$scrollableArea: 2000px
$exampleWidth: 400px
$exampleHeight: 180px

@mixin inline-block
  display: inline-block
  vertical-align: middle
  *vertical-align: auto
  *zoom: 1
  *display: inline

*, *:after, *:before
  box-sizing: border-box

body
  position: relative

.yellow-box
  width: 100px
  height: 100px
  background-color: #fe8
  pointer-events: none

.green-box
  margin-top: ($exampleHeight - 50px) / 2
  margin-left: ($exampleWidth - 200px) / 2
  width: 200px
  height: 50px
  background-color: #4e9

  .no-green &
    display: none

.scroll-box
  height: 150px
  border: 10px solid #eee
  background: #fbfbfb
  overflow: auto
  position: relative

.scroll-content
  height: $scrollableArea
  width: $scrollableArea
  padding: ($scrollableArea - $exampleHeight)/2 ($scrollableArea - $exampleWidth)/2 + 9

pre.pre-with-output
  margin: 0
  width: 50%
  float: left

  code mark
    background: #b8daff
    color: #000

p, h2, h3
  clear: both

output
  display: block
  position: relative
  width: 50%
  float: right
  margin-bottom: 15px

  &.scroll-page
    .scroll-box
      overflow: hidden

    &:after
      content: "↕ scroll the page ↕"

  &:after
    content: "↕ scroll this area ↕"
    position: absolute
    bottom: 25px
    width: 100%
    text-align: center
    font-size: 16px
    font-variant: small-caps
    color: #777
    opacity: 1
    transition: opacity 0.2s

  &.scrolled:after
    opacity: 0

  &[deactivated], &[activated]
    .scroll-box
      pointer-events: none

    cursor: pointer

    &:after
      position: absolute
      top: 0
      left: 0
      right: 0
      bottom: 0
      opacity: 1
      content: "Click To Show"
      background-color: #AAA
      border-left: 10px solid #EEE
      color: white
      font-size: 24px
      font-variant: normal
      padding-top: 80px

  &[activated]
    &:after
      content: "Click To Hide"

    &.visible-enabled
      &:after
        height: 35px
        padding-top: 5px

.attachment-mark
  position: relative

  &:after
    content: "A"
    width: 10px
    height: 10px
    background-color: red
    display: inline-block

    line-height: 10px
    font-size: 9px
    color: white
    text-align: center

    position: absolute

span.attachment-mark
  &:after
    position: relative
    top: -1px
    margin-right: 1px

.tether-marker-dot
  @extend .attachment-mark

  position: absolute

  &:after
    top: -5px
    left: -5px

@each $type in target, element
  .tether-#{ $type }-marker
    position: absolute

    @each $side in left, top, bottom, right
      div.tether-#{ $type }-attached-#{ $side } &
        #{ $side }: 0

    div.tether-#{ $type }-attached-center &
      left: 50%

.tether-element-attached-middle .tether-element-marker
  top: 50px

.tether-target-attached-middle .tether-target-marker
  top: 25px

.tether-element
  position: relative

  &.tether-pinned-left
    box-shadow: inset 2px 0 0 0 red
  &.tether-pinned-right
    box-shadow: inset -2px 0 0 0 red
  &.tether-pinned-top
    box-shadow: inset 0 2px 0 0 red
  &.tether-pinned-bottom
    box-shadow: inset 0 -2px 0 0 red

.tether-target
  position: relative

.tether-element.tether-out-of-bounds[data-example="hide"]
  display: none

[data-example^="optimizer"]
  &.lang-javascript
    /* This should just be a `code` selector, but sass doesn't allow that with & */
    min-height: 220px

  &.tether-element

    &:before
      margin-top: 26px
      display: block
      text-align: center
      content: "I'm in the body"
      line-height: 1.2
      font-size: 15px
      padding: 4px
      color: #666

  .scroll-box .tether-element:before
    content: "I'm in my scroll parent!"

.tether-element[data-example="scroll-visible"]
  height: 30px

  .tether-marker-dot
    display: none

.hs-doc-content h2.projects-header
  text-align: center
  font-weight: 300

.projects-paragraph
  text-align: center

  a
    +inline-block
    text-align: center
    margin-right: 30px
    color: inherit

    span
      +inline-block
      margin-bottom: 20px
      font-size: 20px
      color: inherit
      font-weight: 300

    img
      display: block
      max-width: 100%
      width: 100px