Angular styles not applying when insert component inside shadow-root - html

In my app, I use the widget which displays in shadow-root, and inside it has a div with an id where I need to insert my component. Like:
<widget>
#shadow-root (open)
....
<div id='container'> // need to insert component here // </div>
...
</widget>
For now, in test.html I have simple
<div #test>It works!</div>
In widget settings, I could get this <div id='container'></div> as parameter and pass it to my component, so test.ts looks like
#Component({
selector: 'test',
templateUrl: './test.component.html',
styleUrls: ['./test.component.less'],
changeDetection: ChangeDetectionStrategy.OnPush
})
export class Test implements OnInit, AfterViewInit {
#Input() container: HTMLDivElement,
#ViewChild('test', { static: true }) test: ElementRef;
ngAfterViewInit(): void {
const testElement = this.test.nativeElement;
container.appendChild(testElement);
}
}
The problem is that when it inserts to the shadow-root it doesn't see the styles from test.component.less. I tried :host{} :host ::ng-deep {} and it still doesn't work.
So my question is - is there a way to apply styles from test.component.less to my .html file, while it's inside shadow-root?
Would be really grateful for any help!

Maybe you need set view encapsulation to none
#Component({
selector: 'test',
templateUrl: './test.component.html',
styleUrls: ['./test.component.less'],
changeDetection: ChangeDetectionStrategy.OnPush,
encapsulation: ViewEncapsulation.None
})
hope helped you.

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What else I'm missing out here. Please point out my mistake.
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3) app.component.scss
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(Project have multiple sub-project as well)
but none of them are getting applied !
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