fix: update background color for loading and access denied states in AdminPage

fix: refactor ContactsPage to use PageContainer and PageHeader components
fix: refactor TeamLeadsDashboard to use PageContainer for consistent layout
fix: update background color in DropdownTestPage for improved visibility

src/app/dashboard/page.js

@@ -3,6 +3,7 @@
 import { useState, useEffect } from "react";
 import { LineChart, Line, XAxis, YAxis, CartesianGrid, Tooltip, Legend, ResponsiveContainer, BarChart, Bar, ComposedChart, PieChart, Pie, Cell } from 'recharts';
 import { useTranslation } from "@/lib/i18n";
+import PageContainer from "@/components/ui/PageContainer";
 
 export default function TeamLeadsDashboard() {
 	const { t } = useTranslation();
@@ -79,7 +80,7 @@ export default function TeamLeadsDashboard() {
 	};
 
 	return (
-		<div className="container mx-auto px-4 py-8">
+		<PageContainer>
 			<div className="flex items-center justify-between mb-8">
 				<h1 className="text-3xl font-bold text-gray-900 dark:text-white">
 					{t('teamDashboard.title')}
@@ -284,6 +285,6 @@ export default function TeamLeadsDashboard() {
 					</div>
 				</div>
 			</div>
-		</div>
+		</PageContainer>
 	);
 }