.lightbox {
  max-width: 100vw;
  max-height: 100vh;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(8, 8, 8, 0.96);
  color: var(--ink);
}
.lightbox::backdrop { background: rgba(0, 0, 0, 0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.lightbox figure {
  margin: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--space-6);
  gap: var(--space-4);
}
.lightbox__img {
  max-width: 92vw;
  max-height: 80vh;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: 0 40px 120px -40px rgba(0, 0, 0, 0.9);
}
.lightbox__caption {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tr-meta);
  text-transform: uppercase;
  color: var(--ink-70);
  text-align: center;
  max-width: 56ch;
}
.lightbox__close, .lightbox__prev, .lightbox__next {
  position: absolute;
  font-family: var(--font-mark);
  color: var(--ink);
  font-size: 28px;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: rgba(12, 12, 12, 0.6);
  cursor: pointer;
  transition: background var(--dur-2), border-color var(--dur-2);
}
.lightbox__close { top: var(--space-5); right: var(--space-5); }
.lightbox__prev { top: 50%; left: var(--space-5); transform: translateY(-50%); }
.lightbox__next { top: 50%; right: var(--space-5); transform: translateY(-50%); }
.lightbox__close:hover, .lightbox__prev:hover, .lightbox__next:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
@media (max-width: 620px) {
  .lightbox__prev, .lightbox__next { width: 40px; height: 40px; font-size: 22px; }
}