"use client";

import { Moon, Sun } from "lucide-react";
import { useTheme } from "next-themes";
import { useEffect, useState } from "react";

export function ModeToggle() {
  const { theme, setTheme } = useTheme();
  const [mounted, setMounted] = useState(false);
  useEffect(() => setMounted(true), []);
  if (!mounted) return null;
  const isDark =
    theme === "dark" ||
    (!theme &&
      typeof window !== "undefined" &&
      window.matchMedia("(prefers-color-scheme: dark)").matches);
  return (
    <button
      aria-label="Alternar tema"
      className="inline-flex h-9 items-center gap-2 rounded-md border border-[var(--border)] bg-[var(--surface)] px-3 text-sm transition-colors hover:bg-[color-mix(in_oklab,var(--surface),black_6%)] focus:outline-none focus-visible:ring-2 focus-visible:ring-[var(--accent)]"
      onClick={() => setTheme(isDark ? "light" : "dark")}
    >
      {isDark ? <Sun className="h-4 w-4" /> : <Moon className="h-4 w-4" />}
      <span className="hidden sm:inline">{isDark ? "Light" : "Dark"}</span>
    </button>
  );
}