fix(ui): fix exam and result screen ui

lib/utils.ts

@@ -1,6 +1,38 @@
-import { clsx, type ClassValue } from "clsx"
-import { twMerge } from "tailwind-merge"
+import { clsx, type ClassValue } from "clsx";
+import { twMerge } from "tailwind-merge";
 
 export function cn(...inputs: ClassValue[]) {
-  return twMerge(clsx(inputs))
+  return twMerge(clsx(inputs));
 }
+
+export const getFromStorage = <T>(key: string): T | null => {
+  if (typeof window === "undefined") return null;
+
+  try {
+    const item = sessionStorage.getItem(key);
+    return item ? JSON.parse(item) : null;
+  } catch (error) {
+    console.error(`Error reading from sessionStorage (${key}):`, error);
+    return null;
+  }
+};
+
+export const setToStorage = <T>(key: string, value: T): void => {
+  if (typeof window === "undefined") return;
+
+  try {
+    sessionStorage.setItem(key, JSON.stringify(value));
+  } catch (error) {
+    console.error(`Error writing to sessionStorage (${key}):`, error);
+  }
+};
+
+export const removeFromStorage = (key: string): void => {
+  if (typeof window === "undefined") return;
+
+  try {
+    sessionStorage.removeItem(key);
+  } catch (error) {
+    console.error(`Error removing from sessionStorage (${key}):`, error);
+  }
+};