components/layout.js


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import Navbar from "./navbar";
import Footer from "./footer";
import { useEffect, useState } from "react";

function Layout(props) {
  const [isAtTop, setIsAtTop] = useState(true);
  const [isScrollingDown, setIsScrollingDown] = useState(false);

  useEffect(() => {
    const handleScroll = () => {
      const scrollY = window.scrollY;

      if (scrollY <= 200) {
        setIsAtTop(true);
        setIsScrollingDown(false);
      } else if (scrollY > lastScrollY) {
        setIsAtTop(false);
        setIsScrollingDown(true);
      } else {
        setIsAtTop(false);
        setIsScrollingDown(false);
      }

      lastScrollY = scrollY;
    };

    let lastScrollY = window.scrollY;

    window.addEventListener("scroll", handleScroll);

    return () => {
      window.removeEventListener("scroll", handleScroll);
    };
  }, []);

  return (
    <>
      <main
        className={`flex h-auto bg-[#121212] text-white flex-col ${props.className}`}
      >
        {/* PC/Tablet */}
        <Navbar
          className={`absolute z-50 hidden w-full duration-500 lg:fixed lg:top-0 lg:block lg:transition-all ${
            isAtTop
              ? `px-2 pt-2 transition-all duration-1000 ${props.navTop}`
              : isScrollingDown
              ? "lg:h-16 lg:translate-y-[-100%] lg:shadow-sm lg:bg-[#0c0d10] "
              : "lg:h-16 lg:translate-y-0 lg:shadow-sm lg:bg-[#0c0d10]"
          }`}
        />

        {/* Mobile */}
        <Navbar
          className={`absolute z-50 w-full duration-300 lg:fixed lg:top-0 lg:hidden lg:transition-all`}
        />
        <div className="grid items-center justify-center">{props.children}</div>
        <Footer />
      </main>
    </>
  );
}

export default Layout;