/* Alibaba-like Gallery – Precise UI (RTL) */
:root{
  --ali-accent:#00bfd6;
  --ali-dark:#111827;
  --ali-muted:#6b7280;
  --ali-border:#e5e7eb;
  --ali-bg:#fff;
  --ali-radius:16px;
}

/* Desktop mosaic (exact dims inspired by sample) */
.aliacf-gallery{ width:1167px; max-width:100%; margin:0 auto; }
.aliacf-mosaic{
  position:relative; display:grid;
  grid-template-columns: 759px 187px 187px;
  grid-template-rows: 215px 215px;
  gap:17px; height:447px;
}
.aliacf-tile{ position:relative; display:block; overflow:hidden; border-radius:var(--ali-radius); border:1px solid var(--ali-border); background:#f8fafc; }
.aliacf-tile:hover .aliacf-img{ transform:scale(1.02); }
.aliacf-img{ width:100%; height:100%; object-fit:cover; transition:transform .3s ease; display:block; }
.aliacf-tile--hero{ grid-column:1 / span 1; grid-row:1 / span 2; }
.aliacf-tile:nth-child(2){ grid-column:2; grid-row:1; }
.aliacf-tile:nth-child(3){ grid-column:3; grid-row:1; }
.aliacf-tile:nth-child(4){ grid-column:2; grid-row:2; }
.aliacf-tile:nth-child(5){ grid-column:3; grid-row:2; }
.aliacf-hero-overlay{
  position:absolute; right:12px; bottom:12px;
  background:rgba(17,24,39,.82); color:#fff; padding:8px 12px;
  border-radius:10px; font-weight:800; font-size:13px;
}
.aliacf-more{
  position:absolute; right:10px; bottom:10px; z-index:2;
  background:rgba(17,24,39,.75); color:#fff; padding:6px 10px;
  border-radius:10px; font-weight:700; font-size:12px;
}

/* Lightbox shell - Improved for Alibaba style */
.aliacf-lightbox{ display:none; position:fixed; inset:0; background:rgba(0,0,0,.88); z-index:99999; direction:rtl; }
.aliacf-lightbox.show{ display:block; }
.aliacf-topbar{
  position:absolute; top:12px; left:0; right:0; display:flex; align-items:center; justify-content:center; gap:8px;
}
.aliacf-tabs{ display:flex; gap:8px; background:rgba(255,255,255,.92); padding:6px; border-radius:12px; border:1px solid var(--ali-border); }
.aliacf-tab{ background:#fff; border:1px solid transparent; border-radius:10px; padding:6px 10px; font-weight:700; cursor:pointer; transition:all 0.2s ease; }
.aliacf-tab:hover{ background:#f8fafc; }
.aliacf-tab.active{ border-color:var(--ali-accent); color:var(--ali-accent); background:#f0fdfa; }
.aliacf-tab.disabled{ opacity:.5; pointer-events:none; }
.aliacf-close{ position:absolute; top:12px; right:12px; width:36px; height:36px; border-radius:999px; border:1px solid rgba(255,255,255,.35); color:#fff; background:transparent; font-size:22px; cursor:pointer; transition:all 0.2s ease; }
.aliacf-close:hover{ background:rgba(255,255,255,.1); border-color:rgba(255,255,255,.5); }

.aliacf-panel{ display:none; }
.aliacf-panel.active{ display:block; }
.aliacf-stage{ position:absolute; inset:68px 0 132px; display:flex; align-items:center; justify-content:center; }
.aliacf-stage-img{
  max-width:min(92vw, 1440px);
  max-height:calc(100vh - 220px);
  border-radius:12px; box-shadow:0 20px 60px rgba(0,0,0,.3);
}
.aliacf-prev, .aliacf-next{
  position:absolute; top:50%; transform:translateY(-50%);
  background:rgba(255,255,255,.18); border:1px solid rgba(255,255,255,.35);
  color:#fff; width:44px; height:44px; border-radius:999px; cursor:pointer; font-size:28px; line-height:1;
  transition:all 0.2s ease;
}
.aliacf-prev:hover, .aliacf-next:hover{ background:rgba(255,255,255,.25); border-color:rgba(255,255,255,.5); }
.aliacf-prev{ right:20px; } .aliacf-next{ left:20px; }
.aliacf-prev:focus, .aliacf-next:focus, .aliacf-close:focus{ outline:2px solid rgba(255,255,255,.6); outline-offset:2px; }

.aliacf-counter{ position:absolute; top:16px; right:20px; color:#fff; font-weight:800; text-shadow:0 1px 2px rgba(0,0,0,.45); }

/* User Info Panel */
.aliacf-user-info{
  position:absolute; top:80px; right:20px; background:rgba(255,255,255,0.95); 
  padding:16px; border-radius:12px; max-width:320px; font-size:14px; color:#374151;
  border:1px solid rgba(255,255,255,0.2); backdrop-filter:blur(10px);
  box-shadow:0 8px 32px rgba(0,0,0,0.1);
}
.aliacf-user-info .user-author{ font-weight:600; margin-bottom:8px; color:#111827; }
.aliacf-user-info .user-date{ color:#6b7280; margin-bottom:12px; font-size:13px; }
.aliacf-user-info .user-text{ line-height:1.5; color:#4b5563; }

.aliacf-thumbs{
  position:absolute; bottom:16px; right:0; left:0; display:flex; gap:8px;
  overflow-x:auto; padding:0 20px; scroll-snap-type:x mandatory; -webkit-overflow-scrolling:touch;
}
.aliacf-thumb{ width:120px; height:80px; object-fit:cover; border-radius:8px; border:2px solid transparent; cursor:pointer; opacity:.9; scroll-snap-align:center; transition:all 0.2s ease; }
.aliacf-thumb:hover{ opacity:1; transform:scale(1.05); }
.aliacf-thumb.active{ border-color:var(--ali-accent); opacity:1; }

.aliacf-no-images{
  text-align:center; padding:40px; color:#6b7280; font-size:16px;
  position:absolute; top:50%; left:50%; transform:translate(-50%, -50%);
}

/* Responsiveness */
@media (max-width:1280px){
  .aliacf-gallery{ width:100%; padding:0 12px; }
  .aliacf-mosaic{ grid-template-columns: 1fr 1fr; grid-auto-rows:160px; gap:10px; height:auto; }
  .aliacf-tile--hero{ grid-column:1 / span 2; grid-row:1; height:240px; }
  .aliacf-tile:nth-child(2){ grid-column:1; grid-row:2; }
  .aliacf-tile:nth-child(3){ grid-column:2; grid-row:2; }
  .aliacf-tile:nth-child(4){ grid-column:1; grid-row:3; }
  .aliacf-tile:nth-child(5){ grid-column:2; grid-row:3; }
}

/* Tablet */
@media (max-width:1024px){
  .aliacf-gallery{ padding:0 8px; }
  .aliacf-mosaic{ gap:8px; }
  .aliacf-tile--hero{ height:200px; }
  .aliacf-tabs{ padding:4px; gap:6px; }
  .aliacf-tab{ padding:4px 8px; font-size:13px; }
  .aliacf-user-info{ top:70px; right:15px; max-width:280px; padding:12px; }
}

/* Mobile – exact slider mode */
@media (max-width:768px){
  .aliacf-gallery{ padding:0; overflow:hidden; }
  .aliacf-mosaic{
    display:flex; flex-wrap:nowrap; overflow:hidden;
    height:auto; gap:0; transform:translate3d(0,0,0); transition:transform .35s ease;
  }
  .aliacf-tile, .aliacf-tile--hero{
    flex:0 0 100%; max-width:100%; border-radius:0; aspect-ratio:16 / 10;
  }
  .aliacf-hero-overlay, .aliacf-more{ display:none; }
  .aliacf-prev, .aliacf-next{ width:44px; height:44px; }
  .aliacf-stage{ inset: 60px 0 118px; }
  .aliacf-stage-img{ max-width:min(100vw - 24px, 1440px); max-height:calc(100dvh - 182px); }
  .aliacf-topbar{ top:8px; left:8px; right:8px; }
  .aliacf-tabs{ padding:4px; gap:6px; }
  .aliacf-user-info{ top:60px; right:8px; left:8px; max-width:none; }
  .aliacf-close{ top:8px; right:8px; width:32px; height:32px; font-size:18px; }
}

@media (max-width:480px){
  .aliacf-thumb{ width:84px; height:56px; }
  .aliacf-tabs{ flex-direction:column; gap:4px; }
  .aliacf-tab{ text-align:center; padding:6px 8px; }
  .aliacf-topbar{ top:4px; left:4px; right:4px; }
  .aliacf-stage{ inset: 50px 0 100px; }
  .aliacf-counter{ top:12px; right:12px; font-size:14px; }
  .aliacf-thumbs{ bottom:12px; padding:0 12px; }
  .aliacf-user-info{ top:50px; right:4px; left:4px; padding:10px; font-size:13px; }
}

/* Small mobile */
@media (max-width:360px){
  .aliacf-tabs{ padding:2px; }
  .aliacf-tab{ padding:4px 6px; font-size:12px; }
  .aliacf-thumb{ width:70px; height:47px; }
  .aliacf-stage{ inset: 45px 0 90px; }
}

/* Safe areas for notches */
@supports (top: env(safe-area-inset-top)){
  .aliacf-stage{
    top: calc(env(safe-area-inset-top,0px) + 68px);
    bottom: calc(env(safe-area-inset-bottom,0px) + 132px);
  }
  @media (max-width:768px){
    .aliacf-stage{
      top: calc(env(safe-area-inset-top,0px) + 60px);
      bottom: calc(env(safe-area-inset-bottom,0px) + 118px);
    }
  }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce){
  *{ transition:none !important; animation:none !important; scroll-behavior:auto !important; }
}

/* Touch improvements for mobile */
@media (hover: none) and (pointer: coarse) {
  .aliacf-tab:hover{ background:#fff; }
  .aliacf-close:hover{ background:transparent; }
  .aliacf-prev:hover, .aliacf-next:hover{ background:rgba(255,255,255,.18); }
  .aliacf-thumb:hover{ transform:none; }
}