Astra_Update_Heading_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., "Playfair Display", "Montserrat", "Arial")',
				),
				'font_weight'    => array(
					'type'        => 'string',
					'description' => 'Font weight (e.g., "400", "500", "700")',
				),
				'font_size'      => array(
					'type'        => 'object',
					'description' => 'Font size with responsive values. Separate numeric value from unit. Example: {"desktop": "32", "tablet": "28", "mobile": "24", "desktop-unit": "px", "tablet-unit": "px", "mobile-unit": "px"}',
					'properties'  => array(
						'desktop'      => array(
							'type'        => 'string',
							'description' => 'Desktop size value only, without unit (e.g., "32", "2")',
						),
						'tablet'       => array(
							'type'        => 'string',
							'description' => 'Tablet size value only, without unit',
						),
						'mobile'       => array(
							'type'        => 'string',
							'description' => 'Mobile size value only, without unit',
						),
						'desktop-unit' => array(
							'type'        => 'string',
							'description' => 'Desktop unit (px, em, rem, vw)',
							'enum'        => array( 'px', 'em', 'rem', 'vw' ),
						),
						'tablet-unit'  => array(
							'type'        => 'string',
							'description' => 'Tablet unit (px, em, rem, vw)',
							'enum'        => array( 'px', 'em', 'rem', 'vw' ),
						),
						'mobile-unit'  => array(
							'type'        => 'string',
							'description' => 'Mobile unit (px, em, rem, 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',
				),
			),
		);
	}