:root{
  --ink:#0E1726; --ink-2:#172439; --ink-line:#243450;
  --surface:#F5F6F9; --card:#FFFFFF; --line:#E5E8EF;
  --green:#1FBF75; --green-d:#169C5F; --green-soft:#E6F7EF;
  --amber:#E8A317; --amber-soft:#FBF1DC;
  --red:#E5484D; --red-soft:#FBE7E8;
  --blue:#3B6FE0;
  --text:#1C2838; --muted:#6E7C95; --muted-2:#9AA6BC;
  --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --r:10px; --shadow:0 1px 2px rgba(16,23,38,.06),0 4px 16px rgba(16,23,38,.04);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:var(--sans);color:var(--text);background:var(--surface);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}

/* ---- Shell ---- */
.shell{display:flex;min-height:100vh}
.sidebar{width:236px;background:var(--ink);color:#C9D3E4;display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0}
.brand{display:flex;align-items:center;gap:10px;padding:18px 20px;border-bottom:1px solid var(--ink-line)}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(31,191,117,.18)}
.brand b{color:#fff;font-size:15px;letter-spacing:.2px}
.brand small{display:block;color:var(--muted-2);font-size:11px;font-weight:500;letter-spacing:.5px;text-transform:uppercase}
.nav{padding:10px 12px;flex:1;overflow:auto}
.nav a{display:flex;align-items:center;gap:11px;color:#AEBAD0;padding:9px 12px;border-radius:8px;font-weight:500;margin-bottom:2px}
.nav a:hover{background:var(--ink-2);color:#fff;text-decoration:none}
.nav a.active{background:var(--ink-2);color:#fff}
.nav a.active .ic{color:var(--green)}
.nav .ic{width:18px;text-align:center;font-size:15px;opacity:.9}
.nav .sect{font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--muted-2);padding:14px 12px 6px}
.side-foot{padding:14px 16px;border-top:1px solid var(--ink-line);font-size:12px;color:var(--muted-2)}
.side-foot b{color:#dfe6f2}

.main{margin-left:236px;flex:1;display:flex;flex-direction:column;min-width:0}
.topbar{height:60px;background:var(--card);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;position:sticky;top:0;z-index:5}
.topbar h1{font-size:17px;margin:0;font-weight:650}
.content{padding:26px 28px;max-width:1180px;width:100%}

/* ---- Usage meter ---- */
.usage{display:flex;align-items:center;gap:14px}
.usage .meter{width:160px;height:7px;background:var(--line);border-radius:5px;overflow:hidden}
.usage .meter span{display:block;height:100%;background:var(--green);border-radius:5px}
.usage .num{font-family:var(--mono);font-size:12px;color:var(--muted)}
.usage .num b{color:var(--text)}

/* ---- Cards / grid ---- */
.grid{display:grid;gap:16px}
.g-4{grid-template-columns:repeat(4,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.card.pad{padding:18px 20px}
.card h2{font-size:14px;margin:0 0 14px;font-weight:650}
.card h3{font-size:13px;margin:0 0 10px;font-weight:650;color:var(--muted)}

.stat .label{font-size:11px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);font-weight:600}
.stat .value{font-family:var(--mono);font-size:30px;font-weight:600;margin-top:6px;letter-spacing:-1px}
.stat .sub{font-size:12px;color:var(--muted-2);margin-top:2px;font-family:var(--mono)}
.stat .value.green{color:var(--green-d)} .stat .value.amber{color:var(--amber)}

/* ---- Pills / chips ---- */
.pill{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:650;padding:3px 9px;border-radius:20px;letter-spacing:.3px}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.pill.connected,.pill.running,.pill.sent,.pill.completed,.pill.active,.pill.paid{color:var(--green-d);background:var(--green-soft)}
.pill.disconnected,.pill.failed,.pill.suspended,.pill.expired{color:var(--red);background:var(--red-soft)}
.pill.qr,.pill.connecting,.pill.paused,.pill.scheduled,.pill.draft,.pill.pending,.pill.created{color:var(--amber);background:var(--amber-soft)}
.chip{display:inline-block;font-family:var(--mono);font-size:11px;padding:2px 8px;border-radius:6px;background:var(--surface);border:1px solid var(--line);color:var(--muted)}
.chip.warm{background:var(--amber-soft);border-color:#F1E0BD;color:#9A6B0E}

/* ---- Tables ---- */
table{width:100%;border-collapse:collapse}
th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);font-weight:600;padding:10px 12px;border-bottom:1px solid var(--line)}
td{padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
tr:last-child td{border-bottom:none}
td.mono,.mono{font-family:var(--mono)}
.t-wrap{overflow:auto}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:7px;font-family:var(--sans);font-size:13px;font-weight:600;padding:8px 15px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--text);cursor:pointer;transition:.12s}
.btn:hover{border-color:#cfd5e0;text-decoration:none}
.btn.primary{background:var(--green);border-color:var(--green);color:#fff}
.btn.primary:hover{background:var(--green-d);border-color:var(--green-d)}
.btn.dark{background:var(--ink);border-color:var(--ink);color:#fff}
.btn.danger{color:var(--red);border-color:#f0c9cb}
.btn.danger:hover{background:var(--red-soft)}
.btn.sm{padding:5px 10px;font-size:12px}
.btn:disabled{opacity:.5;cursor:not-allowed}

/* ---- Forms ---- */
label.fld{display:block;margin-bottom:14px}
label.fld .lab{display:block;font-size:12px;font-weight:600;color:var(--muted);margin-bottom:5px}
input,select,textarea{width:100%;font-family:var(--sans);font-size:14px;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text)}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px rgba(31,191,117,.12)}
textarea{resize:vertical;min-height:90px;font-family:var(--mono);font-size:13px}
.row{display:flex;gap:14px}.row>*{flex:1}
.hint{font-size:12px;color:var(--muted-2);margin-top:4px}

/* ---- Misc ---- */
.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.page-head .sub{color:var(--muted);font-size:13px;margin-top:2px}
.empty{text-align:center;padding:48px 20px;color:var(--muted)}
.empty .big{font-size:15px;color:var(--text);font-weight:600;margin-bottom:6px}
.banner{display:flex;gap:12px;padding:13px 16px;border-radius:var(--r);font-size:13px;margin-bottom:20px;border:1px solid}
.banner.warn{background:var(--amber-soft);border-color:#F1E0BD;color:#7A5408}
.banner.warn b{color:#5e4106}
.mb0{margin-bottom:0}.mt16{margin-top:16px}.mt24{margin-top:24px}
.flex{display:flex;align-items:center;gap:10px}.between{justify-content:space-between}
.spacer{flex:1}

/* progress */
.progress{height:10px;background:var(--line);border-radius:6px;overflow:hidden}
.progress span{display:block;height:100%;background:var(--green);transition:width .4s}
.qrbox{display:flex;flex-direction:column;align-items:center;gap:14px;padding:24px;text-align:center}
.qrbox img{width:240px;height:240px;border:1px solid var(--line);border-radius:8px;background:#fff}

/* ---- Auth ---- */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:radial-gradient(1200px 500px at 50% -10%,rgba(31,191,117,.10),transparent),var(--ink)}
.auth-card{width:380px;background:var(--card);border-radius:14px;padding:32px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.auth-card .brand{border:none;padding:0 0 18px}
.auth-card h1{font-size:19px;margin:0 0 4px}
.auth-card .sub{color:var(--muted);font-size:13px;margin-bottom:20px}
.auth-err{background:var(--red-soft);color:var(--red);font-size:13px;padding:9px 12px;border-radius:8px;margin-bottom:14px;font-weight:500}
.auth-foot{text-align:center;margin-top:16px;font-size:13px;color:var(--muted)}

@media(max-width:860px){
  .sidebar{width:64px}.brand b,.brand small,.nav a span:last-child,.nav .sect,.side-foot{display:none}
  .nav a{justify-content:center}.main{margin-left:64px}
  .g-4{grid-template-columns:repeat(2,1fr)}.g-3,.g-2{grid-template-columns:1fr}
  .content{padding:18px}.usage .meter{width:90px}
}