refactor: enhance theme switch component with loading state and improved animations

apps/infoalloggi/src/components/navbar/theme-toggle.tsx

@@ -1,9 +1,30 @@
 import { motion, type Transition } from "framer-motion";
 import { Moon, Sun } from "lucide-react";
 import { useTheme } from "next-themes";
+import { useEffect, useState } from "react";
 import { cn } from "~/lib/utils";
 
 export const ThemeSwitch = () => {
+	const [mounted, setMounted] = useState(false);
+	useEffect(() => {
+		setMounted(true);
+	}, []);
+
+	if (!mounted) {
+		return <ThemeSwitchSkeleton />;
+	}
+
+	return <ThemeSwitchContent />;
+};
+
+const ThemeSwitchSkeleton = () => (
+	<div
+		aria-hidden="true"
+		className="h-9 w-16 animate-pulse rounded-full bg-muted p-[5px] shadow-inner"
+	/>
+);
+
+const ThemeSwitchContent = () => {
 	const { theme, setTheme } = useTheme();
 
 	const spring: Transition = {
@@ -25,14 +46,22 @@ export const ThemeSwitch = () => {
 			type="button"
 		>
 			<motion.div
+				animate={{ opacity: 1 }}
 				className={cn(
 					"flex size-7 items-center justify-center rounded-full bg-black",
 					theme === "light" ? "bg-yellow-300" : "bg-gray-800/60",
 				)}
+				initial={{ opacity: 0 }}
 				layout
-				transition={spring}
+				transition={{
+					opacity: { duration: 0.1, ease: "easeInOut", delay: 0.5 }, // Fast fade in
+					layout: spring, // Spring for position change
+				}}
 			>
-				<motion.div whileTap={{ rotate: 360 }}>
+				<motion.div
+					animate={{ rotate: theme === "light" ? 180 : 0 }}
+					transition={spring}
+				>
 					{theme === "light" ? (
 						<Sun className="size-5 fill-yellow-500 stroke-yellow-500" />
 					) : (