/* ###### 9.4 Margin   ###### */

@mixin margin-variant($num, $viewport:"") {

  @if $viewport == "" {
    $viewport: "-";
  } @else {
    $viewport: "-" + $viewport + "-";
  }

  //ie. .mg-sm-0
  //ie. .mg-sm-0-f
  .mg#{$viewport}#{$num} { margin: #{$num}px; }
  .mg#{$viewport}#{$num}-f { margin: #{$num}px !important; }

  //ie. .mg-sm-y-0
  .mg#{$viewport}y-#{$num} {
    margin-top: #{$num}px;
    margin-bottom: #{$num}px;
  }

  //ie. .mg-sm-y-0-f
  .mg#{$viewport}y-#{$num}-f {
    margin-top: #{$num}px !important;
    margin-bottom: #{$num}px !important;
  }

  //ie. .mg-sm-x-0
  .mg#{$viewport}x-#{$num} {
    margin-left: #{$num}px;
    margin-right: #{$num}px;
  }

  //ie. .mg-sm-x-0-f
  .mg#{$viewport}x-#{$num}-f {
    margin-left: #{$num}px !important;
    margin-right: #{$num}px !important;
  }

  //ie. .mg-sm-t-0
  .mg#{$viewport}t-#{$num} { margin-top: #{$num}px; }
  .mg#{$viewport}r-#{$num} { margin-right: #{$num}px; }
  .mg#{$viewport}b-#{$num} { margin-bottom: #{$num}px; }
  .mg#{$viewport}l-#{$num} { margin-left: #{$num}px; }

  //ie. .mg-sm-t-0-f
  .mg#{$viewport}t-#{$num}-f { margin-top: #{$num}px !important; }
  .mg#{$viewport}r-#{$num}-f { margin-right: #{$num}px !important; }
  .mg#{$viewport}b-#{$num}-f { margin-bottom: #{$num}px !important; }
  .mg#{$viewport}l-#{$num}-f { margin-left: #{$num}px !important; }
}

@mixin do-margin-variant($viewport) {
  $num: 0;
  @while $num < 10 {
    @include margin-variant($num, $viewport);
    $num: $num + 1;
  }

  //margin: 10x to 100px with step of 5px
  $num: 10;
  @while $num <= 100 {
    @include margin-variant($num, $viewport);
    $num: $num + 5;
  }
}


//margin: 0px to 9px
$num: 0;
@while $num < 10 {
  @include margin-variant($num);
  $num: $num + 1;
}

//margin: 10x to 120px with step of 5px
$num: 10;
@while $num <= 120 {
  @include margin-variant($num);
  $num: $num + 5;
}

.mg-t-auto { margin-top: auto; }
.mg-r-auto { margin-right: auto; }
.mg-b-auto { margin-bottom: auto; }
.mg-l-auto { margin-left: auto; }
.mg-x-auto { margin: auto; }

@mixin margin-breakpoint($viewport) {

  .mg-#{$viewport}-t-auto { margin-top: auto; }
  .mg-#{$viewport}-r-auto { margin-right: auto; }
  .mg-#{$viewport}-b-auto { margin-bottom: auto; }
  .mg-#{$viewport}-l-auto { margin-left: auto; }
  .mg-#{$viewport}-auto { margin: auto; }
  .mg-#{$viewport}-x-auto {
    margin-left: auto;
    margin-right: auto;
  }
}

@media (min-width: 480px) {
  @include do-margin-variant("xs");
  @include margin-breakpoint("xs");
}

@include media-breakpoint-up(sm) {
  @include do-margin-variant("sm");
  @include margin-breakpoint("sm");
}

@include media-breakpoint-up(md) {
  @include do-margin-variant("md");
  @include margin-breakpoint("md");
}

@include media-breakpoint-up(lg) {
  @include do-margin-variant("lg");
  @include margin-breakpoint("lg");
}

@include media-breakpoint-up(xl) {
  @include do-margin-variant("xl");
  @include margin-breakpoint("xl");
}
