/* =========================
   Lightbox Overlay
========================= */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.75);
  opacity: 0;
  transition: opacity 0.3s ease;
  cursor: pointer;
}

.lightbox.is-open {
  display: flex;
}

.lightbox__img {
  max-width: calc(100vw - 120px);
  max-height: calc(100vh - 80px);
  width: auto;
  height: auto;
  object-fit: contain;
  border: none;
  border-radius: 12px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
  transform: scale(0.92);
  transition: transform 0.3s ease;
}

.lightbox__img--svg {
  height: calc(100vh - 80px);
}

.lightbox.is-open .lightbox__img {
  transform: scale(1);
}

.lightbox__close {
  position: absolute;
  top: 24px;
  right: 32px;
  width: 48px;
  height: 48px;
  border: none;
  background: none;
  color: #fff;
  font-size: 36px;
  line-height: 1;
  cursor: pointer;
  transition: opacity 0.2s;
}

.lightbox__close:hover {
  opacity: 0.7;
}

/* 좌우 화살표 */
.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: none;
  background: none;
  color: #fff;
  font-size: 48px;
  line-height: 1;
  cursor: pointer;
  transition: opacity 0.2s;
}

.lightbox__prev { left: 32px; }
.lightbox__next { right: 32px; }

.lightbox__prev:hover,
.lightbox__next:hover {
  opacity: 0.7;
}

/* PDF iframe */
.lightbox__pdf {
  display: none;
  width: min(700px, calc(100vw - 120px));
  aspect-ratio: 7 / 10;
  max-height: calc(100vh - 80px);
  border: none;
  border-radius: 12px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3);
  transform: scale(0.92);
  transition: transform 0.3s ease;
  background: #fff;
}

.lightbox.is-open .lightbox__pdf {
  transform: scale(1);
}

.lightbox--pdf .lightbox__img { display: none; }
.lightbox--pdf .lightbox__pdf { display: block; }
.lightbox--pdf .lightbox__prev,
.lightbox--pdf .lightbox__next { display: none; }

/* 클릭 가능한 썸네일 커서 */
.lightbox-trigger {
  cursor: pointer;
}