$radio-size           ?= $generic-input-size + $generic-input-border-width
$radio-picker-size    ?= 12px
$radio-tick-thickness ?= 2px
$radio-border         ?= 1px solid $form-darker-color

.quasar-radio
  display inline-block
  height $radio-size
  width $radio-size
  vertical-align middle
  border 1px solid $form-darker-color
  border-radius $generic-border-radius

  input
    display none !important

  input + div
    position relative

    &:after
      content ''
      position absolute
      opacity 0
      top 0
      left ($radio-size / 3)
      width (.36 * $radio-size)
      height (.75 * $radio-size)
      border-top none
      border-left none
      border-right $radio-tick-thickness solid $form-active-color
      border-bottom $radio-tick-thickness solid $form-active-color
      transform rotate(45deg)
      transition all .3s ease

  for $name, $color in $colors
    &.{$name} input:checked + div:after
      border-color $color

input:checked + div
  &:after
    opacity 1