tabler/core/scss/bootstrap/_carousel.scss

// Notes on the classes:
//
// 1. .carousel-inner scrolls natively (CSS scroll-snap); the browser drives the slide
//    transition, momentum and touch gestures instead of a JS transform/float engine.
// 2. .active.carousel-item is the current slide, kept in sync by an IntersectionObserver
//    in carousel.ts — it no longer controls layout, only indicator/API state.

@use '../config' as *;

.carousel {
  position: relative;
}

.carousel-inner {
  position: relative;
  display: flex;
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;

  &::-webkit-scrollbar {
    display: none;
  }

  @media (prefers-reduced-motion: no-preference) {
    scroll-behavior: smooth;
  }
}

.carousel-item {
  position: relative;
  flex: 0 0 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  backface-visibility: hidden;
}

//
// Alternate transitions
//

.carousel-fade {
  .carousel-inner {
    display: grid;
    overflow: hidden;
    scroll-snap-type: none;
  }

  .carousel-item {
    grid-area: 1 / 1;
    z-index: 0;
    visibility: hidden;
    opacity: 0;
    @include transition(opacity $carousel-transition-duration ease-in-out, visibility 0s $carousel-transition-duration);
  }

  .carousel-item.active {
    z-index: 1;
    visibility: visible;
    opacity: 1;
    transition-delay: 0s;
  }
}

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

.carousel-control-prev,
.carousel-control-next {
  position: absolute;
  top: 0;
  bottom: 0;
  z-index: 1;
  // 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;
  padding: 0;
  color: $carousel-control-color;
  text-align: center;
  background: none;
  filter: var(--carousel-control-icon-filter);
  border: 0;
  opacity: $carousel-control-opacity;
  @include transition($carousel-control-transition);

  // Hover/focus state
  &:hover,
  &:focus {
    color: $carousel-control-color;
    text-decoration: none;
    outline: 0;
    opacity: $carousel-control-hover-opacity;
  }
}
.carousel-control-prev {
  inset-inline-start: 0;
  background-image: if(sass($enable-gradients): linear-gradient(90deg, color-transparent(var(--black), 0.25), color-transparent(var(--black), 0.001)); else: null);
}
.carousel-control-next {
  inset-inline-end: 0;
  background-image: if(sass($enable-gradients): linear-gradient(270deg, color-transparent(var(--black), 0.25), color-transparent(var(--black), 0.001)); else: null);
}

// Icons for within
.carousel-control-prev-icon,
.carousel-control-next-icon {
  display: inline-block;
  width: $carousel-control-icon-width;
  height: $carousel-control-icon-width;
  background-color: currentColor;
  @include mask-icon($size: 100% 100%, $position: 50%);
}

.carousel-control-prev-icon {
  mask-image: escape-svg($carousel-control-prev-icon-bg) #{'/*rtl:' + escape-svg($carousel-control-next-icon-bg) + '*/'};
}
.carousel-control-next-icon {
  mask-image: escape-svg($carousel-control-next-icon-bg) #{'/*rtl:' + escape-svg($carousel-control-prev-icon-bg) + '*/'};
}

// Optional indicator pips/controls
//
// Add a container (such as a list) with the following class and add an item (ideally a focusable control,
// like a button) with data-bs-target for each slide your carousel holds.

.carousel-indicators {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  z-index: 2;
  display: flex;
  justify-content: center;
  padding: 0;
  // Use the .carousel-control's width as margin so we don't overlay those
  margin-inline-end: $carousel-control-width;
  margin-bottom: 1rem;
  margin-inline-start: $carousel-control-width;

  [data-bs-target],
  [data-target] {
    box-sizing: content-box;
    flex: 0 1 auto;
    width: $carousel-indicator-width;
    height: $carousel-indicator-height;
    padding: 0;
    margin-inline-end: $carousel-indicator-spacer;
    margin-inline-start: $carousel-indicator-spacer;
    text-indent: -999px;
    cursor: pointer;
    background-color: var(--carousel-indicator-active-bg);
    background-clip: padding-box;
    border: 0;
    // Use transparent borders to increase the hit area by 10px on top and bottom.
    border-top: $carousel-indicator-hit-area-height solid transparent;
    border-bottom: $carousel-indicator-hit-area-height solid transparent;
    opacity: $carousel-indicator-opacity;
    @include transition($carousel-indicator-transition);
  }

  .active {
    opacity: $carousel-indicator-active-opacity;
  }
}

// Optional captions
//
//

.carousel-caption {
  position: absolute;
  inset-inline: (100% - $carousel-caption-width) * 0.5;
  bottom: $carousel-caption-spacer;
  padding-top: $carousel-caption-padding-y;
  padding-bottom: $carousel-caption-padding-y;
  color: var(--carousel-caption-color);
  text-align: center;
}

// Dark mode carousel

@mixin carousel-dark() {
  --carousel-indicator-active-bg: #{$carousel-indicator-active-bg-dark};
  --carousel-caption-color: #{$carousel-caption-color-dark};
  --carousel-control-icon-filter: #{$carousel-control-icon-filter-dark};
}

.carousel-dark {
  @include carousel-dark();
}

:root,
[data-bs-theme='light'],
[data-theme='light'] {
  --carousel-indicator-active-bg: #{$carousel-indicator-active-bg};
  --carousel-caption-color: #{$carousel-caption-color};
  --carousel-control-icon-filter: #{$carousel-control-icon-filter};
}

@if $enable-dark-mode {
  @include color-mode(dark, true) {
    @include carousel-dark();
  }
}