.art-lightbox-open {
    overflow: hidden;
    height: 100%;
}

/* Lightbox overlay */
.art-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0,0,0,.9);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease;
}
.art-lightbox.is-open {
    opacity: 1;
    visibility: visible;
}

/* Content wrapper */
.art-lightbox__img-wrap {
    padding: 15px;
    /* height: 100vh; */
    max-width: 100vw;
    line-height: 0;
}
.art-lightbox__img-wrap img {
    display: block;
    margin: 0 auto;
    height: 100%;
    width: 100%;
    object-fit: contain;
    transform: scale(.96);
    transition: transform .25s ease;
}
.art-lightbox.is-open .art-lightbox__img-wrap img {
    transform: scale(1);
}

/* Controls */
.art-lightbox__close,
.art-lightbox__arrow {
    position: absolute;
    background: transparent;
    border: 0;
    color: #fff;
    font-size: 2rem;
    cursor: pointer;
    padding: .5rem 1rem;
    line-height: 1;
}
.art-lightbox__close {
    top: 1rem;
    right: 1rem;
    z-index: 1;    
}
.art-lightbox.art-lightbox .swiper-button-next, 
.art-lightbox.art-lightbox .swiper-button-prev {
    top: var(--swiper-navigation-top-offset,50%);
}
.art-lightbox__arrow--prev {
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
}
.art-lightbox__arrow--next {
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
}
.art-lightbox__counter {
    position: absolute;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font-size: 1rem;
}
/* ------------------------------------------------------------------
   Lightbox navigation fade transition
   ------------------------------------------------------------------ */
.art-lightbox__img-wrap {
    position: relative; /* required to layer clones during transition */
    overflow: hidden;
}

/* Base for temp anim images */
.art-lightbox__img--animating {
    position: absolute !important;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    pointer-events: none;
    will-change: opacity, transform;
    transition: opacity .25s ease, transform .25s ease;
}

/* Incoming starts faded + slightly scaled down */
.art-lightbox__img--fade-in {
    opacity: 0;
    transform: scale(.96);
}
.art-lightbox__img--fade-in.art-lightbox__img--active {
    opacity: 1;
    transform: scale(1);
}

/* Outgoing starts visible; fades & scales down */
.art-lightbox__img--fade-out {
    opacity: 1;
    transform: scale(1);
}
.art-lightbox__img--fade-out.art-lightbox__img--active {
    opacity: 0;
    transform: scale(.96);
}

.art-lightbox__img--animating {
    will-change: transform, opacity;
}

.art-lightbox__thumbs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    padding: 12px;
    gap: 8px;
    max-width: 90%;
    margin: 0 auto;
}

.art-lightbox__thumb {
    width: 160px;
    height: auto;
    object-fit: cover;
    opacity: 0.6;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.art-lightbox__thumb:hover,
.art-lightbox__thumb.is-active {
    opacity: 1;
    border-color: #000;
}




/* Wrapper for main image and thumbnails stacked vertically */
.art-lightbox__content {
  display: flex;
  flex-direction: column;  /* Stack vertically */
  align-items: center;     /* Center horizontally */
  max-width: 90vw;
  width: 100%;
  gap: 12px; /* space between main image and thumbnails */
}

/* Main image container takes full width but limited height */
.art-lightbox__img-wrap {
  max-width: 100%;
  max-height: 90vh; /* limit height to viewport */
  width: 100%;
  line-height: 0;
}

/* Keep thumbnails container centered and wrapped */
.art-lightbox__thumbs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  padding: 0; /* can adjust */
  gap: 8px;
  max-width: 100%;
  margin: 0 auto;
}

.art-lightbox.is-preloading {
  opacity: 0;
  pointer-events: none;
}

.art-lightbox.is-open {
  transition: opacity 0.3s ease;
  opacity: 1;
}