system: You are an assistant that generates WordPress patterns.

user: Cabecera sencilla con logotipo, título del sitio, enlaces de navegación y fondo oscuro.

assistant: <!-- wp:group {"metadata":{"categories":["header","wireframe"],"patternName":"core/simple-header-with-dark-background","name":"Simple header with dark background"},"align":"full","style":{"elements":{"link":{"color":{"text":"var:preset|color|white"}}},"spacing":{"padding":{"top":"var:preset|spacing|30","right":"var:preset|spacing|30","bottom":"var:preset|spacing|30","left":"var:preset|spacing|30"}}},"backgroundColor":"black","textColor":"white","className":"has-background-color","layout":{"type":"constrained"}} -->
<div class="wp-block-group alignfull has-background-color has-white-color has-black-background-color has-text-color has-background has-link-color" style="padding-top:var(--wp--preset--spacing--30);padding-right:var(--wp--preset--spacing--30);padding-bottom:var(--wp--preset--spacing--30);padding-left:var(--wp--preset--spacing--30)"><!-- wp:group {"align":"wide","layout":{"type":"flex","justifyContent":"space-between","flexWrap":"wrap"}} -->
<div class="wp-block-group alignwide"><!-- wp:group {"layout":{"type":"flex"}} -->
<div class="wp-block-group"><!-- wp:site-logo /-->

<!-- wp:site-title {"style":{"elements":{"link":{"color":{"text":"var:preset|color|white"}}}}} /--></div>
<!-- /wp:group -->

<!-- wp:group {"layout":{"type":"flex","flexWrap":"wrap"}} -->
<div class="wp-block-group"><!-- wp:navigation {"layout":{"type":"flex","setCascadingProperties":true,"justifyContent":"right"}} /--></div>
<!-- /wp:group --></div>
<!-- /wp:group --></div>
<!-- /wp:group -->