/* ── case-study-lightbox (shared) ── */

.case-study-page .cs-lightbox-trigger {
  cursor: zoom-in;
  transition: opacity 0.2s ease, box-shadow 0.2s ease;
}

.case-study-page .cs-lightbox-trigger:hover {
  opacity: 0.92;
}

.cs-lightbox {
  position: fixed;
  inset: 0;
  z-index: 50000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.cs-lightbox.is-open {
  opacity: 1;
  pointer-events: all;
}

.cs-lightbox-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
}

.cs-lightbox-img {
  position: relative;
  z-index: 1;
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 8px;
  display: block;
}

.cs-lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  z-index: 2;
  background: none;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  font-size: 26px;
  line-height: 1;
  padding: 8px;
  cursor: pointer;
  transition: color 0.2s ease;
}

.cs-lightbox-close:hover {
  color: #fff;
}

.cs-lightbox-prev,
.cs-lightbox-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s ease;
}

.cs-lightbox-prev {
  left: 24px;
}

.cs-lightbox-next {
  right: 24px;
}

.cs-lightbox-prev:hover,
.cs-lightbox-next:hover {
  background: rgba(255, 255, 255, 0.18);
}

.cs-lightbox-prev.is-hidden,
.cs-lightbox-next.is-hidden {
  display: none;
}

@media (max-width: 768px) {
  .cs-lightbox-img {
    max-width: 96vw;
    max-height: 82vh;
  }

  .cs-lightbox-prev {
    left: 12px;
  }

  .cs-lightbox-next {
    right: 12px;
  }
}