/* =========================================================
   Component — Lightbox (visualizador de imagens em tela cheia)
   Baseado em <dialog>; abre a partir do botão de tela cheia do showcase.
   ========================================================= */

.lightbox {
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--color-white);
  overflow: hidden;
}

.lightbox::backdrop {
  background: rgba(6, 21, 32, 0.92);
  backdrop-filter: blur(2px);
}

/* --- Fade in/out ao abrir e fechar --- */
.lightbox[open] {
  animation: lightbox-in var(--dur-base) var(--ease-out);
}
.lightbox[open]::backdrop {
  animation: lightbox-in var(--dur-base) var(--ease-out);
}
.lightbox.is-closing,
.lightbox.is-closing::backdrop {
  animation: lightbox-out var(--dur-base) var(--ease-std) forwards;
}

@keyframes lightbox-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes lightbox-out {
  from { opacity: 1; }
  to   { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .lightbox[open],
  .lightbox[open]::backdrop,
  .lightbox.is-closing,
  .lightbox.is-closing::backdrop {
    animation: none;
  }
}

.lightbox__inner {
  position: relative;
  width: 100%;
  height: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-3);
  padding: clamp(1rem, 4vw, 3rem);
}

.lightbox__figure {
  grid-column: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  min-height: 0;
}

.lightbox__img {
  max-width: 100%;
  max-height: 80vh;
  width: auto;
  height: auto;
  object-fit: contain;
  box-shadow: var(--shadow-lg);
}

.lightbox__caption {
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-wide);
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
}

.lightbox__nav {
  width: 3rem;
  height: 3rem;
  display: grid;
  place-items: center;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-pill);
  transition: background var(--dur-base) var(--ease-std);
}
.lightbox__nav:hover { background: rgba(255, 255, 255, 0.2); }
.lightbox__nav--prev { grid-column: 1; }
.lightbox__nav--next { grid-column: 3; }

.lightbox__close {
  position: absolute;
  inset-block-start: clamp(1rem, 3vw, 2rem);
  inset-inline-end: clamp(1rem, 3vw, 2rem);
  width: 2.75rem;
  height: 2.75rem;
  display: grid;
  place-items: center;
  color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-pill);
  transition: background var(--dur-base) var(--ease-std);
  z-index: 1;
}
.lightbox__close:hover { background: rgba(255, 255, 255, 0.2); }

.lightbox__counter {
  position: absolute;
  inset-block-end: clamp(1rem, 3vw, 2rem);
  inset-inline: 0;
  text-align: center;
  font-size: var(--fs-sm);
  letter-spacing: var(--ls-wide);
  color: rgba(255, 255, 255, 0.85);
}

@media (max-width: 640px) {
  .lightbox__inner { gap: var(--space-2); padding: var(--space-4); }
  .lightbox__nav { width: 2.5rem; height: 2.5rem; }
  .lightbox__img { max-height: 70vh; }
}