feat: integrate Tailwind CSS and implement dark mode functionality

- Added Tailwind CSS dependencies and configured PostCSS.
- Updated app component to wrap router outlet with a styled div for dark mode support.
- Modified routing to include a default route and added auth guards.
- Implemented dark mode toggle functionality in content component.
- Enhanced login component with improved styling and lifecycle management.
- Created items component with basic structure and routing.
- Added global styles for body and dark mode variants.
- Updated tests for new items component.

Web/.postcssrc.json

@@ -0,0 +1,5 @@
+{
+  "plugins": {
+    "@tailwindcss/postcss": {}
+  }
+}

Web/package-lock.json

@@ -8,12 +8,14 @@
       "name": "web",
       "version": "0.0.0",
       "dependencies": {
+        "@angular/cdk": "^20.1.4",
         "@angular/common": "^20.0.0",
         "@angular/compiler": "^20.0.0",
         "@angular/core": "^20.0.0",
         "@angular/forms": "^20.0.0",
         "@angular/platform-browser": "^20.0.0",
         "@angular/router": "^20.0.0",
+        "@tailwindcss/postcss": "^4.1.11",
         "angular-oauth2-oidc": "^20.0.2",
         "rxjs": "~7.8.0",
         "tslib": "^2.3.0"
@@ -22,21 +24,36 @@
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         "@angular/cli": "^20.0.6",
         "@angular/compiler-cli": "^20.0.0",
+        "@tailwindcss/cli": "^4.1.11",
         "@types/jasmine": "~5.1.0",
+        "autoprefixer": "^10.4.21",
         "jasmine-core": "~5.7.0",
         "karma": "~6.4.0",
         "karma-chrome-launcher": "~3.2.0",
         "karma-coverage": "~2.2.0",
         "karma-jasmine": "~5.1.0",
         "karma-jasmine-html-reporter": "~2.1.0",
+        "postcss": "^8.5.6",
+        "tailwindcss": "^4.1.11",
         "typescript": "~5.8.2"
       }
     },
+    "node_modules/@alloc/quick-lru": {
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+      "resolved": "https://registry.npmjs.org/@alloc/quick-lru/-/quick-lru-5.2.0.tgz",
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+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
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-      "dev": true,
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       "dependencies": {
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@@ -208,6 +225,45 @@
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       }
     },
+    "node_modules/@angular/cdk": {
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+      "resolved": "https://registry.npmjs.org/@angular/cdk/-/cdk-20.1.4.tgz",
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+        "@angular/core": "^20.0.0 || ^21.0.0",
+        "rxjs": "^6.5.3 || ^7.4.0"
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+    },
+    "node_modules/@angular/cdk/node_modules/entities": {
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+      "resolved": "https://registry.npmjs.org/entities/-/entities-6.0.1.tgz",
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+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=0.12"
+      },
+      "funding": {
+        "url": "https://github.com/fb55/entities?sponsor=1"
+      }
+    },
+    "node_modules/@angular/cdk/node_modules/parse5": {
+      "version": "8.0.0",
+      "resolved": "https://registry.npmjs.org/parse5/-/parse5-8.0.0.tgz",
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+      "license": "MIT",
+      "dependencies": {
+        "entities": "^6.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/inikulin/parse5?sponsor=1"
+      }
+    },
     "node_modules/@angular/cli": {
       "version": "20.0.6",
       "resolved": "https://registry.npmjs.org/@angular/cli/-/cli-20.0.6.tgz",
@@ -1605,7 +1661,6 @@
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-      "dev": true,
       "license": "ISC",
       "dependencies": {
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@@ -1628,7 +1683,6 @@
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-      "dev": true,
       "license": "MIT",
       "dependencies": {
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@@ -1639,7 +1693,6 @@
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-      "dev": true,
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@@ -1649,14 +1702,12 @@
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-      "dev": true,
       "license": "MIT"
     },
     "node_modules/@jridgewell/trace-mapping": {
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       "resolved": "https://registry.npmjs.org/@jridgewell/trace-mapping/-/trace-mapping-0.3.29.tgz",
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-      "dev": true,
       "license": "MIT",
       "dependencies": {
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@@ -2472,7 +2523,6 @@
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       "hasInstallScript": true,
       "license": "MIT",
-      "optional": true,
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@@ -2781,7 +2831,6 @@
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       "dev": true,
       "license": "Apache-2.0",
-      "optional": true,
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       },
@@ -2794,8 +2843,7 @@
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       "dev": true,
-      "license": "MIT",
+      "license": "MIT"
-      "optional": true
     },
     "node_modules/@pkgjs/parseargs": {
       "version": "0.11.0",
@@ -3192,6 +3240,336 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@tailwindcss/cli": {
+      "version": "4.1.11",
+      "resolved": "https://registry.npmjs.org/@tailwindcss/cli/-/cli-4.1.11.tgz",
+      "integrity": "sha512-7RAFOrVaXCFz5ooEG36Kbh+sMJiI2j4+Ozp71smgjnLfBRu7DTfoq8DsTvzse2/6nDeo2M3vS/FGaxfDgr3rtQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@parcel/watcher": "^2.5.1",
+        "@tailwindcss/node": "4.1.11",
+        "@tailwindcss/oxide": "4.1.11",
+        "enhanced-resolve": "^5.18.1",
+        "mri": "^1.2.0",
+        "picocolors": "^1.1.1",
+        "tailwindcss": "4.1.11"
+      },
+      "bin": {
+        "tailwindcss": "dist/index.mjs"
+      }
+    },
+    "node_modules/@tailwindcss/node": {
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+      "resolved": "https://registry.npmjs.org/@tailwindcss/node/-/node-4.1.11.tgz",
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+        "@ampproject/remapping": "^2.3.0",
+        "enhanced-resolve": "^5.18.1",
+        "jiti": "^2.4.2",
+        "lightningcss": "1.30.1",
+        "magic-string": "^0.30.17",
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       "version": "8.5.6",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
       "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
-      "dev": true,
       "funding": [
         {
           "type": "opencollective",
@@ -7224,6 +7913,13 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/postcss-value-parser": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/postcss-value-parser/-/postcss-value-parser-4.2.0.tgz",
+      "integrity": "sha512-1NNCs6uurfkVbeXG4S8JFT9t19m45ICnif8zWLd5oPSZ50QnwMfK+H3jv408d4jw/7Bttv5axS5IiHoLaVNHeQ==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/proc-log": {
       "version": "5.0.0",
       "resolved": "https://registry.npmjs.org/proc-log/-/proc-log-5.0.0.tgz",
@@ -7842,7 +8538,6 @@
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
       "integrity": "sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==",
-      "dev": true,
       "license": "BSD-3-Clause",
       "engines": {
         "node": ">=0.10.0"
@@ -8103,6 +8798,21 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/tailwindcss": {
+      "version": "4.1.11",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.11.tgz",
+      "integrity": "sha512-2E9TBm6MDD/xKYe+dvJZAmg3yxIEDNRc0jwlNyDg/4Fil2QcSLjFKGVff0lAf1jjeaArlG/M75Ey/EYr/OJtBA==",
+      "license": "MIT"
+    },
+    "node_modules/tapable": {
+      "version": "2.2.2",
+      "resolved": "https://registry.npmjs.org/tapable/-/tapable-2.2.2.tgz",
+      "integrity": "sha512-Re10+NauLTMCudc7T5WLFLAwDhQ0JWdrMK+9B2M8zR5hRExKmsRDCBA7/aV/pNJFltmBFO5BAMlQFi/vq3nKOg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/tar": {
       "version": "6.2.1",
       "resolved": "https://registry.npmjs.org/tar/-/tar-6.2.1.tgz",

Web/package.json

@@ -20,12 +20,14 @@
   },
   "private": true,
   "dependencies": {
+    "@angular/cdk": "^20.1.4",
     "@angular/common": "^20.0.0",
     "@angular/compiler": "^20.0.0",
     "@angular/core": "^20.0.0",
     "@angular/forms": "^20.0.0",
     "@angular/platform-browser": "^20.0.0",
     "@angular/router": "^20.0.0",
+    "@tailwindcss/postcss": "^4.1.11",
     "angular-oauth2-oidc": "^20.0.2",
     "rxjs": "~7.8.0",
     "tslib": "^2.3.0"
@@ -34,13 +36,17 @@
     "@angular/build": "^20.0.6",
     "@angular/cli": "^20.0.6",
     "@angular/compiler-cli": "^20.0.0",
+    "@tailwindcss/cli": "^4.1.11",
     "@types/jasmine": "~5.1.0",
+    "autoprefixer": "^10.4.21",
     "jasmine-core": "~5.7.0",
     "karma": "~6.4.0",
     "karma-chrome-launcher": "~3.2.0",
     "karma-coverage": "~2.2.0",
     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "~2.1.0",
+    "postcss": "^8.5.6",
+    "tailwindcss": "^4.1.11",
     "typescript": "~5.8.2"
   }
 }

Web/src/app/app.html

@@ -1 +1,3 @@
-<router-outlet />
+<div class="dark:bg-amber-950 bg-amber-50 text-amber-950 dark:text-amber-50 flex flex-col grow">
+    <router-outlet />
+</div>

Web/src/app/app.routes.ts

@@ -1,20 +1,27 @@
 import { Routes } from '@angular/router';
 import { Login } from './login/login';
 import { authGuard } from './app.route.guard';
+import { App } from './app';
 
 export const routes: Routes = [
+    {
+        path: '',
+        component: App
+    },
     {
         path: 'login',
         component: Login,
+        canActivate: [authGuard]
     },
     {
         path: 'content',
+        loadComponent: () => import('./content/content').then(m => m.Content),
+        canActivate: [authGuard],
         children: [
             {
-                path: '',
+                path: 'items',
-                loadComponent: () => import('./content/content').then(m => m.Content),
+                loadComponent: () => import('./content/items/items').then(m => m.Items),
                 canActivate: [authGuard],
-            }
+            }]
-        ],
     }
 ];

Web/src/app/app.scss

@@ -0,0 +1,5 @@
+:host {
+    display: flex;
+    flex-direction: column;
+    flex: 1;
+}

Web/src/app/app.ts

@@ -1,15 +1,13 @@
-import { HTTP_INTERCEPTORS } from '@angular/common/http';
+import { Component, OnInit } from '@angular/core';
-import { APP_INITIALIZER, Component, inject, OnInit, provideAppInitializer } from '@angular/core';
 import { Router, RouterOutlet } from '@angular/router';
-import { DefaultOAuthInterceptor, OAuthService } from 'angular-oauth2-oidc';
+import { OAuthService } from 'angular-oauth2-oidc';
-import { AppConfigService } from './services/config.service';
 
 @Component({
   selector: 'app-root',
   imports: [RouterOutlet],
   providers: [
     OAuthService,
-   ],
+  ],
   templateUrl: './app.html',
   styleUrl: './app.scss'
 })
@@ -26,6 +24,22 @@ export class App implements OnInit {
     });
   }
   ngOnInit(): void {
-    this.as.loadDiscoveryDocumentAndLogin().then(() => this.router.navigate(['login']));
+    if (!sessionStorage.getItem('isDarkMode')) {
+      const isDarkMode = window.matchMedia('(prefers-color-scheme: dark)').matches ? 'true' : 'false';
+      sessionStorage.setItem('isDarkMode', isDarkMode);
+      setTheme();
+    }
+
+    this.as.loadDiscoveryDocumentAndLogin()
+      .then(() => this.router.navigate(['login']));
   }
 }
+
+export function setTheme(): void {
+  const isDarkMode = sessionStorage.getItem('isDarkMode');
+  if (isDarkMode === 'true') {
+    document.documentElement.classList.add('dark');
+  } else {
+    document.documentElement.classList.remove('dark');
+  }
+}

Web/src/app/content/content.html

@@ -1 +1,8 @@
-<span>{{data()|json}}</span>
+<span>{{data()|json}}</span>
+<router-outlet />
+<div>
+    <a [routerLink]="['/']">Back to Home</a>
+</div>
+<div>
+     <a (click)="toggleMode()" class="cursor-pointer">Change mode</a>
+</div>

Web/src/app/content/content.ts

@@ -1,16 +1,18 @@
 import { JsonPipe } from '@angular/common';
-import { HttpClient, HttpHeaders } from '@angular/common/http';
+import { HttpClient } from '@angular/common/http';
-import { Component, isDevMode, signal } from '@angular/core';
+import { Component, OnInit, signal } from '@angular/core';
 import { OAuthService } from 'angular-oauth2-oidc';
 import { AppConfigService } from '../services/config.service';
+import { RouterLink, RouterOutlet } from "@angular/router";
+import { setTheme } from '../app';
 
 @Component({
   selector: 'app-content',
-  imports: [JsonPipe],
+  imports: [JsonPipe, RouterOutlet, RouterLink],
   templateUrl: './content.html',
   styleUrl: './content.scss'
 })
-export class Content {
+export class Content implements OnInit {
   data = signal({});
 
   constructor(httpClient: HttpClient, readonly as: OAuthService, readonly cs: AppConfigService) {
@@ -19,4 +21,16 @@ export class Content {
         this.data.set(data);
       });
   }
+
+  ngOnInit(): void {
+    setTheme();
+  }
+
+  toggleMode() {
+    sessionStorage.getItem('isDarkMode') === 'true' ?
+      sessionStorage.setItem('isDarkMode', 'false') : sessionStorage.setItem('isDarkMode', 'true');
+    setTheme();
+  }
 }
+
+

Web/src/app/content/items/items.html

@@ -0,0 +1,4 @@
+<p>items works!</p>
+<div>
+    <a [routerLink]="['/','content']">Back to content</a>
+</div>

Web/src/app/content/items/items.spec.ts

@@ -0,0 +1,23 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { Items } from './items';
+
+describe('Items', () => {
+  let component: Items;
+  let fixture: ComponentFixture<Items>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      imports: [Items]
+    })
+    .compileComponents();
+
+    fixture = TestBed.createComponent(Items);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});

Web/src/app/content/items/items.ts

@@ -0,0 +1,12 @@
+import { Component } from '@angular/core';
+import { RouterLink } from '@angular/router';
+
+@Component({
+  selector: 'app-items',
+  imports: [RouterLink],
+  templateUrl: './items.html',
+  styleUrl: './items.scss'
+})
+export class Items {
+
+}

Web/src/app/login/login.html

@@ -1,2 +1 @@
-
+<div class="flex grow flex-col justify-center text-center text-xl">Logging in...</div>
-Logging in...

Web/src/app/login/login.scss

@@ -0,0 +1,6 @@
+:host {
+    display: flex;
+    flex-direction: column;
+    flex: 1;
+    
+}

Web/src/app/login/login.ts

@@ -1,13 +1,16 @@
-import { Component, OnInit } from '@angular/core';
+import { Component, OnDestroy, OnInit } from '@angular/core';
 import { Router } from '@angular/router';
 import { OAuthService } from 'angular-oauth2-oidc';
+import { Subject, takeUntil } from 'rxjs';
 
 @Component({
   selector: 'app-login',
   templateUrl: './login.html',
   styleUrl: './login.scss'
 })
-export class Login implements OnInit {
+export class Login implements OnInit, OnDestroy {
+
+  private readonly _destroy: Subject<void> = new Subject<void>();
 
   constructor(readonly as: OAuthService, readonly router: Router) { }
 
@@ -15,19 +18,27 @@ export class Login implements OnInit {
     if (this.as.hasValidAccessToken() && this.as.hasValidIdToken()) {
       this.getUserInfo();
     } else {
-      this.as.events.subscribe(event => {
+      this.as.events
-        if (event.type === 'token_received')
+        .pipe(
-          if (this.as.hasValidIdToken()) {
+          takeUntil(this._destroy))
-            this.getUserInfo();
+        .subscribe(event => {
-          }
+          if (event.type === 'token_received')
-      })
+            if (this.as.hasValidIdToken()) {
+              this.getUserInfo();
+            }
+        });
     }
   }
 
+  ngOnDestroy(): void {
+    this._destroy.next();
+    this._destroy.complete();
+  }
   getUserInfo(): void {
-    this.as.loadUserProfile().then(value => {
+    this.as.loadUserProfile()
-      console.log('User profile loaded:', value);
+      .then(_ => {
-      this.router.navigate(['/content']);
+        this.router.navigate(['content', 'items']);
-    });
+      })
+      .catch(_ => this.router.navigate(['content', 'items']));
   }
 }

Web/src/styles.scss

@@ -1 +1,14 @@
 /* You can add global styles to this file, and also import other style files */
+@import "tailwindcss";
+
+@custom-variant dark (&:where(.dark, .dark *));
+
+body {
+    font-family: Arial, sans-serif;
+    min-height: 100vh;
+    min-width: 100vw;
+    margin: 0;
+    box-sizing: border-box;
+    display: flex;
+    flex-direction: column;
+}