button, a.button
  display inline-block
  height 48px
  padding 6px 0
  text-align center
  border none
  background transparent
  text-transform uppercase
  font-size 14px
  font-weight 500

  span
    border-radius 2px
    display inline-block
    height: 36px
    line-height 36px
    padding 0 16px
    img
      vertical-align middle
  &:disabled, &.disabled
    cursor not-allowed

  // Visual styles
  &.primary
    span
      primary-block()
      shadow-1()
    &:disabled, &.disabled
      span
        box-shadow none
        background-color rgba(0,0,0,.12)
        color rgba(0,0,0,.26)
        img.icon
          opacity .26

  &.flat
    &:disabled, &.disabled
      span
        color $text_disabled
        img.icon
          opacity $opacity_disabled

  &.icon
    span
      width 36px
      height 36px
      padding 0