.rgg-wrap{--gap:14px;--radius:12px;--border:#e9eef5;--shadow:0 8px 24px rgba(16,24,40,.08);--cardbg:#fff;--text:#111827;--muted:#6b7280;--iconbg:#f3f4f6;--iconfg:#111827;--btn:#2563eb;--btn2:#16a34a;font-family:inherit}
.rgg-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gap)}
.rgg-wrap[data-cols="1"] .rgg-grid{grid-template-columns:repeat(1,minmax(0,1fr))}
.rgg-wrap[data-cols="2"] .rgg-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.rgg-wrap[data-cols="3"] .rgg-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.rgg-wrap[data-cols="5"] .rgg-grid{grid-template-columns:repeat(5,minmax(0,1fr))}
.rgg-wrap[data-cols="6"] .rgg-grid{grid-template-columns:repeat(6,minmax(0,1fr))}

@media (max-width: 1024px){
  .rgg-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width: 768px){
  .rgg-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
}
@media (max-width: 480px){
  .rgg-grid{grid-template-columns:repeat(1,minmax(0,1fr));gap:10px}
}

.rgg-card{background:var(--cardbg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:0 2px 10px rgba(16,24,40,.05);overflow:hidden}
.rgg-thumb{display:block;width:100%;padding:0;border:0;background:transparent;cursor:pointer;text-align:left}

/* uniform vertical thumbnails */
.rgg-thumb__box{display:block;width:100%;aspect-ratio:3/4;background:#fff}
.rgg-thumb__box img{width:100%;height:100%;object-fit:contain;display:block}

.rgg-title{padding:10px 12px 0 12px;font-size:14px;color:var(--text);line-height:1.25;min-height:18px}

.rgg-actions{display:flex;gap:10px;justify-content:flex-start;align-items:center;padding:10px 12px 12px 12px}
.rgg-iconbtn{width:40px;height:36px;border-radius:10px;border:1px solid var(--border);background:var(--iconbg);color:var(--iconfg);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .08s ease, background .12s ease}
.rgg-iconbtn:hover{transform:translateY(-1px)}
.rgg-iconbtn svg{display:block}
.rgg-iconbtn.rgg-download{background:rgba(37,99,235,.10);color:#2563eb}
.rgg-iconbtn.rgg-print{background:rgba(22,163,74,.10);color:#16a34a}

/* Lightbox */
.rgg-lock{overflow:hidden}

.rgg-lightbox{position:fixed;inset:0;z-index:999999}
.rgg-lightbox__backdrop{position:absolute;inset:0;background:rgba(15,23,42,.55)}
.rgg-lightbox__panel{position:relative;max-width:min(920px,92vw);max-height:92vh;margin:4vh auto;background:#fff;border-radius:18px;box-shadow:var(--shadow);padding:18px 18px 14px 18px;display:flex;flex-direction:column;gap:12px}

.rgg-close{position:absolute;top:10px;right:12px;width:36px;height:36px;border-radius:999px;border:1px solid var(--border);background:#fff;color:#111827;font-size:22px;line-height:32px;cursor:pointer}

.rgg-nav{position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:#fff;color:#111827;font-size:28px;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:.95}
.rgg-prev{left:10px}
.rgg-next{right:10px}

.rgg-lightbox__imgwrap{display:flex;align-items:center;justify-content:center;min-height:300px}
.rgg-lightbox__img{max-width:100%;max-height:68vh;object-fit:contain;display:block}

.rgg-lightbox__buttons{display:flex;gap:12px;justify-content:center;align-items:center}
.rgg-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:12px;padding:12px 16px;border:1px solid var(--border);text-decoration:none;font-weight:600;font-size:15px;cursor:pointer}
.rgg-btn-download{background:var(--btn);color:#fff;border-color:transparent}
.rgg-btn-print{background:var(--btn2);color:#fff;border-color:transparent}

@media (max-width: 520px){
  .rgg-lightbox__panel{padding:14px 14px 12px 14px;border-radius:16px}
  .rgg-lightbox__buttons{flex-direction:column}
  .rgg-btn{width:100%}
  .rgg-nav{width:40px;height:40px;border-radius:12px;font-size:26px}
}