_mixins.scss

@mixin box-shadow($top, $left, $blur, $color, $inset: false) {
  @if $inset {
    -webkit-box-shadow:inset $top $left $blur $color;
    -moz-box-shadow:inset $top $left $blur $color;
    box-shadow:inset $top $left $blur $color;
  } @else {
    -webkit-box-shadow: $top $left $blur $color;
    -moz-box-shadow: $top $left $blur $color;
    box-shadow: $top $left $blur $color;
  }
}

@mixin text-field {
 display: inline-block;
  outline: none;
  text-decoration: none;
  font: 14px/100% Arial, Helvetica, sans-serif;
  padding: .5em;
  text-shadow: 0 1px 1px rgba(0,0,0,.3);
  @include rounded();
  @include box-shadow(0, 1px, 2px, rgba(0, 0, 0, 0.2));
}

@mixin button($color: $red, $text_color: $white) {
  display: inline-block;
  outline: none;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  font: 14px/100% Arial, Helvetica, sans-serif;
  padding: .5em 2em .55em;
  text-shadow: 0 1px 1px rgba(0,0,0,.3);
  @include rounded();
  @include box-shadow(0, 1px, 2px, rgba(0, 0, 0, 0.2));

  color: $text_color !important;
  font-weight: bold;
  border: solid 1px darken($color, 18%);
  background: $color;
  @include gradient(saturate($color, 15%), darken($color, 15%));

  &:hover {
    text-decoration: none;
    background: saturate($color, 10%);
    @include gradient(saturate($color, 5%), darken($color, 5%));
  }

  &:active {
    position: relative;
    top: 1px;
    color: saturate($color, 15%);
    @include gradient(saturate($color, 15%), lighten($color, 15%));
  }
}

@mixin rounded($radius: 0.5em) {
  -webkit-border-radius: $radius;
  -moz-border-radius: $radius;
  border-radius: $radius;
}

@mixin gradient($from, $to) {
  background: -webkit-gradient(linear, left top, left bottom, from($from), to($to));
  background: -moz-linear-gradient(top,  $from, $to);
  filter:  progid:DXImageTransform.Microsoft.gradient(startColorstr='#{$from}', endColorstr='#{$to}');
}