/* RuGallery Light — Dark Glass, Fast Grid, Masonry, Shimmer */

/* Grid */
.rugallery { --rg-gap: 14px; --rg-radius: 14px; display: grid; gap: var(--rg-gap); }
.rugallery.rg-cols-1 { grid-template-columns: 1fr; }
.rugallery.rg-cols-2 { grid-template-columns: repeat(2, 1fr); }
.rugallery.rg-cols-3 { grid-template-columns: repeat(3, 1fr); }
.rugallery.rg-cols-4 { grid-template-columns: repeat(4, 1fr); }
.rugallery.rg-cols-5 { grid-template-columns: repeat(5, 1fr); }
.rugallery.rg-cols-6 { grid-template-columns: repeat(6, 1fr); }

@media (max-width: 992px) { .rugallery.rg-cols-4, .rugallery.rg-cols-5, .rugallery.rg-cols-6 { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 768px) { .rugallery.rg-cols-3, .rugallery.rg-cols-4, .rugallery.rg-cols-5, .rugallery.rg-cols-6 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .rugallery { grid-template-columns: 1fr; } }

.rg-item { position: relative; }
.rg-thumb-wrap { position: relative; overflow: hidden; border-radius: var(--rg-radius); aspect-ratio: 4 / 3; background: #0c1220; box-shadow: 0 10px 26px rgba(0,0,0,.22); cursor: zoom-in; }
.rg-thumb-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .6s ease, filter .6s ease; filter: saturate(1.02) contrast(1.02) brightness(.92); }
.rg-thumb-wrap:hover img { transform: scale(1.05); filter: brightness(.98); }

/* Dark glass overlay + zoom icon */
.rg-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,12,22,0) 40%, rgba(10,12,22,.55) 100%); opacity: 0; transition: opacity .35s ease; display: grid; place-items: end; padding: 10px; }
.rg-thumb-wrap:hover .rg-overlay { opacity: 1; }
.rg-zoom { color: #fff; font-weight: 600; background: rgba(255,255,255,.12); padding: 6px 10px; border-radius: 10px; backdrop-filter: blur(6px); transition: all .4s ease; }
.rg-thumb-wrap:hover .rg-zoom { background: rgba(255,255,255,0.2); transform: scale(1.1); }

/* Captions */
.rg-caption { position: absolute; left: 10px; right: 10px; bottom: 10px; margin: 0; padding: 6px 10px; font-size: .85rem; color: #eef3ff; background: rgba(20,24,40,.55); border-radius: 10px; text-shadow: 0 2px 6px rgba(0,0,0,.35); transition: all .45s ease; }

/* Shimmer effect */
.rg-thumb-wrap::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 20%, rgba(255,255,255,0.08) 40%, rgba(255,255,255,0.02) 60%); transform: translateX(-100%); transition: transform 0.9s ease; pointer-events: none; }
.rg-thumb-wrap:hover::before { transform: translateX(100%); }

/* Masonry layout (CSS columns) */
.rg-layout-masonry { column-count: var(--rg-cols, 3); column-gap: 1rem; }
.rg-layout-masonry .rg-item { display: inline-block; margin-bottom: 1rem; width: 100%; }
.rg-layout-masonry .rg-thumb-wrap { aspect-ratio: auto; }
@media (max-width: 992px) { .rg-layout-masonry { column-count: 2; } }
@media (max-width: 600px) { .rg-layout-masonry { column-count: 1; } }

/* Bootstrap Modal styles */
.rg-modal-content { background: rgba(8,10,18,.88); border-radius: 16px; overflow: hidden; border: none; }
.rg-modal-content .rg-close { position: absolute; top: 10px; right: 10px; z-index: 10; }
.rg-modal-body { position: relative; padding: 0; background: transparent; }
.rg-modal-img { width: 100%; height: 75vh; object-fit: contain; display: block; background: #05060b; }
.rg-modal-caption { color: #eaf0ff; padding: 10px 16px; text-align: center; font-size: .95rem; background: rgba(10,14,22,.55); }
.rg-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255,255,255,.12); color: #fff; border: none; width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; cursor: pointer; }
.rg-prev { left: 12px; } .rg-next { right: 12px; }

/* Custom lightbox */
.rg-lightbox { position: fixed; inset: 0; background: rgba(4,6,12,.9); display: none; align-items: center; justify-content: center; z-index: 9999; }
.rg-lightbox.show { display: flex; }
.rg-lb-inner { position: relative; max-width: 95vw; max-height: 90vh; }
.rg-lb-img { width: 100%; height: 80vh; object-fit: contain; background: #05060b; }
.rg-lb-caption { color: #eaf0ff; text-align: center; margin-top: 8px; font-size: .95rem; }
.rg-lb-close, .rg-lb-prev, .rg-lb-next { position: absolute; top: 10px; width: 44px; height: 44px; border-radius: 50%; border: none; background: rgba(255,255,255,.12); color: #fff; cursor: pointer; }
.rg-lb-close { right: 10px; }
.rg-lb-prev { left: -54px; top: 50%; transform: translateY(-50%); }
.rg-lb-next { right: -54px; top: 50%; transform: translateY(-50%); }
@media (max-width: 768px) { .rg-lb-prev { left: 6px; } .rg-lb-next { right: 6px; } }