.nes-ui-button-wrapper,
.nes-ui-icon-button-wrapper {
  height: auto;
  @include pixel-borders(
    $corner-size: 1,
    $border-size: $border-size,
    $border-color: 'color-black-absolute',
    $border-inset-color: false
  ); 
  display: flex;
  margin-right: 1em;

  &.nes-ui-border-inverted {
    @include pixel-borders(
      $corner-size: 1,
      $border-size: $border-size,
      $border-color: 'color-white-absolute',
      $border-inset-color: false
    );
  }
}

@mixin btn-style($color, $background, $hover-background, $shadow) {
  color: $color;
  background-color: $background;

  &::after {
    position: absolute;
    top: -$border-size;
    right: -$border-size;
    bottom: -$border-size;
    left: -$border-size;
    content: '';
    box-shadow: inset -4px -4px $shadow;
  }

  &:hover {
    color: $color;
    text-decoration: none;
    background-color: $hover-background;

    &::after {
      box-shadow: inset -4px -4px $shadow;
    }
  }

  &:focus {
    box-shadow: 0 0 0 4px rgba($shadow, 0.3);
  }

  &:active:not(.nes-ui-btn-disabled)::after {
    box-shadow: inset 4px 4px $shadow;
  }
}

.nes-ui-btn,
.nes-ui-icon-btn {
  @include rounded-corners();
  
  position: relative;
  display: inline-block;
  padding-left: 2px;
  padding-top: 2px;
  padding-bottom: 4px;
  padding-right: 4px;
  margin: 0;
  text-align: center;
  vertical-align: middle;
  cursor: var(--cursor-click-url), pointer;
  user-select: none;

  & .nes-ui-text {
    margin: 0;
    color: var(--color-white-absolute);
    margin-left: 4px;
    margin-top: 2px;

    &:first-child {
      margin-right: 4px;
    }
  }

  &:active:not(.nes-ui-btn-disabled) {
    & .nes-ui-text {
      margin-top: -2px;
      margin-left: 2px;

      &:first-child {
        margin-right: 6px;
      }
    }
  }

  @include btn-style(
    $base-color,
    map-get($default-colors, 'normal'),
    map-get($default-colors, 'hover'),
    map-get($default-colors, 'shadow')
  );

  &:focus {
    outline: 0;
  }
  &:active:not(.nes-ui-btn-disabled) {
    padding-left: 4px;
    padding-right: 2px;
    padding-top: 4px;
    padding-bottom: 2px;
  }

  &.nes-ui-btn-disabled,
  &.nes-ui-btn-disabled:hover,
  &.nes-ui-btn-disabled:focus {
    color: $base-color;
    cursor: not-allowed;
    background-color: map-get($disabled-colors, 'normal');
    opacity: 0.6;
  }

  &.nes-ui-btn-disabled:hover::after {
    box-shadow: inset -4px -4px map-get($disabled-colors, 'shadow');
  }

  $types:
    "primary" $background-color map-get($primary-colors, "normal") map-get($primary-colors, "hover") map-get($primary-colors, "shadow"),
    "success" $background-color map-get($success-colors, "normal") map-get($success-colors, "hover") map-get($success-colors, "shadow"),
    "warning" $base-color map-get($warning-colors, "normal") map-get($warning-colors, "hover") map-get($warning-colors, "shadow"),
    "error" $background-color map-get($error-colors, "normal") map-get($error-colors, "hover") map-get($error-colors, "shadow");

  @each $type in $types {
    &.nes-ui-btn-#{nth($type, 1)} {
      @include btn-style(
        nth($type, 2),
        nth($type, 3),
        nth($type, 4),
        nth($type, 5)
      );
    }
  }

  input[type='file'] {
    position: absolute;
    pointer-events: none;
    opacity: 0;
  }

}

.nes-ui-btn {

  &.nes-ui-is-size-small {
    font-size: 75%;
    padding-left: 2px;
    padding-right: 4px;
    padding-top: 0px;
    padding-bottom: 4px;

    &:active:not(.nes-ui-btn-disabled) {
      padding-left: 3px;
      padding-right: 3px;
      padding-top: 1px;
      padding-bottom: 3px;
    }
  }

  &.nes-ui-is-size-large {
    font-size: 125%;
    padding-left: 2px;
    padding-right: 4px;
    padding-top: 0px;
    padding-bottom: 4px;

    &:active:not(.nes-ui-btn-disabled) {
      padding-left: 3px;
      padding-right: 3px;
      padding-top: 1px;
      padding-bottom: 3px;
    }
  }
}


html.nes-ui {

  button,
  .nes-ui-btn,
  input[type='submit'],
  input[type='reset'],
  input[type='button'] {
    &:focus,
    &:hover,
    &:active {
      outline: 0;
    }
  }
}

.nes-ui-button-wrapper,
.nes-ui-icon-button-wrapper {
  @include pixel-borders(
    $corner-size: 1,
    $border-size: $border-size,
    $border-color: 'color-black-absolute',
    $border-inset-color: false
  );
  display: inline-block;
  margin-right: 0;

  &.nes-ui-border-inverted {
    @include pixel-borders(
      $corner-size: 1,
      $border-size: $border-size,
      $border-color: 'color-black-absolute',
      $border-inset-color: false
    ); 
  }
}

.nes-ui-icon-button-wrapper {
  margin-right: 1em;
}

.nes-ui-dark-mode {
  .nes-ui-button-wrapper,
  .nes-ui-icon-button-wrapper {
 
    &.nes-ui-border-inverted {
      @include pixel-borders(
        $corner-size: 1,
        $border-size: $border-size,
        $border-color: 'color-white-absolute',
        $border-inset-color: false
      ); 
    }
  }
}

@mixin btn-style($color, $background, $hover-background, $shadow) {
  color: $color;
  background-color: $background;

  &::after {
    position: absolute;
    top: -$border-size;
    right: -$border-size;
    bottom: -$border-size;
    left: -$border-size;
    content: '';
    box-shadow: inset -4px -4px $shadow;
  }

  &:hover {
    color: $color;
    text-decoration: none;
    background-color: $hover-background;

    &::after {
      box-shadow: inset -4px -4px $shadow;
    }
  }

  &:focus {
    box-shadow: 0 0 0 4px rgba($shadow, 0.3);
  }

  &:active:not(.nes-ui-btn-disabled)::after {
    box-shadow: inset 4px 4px $shadow;
  }
}

.nes-ui-icon-btn {
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;

  &.nes-ui-is-size-small {
    padding-bottom: 4px;
    padding-right: 4px;
  }

  &.nes-ui-is-size-medium {
    padding-bottom: 4px;
    padding-right: 4px;
  }

  &.nes-ui-is-size-large {
    padding-bottom: 4px;
    padding-right: 4px;
  }

  & * {
    display: flex;
    justify-content: center;
    align-items: center;
  }

  & .nes-ui-pixelicon {
    position: relative;
    display: block;
    left: 0;
    top: 0;
  }

  &:active:not(.nes-ui-btn-disabled) {
    padding: 0;
    padding-top: 4px;
    padding-left: 4px;

    & .nes-ui-pixelicon {
      position: relative;
      display: block;
      left: -2px;
      top: -2px;
    }
  }
}