//
// @variables

$primary-color: $indigo !default;
$secondary-color: $whitelilac !default;
$alert-color: $red !default;
$normal-color: $white;

$button-transition-duration: .2s;
$button-transition-timing-function: ease;

// all buttons min width
$button-min-width: rem-calc(100) !default;

// all buttons padding right and left
$button-padding-rl: rem-calc(12) !default;

// padding top and bottom for buttons.
$button-tny: rem-calc(7) !default;
$button-sml: rem-calc(8) !default;
$button-med: rem-calc(11) !default;
$button-lrg: rem-calc(13) !default;

// the display property.
$button-display: inline-block !default;
$button-margin-bottom: rem-calc(0) !default;

// button text styles.
$button-font-family: $body-font-family !default;
$button-font-color: $white !default;

$button-font-tny: $base-font-size-sml !default;
$button-font-sml: $body-font-size !default;
$button-font-med: $body-font-size !default;
$button-font-lrg: $body-font-size !default;
$button-font-weight: $font-weight-normal !default;
$button-font-align: center !default;

// hover effects.
$button-function-factor: -5% !default;

// active / keypress effects
$button-active-function-factor: -20% !default;

// We use these to control button border styles.
$button-border-width: 0 !default;
$button-border-style: solid !default;

$button-bg-color: $primary-color !default;
$button-bg-hover: scale-color($button-bg-color, $lightness: $button-function-factor) !default;
$button-bg-active: scale-color($button-bg-color, $lightness: $button-active-function-factor) !default;


$secondary-button-bg-color: $secondary-color !default;
$secondary-button-bg-hover: scale-color($secondary-color, $lightness: $button-function-factor) !default;
$secondary-button-bg-active: scale-color($secondary-color, $lightness: $button-active-function-factor) !default;
$secondary-button-font-color: $bistre !default;

$alert-button-bg-color: $alert-color !default;
$alert-button-bg-hover: scale-color($alert-color, $lightness: $button-function-factor) !default;
$alert-button-bg-active: scale-color($alert-color, $lightness: $button-active-function-factor) !default;

$normal-button-bg-color: $normal-color;
$normal-button-bg-hover: scale-color($normal-button-bg-color, $lightness: $button-function-factor) !default;
$normal-button-bg-active: scale-color($normal-button-bg-color, $lightness: $button-active-function-factor) !default;
$normal-button-font-color: $base-font-color-info;


// the default radius used throughout the core.
$button-radius: $global-radius !default;
$button-round: $global-radius !default;

// set default opacity and cursor for disabled buttons.
$button-disabled-opacity: .7 !default;
$button-disabled-cursor: $cursor-default-value !default;


//
// @MIXIN
//
// We use this mixin to create a default button base.
//
// $style - Sets base styles. Can be set to false. Default: true.
// $display - Used to control display property. Default: $button-display || inline-block

@mixin button-base($display:$button-display) {
    -webkit-appearance: none;
    -moz-appearance: none;
    box-shadow: none;
    border-radius:$button-radius;
    border-style: $button-border-style;
    border-width: $button-border-width;
    padding-left: $button-padding-rl;
    padding-right: $button-padding-rl;
    min-width: $button-min-width;
    cursor: $cursor-pointer-value;
    font-family: $button-font-family;
    font-weight: $button-font-weight;
    line-height: 1;
    margin: 0 0 $button-margin-bottom;
    position: relative;
    text-align: $button-font-align;
    text-decoration: none;
    outline: none;
    color: $button-font-color;
  @if $display { display: $display; }
}

// @MIXIN
//
// We use this mixin to add button size styles
//
// $padding - Used to build padding for buttons Default: $button-med ||= rem-calc(12)

@mixin button-size($padding:$button-med) {

  // We control which padding styles come through
  padding-top: $padding;
  padding-bottom: $padding;
  // We control the font-size based on mixin input.
  @if      $padding == $button-med { font-size: $button-font-med;}
  @else if $padding == $button-tny { font-size: $button-font-tny; }
  @else if $padding == $button-sml { font-size: $button-font-sml; }
  @else if $padding == $button-lrg { font-size: $button-font-lrg; }

}

// @MIXIN
//
// we use this mixin to create the button hover and border colors

// @MIXIN
//
// We use this mixin to add button color styles
//
// $bg - Background color. We can set $bg:false for a transparent background. Default: $primary-color.
// $radius - If true, set to button radius which is $button-radius || explicitly set radius amount in px (ex. $radius:10px). Default: false
// $disabled - We can set $disabled:true to create a disabled transparent button. Default: false
// $bg-hover - Button Hover Background Color. Default: $button-bg-hover
@mixin button-style($bg:$button-bg-color, $disabled:false, $bg-hover:$button-bg-hover, $bg-active:$button-bg-active, $color:$button-font-color) {

  color: $color;
  // We control which background styles are used,
  // these can be removed by setting $bg:false
    
  background-color: $bg;

  @if $disabled == false {
    &:hover,
    &:focus { background-color: $bg-hover; }
    &:active { background-color: $bg-active; }
  }

  // We can set $disabled:true to create a disabled transparent button.
  @if $disabled {
    cursor: $button-disabled-cursor;
    opacity: $button-disabled-opacity;
  }

}


// class
button, .button, .btn {
  @include button-base;
  @include button-size;
  @include button-style;

  @include single-transition(background-color, $button-transition-duration, $button-transition-timing-function);

  &.btn-primary { @include button-style($bg:$button-bg-color, $bg-hover:$button-bg-hover, $bg-active: $button-bg-active); }
  &.btn-secondary,
  &.btn-cancel { @include button-style($bg:$secondary-button-bg-color, $bg-hover:$secondary-button-bg-hover, $bg-active: $secondary-button-bg-active, $color: $secondary-button-font-color); }
  &.btn-alert { @include button-style($bg:$alert-button-bg-color, $bg-hover:$alert-button-bg-hover, $bg-active: $alert-button-bg-active); }

  &.btn-normal { @include button-style($bg:$normal-button-bg-color, $bg-hover:$normal-button-bg-hover, $bg-active: $normal-button-bg-active, $color: $normal-button-font-color); }
  
  &.btn-tny   { @include button-size($padding:$button-tny); }
  &.btn-sml  { @include button-size($padding:$button-sml); }
  &.btn-med   { @include button-size($padding:$button-med); }
  &.btn-lrg  { @include button-size($padding:$button-lrg); }

  &.disabled, &[disabled] { @include button-style($bg:$button-bg-color, $disabled:true, $bg-hover:$button-bg-hover);
    &.btn-primary { @include button-style($bg:$button-bg-color, $disabled:true, $bg-hover:$button-bg-hover); }
    &.btn-cancel { @include button-style($bg:$secondary-button-bg-color, $disabled:true, $color: $secondary-button-font-color); }
    &.btn-alert { @include button-style($bg:$alert-button-bg-color, $disabled:true, $bg-hover:$alert-button-bg-hover); }
  }
}

//firefox 2px fix
button::-moz-focus-inner {border:0; padding:0;}