:root{
  --bg:#F3F6F7;--panel:#FFFFFF;--ink:#12262E;--muted:#5B6E77;--line:#DCE4E8;--soft:#EAF0F2;
  --won:#2E7D5B;--lost:#B5473A;--warn:#B7791F;--focus:#2F5D8A;--onink:#F3F6F7;
  --font:'Segoe UI',system-ui,-apple-system,sans-serif;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#0E1A20;--panel:#15262E;--ink:#E6EEF1;--muted:#97AAB3;--line:#26404B;--soft:#1B323C;
  --won:#4DB58A;--lost:#E0796B;--warn:#E0A64A;--focus:#6C9CCB;--onink:#0E1A20;
}}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;min-height:100%}
body{background:var(--bg);color:var(--ink);font:400 15px/1.5 var(--font);font-variant-numeric:tabular-nums}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.01em}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
[hidden]{display:none!important}
a{color:var(--focus)}
.muted{color:var(--muted)}.small{font-size:.84rem}
.btn{padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:var(--panel);cursor:pointer;font-weight:500}
.btn:hover{background:var(--soft)}
.btn.primary{background:var(--ink);color:var(--onink);border-color:var(--ink)}
.btn.primary:hover{opacity:.9;background:var(--ink)}
.btn.danger{color:var(--lost);border-color:var(--lost)}
.btn.sm{padding:4px 10px;font-size:.82rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}
label.f{display:block;font-size:.82rem;font-weight:600;color:var(--muted);margin-bottom:4px}
.field{margin-bottom:14px}
input[type=text],input[type=password],input[type=email],input[type=number],input[type=search],input[type=date],select,textarea{width:100%;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:var(--panel)}
.err{background:color-mix(in srgb,var(--lost) 14%,var(--panel));border:1px solid var(--lost);border-radius:8px;padding:9px 12px;margin-bottom:14px;font-size:.9rem}
.ok{background:color-mix(in srgb,var(--won) 14%,var(--panel));border:1px solid var(--won);border-radius:8px;padding:9px 12px;margin-bottom:14px;font-size:.9rem}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:18px}

/* sign-in */
.authwrap{min-height:100vh;display:grid;place-items:center;padding:16px}
.authcard{width:min(420px,100%);background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:26px}
.authcard h1{font-size:1.35rem;margin-bottom:4px}
.authcard .btn.primary{width:100%;padding:11px}
.qr{display:block;margin:10px auto;border-radius:8px;background:#fff;padding:6px;width:220px;height:220px}
.secret{font-family:Consolas,monospace;word-break:break-all;background:var(--soft);padding:6px 9px;border-radius:6px;font-size:.84rem}
.codes{display:grid;grid-template-columns:1fr 1fr;gap:4px 14px;font-family:Consolas,monospace;background:var(--soft);padding:12px;border-radius:8px;margin:10px 0}

/* admin */
.adminhead{position:fixed;top:0;left:0;right:0;z-index:10;background:var(--bg);border-bottom:2px solid color-mix(in srgb,var(--ink) 40%,var(--line))}
.adminhead .in{max-width:1280px;margin:0 auto;padding:10px 24px;display:flex;gap:10px 18px;align-items:center;flex-wrap:wrap}
.adminhead .brand{font-weight:700;font-size:1.1rem}
.adminhead nav{display:flex;gap:4px;flex-wrap:wrap}
.adminhead nav a{padding:7px 12px;border-radius:8px;text-decoration:none;color:var(--muted);font-weight:600}
.adminhead nav a:hover{background:var(--soft);color:var(--ink)}
.adminhead nav a[aria-current=page]{background:var(--ink);color:var(--onink)}
.adminhead .right{margin-left:auto;display:flex;gap:10px;align-items:center}
.adminmain{max-width:1280px;margin:0 auto;padding:calc(var(--headh,110px) + 22px) 24px 64px}
.adminmain h2{font-size:1.45rem;margin-bottom:4px}
.lede{color:var(--muted);margin:0 0 16px;max-width:75ch}
.tw{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-size:.8rem;font-weight:600;white-space:nowrap}
tr:last-child td{border-bottom:0}
.tag{display:inline-block;padding:1px 9px;border-radius:999px;background:var(--soft);font-size:.78rem;color:var(--muted);white-space:nowrap}
.tag.good{background:color-mix(in srgb,var(--won) 18%,transparent);color:var(--won);font-weight:600}
.tag.bad{background:color-mix(in srgb,var(--lost) 16%,transparent);color:var(--lost);font-weight:600}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spread{justify-content:space-between}
.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}
.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 16px}
.filters{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end;margin-bottom:14px}
.filters>div{min-width:150px}
.perms{display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:6px}
.perms label{display:flex;gap:7px;align-items:center;font-size:.88rem}
details.chg summary{cursor:pointer;color:var(--focus);font-size:.82rem}
.chgtable td,.chgtable th{padding:3px 8px;font-size:.8rem;word-break:break-word}
.chgtable td.old{color:var(--lost)}.chgtable td.new{color:var(--won)}
dialog{border:1px solid var(--line);border-radius:14px;background:var(--panel);color:var(--ink);padding:22px;width:min(560px,calc(100vw - 24px))}
dialog::backdrop{background:rgba(10,20,26,.5)}
dialog h3{font-size:1.2rem;margin-bottom:12px}
.dfoot{display:flex;gap:10px;justify-content:flex-end;margin-top:14px;flex-wrap:wrap}
#toast{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:var(--ink);color:var(--onink);padding:10px 16px;border-radius:10px;font-size:.9rem;opacity:0;pointer-events:none;transition:opacity .15s;z-index:50;max-width:90vw}
#toast.on{opacity:1}
@media (max-width:700px){.grid2,.grid3{grid-template-columns:1fr}.adminmain,.adminhead .in{padding-left:16px;padding-right:16px}}