@use "sass:string";
@use "sass:list";

// Base styles

.btn {
  color: $body-color-alt;
  background-color: transparent;
  border: $btn-border-width solid transparent;

  &:hover {
    color: $body-color-alt;
  }

  // --------------------------------------------------
  // !!!! Interpolation fix/hack, for issue #32
  // --------------------------------------------------
  $in: str-split(#{&});
  $a1: #{null};
  $a2: #{null};
  @if length($in) < 2 {
    $a2: nth($in, 1);
  } @else {
    @for $i from 1 through length($in) - 1 {
      $a1: append($a1, nth($in, $i), space);
    }
    $a2: nth($in, -1);  // last one
  }

  @at-root #{$a1} .btn-check:focus + #{$a2},
  #{$a1} #{$a2}:focus {
    box-shadow: $btn-focus-box-shadow-alt;
  }

  @at-root #{$a1} .btn-check:checked + #{$a2},
  #{$a1} .btn-check:active + #{$a2},
  #{$a1} #{$a2}:active,
  #{$a1} #{$a2}.active {
    @include box-shadow($btn-active-box-shadow-alt);

    &:focus {
      @include box-shadow($btn-focus-box-shadow-alt, $btn-active-box-shadow-alt);
    }
  }

  @at-root #{$a1} #{$a2}:disabled,
  #{$a1} #{$a2}.disabled,
  #{$a1} fieldset:disabled #{$a2} {
    opacity: $btn-disabled-opacity-alt;
    @include box-shadow(none);
  }
}


// Alternate buttons

@each $color, $value in $theme-colors-alt {
  .btn-#{$color} {
    @include button-variant-alt($value, $value);
  }
}

@each $color, $value in $theme-colors-alt {
  .btn-outline-#{$color} {
    @include button-outline-variant-alt($value);
  }
}

// Link buttons

// Make a button look and behave like a link
.btn-link {
  color: $btn-link-color-alt;

  &:hover {
    color: $btn-link-hover-color-alt;
  }

  &:disabled,
  &.disabled {
    color: $btn-link-disabled-color-alt;
  }
}