:root{
  --bg:#1f2430;
  --panel:#2b2f3a;
  --muted:#9aa2b2;
  --accent:#3a7bd5;
  --accent-2:#2f5fa8;
  --card:#111217;
  --white:#ffffff;
  --radius:10px;
  --gap:12px;
}

/* LIGHT THEME OVERRIDES */
body.light {
  --bg:#f4f7fb;
  --panel:#ffffff;
  --muted:#5b6472;
  --accent:#2a62b8;
  --accent-2:#1f4f9f;
  --card:#ffffff;
  --white:#111;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background:var(--bg);
  color:var(--white);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* Header */
.site-header{
  background:var(--panel);
  padding:18px 12px;
  box-shadow:0 2px 8px rgba(0,0,0,0.2);
  position:sticky;
  top:0;
  z-index:40;
}
.header-inner{
  max-width:1100px;
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.controls{flex-wrap:wrap}
.title{
  margin:0;
  font-size:22px;
  cursor:pointer;
  letter-spacing:0.5px;
  color:var(--white);
}
.controls{
  display:flex;
  align-items:center;
  gap:8px;
}
.controls input[type="text"]{
  width:320px;
  padding:8px 10px;
  border-radius:8px;
  border:1px solid rgba(255,255,255,0.06);
  background:rgba(255,255,255,0.02);
  color:var(--white);
}
body.light .controls input[type="text"]{background:#fff;color:#111;border:1px solid rgba(0,0,0,0.06)}
.btn{
  padding:8px 12px;
  border-radius:8px;
  border:none;
  background:var(--accent);
  color:var(--white);
  cursor:pointer;
}
.btn.small{padding:6px 10px;font-size:14px}
.btn.primary{background:var(--accent-2)}
.nsfw-toggle{display:flex;gap:6px;align-items:center;color:var(--muted);font-size:14px}

/* message */
.message{max-width:1100px;margin:14px auto;padding:12px;border-radius:8px;background:rgba(0,0,0,0.25);text-align:center}
.message.hidden{display:none}

/* Gallery Grid */
main{max-width:1100px;margin:18px auto;padding:0 12px}
.gallery{
  display:grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap:var(--gap);
  align-items:start;
}
.card{background:var(--card);border-radius:10px;overflow:hidden;position:relative;height:260px;display:flex;align-items:center;justify-content:center}
.card img{width:100%;height:100%;object-fit:cover;display:block}
.card .badge{position:absolute;left:8px;top:8px;background:rgba(0,0,0,0.45);color:#fff;padding:4px 6px;border-radius:6px;font-size:12px}

/* Pagination */
.pagination{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;padding:18px 0}
.pagination button{padding:6px 10px;border-radius:6px;border:none;background:rgba(0,0,0,0.25);color:var(--white);cursor:pointer}
.pagination button.active{background:var(--accent);font-weight:600}
body.light .pagination button{background:rgba(0,0,0,0.04);color:#111}

/* Popup modal */
.popup{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;z-index:1000}
.popup.hidden{display:none}
.popup-backdrop{position:absolute;inset:0;background:rgba(0,0,0,0.55);backdrop-filter:blur(6px)}
.popup-content{position:relative;z-index:2;background:var(--panel);padding:18px;border-radius:12px;max-width:1000px;width:95%;color:var(--white)}
.popup-body{display:flex;align-items:center;gap:12px;justify-content:center;padding:0 48px}
.preview-wrap{display:flex;flex-direction:column;align-items:center;gap:10px;max-width:820px}
.preview-wrap img{max-width:820px;max-height:68vh;border-radius:8px;object-fit:contain;background:#000}
.img-meta{font-size:13px;color:var(--muted);max-width:100%;overflow:hidden;text-overflow:ellipsis;padding:0 8px}
.img-meta{ text-align:center }
.img-meta .tags{white-space:normal;overflow-wrap:anywhere;word-break:break-word;display:-webkit-box;line-clamp:3;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.rating{margin-top:6px;font-weight:600;color:var(--white)}

/* close & nav */
.close{position:absolute;right:18px;top:12px;background:transparent;border:none;color:var(--white);font-size:20px;cursor:pointer}
.nav-btn{padding:10px;border-radius:8px;border:none;background:var(--accent);color:#fff;cursor:pointer}
/* Place prev/next inside popup-content, centered vertically, stable */
#prevBtn, #nextBtn{position:absolute;top:50%;transform:translateY(-50%);z-index:1001}
#prevBtn{left:12px}
#nextBtn{right:12px}

/* Center popup actions (download button) */
.popup-actions{display:flex;justify-content:center;margin-top:10px}

/* responsive */
@media (max-width:700px){
  .controls input{width:160px}
  .preview-wrap img{max-width:100%;height:auto;max-height:60vh}
  .gallery{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
  /* larger touch targets for nav buttons */
  .nav-btn{padding:14px;font-size:18px}
  .popup-body{padding:0 36px}
}

/* Extra small devices */
@media (max-width:420px){
  .controls input{width:120px}
  .gallery{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}
  .popup-body{padding:0 28px}
}