:root{
  --bg:#EEF1F6; --surface:#FFFFFF; --surface2:#E4E9F1; --ink:#101A2B; --muted:#5A6577; --line:#C9D1DE;
  --accent:#1747D6; --accent-ink:#FFFFFF;
  --f-display:'Bricolage Grotesque','Segoe UI',system-ui,sans-serif;
  --f-body:'IBM Plex Sans','Segoe UI',system-ui,sans-serif;
  --f-mono:'IBM Plex Mono',ui-monospace,Consolas,monospace;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0E1523; --surface:#17203A; --surface2:#222D4A; --ink:#E8EEFB; --muted:#9AA7C2; --line:#33406A;
  --accent:#7FA0FF; --accent-ink:#0E1523; color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.45;padding:16px 16px 48px}
.wrap{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
h1{font-family:var(--f-display);font-weight:700;font-size:30px;letter-spacing:-.01em;margin:0;text-wrap:balance}
h2{font-family:var(--f-display);margin:0;font-size:20px}
.sub{color:var(--muted);margin:4px 0 0}
button,.btn{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:9px 14px;cursor:pointer;text-decoration:none;display:inline-block}
button:hover,.btn:hover{border-color:var(--accent)}
button.primary,.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600}
button.big{font-size:20px;padding:18px 20px;width:100%;border-radius:12px}
button:disabled{opacity:.5;cursor:default}
button:focus-visible,input:focus-visible,a:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
input[type=text],input[type=password]{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:10px 12px;width:100%}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px;display:flex;flex-direction:column;gap:12px}
.muted{color:var(--muted)}
.mono{font-family:var(--f-mono);font-size:13px}
[hidden]{display:none!important}
.status{font-weight:600;min-height:1.4em}

/* guest upload */
.sel{font:inherit;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:10px 12px;width:100%}
.q{display:flex;flex-direction:column;gap:8px;margin:0;padding:0;list-style:none}
.q li{display:grid;grid-template-columns:56px 1fr auto;gap:10px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:8px}
.q .th{width:56px;height:56px;border-radius:6px;background:var(--surface2);object-fit:cover;display:flex;align-items:center;justify-content:center;font-family:var(--f-mono);font-size:11px;color:var(--muted);overflow:hidden}
.q .th img{width:100%;height:100%;object-fit:cover}
.q .nm{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.bar{height:8px;border-radius:4px;background:var(--surface2);overflow:hidden;margin-top:6px}
.bar>i{display:block;height:100%;width:0;background:var(--accent)}
.q .st{font-family:var(--f-mono);font-size:12px;text-align:right;min-width:78px}
.q li.fail{border-style:dashed}

/* gallery */
.top{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;justify-content:space-between}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px}
.tile{position:relative;aspect-ratio:1;border-radius:8px;overflow:hidden;background:var(--surface2);border:1px solid var(--line);padding:0;cursor:pointer}
.tile img{width:100%;height:100%;object-fit:cover;display:block}
.tile .ph{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--f-mono);font-size:12px;color:var(--muted)}
.tile .tag{position:absolute;left:6px;bottom:6px;background:var(--ink);color:var(--bg);font-family:var(--f-mono);font-size:11px;padding:1px 6px;border-radius:4px}
.lb{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:20;display:flex;flex-direction:column}
.lb .stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:8px}
.lb img,.lb video{max-width:100%;max-height:100%;object-fit:contain}
.lb .cap{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;justify-content:space-between;padding:10px 14px;color:#fff;background:#0b0f1a}
.lb button,.lb .btn{background:#17203A;color:#fff;border-color:#33406A}
.qrcard{align-items:center;text-align:center}
#qr{background:#fff;padding:12px;border-radius:8px;line-height:0}
.toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:9px 16px;border-radius:6px;z-index:30;max-width:90vw}
@media print{
  body{background:#fff;color:#000;padding:0}
  .wrap>*:not(.qrcard){display:none!important}
  .qrcard{border:0;margin:40px auto}
  .qrcard .actions,.qrcard .noprint{display:none!important}
  .qrcard h2{font-size:34px}
}