// Notes on the classes:
//
// 1. The .carousel-item-left and .carousel-item-right is used to indicate where
//    the active slide is heading.
// 2. .active.carousel-item is the current slide.
// 3. .active.carousel-item-left and .active.carousel-item-right is the current
//    slide in its in-transition state. Only one of these occurs at a time.
// 4. .carousel-item-next.carousel-item-left and .carousel-item-prev.carousel-item-right
//    is the upcoming slide in transition.

.carousel
  position: relative

.carousel-inner
  position: relative
  width: 100%
  overflow: hidden

.carousel-item
  position: relative
  display: none
  align-items: center
  width: 100%
  backface-visibility: hidden
  perspective: 1000px

.carousel-item.active,
.carousel-item-next,
.carousel-item-prev
  display: block

  +transition($carousel-transition)

.carousel-item-next,
.carousel-item-prev
  position: absolute
  top: 0

.carousel-item-next.carousel-item-left,
.carousel-item-prev.carousel-item-right
  transform: translateX(0)

  @supports (transform-style: preserve-3d)
    transform: translate3d(0, 0, 0)

.carousel-item-next,
.active.carousel-item-right
  transform: translateX(100%)

  @supports (transform-style: preserve-3d)
    transform: translate3d(100%, 0, 0)

.carousel-item-prev,
.active.carousel-item-left
  transform: translateX(-100%)

  @supports (transform-style: preserve-3d)
    transform: translate3d(-100%, 0, 0)

//
// Alternate transitions
//

.carousel-fade
  .carousel-item
    opacity: 0
    transition-duration: .6s
    transition-property: opacity

  .carousel-item.active,
  .carousel-item-next.carousel-item-left,
  .carousel-item-prev.carousel-item-right
    opacity: 1

  .active.carousel-item-left,
  .active.carousel-item-right
    opacity: 0

  .carousel-item-next,
  .carousel-item-prev,
  .carousel-item.active,
  .active.carousel-item-left,
  .active.carousel-item-prev
    transform: translateX(0)

    @supports (transform-style: preserve-3d)
      transform: translate3d(0, 0, 0)

//
// Left/right controls for nav
//

.carousel-control-prev,
.carousel-control-next
  position: absolute
  top: 0
  bottom: 0

  // Use flex for alignment (1-3)
  display: flex

  // 1. allow flex styles
  align-items: center

  // 2. vertically center contents
  justify-content: center

  // 3. horizontally center contents
  width: $carousel-control-width
  color: $carousel-control-color
  text-align: center
  opacity: $carousel-control-opacity

  // We can't have a transition here because WebKit cancels the carousel
  // animation if you trip this while in the middle of another animation.

  // Hover/focus state
  +hover-focus
    color: $carousel-control-color
    text-decoration: none
    outline: 0
    opacity: .9

.carousel-control-prev
  left: 0

  @if $enable-gradients
    background: linear-gradient(90deg, rgba($black, 0.25), rgba($black, 0.001))

.carousel-control-next
  right: 0

  @if $enable-gradients
    background: linear-gradient(270deg, rgba($black, 0.25), rgba($black, 0.001))

// Icons for within
.carousel-control-prev-icon,
.carousel-control-next-icon
  display: inline-block
  width: $carousel-control-icon-width
  height: $carousel-control-icon-width
  background: transparent no-repeat center center
  background-size: 100% 100%

.carousel-control-prev-icon
  background-image: $carousel-control-prev-icon-bg

.carousel-control-next-icon
  background-image: $carousel-control-next-icon-bg

// Optional indicator pips
//
// Add an ordered list with the following class and add a list item for each
// slide your carousel holds.

.carousel-indicators
  position: absolute
  right: 0
  bottom: 10px
  left: 0
  z-index: 15
  display: flex
  justify-content: center
  padding-left: 0

  // override <ol> default
  // Use the .carousel-control's width as margin so we don't overlay those
  margin-right: $carousel-control-width
  margin-left: $carousel-control-width
  list-style: none

  li
    position: relative
    flex: 0 1 auto
    width: $carousel-indicator-width
    height: $carousel-indicator-height
    margin-right: $carousel-indicator-spacer
    margin-left: $carousel-indicator-spacer
    text-indent: -999px
    cursor: pointer
    background-color: rgba($carousel-indicator-active-bg, 0.5)

    // Use pseudo classes to increase the hit area by 10px on top and bottom.
    &::before
      position: absolute
      top: -10px
      left: 0
      display: inline-block
      width: 100%
      height: 10px
      content: ""

    &::after
      position: absolute
      bottom: -10px
      left: 0
      display: inline-block
      width: 100%
      height: 10px
      content: ""

  .active
    background-color: $carousel-indicator-active-bg

// Optional captions
//
//

.carousel-caption
  position: absolute
  right: (100% - $carousel-caption-width) / 2
  bottom: 20px
  left: (100% - $carousel-caption-width) / 2
  z-index: 10
  padding-top: 20px
  padding-bottom: 20px
  color: $carousel-caption-color
  text-align: center