Chatwoot/app/javascript/widget/assets/scss/_buttons.scss

$button-border-width: 1px;
// Buttons
.button {
  appearance: none;
  background: $color-primary;
  border: $button-border-width solid $color-primary;
  border-radius: $border-radius;
  color: $color-white;
  cursor: pointer;
  display: inline-block;
  font-size: $font-size-default;
  height: $space-two * 2;
  line-height: $line-height;
  outline: none;
  padding: $space-smaller $space-normal;
  text-align: center;
  text-decoration: none;
  transition: background .2s, border .2s, box-shadow .2s, color .2s;
  user-select: none;
  vertical-align: middle;
  white-space: nowrap;

  &:focus,
  &:hover {
    background: lighten($color-primary, 7%);
    border-color: $color-primary;
    text-decoration: none;
  }

  &:active,
  &.active {
    background: $color-primary;
    border-color: darken($color-primary, 5%);
    color: lighten($color-primary, 20%);
    text-decoration: none;
  }

  &[disabled],
  &:disabled,
  &.disabled {
    cursor: default;
    opacity: .5;
    pointer-events: none;
  }

  &.small {
    font-size: $font-size-small;
    height: $space-medium;
    padding: $space-smaller $space-slab;
  }

  &.large {
    font-size: $font-size-medium;
    height: $space-larger;
    padding: $space-small $space-medium;
  }

  &.block {
    width: 100%;
  }

  &.transparent {
    background: transparent;
    border: 0;
    height: auto;
  }

  &.compact {
    padding: 0;
  }
}