:root{
  --bg:#f4f6f9;--card:#fff;--ink:#0f172a;--mute:#64748b;--line:#e2e8f0;
  --brand:#0f766e;--brand-ink:#fff;--brand-soft:#ccfbf1;
  --ok:#15803d;--ok-soft:#dcfce7;--warn:#b45309;--warn-soft:#fef3c7;
  --err:#b91c1c;--err-soft:#fee2e2;--info:#1d4ed8;--info-soft:#dbeafe;--sec:#7e22ce;--sec-soft:#f3e8ff;
  --side:#0f172a;--side-ink:#cbd5e1;--r:10px;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0b1220;--card:#111a2e;--ink:#e5e7eb;--mute:#94a3b8;--line:#22304a;
    --brand:#14b8a6;--brand-ink:#04211e;--brand-soft:#0d3b38;
    --ok:#4ade80;--ok-soft:#10301e;--warn:#fbbf24;--warn-soft:#3a2b0a;--err:#f87171;--err-soft:#3b1414;
    --info:#60a5fa;--info-soft:#13284d;--sec:#c084fc;--sec-soft:#2c1747;--side:#070c18}
}
*{box-sizing:border-box}
html,body{margin:0}
body{background:var(--bg);color:var(--ink);font:15px/1.7 Tahoma,"Segoe UI",system-ui,sans-serif}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3{margin:0 0 .5rem;line-height:1.4}
h2{font-size:1.25rem}h3{font-size:1rem}
.muted{color:var(--mute)}.small{font-size:.85rem}
.ltr{direction:ltr;unicode-bidi:plaintext;text-align:left}
.num{font-variant-numeric:tabular-nums}

/* auth screens */
.auth{min-height:100vh;display:grid;place-items:center;padding:1rem}
.auth-card{width:100%;max-width:400px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:2rem;box-shadow:0 10px 30px rgba(0,0,0,.06)}
.logo{width:44px;height:44px;border-radius:12px;background:var(--brand);color:var(--brand-ink);display:grid;place-items:center;font-weight:700;margin-bottom:1rem}

/* form */
label{display:block;font-size:.85rem;color:var(--mute);margin:.75rem 0 .25rem}
input,select,textarea{width:100%;padding:.55rem .75rem;border:1px solid var(--line);border-radius:8px;background:var(--card)}
input:focus,select:focus,textarea:focus,button:focus-visible{outline:2px solid var(--brand);outline-offset:1px}
.row{display:flex;gap:.75rem;flex-wrap:wrap;align-items:flex-end}
.row>*{flex:1 1 160px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:1px solid var(--line);background:var(--card);padding:.45rem .9rem;border-radius:8px;cursor:pointer;width:auto}
.btn:hover{border-color:var(--brand)}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn.danger{color:var(--err);border-color:var(--err)}
.btn.sm{padding:.2rem .6rem;font-size:.85rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.full{width:100%;margin-top:1.25rem}
.err-box{background:var(--err-soft);color:var(--err);border-radius:8px;padding:.5rem .75rem;margin-top:.75rem;font-size:.9rem}
.hint{background:var(--info-soft);color:var(--info);border-radius:8px;padding:.6rem .8rem;margin:.75rem 0;font-size:.88rem}

/* layout */
.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
.side{background:var(--side);color:var(--side-ink);padding:1rem .75rem;position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:.25rem}
.brand{display:flex;align-items:center;gap:.6rem;padding:.25rem .5rem 1rem;color:#fff;font-weight:700}
.brand .logo{margin:0;width:36px;height:36px}
.nav a{display:flex;align-items:center;gap:.6rem;padding:.55rem .75rem;border-radius:8px;color:var(--side-ink);text-decoration:none}
.nav a:hover{background:rgba(255,255,255,.07)}
.nav a.active{background:var(--brand);color:var(--brand-ink)}
.side .foot{margin-top:auto;font-size:.82rem;padding:.5rem}
.side .foot button{margin-top:.5rem;width:100%;background:transparent;color:var(--side-ink);border-color:rgba(255,255,255,.25)}
.main{padding:1.5rem;max-width:1200px;width:100%}
.head{display:flex;justify-content:space-between;align-items:center;gap:1rem;flex-wrap:wrap;margin-bottom:1rem}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:1rem 1.1rem;margin-bottom:1rem}
.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:1rem}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:.9rem 1rem}
.stat .v{font-size:1.7rem;font-weight:700;line-height:1.3}
.stat .l{color:var(--mute);font-size:.85rem}

/* table */
.tw{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{text-align:right;padding:.55rem .6rem;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:.8rem;color:var(--mute);font-weight:600;white-space:nowrap}
tr:last-child td{border-bottom:0}
td .acts{display:flex;gap:.4rem;flex-wrap:wrap}
.empty{text-align:center;color:var(--mute);padding:1.5rem}

/* badges */
.badge{display:inline-block;padding:.05rem .55rem;border-radius:99px;font-size:.78rem;white-space:nowrap}
.b-ok,.b-info{background:var(--ok-soft);color:var(--ok)}
.b-info{background:var(--info-soft);color:var(--info)}
.b-warn{background:var(--warn-soft);color:var(--warn)}
.b-error,.b-failed{background:var(--err-soft);color:var(--err)}
.b-security{background:var(--sec-soft);color:var(--sec)}
.b-off,.b-never{background:var(--line);color:var(--mute)}

/* switch */
.sw{position:relative;width:40px;height:22px;border-radius:99px;border:0;background:var(--line);cursor:pointer;padding:0}
.sw::after{content:"";position:absolute;top:3px;right:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:.15s}
.sw.on{background:var(--brand)}
.sw.on::after{right:21px}

/* bars */
.bar{height:8px;background:var(--line);border-radius:99px;overflow:hidden}
.bar>i{display:block;height:100%;background:var(--brand)}
.chart{display:flex;align-items:flex-end;gap:4px;height:140px;padding-top:.5rem}
.chart .col{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;min-width:0}
.chart .col i{display:block;width:100%;max-width:28px;background:var(--brand);border-radius:4px 4px 0 0;min-height:2px}
.chart .col span{font-size:.65rem;color:var(--mute);margin-top:2px;white-space:nowrap}

/* modal */
.modal-bg{position:fixed;inset:0;background:rgba(0,0,0,.5);display:grid;place-items:center;padding:1rem;z-index:50}
.modal{background:var(--card);border-radius:14px;padding:1.5rem;max-width:520px;width:100%;max-height:90vh;overflow:auto}
.modal .acts{display:flex;gap:.5rem;justify-content:flex-start;margin-top:1.25rem}
pre.sample{background:var(--bg);border:1px solid var(--line);border-radius:8px;padding:.6rem;max-height:200px;overflow:auto;direction:ltr;text-align:left;white-space:pre-wrap;word-break:break-all;font-size:.78rem}

#toasts{position:fixed;bottom:1rem;left:1rem;display:flex;flex-direction:column;gap:.5rem;z-index:100}
.toast{background:var(--ink);color:var(--bg);padding:.6rem 1rem;border-radius:8px;box-shadow:0 4px 14px rgba(0,0,0,.25)}
.toast.bad{background:var(--err);color:#fff}

@media (max-width:820px){
  .shell{grid-template-columns:1fr}
  .side{position:static;height:auto;flex-direction:row;flex-wrap:wrap;align-items:center}
  .nav{display:flex;flex-wrap:wrap;gap:.25rem}
  .side .foot{margin:0 auto 0 0}
  .brand{padding:.25rem}
}