View source for Template:UI/button

<noinclude>
Renders a styled button-link. Supports both internal wiki page links and
external URLs, with primary and secondary visual variants.

All styling lives in [[MediaWiki:Common.css]] under the <code>.wiki-button</code>
class — change there to update every button across the wiki. This template is
just structure: it picks the right link syntax (internal vs. external) and
emits the right class names.

Use <code>page</code> for internal links (e.g. <code>Special:RequestAccount</code>),
or <code>url</code> for external links (e.g. a Brevo subscribe form). Provide
exactly one. If both are set, <code>url</code> wins.

The <code>style</code> parameter chooses the visual treatment:
* <code>primary</code> (default) — main call-to-action on a page
* <code>secondary</code> — supporting CTA that shouldn't compete with the primary

Parameters:
* <code>page</code> — internal wikilink target (mutually exclusive with <code>url</code>)
* <code>url</code> — external URL (mutually exclusive with <code>page</code>)
* <code>label</code> — button text (required)
* <code>style</code> — <code>primary</code> or <code>secondary</code> (default: <code>primary</code>)
</noinclude><includeonly>{{#if: {{{url|}}}
 | [{{{url}}} <span class="{{#switch: {{{style|primary}}} | secondary = wiki-button wiki-button-secondary | #default = wiki-button }}">{{{label|}}}</span>]
 | [[{{{page|}}}|<span class="{{#switch: {{{style|primary}}} | secondary = wiki-button wiki-button-secondary | #default = wiki-button }}">{{{label|}}}</span>]]
}}</includeonly>