//
// Button
// -----------------------------------


$button-min-width:        8em !default;
$button-margin:           .75em 2em !default;
$button-margin-large:     1em 3em !default;
$button-border-radius:    4em !default;
$button-color-background: $base-color-brand !default;
$button-border:           1px solid $button-color-background !default;
$button-shadow:           $base-shadow !default;
$button-font-size:        $base-font-size !default;
$button-font-size-small:  $base-font-size-small !default;
$button-font-size-medium: $base-font-size-medium !default;
$button-font-size-large:  $base-font-size-large !default;
$button-font-size-xlarge: $base-font-size-xlarge !default;

$burger-bar-width:  24px !default;
$burger-bar-height: 1px !default;
$burger-bar-color:  #000 !default;

$button-icon-size:  3em !default;


@mixin button-reset-styles() {
  padding: 0;
  line-height: 1;
  min-width: initial;
  min-width: auto;
}


.button {
  display: inline-block;
  min-width: $button-min-width;
  padding: $button-margin;
  border-radius: $button-border-radius;
  text-align: center;
  color: #fff;
  background-color: $button-color-background;
  border: $button-border;
  text-decoration: none;
  line-height: $base-line-height;
  font-size: $button-font-size;
  font-weight: $base-font-weight-medium;
  cursor: pointer;

  & + .button {
    margin-left: .625rem;
  }

  &:active {
    @include outline-active();
  }


  // Small size

  &.is-small {
    font-size: $button-font-size-small;
  }


  // Medium size

  &.is-medium {
    font-size: $base-font-size-medium;
  }


  // Large size

  &.is-large {
    font-size: $base-font-size-large;
  }


  // White color

  &.is-white {
    background-color: #fff;
    border-color: $base-color-button-border;
    color: $base-color-text;
  }


  // Black color

  &.is-black {
    background-color: #000;
    border-color: #000;
    color: #fff;
  }


  // Primary color

  &.is-primary {
    background-color: $base-color-primary;
    border-color: $base-color-primary;
    color: #fff;
  }


  // Secondary color

  &.is-secondary {
    background-color: $base-color-secondary;
    border-color: $base-color-secondary;
    color: #fff;
  }


  // Success color

  &.is-success {
    background-color: $base-color-success;
    border-color: $base-color-success;
    color: #fff;
  }


  // Warning color

  &.is-warning {
    background-color: $base-color-warning;
    border-color: $base-color-warning;
    color: #fff;
  }


  // Danger color

  &.is-danger {
    background-color: $base-color-danger;
    border-color: $base-color-danger;
    color: #fff;
  }


  // Disabled color

  &[disabled],
  &.is-disabled {
    color: $base-color-disabled;
    background-color: $base-color-light;
    border-color: $base-color-border;
    cursor: not-allowed;
  }


  // Ghost color

  &.is-ghost {
    background-color: transparent;
    border-color: $base-color-brand;
    color: $base-color-brand;
  }


  // Ghost color (white)

  &.is-ghost-white {
    background-color: transparent;
    border-color: #fff;
    color: #fff;
  }


  // Ghost color (black)

  &.is-ghost-black {
    background-color: transparent;
    border-color: #000;
    color: #000;
  }


  // Ghost color (primary)

  &.is-ghost-primary {
    background-color: transparent;
    border-color: $base-color-primary;
    color: $base-color-primary;
  }


  // Ghost color (secondary)

  &.is-ghost-secondary {
    background-color: transparent;
    border-color: $base-color-secondary;
    color: $base-color-secondary;
  }


  // Ghost color (success)

  &.is-ghost-success {
    background-color: transparent;
    border-color: $base-color-success;
    color: $base-color-success;
  }


  // Ghost color (warning)

  &.is-ghost-warning {
    background-color: transparent;
    border-color: $base-color-warning;
    color: $base-color-warning;
  }


  // Ghost color (danger)

  &.is-ghost-danger {
    background-color: transparent;
    border-color: $base-color-danger;
    color: $base-color-danger;
  }


  // Ghost color (disabled)

  &.is-ghost-disabled {
    background-color: transparent;
    border-color: $base-color-disabled;
    color: $base-color-disabled;
    cursor: not-allowed;
  }


  // Icon type

  &.is-icon {
    @include button-reset-styles();
    border: 0;
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    flex-direction: column;
    justify-content: center;
    font-size: .875rem;
    background-color: transparent;
    color: $base-color-text;
    width: $button-icon-size;
    white-space: nowrap;
    text-align: center;

    &:active {
      box-shadow: none;
    }

    i {
      display: block;
      font-size: 1.5rem;
      margin-bottom: .2rem;
    }
  }


  // Icon(picture) type

  &.is-picture {
    @include button-reset-styles();
    border: 0;
    position: relative;
    width: $button-icon-size;
    height: $button-icon-size;

    img {
      -moz-force-broken-image-icon: 1;
      border-radius: 50%;
      height: 100%;
      width: 100%;
      position: absolute;
      top: 0;
      left: 0;
      background-color: $base-color-light;
    }
  }


  // Burger icon type

  &.is-burger {
    min-width: initial;
    min-width: auto;
    border: 0;
    border-radius: 0;
    letter-spacing: normal;
    line-height: 1;
    padding: .5rem;
    margin: 0 -.5rem;
    background-color: transparent;
    position: relative;

    &:active {
      box-shadow: none;
    }

    &.is-active {
      span {
        &:nth-child(1) {
          transform: translate3d(0,6px,0) rotate(45deg);
        }

        &:nth-child(3) {
          transform: translate3d(0,-6px,0) rotate(-45deg);
        }

        &:nth-child(2) {
          opacity: 0;
        }
      }
    }

    span {
      display: block;
      width: $burger-bar-width;
      height: $burger-bar-height;
      background-color: $burger-bar-color;

      &:not(:first-child) {
        margin-top: 5px;
      }
    }
  }


  // Close icon type

  &.is-close {
    min-width: initial;
    min-width: auto;
    border: 0;
    border-radius: 0;
    letter-spacing: normal;
    line-height: 1;
    padding: .5rem;
    margin: 0 -.5rem;
    background-color: transparent;
    position: relative;

    &:active {
      box-shadow: none;
    }

    span {
      display: block;
      width: $burger-bar-width;
      height: $burger-bar-height;
      background-color: $burger-bar-color;

      &:nth-child(1) {
        transform: translate3d(0,6px,0) rotate(45deg);
      }

      &:nth-child(3) {
        transform: translate3d(0,-6px,0) rotate(-45deg);
      }

      &:nth-child(2) {
        opacity: 0;
      }

      &:not(:first-child) {
        margin-top: 5px;
      }
    }
  }


  // Tag icon type

  &.is-tag {
    line-height: 1;
    min-width: initial;
    min-width: auto;
    padding: .375rem .5rem;
    border-radius: $base-border-radius-small;
  }


  // List type

  &.is-list {
    @include button-reset-styles();
    margin: 0;
    border: 0;
    border-radius: 0;
    display: block;
    background-color: transparent;
    color: $base-color-text;
    padding: 1em;
    text-align: left;

    &:active {
      box-shadow: none;
    }

    & + .button.is-list {
      border-top: 1px solid $base-color-border;
    }
  }


  // Round type

  &.is-round {
    @include button-reset-styles();
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    flex-direction: column;
    justify-content: center;
    border-radius: 50%;
    width: $button-icon-size;
    height: $button-icon-size;
  }


  // Display in full column

  &.is-col-full {
    width: 100%;
    margin: 0;

    & + .button {
      margin-top: .75rem;
    }
  }
}