#photosCarousel {
  --gap: 12px;
  --radius: 16px;
  --arrow-size: 48px;
  --arrow-bg: rgba(0, 0, 0, 0.42);
  --arrow-bg-hover: rgba(0, 0, 0, 0.58);
  --arrow-border: rgba(255, 255, 255, 0.35);
  --dot-size: 9px;
}

/* ===== layout ===== */

#photosCarousel .carousel {
  width: 100%;
}

#photosCarousel .carousel__frame {
  position: relative;
}

#photosCarousel .carousel__viewport {
  overflow: hidden;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
}

#photosCarousel .carousel__track {
  display: flex;
  gap: var(--gap);
  padding: 0;
  margin: 0;
  will-change: transform;
  transition: transform 0.35s ease;
}

#photosCarousel .slide {
  flex: 0 0 calc((100% - (2 * var(--gap))) / 3);
}

#photosCarousel .slide__media {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: 12px;
}

#photosCarousel .slide__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ===== buttons ===== */

#photosCarousel .btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;

  width: var(--arrow-size);
  height: var(--arrow-size);
  border: 1px solid var(--arrow-border);
  border-radius: 999px;
  background: var(--arrow-bg);
  color: #fff;
  cursor: pointer;

  font-size: 28px;
  line-height: 1;
  display: grid;
  place-items: center;
}

#photosCarousel .btn:hover,
#photosCarousel .btn:focus-visible {
  background: var(--arrow-bg-hover);
  outline: none;
}

#photosCarousel .btn--prev {
  left: 10px;
}

#photosCarousel .btn--next {
  right: 10px;
}

/* ===== dots ===== */

#photosCarousel .dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 12px;
}

#photosCarousel .dot {
  width: var(--dot-size);
  height: var(--dot-size);
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.25);
  cursor: pointer;
  padding: 0;
}

#photosCarousel .dot[aria-current="true"] {
  background: rgba(255, 255, 255, 0.9);
}

/* ===== lightbox ===== */

#photosCarousel .lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px;
  padding: 18px;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(6px);
}

#photosCarousel .lightbox.is-open {
  display: grid;
}

#photosCarousel .lb__content {
  margin: 0;
  justify-self: center;
  width: min(1100px, 100%);
  max-height: calc(100vh - 36px);
  display: grid;
  gap: 10px;
}

#photosCarousel .lb__img {
  display: block;
  width: 100%;
  max-height: calc(100vh - 120px);
  height: auto;
  object-fit: contain;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.06);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
}

#photosCarousel .lb__caption {
  text-align: center;
  font-size: 14px;
  color: #fff;
  opacity: 0.92;
}

#photosCarousel .lb__close,
#photosCarousel .lb__nav {
  width: 48px;
  height: 48px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  cursor: pointer;
  font-size: 28px;
  line-height: 1;
  display: grid;
  place-items: center;
}

#photosCarousel .lb__close {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 10000;
}

#photosCarousel .lb__close:hover,
#photosCarousel .lb__nav:hover,
#photosCarousel .lb__close:focus-visible,
#photosCarousel .lb__nav:focus-visible {
  background: rgba(255, 255, 255, 0.22);
  outline: none;
}

/* ===== responsive ===== */

@media (max-width: 820px) {
  #photosCarousel .slide {
    flex: 0 0 calc((100% - var(--gap)) / 2);
  }
}

@media (max-width: 520px) {
  #photosCarousel .slide {
    flex: 0 0 100%;
  }
}

@media (max-width: 720px) {
  #photosCarousel .lightbox {
    grid-template-columns: 1fr;
  }

  #photosCarousel .lb__nav {
    display: none;
  }
}