//
// Alert Variables
//
$include-html-alert-classes ?= $include-html-classes;

// We use this to control alert padding.
$alert-padding-top ?= emCalc(11px);
$alert-padding-default-float ?= $alert-padding-top;
$alert-padding-opposite-direction ?= $alert-padding-top + emCalc(10px);
$alert-padding-bottom ?= $alert-padding-top + emCalc(1px);

// We use these to control text style.
$alert-font-weight ?= bold;
$alert-font-size ?= emCalc(14px);
$alert-font-color ?= #fff;
$alert-font-color-alt ?= darken($secondary-color, 60%);

// We use this for close hover effect.
$alert-function-factor ?= 10%;

// We use these to control border styles.
$alert-border-style ?= solid;
$alert-border-width ?= 1px;
$alert-border-color ?= darken($primary-color, $alert-function-factor);
$alert-bottom-margin ?= emCalc(20px);

// We use these to style the close buttons
$alert-close-color ?= #333;
$alert-close-position ?= emCalc(5px);
$alert-close-font-size ?= emCalc(22px);
$alert-close-opacity ?= 0.3;
$alert-close-opacity-hover ?= 0.5;
$alert-close-padding ?= 5px 4px 4px;

// We use this to control border radius
$alert-radius ?= $global-radius;

//
// Alert Mixins
//

// We use this mixin to create a default alert base.
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
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.
alert-close() {
  font-size: $alert-close-font-size;
  padding: $alert-close-padding;
  line-height: 0;
  position: absolute;
  top: $alert-close-position + emCalc(2px);
  {$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.
alert($bg=$primary-color, $radius=false) {
  alert-base();
  alert-style($bg);
  radius($radius);
}

if $include-html-alert-classes != false {
  /* Foundation Alerts */
  .alert-box {
    alert();

    .close {
      alert-close();
    }

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

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