:root{
  --bg:#0a0e16; --bg2:#0d1320; --card:#111827; --card2:#0f172a;
  --border:#1e293b; --border2:#273449;
  --text:#e5e9f0; --muted:#8b98ad; --dim:#5b6778;
  --green:#10b981; --green-bg:rgba(16,185,129,.12);
  --red:#ef4444; --red-bg:rgba(239,68,68,.12);
  --blue:#3b82f6; --blue-bg:rgba(59,130,246,.12);
  --amber:#f59e0b; --amber-bg:rgba(245,158,11,.12);
  --radius:14px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(59,130,246,.08), transparent 60%),
    radial-gradient(900px 500px at -10% 110%, rgba(16,185,129,.06), transparent 60%),
    var(--bg);
  color:var(--text);
  font-family:'Inter','Segoe UI',system-ui,-apple-system,sans-serif;
  font-size:14.5px; line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--blue)}
button{font-family:inherit}

/* ---------- login ---------- */
#login-screen{
  position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
  background:var(--bg);z-index:100;
}
.login-card{
  width:min(400px,92vw);background:var(--card);border:1px solid var(--border);
  border-radius:20px;padding:38px 34px;box-shadow:0 30px 80px rgba(0,0,0,.5);
}
.login-card h1{font-size:26px;letter-spacing:.5px;margin-bottom:4px}
.login-card .sub{color:var(--muted);margin-bottom:26px;font-size:13.5px}
.login-card input{margin-bottom:14px}
.login-card button{width:100%}
#login-err{color:var(--red);font-size:13px;margin-top:10px;min-height:18px}

/* ---------- layout ---------- */
#app{display:none;min-height:100vh}
header{
  display:flex;align-items:center;gap:18px;padding:14px 26px;
  background:rgba(13,19,32,.85);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);position:sticky;top:0;z-index:50;
}
.logo{font-size:19px;font-weight:800;letter-spacing:1.5px}
.logo b{color:var(--green)}
.badge{
  font-size:11px;font-weight:700;letter-spacing:1.2px;padding:4px 11px;
  border-radius:999px;border:1px solid;
}
.badge.paper{color:var(--blue);border-color:var(--blue);background:var(--blue-bg)}
.badge.halt{color:var(--red);border-color:var(--red);background:var(--red-bg);cursor:pointer}
.badge.ok{color:var(--green);border-color:var(--green);background:var(--green-bg)}
header .spacer{flex:1}
#clock{color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}

nav{display:flex;gap:4px;padding:10px 22px 0;border-bottom:1px solid var(--border);
  background:var(--bg2);position:sticky;top:61px;z-index:49;flex-wrap:wrap}
nav button{
  background:none;border:none;color:var(--muted);padding:11px 18px;cursor:pointer;
  font-size:14px;font-weight:600;border-bottom:2px solid transparent;transition:.15s;
}
nav button:hover{color:var(--text)}
nav button.active{color:var(--text);border-bottom-color:var(--green)}

main{padding:24px;max-width:1360px;margin:0 auto}
.tab{display:none}
.tab.active{display:block}

/* ---------- cards, grids ---------- */
.grid{display:grid;gap:16px}
.g-stats{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.g-2{grid-template-columns:1.6fr 1fr}
@media(max-width:980px){.g-2{grid-template-columns:1fr}}
.card{
  background:linear-gradient(180deg,var(--card),var(--card2));
  border:1px solid var(--border);border-radius:var(--radius);padding:20px;
}
.card h3{font-size:13px;text-transform:uppercase;letter-spacing:1.2px;
  color:var(--muted);margin-bottom:14px;font-weight:700}
.stat .v{font-size:26px;font-weight:800;font-variant-numeric:tabular-nums}
.stat .s{color:var(--muted);font-size:12.5px;margin-top:2px}
.pos{color:var(--green)} .neg{color:var(--red)} .neu{color:var(--muted)}

/* ---------- tables ---------- */
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.8px;color:var(--muted);
  text-align:left;padding:8px 10px;border-bottom:1px solid var(--border)}
td{padding:10px;border-bottom:1px solid rgba(30,41,59,.55);font-size:13.5px}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(59,130,246,.04)}
.side{font-weight:700;font-size:12px;letter-spacing:.8px;padding:3px 9px;border-radius:6px}
.side.long{color:var(--green);background:var(--green-bg)}
.side.short{color:var(--red);background:var(--red-bg)}
.tag{font-size:11px;padding:2px 8px;border-radius:6px;background:var(--blue-bg);color:var(--blue)}
.empty{color:var(--dim);padding:22px;text-align:center;font-size:13.5px}

/* ---------- forms & buttons ---------- */
input,select{
  width:100%;background:#0b1120;border:1px solid var(--border2);color:var(--text);
  border-radius:10px;padding:11px 13px;font-size:14px;outline:none;transition:.15s;
}
input:focus,select:focus{border-color:var(--blue)}
label{display:block;font-size:12px;color:var(--muted);margin:0 0 5px 2px;
  text-transform:uppercase;letter-spacing:.8px;font-weight:600}
.field{margin-bottom:14px}
.row{display:flex;gap:12px}.row>*{flex:1}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--blue);color:#fff;border:none;border-radius:10px;
  padding:11px 20px;font-size:14px;font-weight:700;cursor:pointer;transition:.15s;
}
.btn:hover{filter:brightness(1.12)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.green{background:var(--green)} .btn.red{background:var(--red)}
.btn.ghost{background:transparent;border:1px solid var(--border2);color:var(--text)}
.btn.sm{padding:6px 12px;font-size:12.5px;border-radius:8px}
.seg{display:flex;background:#0b1120;border:1px solid var(--border2);border-radius:10px;overflow:hidden}
.seg button{flex:1;background:none;border:none;color:var(--muted);padding:10px;cursor:pointer;font-weight:700;font-size:13.5px}
.seg button.on.long{background:var(--green-bg);color:var(--green)}
.seg button.on.short{background:var(--red-bg);color:var(--red)}
.seg button.on.n{background:var(--blue-bg);color:var(--blue)}

/* ---------- switch ---------- */
.switch{position:relative;width:52px;height:28px;flex:none;cursor:pointer}
.switch input{display:none}
.switch .sl{position:absolute;inset:0;background:#1e293b;border-radius:999px;transition:.2s}
.switch .sl:before{content:'';position:absolute;width:22px;height:22px;border-radius:50%;
  background:#8b98ad;top:3px;left:3px;transition:.2s}
.switch input:checked + .sl{background:var(--green)}
.switch input:checked + .sl:before{transform:translateX(24px);background:#fff}

/* ---------- misc ---------- */
#chart{width:100%;height:260px;display:block}
.events{max-height:300px;overflow-y:auto;font-size:13px}
.events div{padding:7px 4px;border-bottom:1px solid rgba(30,41,59,.5);color:var(--muted)}
.events b{color:var(--text);font-weight:600}
.gatelist div{display:flex;gap:10px;padding:7px 4px;border-bottom:1px solid rgba(30,41,59,.5);font-size:13px}
.gatelist .ok{color:var(--green);font-weight:700;flex:none;width:52px}
.gatelist .fail{color:var(--red);font-weight:700;flex:none;width:52px}
.fcbar{display:flex;align-items:center;gap:10px;margin:7px 0;font-size:13px}
.fcbar .nm{width:130px;color:var(--muted);flex:none}
.fcbar .tr{flex:1;height:9px;background:#0b1120;border-radius:5px;position:relative;overflow:hidden}
.fcbar .fill{position:absolute;top:0;bottom:0;border-radius:5px}
.fcbar .vv{width:52px;text-align:right;font-weight:700;font-variant-numeric:tabular-nums}
.bigdir{font-size:34px;font-weight:900;letter-spacing:2px}
.note{font-size:12.5px;color:var(--muted);background:var(--blue-bg);
  border:1px solid rgba(59,130,246,.25);border-radius:10px;padding:11px 14px;margin:12px 0}
.warn{background:var(--amber-bg);border-color:rgba(245,158,11,.3)}
.mt{margin-top:16px}.mb{margin-bottom:16px}
.flexh{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.kv{display:grid;grid-template-columns:auto 1fr;gap:5px 18px;font-size:13.5px}
.kv span:nth-child(odd){color:var(--muted)}
#toast{position:fixed;bottom:26px;left:50%;transform:translateX(-50%);
  background:#1c2840;border:1px solid var(--border2);color:var(--text);
  border-radius:12px;padding:13px 22px;font-size:14px;z-index:200;display:none;
  box-shadow:0 16px 40px rgba(0,0,0,.5);max-width:90vw}
#toast.err{border-color:var(--red);color:#fecaca}
#toast.okk{border-color:var(--green)}
.spin{display:inline-block;width:15px;height:15px;border:2px solid rgba(255,255,255,.3);
  border-top-color:#fff;border-radius:50%;animation:sp 0.7s linear infinite;vertical-align:-2px}
@keyframes sp{to{transform:rotate(360deg)}}
pre.json{background:#0b1120;border:1px solid var(--border);border-radius:10px;
  padding:14px;font-size:12px;overflow:auto;max-height:420px;color:#a5b4cf}
footer{color:var(--dim);text-align:center;padding:26px;font-size:12px}