{# Reusable modal shell. Params: body_template (required) template path for the modal body title heading shown in the default header max_width card width class (default max-w-lg) card_extra_classes extra classes on the card header_template optional full-bleed header; when set it replaces the default title + close-button row (that header is then responsible for its own close button) footer_template optional full-bleed footer rendered below the body body_wrapper_classes classes on the body wrapper (default generic-card-padding) aria_labelledby id of the element that labels the dialog #}