feat: dark mode for knowledge (#15236)

web/app/components/datasets/create/file-preview/index.module.css

@@ -1,43 +1,29 @@
 .filePreview {
-    @apply flex flex-col border-l border-gray-200 shrink-0;
+    @apply flex flex-col border-l border-components-panel-border shrink-0 bg-background-default-lighter;
     width: 100%;
-    background-color: #fcfcfd;
   }
   
   .previewHeader {
-    @apply border-b border-gray-200 shrink-0;
+    @apply border-b border-divider-subtle shrink-0;
     margin: 42px 32px 0;
     padding-bottom: 16px;
   }
   
   .previewHeader .title {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    color: #101828;
-    font-weight: 600;
-    font-size: 18px;
-    line-height: 28px;
+    @apply flex justify-between items-center text-text-primary;
   }
   
   .previewHeader .fileName {
-    font-weight: 400;
-    font-size: 12px;
-    line-height: 18px;
-    color: #1D2939;
+    @apply text-text-tertiary;
   }
   
   .previewHeader .filetype {
-    color: #667085;
+    @apply text-text-tertiary;
   }
   
   .previewContent {
-    @apply overflow-y-auto grow;
+    @apply overflow-y-auto grow text-text-secondary;
     padding: 20px 32px;
-    font-weight: 400;
-    font-size: 16px;
-    line-height: 24px;
-    color: #344054;
   }
   
   .previewContent .loading {
@@ -46,6 +32,7 @@
     background: #f9fafb center no-repeat url(../assets/Loading.svg);
     background-size: contain;
   }
+  
   .fileContent {
     white-space: pre-line;
     word-break: break-all;

web/app/components/datasets/create/file-preview/index.tsx

@@ -46,13 +46,13 @@ const FilePreview = ({
   return (
     <div className={cn(s.filePreview, 'h-full')}>
       <div className={cn(s.previewHeader)}>
-        <div className={cn(s.title)}>
+        <div className={cn(s.title, 'title-md-semi-bold')}>
           <span>{t('datasetCreation.stepOne.filePreview')}</span>
           <div className='flex items-center justify-center w-6 h-6 cursor-pointer' onClick={hidePreview}>
             <XMarkIcon className='h-4 w-4'></XMarkIcon>
           </div>
         </div>
-        <div className={cn(s.fileName)}>
+        <div className={cn(s.fileName, 'system-xs-medium')}>
           <span>{getFileName(file)}</span><span className={cn(s.filetype)}>.{file?.extension}</span>
         </div>
       </div>