// Handy functions

// Convert pixels to ems
@function px-to-em($new-value, $base: $em-base) {
	@if $base == 0 { @return 0 }
	@return $new-value / $base * 1em;
}

@function px-to-rem($new-value, $base: $em-base) {
	@if $base == 0 { @return 0 }
	@return $new-value / $base * 1rem;
}

//------------------------------------------------------------------------------
// Strip Units
@function strip-units($number) {
  @return $number / ($number * 0 + 1);
}


//------------------------------------------------------------------------------
// Return current Line-height value

@function get-line-height($element-font-size-category, $screen-size) {

	@if $screen-size == tiny or $screen-size == small {

		@each $key in $small-typography {
			$font-size-category	: nth($key, 1);
			$values	: nth($key, 2);

			@if $font-size-category == $element-font-size-category {
				@return px-to-rem(nth($values, 2));
			}

		}

	}

	@elseif  $screen-size == medium {

		@each $key in $normal-typography {
			$font-size-category	: nth($key, 1);
			$values	: nth($key, 2);

			@if $font-size-category == $element-font-size-category {
				@return px-to-rem(nth($values, 2));
			}

		}

	}

	@elseif  $screen-size == large {

		@each $key in $large-typography {
			$font-size-category	: nth($key, 1);
			$values	: nth($key, 2);

			@if $font-size-category == $element-font-size-category {
				@return px-to-rem(nth($values, 2));
			}

		}

	}

	@elseif  $screen-size == huge {

		@each $key in $x-large-typography {
			$font-size-category	: nth($key, 1);
			$values	: nth($key, 2);

			@if $font-size-category == $element-font-size-category {
				@return px-to-rem(nth($values, 2));
			}

		}

	}

}