.fs-viewer {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: none;
  background: rgba(0, 0, 0, 0.92);
  touch-action: none; /* we handle gestures */
  -webkit-tap-highlight-color: transparent;
}
.fs-viewer.is-open { display: block; }

.fs-viewer__backdrop {
  position: absolute;
  inset: 0;
}

.fs-viewer__img {
  position: absolute;
  left: 50%;
  top: 50%;
  max-width: 100vw;
  max-height: 100vh;
  transform: translate(-50%, -50%) scale(1);
  transform-origin: center center;
  user-select: none;
  -webkit-user-drag: none;
  cursor: grab;
}
.fs-viewer.is-dragging .fs-viewer__img { cursor: grabbing; }

.fs-viewer__ui {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.fs-viewer__btn {
  pointer-events: auto;
  position: absolute;
  top: 14px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  font-size: 18px;
  line-height: 44px;
  text-align: center;
  cursor: pointer;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.fs-viewer__btn:hover { background: rgba(255, 255, 255, 0.18); }
.fs-viewer__btn:active { transform: scale(0.98); }

.fs-viewer__close { right: 14px; font-size: 22px; }

.fs-viewer__prev {
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
}
.fs-viewer__next {
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
}

.fs-viewer__counter {
  pointer-events: none;
  position: absolute;
  left: 14px;
  top: 14px;
  padding: 10px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.9);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

@media (max-width: 768px) {
  .fs-viewer__prev,
  .fs-viewer__next {
    top: auto;
    bottom: 14px;
    transform: none;
  }
  .fs-viewer__prev { left: 14px; }
  .fs-viewer__next { right: 14px; }
}

/* make box-item feel clickable */
.gallery-items .box-item {
    cursor: pointer;
    width: 100%;
    aspect-ratio: 4 / 3;   /* change to 1/1, 16/9, etc. if you prefer */
    overflow: hidden;
}

.gallery-items .box-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;     /* fills box, crops if needed, no distortion */
  object-position: center;
  display: block;
}

/* Desktop: press effect = 5px down (not scale / not huge movement) */
@media (min-width: 769px) {
  .fs-viewer__btn:active {
    transform: translateY(5px);
  }

  /* keep arrows centered while pressed */
  .fs-viewer__prev:active,
  .fs-viewer__next:active {
    transform: translateY(calc(-50% + 5px));
  }
}