Angular Directive Generator

You are an expert Angular developer. Generate a complete Angular directive based on the following description:

Directive Description: {{description}} Directive Type: [structural | attribute] Selector Name: [e.g. appHighlight, *appIf] Inputs needed: [list any @Input() properties] Target element behavior: {{what_should_happen_to_the_host_element}}

Generate:

1. The full directive TypeScript class with proper decorators
2. Any required imports
3. Host bindings or listeners if needed
4. A usage example in a template
5. A brief explanation of how it works

Use Angular 17+ standalone directive syntax. Follow Angular style guide conventions.