:root{
  --bg:#0d1117; --panel:#161b22; --line:#26303b; --text:#e6edf3;
  --muted:#8b98a5; --accent:#2f81f7; --ok:#2ea043; --bad:#da3633;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text);
  font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Ubuntu,sans-serif;
  min-height:100vh; display:flex; flex-direction:column;
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:100%;max-width:980px;margin:0 auto;padding:0 20px}
.top{background:#010409;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:56px;gap:16px}
.brand{color:var(--text);font-weight:600;letter-spacing:.2px;display:flex;align-items:center;gap:8px}
.brand:hover{text-decoration:none}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(46,160,67,.18)}
.muted{color:var(--muted)}
.small{font-size:13px}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
nav{display:flex;align-items:center;gap:18px;font-size:14px}
nav a{color:var(--muted)}
nav a:hover{color:var(--text);text-decoration:none}
.inline{display:inline;margin:0}
button.link{background:none;border:0;color:var(--muted);font:inherit;cursor:pointer;padding:0}
button.link:hover{color:var(--text)}
main{flex:1;padding:28px 20px 40px}
h1{font-size:22px;margin:0 0 6px}
h2{font-size:15px;margin:22px 0 10px;color:var(--muted);text-transform:uppercase;letter-spacing:.6px}
.foot{padding:18px 20px 26px;font-size:12px;border-top:1px solid var(--line)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:22px;margin:0 0 18px}
.card.narrow{max-width:420px;margin:40px auto}
.card.narrow-wide{max-width:620px;margin:20px auto}
.head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:18px}
.stat{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.stat .n{display:block;font-size:24px;font-weight:600;line-height:1.2}
.stat .l{display:block;font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
form label{display:block;margin:0 0 14px;font-size:13px;color:var(--muted)}
input{
  display:block;width:100%;margin-top:6px;padding:10px 12px;border-radius:8px;
  border:1px solid var(--line);background:#0b0f14;color:var(--text);font:inherit;font-size:14px;
}
input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(47,129,247,.18)}
form.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
form.row input{margin-top:0;flex:1;min-width:200px}
button.primary,.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
button{
  padding:10px 16px;border-radius:8px;border:1px solid var(--line);
  background:#21262d;color:var(--text);font:inherit;font-weight:500;cursor:pointer;
}
button:hover{filter:brightness(1.12)}
.btn{
  display:inline-block;padding:8px 12px;border-radius:8px;border:1px solid var(--line);
  background:#21262d;color:var(--text);font-size:13px;
}
.btn:hover{text-decoration:none;filter:brightness(1.12)}
.btn.danger{border-color:rgba(218,54,51,.5);color:#ff8b86}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line);vertical-align:middle}
thead th{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);font-weight:600}
tbody tr:last-child td{border-bottom:0}
td.right{text-align:right}
table.kv th{width:190px;color:var(--muted);font-weight:500}
.pill{
  display:inline-block;padding:2px 9px;border-radius:999px;font-size:11px;
  border:1px solid var(--line);background:#0b0f14;color:var(--muted);letter-spacing:.4px
}
.pill.on{border-color:rgba(46,160,67,.5);color:#66d47e;background:rgba(46,160,67,.1)}
.pill.off{border-color:rgba(218,54,51,.5);color:#ff8b86;background:rgba(218,54,51,.1)}
.flashes{margin-bottom:16px}
.flash{
  background:rgba(47,129,247,.1);border:1px solid rgba(47,129,247,.4);color:#9ecbff;
  padding:10px 14px;border-radius:8px;margin-bottom:10px;font-size:14px
}
.flash.error{background:rgba(218,54,51,.1);border-color:rgba(218,54,51,.45);color:#ffb3af}
.copybox{
  background:#0b0f14;border:1px solid var(--line);border-radius:8px;padding:10px 12px;
  word-break:break-all;margin:8px 0
}
.grid2{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}
.qr{background:#fff;padding:8px;border-radius:8px;width:190px;height:190px;display:block}
.copybox{cursor:pointer}
.copybox.copied{border-color:var(--ok);box-shadow:0 0 0 2px rgba(46,160,67,.2)}
.qr.big{width:240px;height:240px}
.center{display:flex;justify-content:center;margin:12px 0}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.crumbs{font-size:13px;margin:0 0 14px}
.step{padding:14px 0;border-top:1px solid var(--line)}
.step:first-of-type{border-top:0}
.step p{margin:6px 0}
@media(max-width:640px){
  .stats{grid-template-columns:repeat(2,1fr)}
  .grid2{grid-template-columns:1fr}
  main{padding:20px 14px 32px}
  .card{padding:16px}
}