// Adjustments for light background buttons
//
// Lite
// &.github, &.twitter, &.white
//
// Full
// &.cloudapp, &.dropbox, &.gmail, &.instapaper,
// &.openid, &.plancast, &.posterous, &.wikipedia
.adjustment-1
  +box-shadow(inset 0 0.063em 0 rgba(#fff, 0.4), inset 0 0 0.063em rgba(#fff, 0.6), 0 0.063em 0 rgba(#fff, 0.3))
  +text-shadow(0 1px 0 rgba(#fff, 0.8))

// Lite
// &.github:hover > span, &.github:focus > span
// &.twitter:focus > span
//
// Full
// &.plancast:hover > span, &.plancast:focus > span,
// &.posterous:hover > span, &.posterous:focus > span,
// &.dropbox:hover > span, &.dropbox:focus > span,
// &.openid:hover > span, &.openid:focus > span,
// &.instapaper:hover > span, &.instapaper:focus > span,
// &.wikipedia:hover > span, &.wikipedia:focus > span,
// &.gmail:hover > span, &.gmail:focus > span
.adjustment-2
  +background(linear-gradient(top, rgba(#fff, 0.5), rgba(#fff, 0.2) 49%, rgba(#000, 0.05) 51%, rgba(#000, 0.15)))

// Lite
// &.twitter:active > span, &.github:active > span
//
// Full
// &.dropbox:active > span, &.gmail:active > span, &.instapaper:active > span,
// &.openid:active > span, &.plancast:active > span, &.posterous:active > span,
// &.wikipedia:active > span
.adjustment-3
  +background(linear-gradient(bottom, rgba(#fff, 0), rgba(#fff, 0) 30%, rgba(#000, 0) 50%, rgba(#000, 0.1)))