/* file-browser.css */
.file-browser-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--dialog-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: calc(var(--z-index-modal) + 2);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.file-browser-overlay.active {
  opacity: 1;
}
.file-browser-modal {
  width: 1105px;
  max-width: 95%;
  height: 600px;
  max-height: 95vh;
  background-color: var(--dialog-bg);
  color: var(--dialog-text, var(--color-text));
  border-radius: var(--card-border-radius);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}
.file-browser-modal.active {
  transform: scale(1);
}
.file-browser-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 20px;
  border-bottom: 1px solid var(--color-border);
}
.file-browser-header h3 {
  margin: 0;
  font-size: 18px;
  font-weight: var(--font-weight-medium, 500);
  color: var(--color-text);
}
.file-browser-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: color var(--transition-duration, 0.2s);
}
.file-browser-close:hover {
  color: var(--color-text);
}
.file-browser-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border);
}
.file-browser-tab {
  padding: 12px 20px;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  color: var(--color-text-muted);
  transition: all var(--transition-duration, 0.2s);
}
.file-browser-tab.active {
  border-bottom-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium, 500);
}
.file-browser-tab:hover:not(.active) {
  background-color: var(--color-surface-hover);
  color: var(--color-text);
}
.file-browser-content {
  flex: 1;
  overflow: hidden;
  position: relative;
}
.file-browser-tab-content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  overflow: hidden;
}
.file-browser-tab-content.active {
  display: flex;
}
.file-browser-categories {
  width: 200px;
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  padding: 10px 0;
}
.file-browser-categories ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.file-browser-categories li {
  padding: 8px 15px;
  cursor: pointer;
  color: var(--color-text);
  transition: background-color var(--transition-duration, 0.2s);
}
.file-browser-categories li:hover {
  background-color: var(--color-surface-hover);
}
.file-browser-categories li.active {
  background-color: var(--color-surface-dark);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium, 500);
}
.file-browser-files-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.file-browser-sidebar {
  width: 220px;
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
  background-color: var(--color-surface);
}
.sidebar-title {
  padding: 15px;
  font-weight: var(--font-weight-medium, 500);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}
.folder-tree {
  padding: 10px 0;
}
.folder-tree-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.folder-tree-item {
  position: relative;
}
.folder-tree-link {
  display: flex;
  align-items: center;
  padding: 8px 15px;
  padding-left: calc(15px + 15px * var(--level, 0));
  color: var(--color-text);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-duration, 0.2s);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.folder-tree-link:hover {
  background-color: var(--color-surface-hover);
}
.folder-tree-item.active > .folder-tree-link {
  background-color: var(--color-surface-dark);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium, 500);
}
.expand-icon {
  width: 16px;
  height: 16px;
  margin-right: 5px;
  position: relative;
}
.expand-icon:before {
  content: '+';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}
.folder-tree-item.expanded > .folder-tree-link .expand-icon:before {
  content: '-';
}
.file-browser-main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.file-browser-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 15px;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
}
.file-browser-breadcrumbs {
  display: flex;
  align-items: center;
  overflow-x: auto;
  white-space: nowrap;
  padding-right: 10px;
}
.breadcrumb-item {
  color: var(--color-text-muted);
  text-decoration: none;
}
.breadcrumb-item:hover {
  color: var(--color-primary);
  text-decoration: underline;
}
.breadcrumb-separator {
  margin: 0 5px;
  color: var(--color-border);
}
.file-browser-actions {
  display: flex;
}
.action-button {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: 6px 12px;
  border-radius: var(--border-radius);
  margin-left: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  font-size: var(--font-size-sm, 13px);
  transition: all var(--transition-duration, 0.2s);
}
.action-button:hover {
  background-color: var(--color-surface-hover);
  border-color: var(--color-primary);
}
.action-button span {
  margin-right: 5px;
}
.file-browser-search {
  position: relative;
  width: 200px;
}
.file-browser-search input {
  width: 100%;
  padding: 6px 12px;
  padding-right: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background-color: var(--input-bg, var(--color-background));
  color: var(--input-text, var(--color-text));
  font-size: var(--font-size-sm, 13px);
}
.file-browser-search input:focus {
  outline: none;
  border-color: var(--color-primary);
}
.search-icon {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}
.view-options {
  display: flex;
  margin-left: 10px;
}
.view-option {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-duration, 0.2s);
}
.view-option:first-child {
  border-top-left-radius: var(--border-radius);
  border-bottom-left-radius: var(--border-radius);
  border-right: none;
}
.view-option:last-child {
  border-top-right-radius: var(--border-radius);
  border-bottom-right-radius: var(--border-radius);
}
.view-option.active {
  background-color: var(--color-surface-dark);
  color: var(--color-primary);
}
.file-browser-drop-area {
  flex: 1;
  overflow-y: auto;
  position: relative;
}
.file-browser-drop-area.drag-over:before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-surface-dark);
  border: 2px dashed var(--color-primary);
  z-index: 1;
}
.drop-message {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--color-primary);
  z-index: 2;
}
.drag-over .drop-message {
  display: block;
}
.drop-message span {
  font-size: 48px;
  margin-bottom: 10px;
  display: block;
}
.file-browser-files {
  width: 100%;
  height: 100%;
  overflow-x: hidden;
  overflow-y: auto;
}
.file-browser-files.grid-view {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  padding: 15px;
}
.file-browser-files.list-view {
  display: flex;
  flex-direction: column;
}
.file-item {
  background-color: var(--color-background);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-duration, 0.2s);
  position: relative;
}
.file-browser-search [class^="icon-"]:before,
.file-browser-search [class*=" icon-"]:before,
.view-options [class^="icon-"]:before,
.view-options [class*=" icon-"]:before,
.file-item [class^="icon-"]:before,
.file-item [class*=" icon-"]:before {
  margin-right: 0;
}
.grid-view .file-item {
  display: flex;
  flex-direction: column;
  padding: 10px;
  text-align: center;
  border: 1px solid var(--color-border);
  width: 110px;
  height: 142px;
}
.list-view .file-item {
  display: flex;
  align-items: center;
  padding: 8px 15px;
  border-bottom: 1px solid var(--color-border);
}
.file-item:hover {
  background-color: var(--color-surface-hover);
}
.file-item.selected {
  background-color: var(--color-surface-dark);
  border-color: var(--color-primary);
}
.file-thumbnail {
  display: flex;
  align-items: center;
  justify-content: center;
}
.grid-view .file-thumbnail {
  width: 90px;
  height: 90px;
  margin-bottom: 10px;
}
.list-view .file-thumbnail {
  width: 53px;
  margin-right: 10px;
}
.file-thumbnail img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}
.file-thumbnail span {
  font-size: 36px;
  color: var(--color-text-muted);
  background-position: center;
  background-size: contain;
  background-repeat: no-repeat;
  width: 100%;
  display: flex;
  align-content: center;
  align-items: center;
  justify-content: center;
}
.list-view .file-thumbnail span {
  font-size: 20px;
  height: 53px;
}
.grid-view .file-thumbnail span {
  height: 90px;
}
.grid-view .file-info {
  padding: 0;
}
.file-name {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: var(--font-size-sm, 13px);
  color: var(--color-text);
}
.list-view .file-name {
  margin-bottom: 3px;
}
.file-details {
  display: flex;
  font-size: var(--font-size-xs, 12px);
  color: var(--color-text-muted);
}
.file-size {
  margin-right: 15px;
}
.file-browser-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}
.file-browser-status {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm, 13px);
}
.file-browser-buttons {
  display: flex;
}
.file-browser-button {
  padding: 8px 16px;
  border-radius: var(--border-radius);
  cursor: pointer;
  margin-left: 10px;
  transition: all var(--transition-duration, 0.2s);
}
.file-browser-button.cancel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}
.file-browser-button.cancel:hover {
  background-color: var(--color-surface-hover);
}
.file-browser-button.select {
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary-hover);
  color: var(--color-primary-text, #fff);
}
.file-browser-button.select:hover {
  background-color: var(--color-primary-hover);
}
.file-browser-context-menu {
  position: absolute;
  background-color: var(--dialog-bg, var(--color-background));
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  z-index: calc(var(--z-index-modal) + 10);
}
.context-menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  cursor: pointer;
  color: var(--color-text);
  transition: background-color var(--transition-duration, 0.2s);
}
.context-menu-item:hover {
  background-color: var(--color-surface-hover);
}
.context-menu-item.disabled {
  opacity: 0.5;
  pointer-events: none;
}
.context-menu-separator {
  height: 1px;
  background-color: var(--color-border);
  margin: 5px 0;
}
.search-view-container {
  display: flex;
}
.file-browser-files .empty-message {
  margin: 0 auto;
  align-self: center;
  color: var(--color-error);
}
/* Loading spinner */
.file-browser-status .fb-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: fb-spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}
@keyframes fb-spin {
  to {
    transform: rotate(360deg);
  }
}
/* Keyboard focus outline for file items */
.file-item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}