fix: textarea styling

src/lib/components/chat/MessageInput.svelte

@@ -781,7 +781,7 @@
 										<textarea
 											id="chat-input"
 											bind:this={chatInputElement}
-											class="scrollbar-hidden bg-gray-50 dark:bg-gray-850 dark:text-gray-100 outline-none w-full py-3 px-1 rounded-xl resize-none h-[48px]"
+											class="scrollbar-hidden bg-transparent dark:text-gray-100 outline-none w-full py-3 px-1 rounded-xl resize-none h-[48px]"
 											placeholder={placeholder ? placeholder : $i18n.t('Send a Message')}
 											bind:value={prompt}
 											on:keypress={(e) => {