// Framework grid generation
@mixin make-grid-columns($i: 1, $list: ".col-#{$i}") {
  @for $i from (1 + 1) through $grid-columns {
    $list: "#{$list}, .col-#{$i}";
  }

  #{$list} {
    position: relative;
    // Prevent columns from collapsing when empty
    min-height: 1px;
    // Inner gutter via padding
    padding-left:  ceil(($grid-gutter-width / 2));
    padding-right: floor(($grid-gutter-width / 2));
  }
}


// [converter] This is defined recursively in LESS, but Sass supports real loops
@mixin float-grid-columns($i: 1, $list: ".col-#{$i}") {
  @for $i from (1 + 1) through $grid-columns {
    $list: "#{$list}, .col-#{$i}";
  }

  #{$list} {
    float: left;
  }
}


@mixin calc-grid-column($index, $type) {
  @if ($type == width) and ($index > 0) {

    .col-#{$index} {
      width: percentage(($index / $grid-columns));
    }
  }
  @if ($type == push) and ($index > 0) {

    .col-push-#{$index} {
      left: percentage(($index / $grid-columns));
    }
  }
  @if ($type == push) and ($index == 0) {

    .col-push-0 {
      left: auto;
    }
  }
  @if ($type == pull) and ($index > 0) {

    .col-pull-#{$index} {
      right: percentage(($index / $grid-columns));
    }
  }
  @if ($type == pull) and ($index == 0) {

    .col-pull-0 {
      right: auto;
    }
  }
  @if ($type == offset) {

    .col-offset-#{$index} {
      margin-left: percentage(($index / $grid-columns));
    }
  }
}

// [converter] This is defined recursively in LESS, but Sass supports real loops
@mixin loop-grid-columns($columns, $type) {
  @for $i from 0 through $columns {
    @include calc-grid-column($i, $type);
  }
}


// Create grid for specific class
@mixin make-grid() {
  @include float-grid-columns();
  @include loop-grid-columns($grid-columns, width);
  @include loop-grid-columns($grid-columns, pull);
  @include loop-grid-columns($grid-columns, push);
  @include loop-grid-columns($grid-columns, offset);
}