.sidebar {
  width: 300px;
  display: flex;
  flex-direction: column;
  position: relative;
  min-width: 300px;
  max-width: 300px;
  overflow-y: auto;
  flex-shrink: 0;
  padding-right: var(--one);
  padding-left: var(--half);
  box-sizing: border-box;
}

.sidebar .material-symbols-outlined {
  font-size: 20px;
}

.sidebar .sidebar-section {
  margin-bottom: var(--one);
  border: 1px dashed var(--border-color);
  border-radius: 8px;
}

.sidebar .sidebar-section.collapsed .section-content {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
}

.sidebar .sidebar-section .add, .sidebar .sidebar-section .remove {
  visibility: hidden;
  transition: visibility 0s;
}

.sidebar .sidebar-section.collapsed .section-header:hover .add, .sidebar .sidebar-section:not(.collapsed) .section-header:hover .remove {
  visibility: visible;
}

.sidebar .section-header {
  padding: var(--one);
  padding-right: calc(var(--one) + 24px);
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  opacity: 0.7;
  position: relative;
}

.sidebar .section-header .add, .sidebar .section-header .remove {
  position: absolute;
  right: var(--one);
}

.sidebar .section-header:hover {
  opacity: 1;
}

.sidebar .sidebar-item {
  padding: var(--one);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
}

.sidebar .sidebar-item:hover {
  font-weight: 600;
}

.sidebar .section-content {
  position: relative;
  display: flex;
  flex-direction: column;
  max-height: 1000px;
  overflow: hidden;
  opacity: 1;
  transition: max-height 0.3s ease-in-out, opacity 0.3s ease-in-out;
}

.sidebar .section-content .model-select-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--half);
  padding: var(--half) var(--one);
  box-sizing: border-box;
  white-space: nowrap;
}

.sidebar .section-content .model-select-item label {
  font-size: 0.85rem;
  color: var(--text-color-secondary);
  flex: 1;
  margin-right: var(--half);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar .section-content .model-select-item .model-select {
  font-size: 0.85rem;
  line-height: 1;
  height: 28px;
  padding: 1px 6px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  background: transparent;
  color: var(--text-color);
  min-width: 0;
  width: 110px;
  max-width: 110px;
  flex: 0 0 110px;
}

.sidebar .section-content .language-selection {
  padding: var(--half);
}

.sidebar .section-content .language-selection .radio-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: var(--half);
}

.sidebar .section-content .language-selection .radio-group .radio-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  position: relative;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.sidebar .section-content .language-selection .radio-group .radio-label:hover {
  background: var(--hover-bg);
  font-weight: 600;
}

.sidebar .section-content .language-selection .radio-group .radio-label .material-symbols-outlined {
  color: var(--text-color-secondary);
  transition: all 0.2s ease;
  margin-left: 2rem;
  font-size: 20px;
}

.sidebar .section-content .language-selection .radio-group .radio-label .radio-text {
  color: var(--text-color);
  font-size: 0.9rem;
}

.sidebar .section-content .files-container {
  display: flex;
  flex-direction: column;
}

.sidebar .section-content .files-container:empty {
  display: none;
}

.sidebar .section-content .file-item {
  border-bottom: 1px dashed var(--border-color);
}

.sidebar .section-content .file-item:first-child {
  border-top: 1px dashed var(--border-color);
}

.sidebar .section-content .file-item .item-text {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--half);
}

.sidebar .section-content .file-item .file-status-indicator {
  display: inline-flex;
  align-items: center;
  font-size: 16px;
}

.sidebar .section-content .file-item .file-status-indicator.processing {
  color: var(--primary-color);
}

.sidebar .section-content .file-item .file-status-indicator.processing .material-symbols-outlined {
  animation: spin 1s linear infinite;
}

.sidebar .section-content .file-item .file-status-indicator.failed {
  color: var(--error-color);
}

.sidebar .section-content .file-item .action-icon {
  opacity: 0.7;
}

.sidebar .section-content .file-item .action-icon.hover-icon {
  display: none;
  color: var(--error-color);
}

.sidebar .section-content .file-item:hover .default-icon {
  display: none;
}

.sidebar .section-content .file-item:hover .hover-icon {
  display: inline-block;
}

.sidebar .section-content .file-item:hover .hover-icon:hover {
  opacity: 1;
}

.sidebar .sidebar-tabs {
  display: flex;
  margin-bottom: var(--half);
}

.sidebar .sidebar-tabs .tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--half);
  cursor: pointer;
  gap: 4px;
  opacity: 0.7;
  border-bottom: 3px solid transparent;
}

.sidebar .sidebar-tabs .tab:hover {
  opacity: 1;
}

.sidebar .sidebar-tabs .tab.active {
  opacity: 1;
  border-bottom-color: var(--primary-color);
}

.sidebar .sidebar-tabs .tab .material-symbols-outlined {
  font-size: 20px;
}

.sidebar .sidebar-tabs .tab .tab-text {
  font-size: 0.9rem;
}

.sidebar .sidebar-tabs .sidebar-collapse {
  margin-left: auto;
  cursor: pointer;
  opacity: 0.7;
  padding: 0 var(--half);
}

.sidebar .sidebar-tabs .sidebar-collapse:hover {
  opacity: 1;
}

.sidebar .sidebar-content .tab-panel {
  display: none;
}

.sidebar .sidebar-content .tab-panel.active {
  display: block;
}

.sidebar .sidebar-item[data-action="add-file"] {
  position: relative;
}

.sidebar .sidebar-item[data-action="add-file"] .default-content, .sidebar .sidebar-item[data-action="add-file"] .drop-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  transition: opacity 0.2s ease;
}

.sidebar .sidebar-item[data-action="add-file"] .drop-content {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  opacity: 0;
  border-radius: 4px;
  padding: var(--half);
  box-sizing: border-box;
  pointer-events: none;
}

.sidebar .sidebar-item[data-action="add-file"] .drop-content .drag-icon {
  font-size: 28px;
  color: var(--text-color-secondary);
}

.sidebar .sidebar-item[data-action="add-file"] .drop-content .item-text {
  width: 100%;
  text-align: center;
  color: var(--text-color-secondary);
}

.sidebar .sidebar-item[data-action="add-file"] .upload-indicator {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--button-bg);
  border-radius: 4px;
  z-index: 5;
}

.sidebar .sidebar-item[data-action="add-file"] .upload-indicator .upload-content {
  display: flex;
  align-items: center;
  gap: var(--half);
}

.sidebar .sidebar-item[data-action="add-file"] .upload-indicator .upload-content .upload-text {
  font-size: 0.9rem;
  color: var(--text-color);
}

.sidebar .sidebar-item[data-action="add-file"].uploading .default-content, .sidebar .sidebar-item[data-action="add-file"].uploading .drop-content {
  opacity: 0;
}

.sidebar .sidebar-item[data-action="add-file"].drag-over:not(.uploading) .default-content {
  opacity: 0;
}

.sidebar .sidebar-item[data-action="add-file"].drag-over:not(.uploading) .drop-content {
  opacity: 1;
  background: transparent;
  outline: 2px dashed var(--primary-color);
  outline-offset: -6px;
  box-shadow: 0 0 0 0 rgba(var(--primary-rgb, 213, 0, 50), 0);
  animation: dropzone-glow 1.2s ease-in-out infinite;
}

.sidebar .sidebar-item[data-action="add-file"] .file-input {
  display: none;
}

.sidebar .sidebar-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  border-radius: 4px;
}

.sidebar .sidebar-item:hover {
  background: var(--button-bg);
}

.sidebar .sidebar-item .item-text {
  font-size: 0.9rem;
}

.sidebar .sidebar-item .material-symbols-outlined, .sidebar .sidebar-item .material-symbols-rounded {
  font-size: 20px;
  margin-left: var(--half);
}

.sidebar-skeleton .sidebar-item.skeleton {
  cursor: default;
  background: none;
  pointer-events: none;
  padding: var(--one);
}

.sidebar-skeleton .sidebar-item.skeleton .skeleton-line {
  height: 12px;
  width: 60%;
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.06), rgba(0, 0, 0, 0.12), rgba(0, 0, 0, 0.06));
  background-size: 200% 100%;
  animation: sidebar-skeleton-shimmer 1.2s ease-in-out infinite;
}

@keyframes sidebar-skeleton-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

@keyframes dropzone-glow {
  0% {
    box-shadow: 0 0 0 0 rgba(213, 0, 50, 0);
  }
  50% {
    box-shadow: 0 0 12px 2px rgba(213, 0, 50, 0.25);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(213, 0, 50, 0);
  }
}