//
// Alert Box Variables
//
$include-html-alert-classes: $include-html-classes !default;

// We use this to control alert padding.
$alert-padding-top: em-calc(11) !default;
$alert-padding-default-float: $alert-padding-top !default;
$alert-padding-opposite-direction: $alert-padding-top + em-calc(10) !default;
$alert-padding-bottom: $alert-padding-top + em-calc(1) !default;

// We use these to control text style.
$alert-font-weight: bold !default;
$alert-font-size: em-calc(14) !default;
$alert-font-color: #fff !default;
$alert-font-color-alt: darken($secondary-color, 60%) !default;

// We use this for close hover effect.
$alert-function-factor: 10% !default;

// We use these to control border styles.
$alert-border-style: solid !default;
$alert-border-width: 1px !default;
$alert-border-color: darken($primary-color, $alert-function-factor) !default;
$alert-bottom-margin: em-calc(20) !default;

// We use these to style the close buttons
$alert-close-color: #333 !default;
$alert-close-position: em-calc(5) !default;
$alert-close-font-size: em-calc(22) !default;
$alert-close-opacity: 0.3 !default;
$alert-close-opacity-hover: 0.5 !default;
$alert-close-padding: 5px 4px 4px !default;

// We use this to control border radius
$alert-radius: $global-radius !default;

//
// Alert Mixins
//

// We use this mixin to create a default alert base.
@mixin alert-base {
  border-style: $alert-border-style;
  border-width: $alert-border-width;
  display: block;
  font-weight: $alert-font-weight;
  margin-bottom: $alert-bottom-margin;
  position: relative;
  padding: $alert-padding-top $alert-padding-opposite-direction $alert-padding-bottom $alert-padding-default-float;
  font-size: $alert-font-size;
}

// We use this mixin to add alert styles
@mixin alert-style($bg:$primary-color) {

  // This find the lightness percentage of the background color.
  $bg-lightness: lightness($bg);

  // We control which background color and border come through.
  background-color: $bg;
  border-color: darken($bg, $alert-function-factor);

  // We control the text color for you based on the background color.
  @if $bg-lightness > 70% { color: $alert-font-color-alt; }
  @else                   { color: $alert-font-color; }

}

// We use this to create the close button.
@mixin alert-close {
  font-size: $alert-close-font-size;
  padding: $alert-close-padding;
  line-height: 0;
  position: absolute;
  top: $alert-close-position + em-calc(2);
  #{$opposite-direction}: $alert-close-position;
  color: $alert-close-color;
  opacity: $alert-close-opacity;
  &:hover,
  &:focus { opacity: $alert-close-opacity-hover; }
}

// We use this to quickly create alerts with a single mixin.
@mixin alert($bg:$primary-color, $radius:false) {
  @include alert-base;
  @include alert-style($bg);
  @include radius($radius);
}

@if $include-html-alert-classes != false {

  /* Foundation Alerts */
  .alert-box {
    @include alert;

    .close { @include alert-close; }

    &.radius { @include radius($alert-radius); }
    &.round { @include radius($global-rounded); }

    &.success { @include alert-style($success-color); }
    &.alert { @include alert-style($alert-color); }
    &.secondary { @include alert-style($secondary-color); }
  }

}
