/* ==========================================================================
   19-gallery-lightbox.css — full-screen modal viewer for gallery images
   ========================================================================== */

/* Make every gallery item read as clickable */
.gallery__item--clickable {
  cursor: zoom-in;
  outline: none;
}

.gallery__item--clickable:focus-visible .gallery__photo-frame {
  outline: 3px solid var(--color-rust);
  outline-offset: 4px;
}

.gallery__item--clickable .gallery__photo-frame {
  transition: transform var(--transition-base);
}

.gallery__item--clickable:hover .gallery__photo-frame img,
.gallery__item--clickable:focus-visible .gallery__photo-frame img {
  /* Existing hover scale already in 17-gallery.css — do not stack */
}

/* --------------------------------------------------------------------------
   Modal container
   -------------------------------------------------------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;

  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-32) var(--space-48);

  background: rgba(26, 22, 18, 0.94); /* near-black, slight ink warmth */
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);

  animation: lightbox-fade-in 220ms ease-out;
}

.lightbox[hidden] { display: none; }

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

/* Lock body scroll while open */
body.lightbox-open {
  overflow: hidden;
}

/* --------------------------------------------------------------------------
   Figure (image + caption)
   -------------------------------------------------------------------------- */
.lightbox__figure {
  margin: 0;
  max-width: min(1400px, calc(100vw - 200px));
  max-height: calc(100vh - var(--space-80));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-16);
}

.lightbox__img {
  display: block;
  max-width: 100%;
  max-height: calc(100vh - var(--space-120));
  object-fit: contain;
  border-radius: var(--radius-card);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  animation: lightbox-img-in 280ms cubic-bezier(0.2, 0.7, 0.3, 1);
}

@keyframes lightbox-img-in {
  from { opacity: 0; transform: scale(0.96); }
  to   { opacity: 1; transform: scale(1); }
}

.lightbox__caption {
  font-family: var(--font-caption);
  font-style: italic;
  font-size: 15px;
  line-height: 1.5;
  color: var(--color-paper);
  text-align: center;
  max-width: 600px;
  opacity: 0.85;
}

/* --------------------------------------------------------------------------
   Close button (top right)
   -------------------------------------------------------------------------- */
.lightbox__close {
  position: absolute;
  top: var(--space-24);
  right: var(--space-24);

  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid rgba(242, 236, 223, 0.3);
  background: rgba(0, 0, 0, 0.4);
  color: var(--color-paper);

  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

.lightbox__close:hover {
  background: var(--color-rust);
  border-color: var(--color-rust);
  transform: scale(1.05);
}

.lightbox__close:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Prev / next arrows (vertical-centred edges)
   -------------------------------------------------------------------------- */
.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);

  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(242, 236, 223, 0.3);
  background: rgba(0, 0, 0, 0.4);
  color: var(--color-paper);

  font-size: 34px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.lightbox__nav--prev { left: var(--space-24); }
.lightbox__nav--next { right: var(--space-24); }

.lightbox__nav:hover {
  background: var(--color-rust);
  border-color: var(--color-rust);
  transform: translateY(-50%) scale(1.05);
}

.lightbox__nav:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 3px;
}

/* --------------------------------------------------------------------------
   Image counter (bottom centre)
   -------------------------------------------------------------------------- */
.lightbox__counter {
  position: absolute;
  bottom: var(--space-24);
  left: 50%;
  transform: translateX(-50%);

  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-paper);
  opacity: 0.6;
}

/* --------------------------------------------------------------------------
   Mobile — tighter layout, arrows at bottom not edges
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  .lightbox {
    padding: var(--space-16);
  }

  .lightbox__figure {
    max-width: 100%;
    max-height: calc(100vh - var(--space-120));
  }

  .lightbox__img {
    max-height: calc(100vh - var(--space-160));
  }

  .lightbox__close {
    top: var(--space-12);
    right: var(--space-12);
  }

  .lightbox__nav {
    top: auto;
    bottom: var(--space-16);
    transform: none;
    width: 48px;
    height: 48px;
    font-size: 28px;
  }

  .lightbox__nav--prev { left: var(--space-16); }
  .lightbox__nav--next { right: var(--space-16); }

  .lightbox__nav:hover { transform: scale(1.05); }

  .lightbox__counter {
    bottom: auto;
    top: var(--space-12);
    left: var(--space-12);
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   Reduced motion — kill animations
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .lightbox,
  .lightbox__img {
    animation: none;
  }
}