// Framework grid generation
//
// Used only by Bootstrap to generate the correct number of grid classes given
// any value of `$grid-columns`.

@mixin make-grid-columns($columns: $grid-columns, $gutters: $grid-gutter-widths, $breakpoints: $grid-breakpoints) {
	// Common properties for all breakpoints
	%grid-column {
		position: relative;
		width: 100%;
		min-height: 1px; // Prevent columns from collapsing when empty

		@include make-gutters($gutters);
	}

	@each $breakpoint in map-keys($breakpoints) {
		$infix: breakpoint-infix($breakpoint, $breakpoints);

		// Allow columns to stretch full width below their breakpoints
		@for $i from 1 through $columns {
			.col#{$infix}-#{$i} {
				@extend %grid-column;
			}
		}
		.col#{$infix} {
			@extend %grid-column;
		}

		@include media-breakpoint-up($breakpoint, $breakpoints) {
			// Provide basic `.col-{bp}` classes for equal-width flexbox columns
			.col#{$infix} {
				flex-basis: 0;
				flex-grow: 1;
				max-width: 100%;
			}
			.col#{$infix}-auto {
				flex: 0 0 auto;
				width: auto;
			}

			@for $i from 1 through $columns {
				.col#{$infix}-#{$i} {
					@include make-col($i, $columns);
				}
			}

			@each $modifier in (pull, push) {
				@for $i from 0 through $columns {
					.#{$modifier}#{$infix}-#{$i} {
						@include make-col-modifier($modifier, $i, $columns)
					}
				}
			}

			// `$columns - 1` because offsetting by the width of an entire row isn't possible
			@for $i from 0 through ($columns - 1) {
				@if not ($infix == "" and $i == 0) { // Avoid emitting useless .offset-xs-0
					.offset#{$infix}-#{$i} {
						@include make-col-modifier(offset, $i, $columns)
					}
				}
			}
		}
	}
}