refac: styling

src/lib/components/chat/MessageInput/FilesOverlay.svelte

@@ -24,8 +24,10 @@
 		role="region"
 		aria-label="Drag and Drop Container"
 	>
-		<div class="absolute w-full h-full backdrop-blur-sm bg-gray-800/40 flex justify-center">
-			<div class="m-auto pt-64 flex flex-col justify-center">
+		<div
+			class="absolute w-full h-full backdrop-blur-sm bg-gray-100/50 dark:bg-gray-900/80 flex justify-center"
+		>
+			<div class="m-auto flex flex-col justify-center">
 				<div class="max-w-md">
 					<AddFilesPlaceholder />
 				</div>