/// Grid system
//
// Generate semantic grid columns with these mixins.

@mixin make-container($gutters: $grid-gutter-widths) {
	position: relative;
	margin-left: auto;
	margin-right: auto;

	@each $breakpoint in map-keys($gutters) {
		@include media-breakpoint-up($breakpoint) {
			$gutter: map-get($gutters, $breakpoint);
			padding-right: ($gutter / 2);
			padding-left:  ($gutter / 2);
		}
	}
}


// For each breakpoint, define the maximum width of the container in a media query
@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {
	@each $breakpoint, $container-max-width in $max-widths {
		@include media-breakpoint-up($breakpoint, $breakpoints) {
			width: $container-max-width;
			max-width: 100%;
		}
	}
}

@mixin make-gutters($gutters: $grid-gutter-widths) {
	@each $breakpoint in map-keys($gutters) {
		@include media-breakpoint-up($breakpoint) {
			$gutter: map-get($gutters, $breakpoint);
			padding-right: ($gutter / 2);
			padding-left:  ($gutter / 2);
		}
	}
}

@mixin make-row($gutters: $grid-gutter-widths) {
	display: flex;
	flex-wrap: wrap;

	@each $breakpoint in map-keys($gutters) {
		@include media-breakpoint-up($breakpoint) {
			$gutter: map-get($gutters, $breakpoint);
			margin-right: ($gutter / -2);
			margin-left:  ($gutter / -2);
		}
	}
}

@mixin make-col-ready($gutters: $grid-gutter-widths) {
	position: relative;
	// Prevent columns from becoming too narrow when at smaller grid tiers by
	// always setting `width: 100%;`. This works because we use `flex` values
	// later on to override this initial width.
	width: 100%;
	min-height: 1px; // Prevent collapsing

	@each $breakpoint in map-keys($gutters) {
		@include media-breakpoint-up($breakpoint) {
			$gutter: map-get($gutters, $breakpoint);
			padding-right: ($gutter / 2);
			padding-left:  ($gutter / 2);
		}
	}
}

@mixin make-col($size, $columns: $grid-columns) {
	flex: 0 0 percentage($size / $columns);
	// width: percentage($size / $columns);
	// Add a `max-width` to ensure content within each column does not blow out
	// the width of the column. Applies to IE10+ and Firefox. Chrome and Safari
	// do not appear to require this.
	max-width: percentage($size / $columns);
}

@mixin make-col-offset($size, $columns: $grid-columns) {
	margin-left: percentage($size / $columns);
}

@mixin make-col-push($size, $columns: $grid-columns) {
	left: if($size > 0, percentage($size / $columns), auto);
}

@mixin make-col-pull($size, $columns: $grid-columns) {
	right: if($size > 0, percentage($size / $columns), auto);
}

@mixin make-col-modifier($type, $size, $columns) {
	// Work around the lack of dynamic mixin @include support (https://github.com/sass/sass/issues/626)
	@if $type == push {
		@include make-col-push($size, $columns);
	} @else if $type == pull {
		@include make-col-pull($size, $columns);
	} @else if $type == offset {
		@include make-col-offset($size, $columns);
	}
}

@mixin make-auto-col() {
	flex-basis: 0;
	flex-grow: 1;
	max-width: 100%;
}