Astra_Update_Footer_Builder::sanitize_footer_layout( array $layout, string $type = 'desktop' )

	private function sanitize_footer_layout( $layout, $type = 'desktop' ) {
		$sanitized = array();
		$sections  = array( 'above', 'primary', 'below' );

		$desktop_columns = array(
			'above'   => array( 'above_1', 'above_2', 'above_3', 'above_4', 'above_5', 'above_6' ),
			'primary' => array( 'primary_1', 'primary_2', 'primary_3', 'primary_4', 'primary_5', 'primary_6' ),
			'below'   => array( 'below_1', 'below_2', 'below_3', 'below_4', 'below_5', 'below_6' ),
		);

		$mobile_columns = array(
			'above'   => array( 'above_1', 'above_2' ),
			'primary' => array( 'primary_1', 'primary_2' ),
			'below'   => array( 'below_1', 'below_2' ),
		);

		$columns = 'desktop' === $type ? $desktop_columns : $mobile_columns;

		foreach ( $sections as $section ) {
			if ( isset( $layout[ $section ] ) && is_array( $layout[ $section ] ) ) {
				$section_columns = array();
				foreach ( $columns[ $section ] as $column ) {
					if ( isset( $layout[ $section ][ $column ] ) && is_array( $layout[ $section ][ $column ] ) ) {
						// Normalize component IDs (e.g., widget -> widget-1).
						$normalized = array_map( array( $this, 'normalize_component_id' ), $layout[ $section ][ $column ] );

						$section_columns[ $column ] = $normalized;
					}
				}

				// Only include section if it has columns.
				if ( ! empty( $section_columns ) ) {
					$sanitized[ $section ] = $section_columns;
				}
			}
		}

		return $sanitized;
	}