client/src/components/Nav/MobileNav.jsx

import React from 'react';
import { useRecoilValue } from 'recoil';

import store from '~/store';
import { localize } from '~/localization/Translation';

export default function MobileNav({ setNavVisible }) {
  const conversation = useRecoilValue(store.conversation);
  const { newConversation } = store.useConversation();
  const { title = 'New Chat' } = conversation || {};
  const lang = useRecoilValue(store.lang);

  return (
    <div className="fixed left-0 right-0 top-0 z-10 flex items-center border-b border-white/20 bg-gray-800 pl-1 pt-1 text-gray-200 sm:pl-3 md:hidden">
      <button
        type="button"
        className="-ml-0.5 -mt-0.5 inline-flex h-10 w-10 items-center justify-center rounded-md hover:text-gray-900 focus:outline-none focus:ring-0 focus:ring-inset focus:ring-white dark:hover:text-white"
        onClick={() => setNavVisible((prev) => !prev)}
      >
        <span className="sr-only">{localize(lang, 'com_nav_open_sidebar')}</span>
        <svg
          stroke="currentColor"
          fill="none"
          strokeWidth="1.5"
          viewBox="0 0 24 24"
          strokeLinecap="round"
          strokeLinejoin="round"
          className="h-6 w-6"
          height="1em"
          width="1em"
          xmlns="http://www.w3.org/2000/svg"
        >
          <line x1="3" y1="12" x2="21" y2="12" />
          <line x1="3" y1="6" x2="21" y2="6" />
          <line x1="3" y1="18" x2="21" y2="18" />
        </svg>
      </button>
      <h1 className="flex-1 text-center text-base font-normal">
        {title || localize(lang, 'com_ui_new_chat')}
      </h1>
      <button type="button" className="px-3" onClick={() => newConversation()}>
        <svg
          stroke="currentColor"
          fill="none"
          strokeWidth="1.5"
          viewBox="0 0 24 24"
          strokeLinecap="round"
          strokeLinejoin="round"
          className="h-6 w-6"
          height="1em"
          width="1em"
          xmlns="http://www.w3.org/2000/svg"
        >
          <line x1="12" y1="5" x2="12" y2="19" />
          <line x1="5" y1="12" x2="19" y2="12" />
        </svg>
      </button>
    </div>
  );
}