// Name:            Timeline
//
// Component:       `timeline`
//
// Modifiers:       'timeline-simple'
//                  'timeline-single'
//                  'timeline-avatar'
//                  'timeline-nav'
//                  'timeline-nav-single'
//
// ========================================================================

// Variables
// ========================================================================

$timeline-line-width:                  2px !default;
$timeline-line-color:                  $border-color-base !default;

$timeline-dot-color:                   $color-white !default;
$timeline-dot-bg:                      $brand-primary !default;
$timeline-dot-border:                  $color-white !default;

$timeline-dot-size:                    14px !default;
$timeline-icon-size:                   40px !default;

$timeline-item-reverse-top:            90px !default;
$timeline-item-margin-bottom:          60px !default;
$timeline-item-padding-horizontal:     40px !default;

$timeline-info-bg:                     $gray-lighter !default;
$timeline-info-border:                 $timeline-info-bg !default;
$timeline-info-padding-horizontal:     20px !default;
$timeline-info-line-height:            28px !default;
$timeline-info-border-size:            1px !default;

$timeline-period-bg:                   $page-bg !default;

$timeline-nav-color:                   $color-white !default;
$timeline-nav-bg:                      $brand-primary !default;
$timeline-nav-hover-bg:                $brand-primary-hover !default;

$timeline-feed-dot-size:               30px !default;
$timeline-feed-item-margin-bottom:     $line-height-computed !default;
$timeline-feed-item-padding-horizontal:30px !default;

// z-index
$timeline-period-z-index:              ($zindex-base + 5) !default;
$timeline-dot-z-index:                 ($zindex-base + 10) !default;


// Mixins
// ========================================================================

@mixin timeline-dot-size($size){
  .timeline-dot {
    width: $size;
    height: $size;
    margin-right: (-$size/2);
    line-height: $size;
  }

  .timeline-reverse {
    .timeline-dot {
      margin-left: (-$size/2);
    }
  }

  &.timeline-single {
    margin-left: ($size/2);

    .timeline-dot {
      margin-left: (-$size/2);
    }
  }

  @include media-breakpoint-down(sm) {
    margin-left: ($size/2);

    .timeline-dot {
      margin-left: (-$size/2);
    }
  }
}

// Component: Timeline
// ========================================================================

.timeline {
  position: relative;
  padding: 0;
  margin-bottom: $line-height-computed;
  list-style: none;
  background: transparent;

  &:before {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: $timeline-line-width;
    margin-left: (-$timeline-line-width / 2);
    content: "";
    background-color: $timeline-line-color;
  }

  @include clearfix();

  &:not(.timeline-single) {
    .timeline-item:first-child + .timeline-item,
    .timeline-period + .timeline-item + .timeline-item {
      margin-top: $timeline-item-reverse-top;
    }
  }
}

.timeline-item {
  position: relative;
  display: block;
  float: left;
  width: 50%;
  padding-right: $timeline-item-padding-horizontal;
  margin-bottom: $timeline-item-margin-bottom;
  
  &:not(.timeline-period) {
    @include clearfix();
  }

  &.timeline-reverse {
    float: right;
    padding-right: 0;
    padding-left: $timeline-item-padding-horizontal;
    clear: right;
  }

  &:last-child {
    margin-bottom: 0;
  }
}

.timeline-period {
  position: relative;
  z-index: $timeline-period-z-index;
  display: block;
  padding: 25px 10px;
  margin: 20px auto 30px;
  clear: both;
  font-size: 26px;
  text-align: center;
  text-transform: uppercase;
  background: $timeline-period-bg;
}

.timeline-content {
  width: 100%;
  overflow: hidden;
}


.timeline-dot {
  position: absolute;
  right: 0;
  z-index: $timeline-dot-z-index;
  color: $timeline-dot-color;
  text-align: center;
  cursor: pointer;
  background-color: $timeline-dot-bg;
  border-radius: 50%;

  top: (($timeline-info-line-height + $timeline-info-border-size - $timeline-dot-size)/2);

  .timeline-reverse & {
    right: auto;
    left: 0;
    margin-right: 0;
  }
}

.timeline {
  @include timeline-dot-size($timeline-dot-size);
}

.timeline-info {
  float: right;
  padding: 0 $timeline-info-padding-horizontal;
  margin-bottom: $line-height-computed;
  line-height: $timeline-info-line-height;
  text-align: center;
  background: $timeline-info-bg;
  border: $timeline-info-border-size solid $timeline-info-border;
  border-radius: 20px;

  .timeline-reverse & {
    float: left;
  }
}

.timeline-footer {
  position: absolute;
  right: 0;
  bottom: -30px;
  margin-right: 55px;

  .icon {
    margin-right: .3em;
  }

  .timeline-reverse & {
    right: auto;
    left: 0;
    margin-right: 0;
    margin-left: 55px;
  }
}

.timeline-reverse + .timeline-reverse {
  margin-top: 0;
}

@include media-breakpoint-down(sm) {
  // Modifier: `timeline`
  // -------------------------
  .timeline {
    &:before {
      left: 0;
    }
  }

  .timeline-item {
    &,
    &.timeline-reverse {
      float: none;
      width: 100%;
      padding-right: 0;
      padding-left: $timeline-item-padding-horizontal;
      margin-top: 0;
      margin-bottom: $timeline-item-margin-bottom;
    }
  }

  .timeline-dot {
    right: auto;
    left: 0;
    margin-right: 0;
    margin-left: (-$timeline-dot-size/2);
  }

  .timeline-info {
    display: inline-block;
    float: none;
  }

  .timeline-footer {
    right: auto;
    bottom: -26px;
    left: 0;
    margin-right: 0;
    margin-left: 40px;
  }
}


// Modifier: `timeline-single`
// ========================================================================

.timeline-single {
  &:before {
    left: 0;
  }

  .timeline-item {
    float: none;
    width: 100%;
    padding-right: 0;
    padding-left: $timeline-item-padding-horizontal;
    margin-bottom: $timeline-item-margin-bottom;
  }

  .timeline-dot {
    right: auto;
    left: 0;
    margin-right: 0;
    margin-left: (-$timeline-dot-size/2);
  }

  .timeline-info {
    float: left;
  }

  .timeline-footer {
    right: auto;
    bottom: -26px;
    left: 0;
    margin-right: 0;
    margin-left: 40px;
  }
}

// Modifier: `timeline-icon`
// ========================================================================

.timeline-icon {
  @include timeline-dot-size($timeline-icon-size);

  .timeline-dot {
    top: (($timeline-info-line-height + $timeline-info-border-size - $timeline-icon-size)/2);
  }
}

// Modifier: `timeline-avatar`
// ========================================================================

.timeline-avatar {
  @include timeline-dot-size($avatar-size);
}

.timeline-avatar-sm {
  @include timeline-dot-size($avatar-size-sm);
}


.timeline-avatar-lg {
  @include timeline-dot-size($avatar-size-lg);
}

// Modifier: `timeline-simple`
// ========================================================================

.timeline-simple {
  .timeline-dot {
    top: 0;
    margin-top: 10px;
  }
}

// Modifier: `timeline-feed`
// ========================================================================
.timeline-feed {
  @include timeline-dot-size($timeline-feed-dot-size);

  &.timeline-simple {
    .timeline-dot {
      margin-top: 5px;
    }
  }

  .timeline-item {
    padding-right: $timeline-feed-item-padding-horizontal;
    margin-bottom: $timeline-feed-item-margin-bottom;

    &.timeline-reverse {
      padding-left: $timeline-feed-item-padding-horizontal;
    }
  }

  &.timeline-single {
    .timeline-item {
      padding-left: $timeline-feed-item-padding-horizontal;
    }
  }

  @include media-breakpoint-down(sm) {
    .timeline-item {
      padding-right: $timeline-feed-item-padding-horizontal;
      margin-bottom: $timeline-feed-item-margin-bottom;
    }
  }
}