/* Visor de fotos a pantalla completa (ver /js/lightbox.js). */

[data-lightbox] img {
  cursor: zoom-in;
}

html.lightbox-open,
html.lightbox-open body {
  overflow: hidden;
}

/* Los `display` de abajo pisarían el atributo `hidden` que usa el script. */
.lightbox[hidden],
.lightbox [hidden] {
  display: none !important;
}

.lightbox {
  position: fixed;
  z-index: 5000;
  inset: 0;
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 72px;
  grid-template-rows: minmax(0, 1fr) auto;
  align-items: center;
  row-gap: 14px;
  padding: 56px 12px 14px;
  background: rgba(8, 8, 10, .94);
  color: #ffffff;
  animation: lightbox-in .2s ease-out;
}

.lightbox__figure {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  height: 100%;
  min-height: 0;
  margin: 0;
}

.lightbox__image {
  display: block;
  max-width: 100%;
  max-height: calc(100% - 40px);
  min-height: 0;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .5);
  cursor: default;
  user-select: none;
}

.lightbox__caption {
  max-width: 720px;
  font-size: .92rem;
  line-height: 1.4;
  text-align: center;
  color: rgba(255, 255, 255, .78);
}

.lightbox__counter {
  position: absolute;
  top: 18px;
  left: 50%;
  margin: 0;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: rgba(255, 255, 255, .78);
  transform: translateX(-50%);
}

.lightbox__close,
.lightbox__nav {
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, .25);
  border-radius: 50%;
  background: rgba(20, 20, 24, .55);
  color: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
}

.lightbox__close:hover,
.lightbox__nav:hover {
  background: rgba(255, 255, 255, .2);
}

.lightbox__close:focus-visible,
.lightbox__nav:focus-visible,
.lightbox__thumb:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 3px;
}

.lightbox__close {
  position: absolute;
  z-index: 2;
  top: 12px;
  right: 14px;
  width: 44px;
  height: 44px;
  font-size: 1.9rem;
}

.lightbox__nav {
  grid-row: 1;
  width: 56px;
  height: 56px;
  font-size: 2.6rem;
  padding-bottom: 6px;
}

.lightbox__nav--prev {
  grid-column: 1;
  justify-self: center;
}

.lightbox__nav--next {
  grid-column: 3;
  justify-self: center;
}

.lightbox__nav:active {
  transform: scale(.94);
}

/* Barra de miniaturas */
.lightbox__thumbs {
  grid-column: 1 / -1;
  grid-row: 2;
  display: flex;
  justify-content: safe center;
  gap: 8px;
  max-width: 100%;
  padding: 4px 4px 6px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, .3) transparent;
}

.lightbox__thumb {
  flex: none;
  width: 72px;
  height: 56px;
  padding: 0;
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: 4px;
  background: #1c1c20;
  opacity: .5;
  cursor: pointer;
  transition: opacity .2s ease, border-color .2s ease;
}

.lightbox__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lightbox__thumb:hover {
  opacity: .85;
}

.lightbox__thumb.is-current {
  border-color: #ffffff;
  opacity: 1;
}

@media (max-width: 680px) {
  .lightbox {
    grid-template-columns: minmax(0, 1fr);
    padding: 60px 8px 10px;
  }

  .lightbox__figure {
    grid-column: 1;
  }

  .lightbox__nav {
    position: absolute;
    z-index: 1;
    top: calc(50% - 60px);
    width: 44px;
    height: 44px;
    font-size: 2.1rem;
  }

  .lightbox__nav--prev {
    left: 8px;
  }

  .lightbox__nav--next {
    right: 8px;
  }

  .lightbox__thumb {
    width: 56px;
    height: 44px;
  }
}

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

@media (prefers-reduced-motion: reduce) {
  .lightbox,
  .lightbox__thumb { animation: none; transition: none; }
}