/* ==========================================================================
   Album page: masonry wall + lightbox dialog
   ========================================================================== */
.album__back {
  margin-bottom: var(--space-6);
}

.masonry {
  columns: 1;
  column-gap: var(--grid-gutter);
}

.masonry__item {
  position: relative;
  display: block;
  break-inside: avoid;
  margin-bottom: var(--grid-gutter);
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.masonry__img {
  width: 100%;
  height: auto;
  transition: transform 900ms var(--ease-out-expo), opacity var(--transition-default);
}

.masonry__item:hover .masonry__img {
  transform: scale(1.03);
}

.masonry__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 0.6));
  opacity: 0;
  transition: opacity var(--transition-default);
  pointer-events: none;
}

.masonry__item:hover::after,
.masonry__item:focus-visible::after {
  opacity: 1;
}

.masonry__caption {
  position: absolute;
  left: var(--space-4);
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 1;
  font-size: var(--font-size-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition-default), transform var(--transition-default);
}

.masonry__item:hover .masonry__caption,
.masonry__item:focus-visible .masonry__caption {
  opacity: 1;
  transform: none;
}

@media (min-width: 640px) {
  .masonry { columns: 2; }
}

@media (min-width: 1024px) {
  .masonry { columns: 3; }
}

@media (min-width: 1440px) {
  .masonry { columns: 4; }
}

/* Lightbox -------------------------------------------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: rgba(5, 5, 5, 0.96);
  color: var(--color-white);
}

.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.9);
}

.lightbox__figure {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 64px var(--space-4) 72px;
  pointer-events: none;
}

.lightbox__img {
  max-width: 100%;
  max-height: calc(100vh - 136px);
  width: auto;
  height: auto;
  object-fit: contain;
  pointer-events: auto;
  transition: opacity var(--transition-default);
}

.lightbox__img.is-loading {
  opacity: 0.35;
}

.lightbox__caption {
  position: absolute;
  left: var(--space-5);
  right: var(--space-5);
  bottom: var(--space-5);
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--font-size-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.lightbox__counter {
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.lightbox__close,
.lightbox__arrow {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  transition: background-color var(--transition-default);
}

.lightbox__close:hover,
.lightbox__arrow:hover {
  background: var(--color-red);
}

.lightbox__close {
  top: var(--space-4);
  right: var(--space-4);
}

.lightbox__arrow {
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__arrow--prev { left: var(--space-3); }
.lightbox__arrow--next { right: var(--space-3); }

.lightbox--single .lightbox__arrow {
  display: none;
}

@media (min-width: 1024px) {
  .lightbox__figure {
    padding: 72px 96px;
  }
  .lightbox__arrow--prev { left: var(--space-5); }
  .lightbox__arrow--next { right: var(--space-5); }
}