/* ==========================================================================
   WyciekiPro — Gallery Section
   Photo gallery with lightbox capability
   ========================================================================== */

.gallery {
  background: var(--color-bg-alt);
  padding-bottom: calc(var(--space-section) * 0.85);
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.gallery__item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 1;
  background: linear-gradient(110deg, hsl(210, 15%, 90%) 8%, hsl(210, 15%, 95%) 18%, hsl(210, 15%, 90%) 33%);
  background-size: 200% 100%;
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  to { background-position: -200% 0; }
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow), filter var(--transition-slow), opacity 0.4s ease;
  filter: contrast(1.15) saturate(1.1) brightness(1.02);
  opacity: 0;
}

.gallery__item img.loaded {
  opacity: 1;
}

.gallery__item:hover img {
  transform: scale(1.08);
}

.gallery__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, hsla(210, 75%, 15%, 0.6) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery__item:hover::after {
  opacity: 1;
}

.gallery__item-label {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  right: var(--space-md);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  z-index: 2;
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--transition-base);
}

.gallery__item:hover .gallery__item-label {
  opacity: 1;
  transform: translateY(0);
}

/* Span 2 columns for featured items */
.gallery__item--wide {
  grid-column: span 2;
  aspect-ratio: 2/1;
}

/* ── Lightbox ──────────────────────────────────────────────────────────── */

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  background: hsla(0, 0%, 0%, 0.9);
  z-index: var(--z-modal);
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(12px);
}

.lightbox.open {
  display: flex;
}

.lightbox__img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: hsla(0, 0%, 100%, 0.1);
  border-radius: var(--radius-full);
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.lightbox__close:hover {
  background: hsla(0, 0%, 100%, 0.2);
}

.lightbox__caption {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: var(--text-base);
  text-align: center;
  max-width: 600px;
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: hsla(0, 0%, 100%, 0.05);
  color: #fff;
  border: none;
  font-size: 2rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  z-index: 10;
  border-radius: var(--radius-sm);
}

.lightbox__nav:hover {
  background: hsla(0, 0%, 100%, 0.15);
  scale: 1.05;
}

.lightbox__nav--prev {
  left: var(--space-md);
}

.lightbox__nav--next {
  right: var(--space-md);
}

@media (max-width: 768px) {
  .lightbox__nav {
    width: 40px;
    height: 60px;
    font-size: 1.5rem;
    background: hsla(0, 0%, 100%, 0.1); /* Slightly more visible on mobile */
  }
}

@media (max-width: 768px) {
  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .gallery__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }
}