 0.8;
}

/* Fullscreen error styles */
.fullscreen-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #ff5252;
  text-align: center;
  padding: 40px;
}

.fullscreen-error i {
  margin-bottom: 20px;
  opacity: 0.8;
}

.fullscreen-error small {
  color: #ff8080;
  margin-top: 10px;
  font-size: 14px;
  max-width: 500px;
  word-wrap: break-word;
}

/* Light mode error styles */
body:not(.dark-mode) .load-error,
body:not(.dark-mode) .fullscreen-error {
  color: #d32f2f;
}

body:not(.dark-mode) .fullscreen-error small {
  color: #f44336;
}

/* D.A.V.E Help Tooltip Styles */
.dave-help-tooltip {
  position: fixed;
  z-index: 10001;
  width: 480px;
  max-width: 90vw;
  background: rgba(30, 30, 30, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4), 0 0 80px rgba(0, 120, 255, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.dave-help-tooltip.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dave-help-tooltip.top .tooltip-arrow {
  bottom: -8px;
  top: auto;
  transform: translateX(-50%) rotate(180deg);
}

.tooltip-arrow {
  position: absolute;
  top: -8px;
  left: 40px;
  width: 16px;
  height: 16px;
  background: rgba(30, 30, 30, 0.95);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  transform: translateX(-50%) rotate(45deg);
}

.tooltip-content {
  max-height: 70vh;
  overflow-y: auto;
  padding: 24px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

.tooltip-content::-webkit-scrollbar {
  width: 6px;
}

.tooltip-content::-webkit-scrollbar-track {
  background: transparent;
}

.tooltip-content::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}

.tooltip-content::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.tooltip-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.tooltip-header h3 {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  color: transparent;
}

.tooltip-version {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 500;
}

.tooltip-section {
  margin-bottom: 24px;
}

.tooltip-section:last-of-type {
  margin-bottom: 0;
}

.tooltip-section h4 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 12px 0;
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}

.tooltip-section h4 i {
  font-size: 1rem;
  color: rgba(102, 126, 234, 0.8);
}

.about-description {
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
  margin: 8px 0;
}

.shortcuts-grid {
  display: grid;
  gap: 16px;
}

.shortcut-category {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.shortcut-category h5 {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 8px 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
}

.shortcut-category h5 i {
  font-size: 0.85rem;
  color: rgba(102, 126, 234, 0.7);
}

.shortcut-items {
  display: grid;
  gap: 6px;
}

.shortcut-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  padding: 4px 0;
}

.shortcut-item kbd {
  display: inline-block;
  padding: 3px 8px;
  font-family: 'Monaco', 'Consolas', monospace;
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  color: rgba(255, 255, 255, 0.9);
  min-width: 80px;
  text-align: center;
}

.shortcut-item span {
  color: rgba(255, 255, 255, 0.7);
  flex: 1;
  text-align: right;
}

.features-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
}

.features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

.features-list li i {
  font-size: 0.85rem;
  color: rgba(102, 126, 234, 0.7);
  width: 16px;
  text-align: center;
}

.resource-links {
  display: grid;
  gap: 8px;
}

.resource-links a {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: rgba(102, 126, 234, 0.1);
  border: 1px solid rgba(102, 126, 234, 0.2);
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.resource-links a:hover {
  background: rgba(102, 126, 234, 0.2);
  border-color: rgba(102, 126, 234, 0.4);
  transform: translateX(4px);
}

.resource-links a i {
  font-size: 1rem;
  color: rgba(102, 126, 234, 0.8);
}

.tooltip-footer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.creator-credit {
  text-align: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  margin: 0 0 8px 0;
}

.creator-credit i {
  color: rgba(102, 126, 234, 0.6);
}

.tooltip-footer .tip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
  padding: 8px;
  background: rgba(102, 126, 234, 0.1);
  border-radius: 6px;
}

.tooltip-footer .tip i {
  color: rgba(255, 200, 0, 0.8);
}

/* Light mode adjustments for tooltip */
body:not(.dark-mode) .dave-help-tooltip {
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid rgba(0, 0, 0, 0.1);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15), 0 0 80px rgba(102, 126, 234, 0.1);
}

body:not(.dark-mode) .tooltip-arrow {
  background: rgba(255, 255, 255, 0.98);
  border-top: 1px solid rgba(0, 0, 0, 0.1);
  border-left: 1px solid rgba(0, 0, 0, 0.1);
}

body:not(.dark-mode) .tooltip-header {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

body:not(.dark-mode) .tooltip-version {
  color: rgba(0, 0, 0, 0.5);
}

body:not(.dark-mode) .tooltip-section h4 {
  color: rgba(0, 0, 0, 0.9);
}

body:not(.dark-mode) .about-description {
  color: rgba(0, 0, 0, 0.7);
}

body:not(.dark-mode) .shortcut-category {
  background: rgba(0, 0, 0, 0.02);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

body:not(.dark-mode) .shortcut-category h5 {
  color: rgba(0, 0, 0, 0.8);
}

body:not(.dark-mode) .shortcut-item kbd {
  background: rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(0, 0, 0, 0.15);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  color: rgba(0, 0, 0, 0.9);
}

body:not(.dark-mode) .shortcut-item span {
  color: rgba(0, 0, 0, 0.7);
}

body:not(.dark-mode) .features-list li {
  color: rgba(0, 0, 0, 0.8);
}

body:not(.dark-mode) .resource-links a {
  background: rgba(102, 126, 234, 0.05);
  border: 1px solid rgba(102, 126, 234, 0.15);
  color: rgba(0, 0, 0, 0.9);
}

body:not(.dark-mode) .resource-links a:hover {
  background: rgba(102, 126, 234, 0.1);
  border-color: rgba(102, 126, 234, 0.3);
}

body:not(.dark-mode) .tooltip-footer {
  border-top: 1px solid rgba(0, 0, 0, 0.1);
}

body:not(.dark-mode) .creator-credit {
  color: rgba(0, 0, 0, 0.5);
}

body:not(.dark-mode) .tooltip-footer .tip {
  color: rgba(0, 0, 0, 0.7);
  background: rgba(102, 126, 234, 0.05);
}

body:not(.dark-mode) .tooltip-content::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.2);
}

body:not(.dark-mode) .tooltip-content::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.3);
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
  .dave-help-tooltip {
    width: calc(100vw - 40px);
    left: 20px !important;
    right: 20px;
  }
  
  .tooltip-content {
    padding: 16px;
    max-height: 80vh;
  }
  
  .shortcuts-grid {
    gap: 12px;
  }
  
  .shortcut-category {
    padding: 10px;
  }
}