Astra_Update_Body_Font::get_input_schema()

	public function get_input_schema() {
		return array(
			'type'       => 'object',
			'properties' => array(
				'font_family'    => array(
					'type'        => 'string',
					'description' => 'Font family name (e.g., "Inter", "Roboto", "Arial")',
				),
				'font_weight'    => array(
					'type'        => 'string',
					'description' => 'Font weight (e.g., "400", "500", "700")',
				),
				'font_size'      => array(
					'type'        => 'object',
					'description' => 'Font size object with separate numeric values and unit strings. Parse user input: "20px" becomes desktop:"20", desktop-unit:"px". Example: {"desktop": "16", "tablet": "16", "mobile": "16", "desktop-unit": "px", "tablet-unit": "px", "mobile-unit": "px"}',
					'properties'  => array(
						'desktop'      => array(
							'type'        => 'string',
							'description' => 'Numeric value as string (e.g., "16" not "16px")',
						),
						'tablet'       => array(
							'type'        => 'string',
							'description' => 'Numeric value as string',
						),
						'mobile'       => array(
							'type'        => 'string',
							'description' => 'Numeric value as string',
						),
						'desktop-unit' => array(
							'type'        => 'string',
							'description' => 'Unit only: px, em, rem, or vw',
							'enum'        => array( 'px', 'em', 'rem', 'vw' ),
						),
						'tablet-unit'  => array(
							'type'        => 'string',
							'description' => 'Unit only: px, em, rem, or vw',
							'enum'        => array( 'px', 'em', 'rem', 'vw' ),
						),
						'mobile-unit'  => array(
							'type'        => 'string',
							'description' => 'Unit only: px, em, rem, or vw',
							'enum'        => array( 'px', 'em', 'rem', 'vw' ),
						),
					),
				),
				'line_height'    => array(
					'type'        => 'string',
					'description' => 'Line height value',
				),
				'text_transform' => array(
					'type'        => 'string',
					'description' => 'Text transform (uppercase, lowercase, capitalize, none)',
					'enum'        => array( 'uppercase', 'lowercase', 'capitalize', 'none', '' ),
				),
				'letter_spacing' => array(
					'type'        => 'string',
					'description' => 'Letter spacing value',
				),
			),
		);
	}