{#- chirp-ui: Pulsing Button
    Button with expanding ring pulse effect for attention/CTA.

    Usage:
        from "chirpui/pulsing_button.html" import pulsing_button

        pulsing_button("Try Now")
        pulsing_button("Go Live", icon="◎", href="/live")
-#}

{% def pulsing_button(text, variant="", icon=none, href=none, cls="", type="button", disabled=false) %}
{% set variant = variant | validate_variant(("", "default", "primary", "success", "danger"), "") %}
{% set variant_class = " chirpui-pulsing-btn--" ~ variant if variant else "" %}
{% set base = "chirpui-pulsing-btn" ~ variant_class ~ (" " ~ cls if cls else "") %}
{% if href %}
<a href="{{ href }}" class="{{ base }}">
    <span class="chirpui-pulsing-btn__ring" aria-hidden="true"></span>
    {% if icon %}<span class="chirpui-pulsing-btn__icon">{{ icon | icon }}</span>{% end %}
    {{ text }}
</a>
{% else %}
<button type="{{ type }}" class="{{ base }}" {% if disabled %}disabled{% end %}>
    <span class="chirpui-pulsing-btn__ring" aria-hidden="true"></span>
    {% if icon %}<span class="chirpui-pulsing-btn__icon">{{ icon | icon }}</span>{% end %}
    {{ text }}
</button>
{% end %}
{% end %}