prepare_menu_defaults( array $defaults, string $index )

function prepare_menu_defaults( $defaults, $index ) {

	$_prefix = 'menu' . $index;

	// Specify all the default values for Menu from here.
	$defaults[ 'header-' . $_prefix . '-bg-color' ]   = '';
	$defaults[ 'header-' . $_prefix . '-color' ]      = '';
	$defaults[ 'header-' . $_prefix . '-h-bg-color' ] = '';
	$defaults[ 'header-' . $_prefix . '-h-color' ]    = '';
	$defaults[ 'header-' . $_prefix . '-a-bg-color' ] = '';
	$defaults[ 'header-' . $_prefix . '-a-color' ]    = '';

	$defaults[ 'header-' . $_prefix . '-bg-obj-responsive' ] = array(
		'desktop' => array(
			'background-color'      => '',
			'background-image'      => '',
			'background-repeat'     => 'repeat',
			'background-position'   => 'center center',
			'background-size'       => 'auto',
			'background-attachment' => 'scroll',
		),
		'tablet'  => array(
			'background-color'      => '',
			'background-image'      => '',
			'background-repeat'     => 'repeat',
			'background-position'   => 'center center',
			'background-size'       => 'auto',
			'background-attachment' => 'scroll',
		),
		'mobile'  => array(
			'background-color'      => '',
			'background-image'      => '',
			'background-repeat'     => 'repeat',
			'background-position'   => 'center center',
			'background-size'       => 'auto',
			'background-attachment' => 'scroll',
		),
	);

	$defaults[ 'header-' . $_prefix . '-color-responsive' ] = array(
		'desktop' => '',
		'tablet'  => '',
		'mobile'  => '',
	);

	$defaults[ 'header-' . $_prefix . '-h-bg-color-responsive' ] = array(
		'desktop' => '',
		'tablet'  => '',
		'mobile'  => '',
	);

	$defaults[ 'header-' . $_prefix . '-h-color-responsive' ] = array(
		'desktop' => '',
		'tablet'  => '',
		'mobile'  => '',
	);

	$defaults[ 'header-' . $_prefix . '-a-bg-color-responsive' ] = array(
		'desktop' => '',
		'tablet'  => '',
		'mobile'  => '',
	);

	$defaults[ 'header-' . $_prefix . '-a-color-responsive' ] = array(
		'desktop' => '',
		'tablet'  => '',
		'mobile'  => '',
	);

	$defaults[ 'header-' . $_prefix . '-menu-hover-animation' ]        = '';
	$defaults[ 'header-' . $_prefix . '-submenu-container-animation' ] = '';

	$defaults[ 'section-hb-menu-' . $index . '-margin' ]  = Astra_Builder_Helper::$default_responsive_spacing;
	$defaults[ 'header-menu' . $index . '-menu-spacing' ] = Astra_Builder_Helper::$default_responsive_spacing;



	/**
	 * Submenu
	 */
	$defaults[ 'header-' . $_prefix . '-submenu-item-border' ]   = false;
	$defaults[ 'header-' . $_prefix . '-submenu-item-b-size' ]   = '1';
	$defaults[ 'header-' . $_prefix . '-submenu-item-b-color' ]  = '#eaeaea';
	$defaults[ 'header-' . $_prefix . '-submenu-border-radius' ] = '';
	$defaults[ 'header-' . $_prefix . '-submenu-top-offset' ]    = '';
	$defaults[ 'header-' . $_prefix . '-submenu-width' ]         = '';
	$defaults[ 'header-' . $_prefix . '-submenu-border' ]        = array(
		'top'    => 2,
		'bottom' => 0,
		'left'   => 0,
		'right'  => 0,
	);

	/**
	 * Menu Stack on Mobile.
	 */
	$defaults[ 'header-' . $_prefix . '-menu-stack-on-mobile' ] = true;

	/**
	 * Menu - Typography.
	 */
	$defaults[ 'header-' . $_prefix . '-font-size' ]      = array(
		'desktop'      => '',
		'tablet'       => '',
		'mobile'       => '',
		'desktop-unit' => 'px',
		'tablet-unit'  => 'px',
		'mobile-unit'  => 'px',
	);
	$defaults[ 'header-' . $_prefix . '-font-weight' ]    = 'inherit';
	$defaults[ 'header-' . $_prefix . '-font-family' ]    = 'inherit';
	$defaults[ 'header-' . $_prefix . '-text-transform' ] = '';
	$defaults[ 'header-' . $_prefix . '-line-height' ]    = '';

	/**
	 * Header Types - Defaults
	 */
	$defaults['transparent-header-main-sep']       = '';
	$defaults['transparent-header-main-sep-color'] = '';

	return $defaults;
}