@mixin btn-solid-mktg($color, $bg, $bg2, $bg3, $bg4) {
  color: $color;
  background-color: $bg2;
  background-image: linear-gradient(-180deg, $bg 0%, $bg2 100%);

  &::before {
    background-image: linear-gradient(-180deg, $bg3 0%, $bg4 100%);
  }

  &:hover,
  &.hover,
  &:active,
  &.selected,
  &[aria-selected=true],
  [open] > & {
    background-color: $bg2;
    background-image: linear-gradient(-180deg, $bg 0%, $bg2 100%);
  }

  &:focus,
  &.focus {
    outline: 0;
    box-shadow: 0 0 0 0.2em rgba($bg2, 0.4);
  }

  &:disabled,
  &.disabled,
  &[aria-disabled=true] {
    pointer-events: none;
    cursor: default;
    opacity: 0.5;
  }
}

@mixin btn-outline-mktg($color, $color2, $border, $borderHover, $borderFocus, $borderFocusInset) {
  color: $color;
  background: none;
  box-shadow: 0 0 0 1px $border inset;

  &::before {
    display: none;
  }

  &:hover,
  &.hover,
  &:active,
  &.selected,
  &[aria-selected=true],
  [open] > & {
    color: $color2;
    background: none;
    box-shadow: 0 0 0 2px $borderHover inset;
  }

  &:focus,
  &.focus {
    outline: 0;
    box-shadow: 0 0 0 2px $borderFocus inset, 0 0 0 4px $borderFocusInset;
  }

  &:disabled,
  &.disabled,
  &[aria-disabled=true] {
    opacity: 0.5;
  }
}

$browser-context: 16 !default;

@function rem($pixels, $context: $browser-context) {
  @if (unitless($pixels)) {
    $pixels: $pixels * 1px;
  }

  @if (unitless($context)) {
    $context: $context * 1px;
  }

  @return $pixels / $context * 1rem;
}