@mixin button-variant($font-color, $bg-color) {
  color: $font-color;
  background-color: $bg-color;

  &:hover,
  &:focus,
  &:active,
  .mui-open > &.mui-dropdown-toggle {
    color: $font-color;
    background-color: lighten($bg-color, 5%);
  }

  &[disabled],
  fieldset[disabled] & {
    &,
    &:hover,
    &:focus,
    &:active {
      color: $font-color;
      background-color: $bg-color;
    }
  }
}

@mixin button-flat-variant($font-color, $bg-color-hover) {
  &.mui-btn-flat {
    color: $font-color;
    background-color: transparent;

    &:hover,
    &:focus,
    &:active,
    .mui-open > &.mui-dropdown-toggle {
      color: $font-color;
      background-color: $bg-color-hover;
    }

    &[disabled],
    fieldset[disabled] & {
      &,
      &:hover,
      &:focus,
      &:active {
        color: $font-color;
        background-color: transparent;
      }
    }
  }
}

// Button sizes
@mixin button-size($padding-vertical, $padding-horizontal, $font-size,
                   $line-height, $border-radius) {
  padding: ($padding-vertical + 1px) ($padding-horizontal + 1px);
  font-size: $font-size;
  line-height: $line-height;
  border-radius: $border-radius;
}