:root{--ai-lb-bg:rgba(0,0,0,.78);--ai-lb-fg:#fff;--ai-lb-cap:#e5e7eb;--ai-focus: #60a5fa}
.ai-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:16px}
.ai-item{list-style:none}
.ai-thumb{appearance:none;border:0;background:transparent;padding:0;margin:0;cursor:pointer;width:100%;text-align:left}
.ai-thumb:focus{outline:3px solid var(--ai-focus);outline-offset:2px;border-radius:8px}
.ai-thumb-img{width:100%;height:auto;border-radius:12px;display:block}
.ai-thumb-cap{display:block;margin-top:8px;font-size:.9rem;opacity:.85}
/* Lightbox */
.ai-lightbox{position:fixed;inset:0;display:none;z-index:9999}
.ai-lightbox.open{display:block}
.ai-lb-backdrop{position:absolute;inset:0;background:var(--ai-lb-bg)}
.ai-lb-content{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:24px}
.ai-lb-content figure{max-width:min(92vw,1280px);max-height:86vh;margin:0;position:relative}
.ai-lb-img{max-width:100%;max-height:86vh;width:auto;height:auto;border-radius:12px;box-shadow:0 10px 45px rgba(0,0,0,.4)}
.ai-lb-cap{color:var(--ai-lb-cap);text-align:center;margin-top:12px}
.ai-lb-close,.ai-lb-prev,.ai-lb-next{position:absolute;top:16px;appearance:none;border:0;background:rgba(0,0,0,.45);color:#fff;padding:10px 14px;border-radius:999px;font-size:22px;cursor:pointer}
.ai-lb-close{right:16px}
.ai-lb-prev,.ai-lb-next{top:50%;transform:translateY(-50%);font-size:28px;background:rgba(0,0,0,.5)}
.ai-lb-prev{left:14px}
.ai-lb-next{right:14px}
.ai-lb-close:focus,.ai-lb-prev:focus,.ai-lb-next:focus{outline:3px solid var(--ai-focus);outline-offset:2px}
@media (hover:hover){.ai-lb-prev:hover,.ai-lb-next:hover,.ai-lb-close:hover{background:rgba(0,0,0,.65)}}