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/admin/page.js

@@ -18,7 +18,7 @@ export default function AdminPage() {
 
 	if (status === "loading") {
 		return (
-			<div className="min-h-screen flex items-center justify-center">
+			<div className="min-h-screen bg-gray-50 dark:bg-gray-900 flex items-center justify-center">
 				<div className="text-lg">Loading...</div>
 			</div>
 		);
@@ -26,7 +26,7 @@ export default function AdminPage() {
 
 	if (!session || session.user.role !== "admin") {
 		return (
-			<div className="min-h-screen flex items-center justify-center">
+			<div className="min-h-screen bg-gray-50 dark:bg-gray-900 flex items-center justify-center">
 				<div className="text-center">
 					<h1 className="text-2xl font-bold text-gray-800 mb-4">
 						Access Denied
@@ -70,7 +70,7 @@ export default function AdminPage() {
 	];
 
 	return (
-		<div className="min-h-screen bg-gray-50 py-8">
+		<div className="min-h-screen bg-gray-50 dark:bg-gray-900 py-8">
 			<div className="max-w-4xl mx-auto px-4 sm:px-6 lg:px-8">
 				<div className="mb-8">
 					<div className="flex items-center justify-between">

src/app/contacts/page.js

@@ -7,6 +7,8 @@ import { Card, CardHeader, CardTitle, CardContent } from "@/components/ui/Card";
 import Button from "@/components/ui/Button";
 import Badge from "@/components/ui/Badge";
 import ContactForm from "@/components/ContactForm";
+import PageContainer from "@/components/ui/PageContainer";
+import PageHeader from "@/components/ui/PageHeader";
 
 export default function ContactsPage() {
 	const router = useRouter();
@@ -171,26 +173,19 @@ export default function ContactsPage() {
 
 	if (showForm) {
 		return (
-			<div className="container mx-auto px-4 py-8">
+			<PageContainer>
 				<ContactForm
 					initialData={editingContact}
 					onSave={handleFormSave}
 					onCancel={handleFormCancel}
 				/>
-			</div>
+			</PageContainer>
 		);
 	}
 
 	return (
-		<div className="container mx-auto px-4 py-8">
-			{/* Header */}
-			<div className="flex flex-col sm:flex-row justify-between items-start sm:items-center gap-4 mb-6">
-				<div>
-					<h1 className="text-3xl font-bold text-gray-900">Kontakty</h1>
-					<p className="text-gray-600 mt-1">
-						Zarządzaj kontaktami do projektów i współpracy
-					</p>
-				</div>
+		<PageContainer>
+			<PageHeader title="Kontakty" description="Zarządzaj kontaktami do projektów i współpracy">
 				<Button onClick={() => setShowForm(true)}>
 					<svg
 						className="w-5 h-5 mr-2"
@@ -207,7 +202,7 @@ export default function ContactsPage() {
 					</svg>
 					Dodaj kontakt
 				</Button>
-			</div>
+			</PageHeader>
 
 			{/* Stats */}
 			{stats && (
@@ -610,6 +605,6 @@ export default function ContactsPage() {
 					</Card>
 				</div>
 			)}
-		</div>
+		</PageContainer>
 	);
 }

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>
 	);
 }

src/app/test-dropdowns/page.js

@@ -25,7 +25,7 @@ export default function DropdownTestPage() {
 	};
 
 	return (
-		<div className="p-8 space-y-8 bg-gray-100 min-h-screen">
+		<div className="p-8 space-y-8 bg-gray-50 dark:bg-gray-900 min-h-screen">
 			<h1 className="text-3xl font-bold text-gray-900">
 				Dropdown Component Test
 			</h1>