// MIXINS
// Snippets of reusable CSS to develop faster and keep code readable
// -----------------------------------------------------------------

// UTILITY MIXINS
// -------------------------------------------------

// Clearfix
// --------
// For clearing floats like a boss h5bp.com/q
=clearfix
  *zoom: 1
  &:before,
  &:after
    display: table
    content: ""
  &:after
    clear: both

// Webkit-style focus
// ------------------
=tab-focus
  // Default
  outline: thin dotted #333
  // Webkit
  outline: 5px auto -webkit-focus-ring-color
  outline-offset: -2px

// Center-align a block level element
// ----------------------------------
=center-block
  display: block
  margin-left: auto
  margin-right: auto

// IE7 inline-block
// ----------------
=ie7-inline-block
  *display: inline
  /* IE7 inline-block hack
  *zoom: 1

// IE7 likes to collapse whitespace on either side of the inline-block elements.
// Ems because we're attempting to match the width of a space character. Left
// version is for form buttons, which typically come after other elements, and
// right version is for icons, which come before. Applying both is ok, but it will
// mean that space between those elements will be .6em (~2 space characters) in IE7,
// instead of the 1 space in other browsers.
=ie7-restore-left-whitespace
  *margin-left: .3em
  &:first-child
    *margin-left: 0

=ie7-restore-right-whitespace
  *margin-right: .3em
  &:last-child
    *margin-left: 0

// Sizing shortcuts
// -------------------------
=size($height: 5px, $width: 5px)
  width: $width
  height: $height

=square($size: 5px)
  +size($size, $size)

// Placeholder text
// -------------------------
=placeholder($color: $placeholderText)
  \:-moz-placeholder
    color: $color
  \::-webkit-input-placeholder
    color: $color

// Text overflow
// -------------------------
// Requires inline-block or block for proper styling
=text-overflow
  overflow: hidden
  text-overflow: ellipsis
  white-space: nowrap

// FONTS
// --------------------------------------------------

// Font Stacks
=font-shorthand($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight)
  font-size: $size
  font-weight: $weight
  line-height: $lineHeight

=font-serif($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight)
  font-family: Georgia, "Times New Roman", Times, serif
  +font-shorthand($size, $weight, $lineHeight)

=font-sans-serif($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight)
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif
  +font-shorthand($size, $weight, $lineHeight)

=font-family-monospace
  font-family: Menlo, Monaco, "Courier New", monospace

=font-monospace($size: $baseFontSize, $weight: normal, $lineHeight: $baseLineHeight)
  +font-family-monospace
  +font-shorthand($size, $weight, $lineHeight)

// GRID SYSTEM
// --------------------------------------------------

// Site container
// -------------------------
=container-fixed
  width: $gridRowWidth
  margin-left: auto
  margin-right: auto
  +clearfix

// Le grid system
// -------------------------
=gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, $columns)
  width: $gridColumnWidth * $columns + $gridGutterWidth * ($columns - 1)

=gridSystem-offset($gridColumnWidth, $gridGutterWidth, $columns)
  margin-left: $gridColumnWidth * $columns + $gridGutterWidth * ($columns - 1) + $gridGutterWidth * 2

=gridSystem-gridColumn($gridGutterWidth)
  float: left
  margin-left: $gridGutterWidth

// Take these values and mixins, and make 'em do their thang
=gridSystem-generate($gridColumns, $gridColumnWidth, $gridGutterWidth)
  // Row surrounds the columns
  .row
    margin-left: $gridGutterWidth * -1
    +clearfix
  // Find all .span# classes within .row and give them the necessary properties for grid columns (supported by all browsers back to IE7, thanks $dhg)
  [class*="span"]
    +gridSystem-gridColumn($gridGutterWidth)
  // Default columns
  @for $i from 1 through $gridColumns
    .span#{$i}
      +gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, $i)
  .container
    +gridSystem-columns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, 12)
  // Offset column options
  @for $i from 1 through $gridColumns - 1
    .offset#{$i}
      +gridSystem-offset($gridColumnWidth, $gridGutterWidth, $i)

// Fluid grid system
// -------------------------
=fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, $columns)
  width: $fluidGridColumnWidth * $columns + $fluidGridGutterWidth * ($columns - 1)

=fluidGridSystem-gridColumn($fluidGridGutterWidth)
  float: left
  margin-left: $fluidGridGutterWidth

// Take these values and mixins, and make 'em do their thang
=fluidGridSystem-generate($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth)
  // Row surrounds the columns
  .row-fluid
    width: 100%
    +clearfix
    // Find all .span# classes within .row and give them the necessary properties for grid columns (supported by all browsers back to IE7, thanks $dhg)
    > [class*="span"]
      +fluidGridSystem-gridColumn($fluidGridGutterWidth)
    > [class*="span"]:first-child
      margin-left: 0
    // Default columns
    @for $i from 1 through $gridColumns
      > .span#{$i}
        +fluidGridSystem-columns($fluidGridGutterWidth, $fluidGridColumnWidth, $i)

// Input grid system
// -------------------------
=inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, $columns)
  width: $gridColumnWidth * $columns + $gridGutterWidth * ($columns - 1) - 10

=inputGridSystem-generate($gridColumns, $gridColumnWidth, $gridGutterWidth)
  input,
  textarea,
  .uneditable-input
    @for $i from 1 through $gridColumns
      &.span#{$i}
        +inputGridSystem-inputColumns($gridGutterWidth, $gridColumnWidth, $gridRowWidth, $i)

// Make a Grid
// -------------------------
// Use .makeRow and .makeColumn to assign semantic layouts grid system behavior
=makeRow
  margin-left: $gridGutterWidth * -1
  +clearfix

=makeColumn($columns: 1)
  float: left
  margin-left: $gridGutterWidth
  width: $gridColumnWidth * $columns + $gridGutterWidth * ($columns - 1)

// Form field states (used in forms.less)
// --------------------------------------------------

// Mixin for form field states
=formFieldState($textColor: #555555, $borderColor: #cccccc, $backgroundColor: whitesmoke)
  // Set the text color
  > label,
  .help-block,
  .help-inline
    color: $textColor
  // Style inputs accordingly
  input,
  select,
  textarea
    color: $textColor
    border-color: $borderColor
    &:focus
      border-color: darken($borderColor, 10%)
      +box-shadow(0 0 6px lighten($borderColor, 20%))
  // Give a small background color for input-prepend/-append
  .input-prepend .add-on,
  .input-append .add-on
    color: $textColor
    background-color: $backgroundColor
    border-color: $textColor

// CSS3 PROPERTIES
// --------------------------------------------------

// Border Radius
=border-radius($radius: 5px)
  -webkit-border-radius: $radius
  -moz-border-radius: $radius
  border-radius: $radius

// Drop shadows
=box-shadow($shadow: 0 1px 3px rgba(0, 0, 0, 0.25))
  -webkit-box-shadow: $shadow
  -moz-box-shadow: $shadow
  box-shadow: $shadow

// Transitions
=transition($transition)
  -webkit-transition: $transition
  -moz-transition: $transition
  -ms-transition: $transition
  -o-transition: $transition
  transition: $transition

// Transformations
=rotate($degrees: 5deg)
  -webkit-transform: rotate($degrees)
  -moz-transform: rotate($degrees)
  -ms-transform: rotate($degrees)
  -o-transform: rotate($degrees)
  transform: rotate($degrees)

=scale($ratio)
  -webkit-transform: scale($ratio)
  -moz-transform: scale($ratio)
  -ms-transform: scale($ratio)
  -o-transform: scale($ratio)
  transform: scale($ratio)

=translate($x: 0, $y: 0)
  -webkit-transform: translate($x, $y)
  -moz-transform: translate($x, $y)
  -ms-transform: translate($x, $y)
  -o-transform: translate($x, $y)
  transform: translate($x, $y)

=skew($x: 0, $y: 0)
  -webkit-transform: translate($x, $y)
  -moz-transform: translate($x, $y)
  -ms-transform: translate($x, $y)
  -o-transform: translate($x, $y)
  transform: translate($x, $y)

=translate3d($x: 0, $y: 0, $z: 0)
  -webkit-transform: translate($x, $y, $z)
  -moz-transform: translate($x, $y, $z)
  -ms-transform: translate($x, $y, $z)
  -o-transform: translate($x, $y, $z)
  transform: translate($x, $y, $z)

// Background clipping
// Heads up: FF 3.6 and under need padding instead of padding-box
=background-clip($clip)
  -webkit-background-clip: $clip
  -moz-background-clip: $clip
  background-clip: $clip

// Background sizing
=background-size($size)
  -webkit-background-size: $size
  -moz-background-size: $size
  -o-background-size: $size
  background-size: $size

// Box sizing
=box-sizing($boxmodel)
  -webkit-box-sizing: $boxmodel
  -moz-box-sizing: $boxmodel
  box-sizing: $boxmodel

// User select
// For selecting text on the page
=user-select($select)
  -webkit-user-select: $select
  -moz-user-select: $select
  -o-user-select: $select
  user-select: $select

// Resize anything
=resizable($direction: both)
  resize: $direction
  // Options: horizontal, vertical, both
  overflow: auto
  // Safari fix

// CSS3 Content Columns
=content-columns($columnCount, $columnGap: $gridColumnGutter)
  -webkit-column-count: $columnCount
  -moz-column-count: $columnCount
  column-count: $columnCount
  -webkit-column-gap: $columnGap
  -moz-column-gap: $columnGap
  column-gap: $columnGap

// Opacity
=opacity($opacity: 100)
  opacity: $opacity / 100
  filter: alpha(opacity = $opacity)

// BACKGROUNDS
// --------------------------------------------------

// Add an alphatransparency value to any background or border color (via Elyse Holladay)
=translucent-background($color: $white, $alpha: 1)
  background-color: hsla(hue($color), saturation($color), lightness($color), $alpha)

=translucent-border($color: $white, $alpha: 1)
  border-color: hsla(hue($color), saturation($color), lightness($color), $alpha)
  +background-clip(padding-box)

// Gradients
=gradient-horizontal($startColor: #555555, $endColor: #333333)
  background-color: $endColor
  background-image: -moz-linear-gradient(left, $startColor, $endColor)
  // FF 3.6+
  background-image: -ms-linear-gradient(left, $startColor, $endColor)
  // IE10
  background-image: -webkit-gradient(linear, 0 0, 100% 0, from($startColor), to($endColor))
  // Safari 4+, Chrome 2+
  background-image: -webkit-linear-gradient(left, $startColor, $endColor)
  // Safari 5.1+, Chrome 10+
  background-image: -o-linear-gradient(left, $startColor, $endColor)
  // Opera 11.10
  background-image: linear-gradient(left, $startColor, $endColor)
  // Le standard
  background-repeat: repeat-x
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$startColor}', endColorstr='#{$endColor}', GradientType=1), $startColor, $endColor
  // IE9 and down

=gradient-vertical($startColor: #555555, $endColor: #333333)
  background-color: mix($startColor, $endColor, 60%)
  background-image: -moz-linear-gradient(top, $startColor, $endColor)
  // FF 3.6+
  background-image: -ms-linear-gradient(top, $startColor, $endColor)
  // IE10
  background-image: -webkit-gradient(linear, 0 0, 0 100%, from($startColor), to($endColor))
  // Safari 4+, Chrome 2+
  background-image: -webkit-linear-gradient(top, $startColor, $endColor)
  // Safari 5.1+, Chrome 10+
  background-image: -o-linear-gradient(top, $startColor, $endColor)
  // Opera 11.10
  background-image: linear-gradient(top, $startColor, $endColor)
  // The standard
  background-repeat: repeat-x
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$startColor}', endColorstr='#{$endColor}', GradientType=0), $startColor, $endColor
  // IE9 and down

=gradient-directional($startColor: #555555, $endColor: #333333, $deg: 45deg)
  background-color: $endColor
  background-repeat: repeat-x
  background-image: -moz-linear-gradient($deg, $startColor, $endColor)
  // FF 3.6+
  background-image: -ms-linear-gradient($deg, $startColor, $endColor)
  // IE10
  background-image: -webkit-linear-gradient($deg, $startColor, $endColor)
  // Safari 5.1+, Chrome 10+
  background-image: -o-linear-gradient($deg, $startColor, $endColor)
  // Opera 11.10
  background-image: linear-gradient($deg, $startColor, $endColor)
  // The standard

=gradient-vertical-three-colors($startColor: #00b3ee, $midColor: #7a43b6, $colorStop: 50%, $endColor: #c3325f)
  background-color: mix($midColor, $endColor, 80%)
  background-image: -webkit-gradient(linear, 0 0, 0 100%, from($startColor), color-stop($colorStop, $midColor), to($endColor))
  background-image: -webkit-linear-gradient($startColor, $midColor $colorStop, $endColor)
  background-image: -moz-linear-gradient(top, $startColor, $midColor $colorStop, $endColor)
  background-image: -ms-linear-gradient($startColor, $midColor $colorStop, $endColor)
  background-image: -o-linear-gradient($startColor, $midColor $colorStop, $endColor)
  background-image: linear-gradient($startColor, $midColor $colorStop, $endColor)
  background-repeat: no-repeat
  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$startColor}', endColorstr='#{$endColor}', GradientType=0), $startColor, $endColor
  // IE9 and down, gets no color-stop at all the proper fallback

=gradient-radial($centerColor: #555555, $outsideColor: #333333)
  background-color: $outerColor
  background-image: -webkit-gradient(radial, center center, 0, center center, 460, from($centerColor), to($outsideColor))
  background-image: -webkit-radial-gradient(circle, $centerColor, $outsideColor)
  background-image: -moz-radial-gradient(circle, $centerColor, $outsideColor)
  background-image: -ms-radial-gradient(circle, $centerColor, $outsideColor)
  background-repeat: no-repeat
  // Opera cannot do radial gradients yet

=gradient-striped($color, $angle: -45deg)
  background-color: $color
  background-image: -webkit-gradient(linear, 0 100%, 100% 0, color-stop(0.25, rgba(255, 255, 255, 0.15)), color-stop(0.25, transparent), color-stop(0.5, transparent), color-stop(0.5, rgba(255, 255, 255, 0.15)), color-stop(0.75, rgba(255, 255, 255, 0.15)), color-stop(0.75, transparent), to(transparent))
  background-image: -webkit-linear-gradient($angle, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent)
  background-image: -moz-linear-gradient($angle, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent)
  background-image: -ms-linear-gradient($angle, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent)
  background-image: -o-linear-gradient($angle, rgba(255, 255, 255, 0.15) 25%, transparent 25%, transparent 50%, rgba(255, 255, 255, 0.15) 50%, rgba(255, 255, 255, 0.15) 75%, transparent 75%, transparent)
  //background-image: linear-gradient($angle, rgba(255,255,255,.15) 25%, transparent 25%, transparent 50%, rgba(255,255,255,.15) 50%, rgba(255,255,255,.15) 75%, transparent 75%, transparent);

// Gradient Bar Colors for buttons and alerts
=gradientBar($primaryColor, $secondaryColor)
  +gradient-vertical($primaryColor, $secondaryColor)
  border-color: $secondaryColor $secondaryColor darken($secondaryColor, 15%)
  border-color: rgba(0, 0, 0, 0.1) rgba(0, 0, 0, 0.1) fade-in(rgba(0, 0, 0, 0.1), 0.15)

// Reset filters for IE
=reset-filter
  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false)

// Mixin for generating button backgrounds
// ---------------------------------------
=buttonBackground($startColor, $endColor)
  // gradientBar will set the background to a pleasing blend of these, to support IE<=9
  +gradientBar($startColor, $endColor)
  +reset-filter
  // in these cases the gradient won't cover the background, so we override
  &:hover, &:active, &.active, &.disabled, &[disabled]
    background-color: $endColor
  // IE 7 + 8 can't handle box-shadow to show active, so we darken a bit ourselves
  &:active,
  &.active
    background-color: darken($endColor, 10%) #{"\9"}

// COMPONENT MIXINS
// --------------------------------------------------

// POPOVER ARROWS
// -------------------------
// For tipsies and popovers
=popoverArrow-top($arrowWidth: 5px)
  bottom: 0
  left: 50%
  margin-left: -$arrowWidth
  border-left: $arrowWidth solid transparent
  border-right: $arrowWidth solid transparent
  border-top: $arrowWidth solid $black

=popoverArrow-left($arrowWidth: 5px)
  top: 50%
  right: 0
  margin-top: -$arrowWidth
  border-top: $arrowWidth solid transparent
  border-bottom: $arrowWidth solid transparent
  border-left: $arrowWidth solid $black

=popoverArrow-bottom($arrowWidth: 5px)
  top: 0
  left: 50%
  margin-left: -$arrowWidth
  border-left: $arrowWidth solid transparent
  border-right: $arrowWidth solid transparent
  border-bottom: $arrowWidth solid $black

=popoverArrow-right($arrowWidth: 5px)
  top: 50%
  left: 0
  margin-top: -$arrowWidth
  border-top: $arrowWidth solid transparent
  border-bottom: $arrowWidth solid transparent
  border-right: $arrowWidth solid $black