/* Галерея: прокрутка лентой с двумя круглыми стрелками поверх ленты. */

.gallery-scroller {
  position: relative;
  --gallery-arrow-size: 44px;
  --gallery-arrow-offset: 12px;
}

.gallery-grid {
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.4) transparent;
}

.gallery-grid::-webkit-scrollbar {
  height: 6px;
}

.gallery-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.4);
  border-radius: 3px;
}

.gallery-grid img {
  scroll-snap-align: start;
}

.gallery-arrow {
  position: absolute;
  top: 50%;
  width: var(--gallery-arrow-size);
  height: var(--gallery-arrow-size);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  transform: translateY(-50%);
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
  opacity: 1;
  pointer-events: auto;
}

.gallery-arrow:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.gallery-arrow:hover {
  background: #fff;
  color: #111;
}

.gallery-arrow--prev {
  left: var(--gallery-arrow-offset);
}

.gallery-arrow--next {
  right: var(--gallery-arrow-offset);
}

.gallery-scroller.is-at-start .gallery-arrow--prev,
.gallery-scroller.is-at-end .gallery-arrow--next {
  opacity: 0;
  pointer-events: none;
}

@media (hover: none) and (pointer: coarse) {
  .gallery-arrow {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .gallery-grid,
  .gallery-arrow {
    scroll-behavior: auto;
    transition: none;
  }
}

/* Лайтбокс: стрелки навигации по краям. */

.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  font-size: 30px;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease;
}

.lightbox-arrow:hover {
  background: rgba(255, 255, 255, 0.15);
}

.lightbox-arrow:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.lightbox-arrow--prev {
  left: 30px;
}

.lightbox-arrow--next {
  right: 30px;
}

@media (prefers-reduced-motion: reduce) {
  .lightbox-arrow {
    transition: none;
  }
}