fix: chat window more compact on mobile

src/lib/components/chat/ChatWindow.svelte

@@ -351,7 +351,11 @@
 		/>
 	</div>
 	<div
-		class="dark:via-gray-80 pointer-events-none absolute inset-x-0 bottom-0 z-0 mx-auto flex w-full max-w-3xl flex-col items-center justify-center bg-gradient-to-t from-white via-white/80 to-white/0 px-3.5 py-4 dark:border-gray-800 dark:from-gray-900 dark:to-gray-900/0 max-md:border-t max-md:bg-white max-md:dark:bg-gray-900 sm:px-5 md:py-8 xl:max-w-4xl [&>*]:pointer-events-auto"
+		class="pointer-events-none absolute inset-x-0 bottom-0 z-0 mx-auto flex w-full
+			max-w-3xl flex-col items-center justify-center bg-gradient-to-t from-white via-white/100
+			to-white/0 px-3.5 py-4 dark:border-gray-800 dark:from-gray-900 dark:via-gray-800/100
+			dark:to-gray-900/0
+			max-sm:border-t-0 max-sm:py-0 sm:px-5 md:py-8 xl:max-w-4xl [&>*]:pointer-events-auto"
 	>
 		{#if sources?.length && !loading}
 			<div