rhl-lieferscheine/components/ui/mode-toggle.jsx

"use client";

/**
 * ModeToggle
 *
 * Small theme toggle dropdown using next-themes.
 *
 * Note:
 * - This is not wired into the AppShell TopNav yet (RHL-019 uses a placeholder button).
 * - We keep it in the project because it is useful later and already proven working.
 */

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

import { Button } from "@/components/ui/button";
import {
	DropdownMenu,
	DropdownMenuContent,
	DropdownMenuItem,
	DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";

export function ModeToggle() {
	const { setTheme } = useTheme();

	return (
		<DropdownMenu>
			<DropdownMenuTrigger asChild>
				<Button variant="outline" size="icon">
					<Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
					<Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
					<span className="sr-only">Theme umschalten</span>
				</Button>
			</DropdownMenuTrigger>

			<DropdownMenuContent align="end">
				<DropdownMenuItem onClick={() => setTheme("light")}>
					Hell
				</DropdownMenuItem>
				<DropdownMenuItem onClick={() => setTheme("dark")}>
					Dunkel
				</DropdownMenuItem>
				<DropdownMenuItem onClick={() => setTheme("system")}>
					System
				</DropdownMenuItem>
			</DropdownMenuContent>
		</DropdownMenu>
	);
}