:root{
  --paper:#f3f5f4; --card:#fff; --ink:#14262b; --muted:#5d6e72; --line:#d5dcdb;
  --petrol:#0e5a5f; --petrol-ink:#fff; --amber:#b86a00; --amber-bg:#fff1d6;
  --ok:#1f7a4d; --ok-bg:#dff3e7; --bad:#b3261e; --bad-bg:#fbe1de; --info-bg:#e1eef0;
  --focus:#1a73e8;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme=light]){
    --paper:#10191b; --card:#172326; --ink:#e6eeee; --muted:#92a6a9; --line:#2b3d41;
    --petrol:#4fb3b8; --petrol-ink:#08201f; --amber:#f0b04a; --amber-bg:#3a2b0f;
    --ok:#5fcf93; --ok-bg:#12331f; --bad:#ff8f86; --bad-bg:#3d1916; --info-bg:#173236; --focus:#7ab3ff;
  }
}
*{box-sizing:border-box}
html{font-size:16px}
body{margin:0;background:var(--paper);color:var(--ink);font:400 15px/1.5 "IBM Plex Sans",system-ui,sans-serif;font-variant-numeric:tabular-nums}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.01em}
h1{font-size:1.5rem}h2{font-size:1.15rem}h3{font-size:1rem}
a{color:var(--petrol)}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
button,input,select,textarea{font:inherit;color:inherit}

.shell{display:grid;grid-template-columns:220px 1fr;min-height:100vh}
.rail{background:var(--petrol);color:var(--petrol-ink);padding:20px 16px;display:flex;flex-direction:column;gap:4px}
.rail .brand{font-weight:600;font-size:1.1rem;margin-bottom:20px;letter-spacing:-.01em}
.rail a{color:inherit;text-decoration:none;padding:8px 10px;border-radius:6px;opacity:.85}
.rail a[aria-current=page]{background:rgba(255,255,255,.16);opacity:1;font-weight:500}
.rail a:hover{opacity:1}
.rail .who{margin-top:auto;font-size:.85rem;opacity:.85}
.rail .who button{margin-top:8px}
main{padding:28px 32px 64px;max-width:1100px;width:100%}
.head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.head p{margin:4px 0 0;color:var(--muted)}
.crumb{font-size:.85rem;color:var(--muted);margin-bottom:6px}

.btn{border:1px solid var(--line);background:var(--card);padding:7px 14px;border-radius:6px;cursor:pointer;font-weight:500}
.btn:hover{border-color:var(--petrol)}
.btn.primary{background:var(--petrol);color:var(--petrol-ink);border-color:var(--petrol)}
.btn.danger{color:var(--bad)}
.btn.small{padding:4px 10px;font-size:.87rem}
.btn[disabled]{opacity:.5;cursor:default}
.rail .btn{background:transparent;color:inherit;border-color:rgba(255,255,255,.4)}

.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);margin-bottom:20px;overflow-x:auto}
.tabs a{padding:9px 14px;text-decoration:none;color:var(--muted);border-bottom:2px solid transparent;white-space:nowrap}
.tabs a[aria-current=page]{color:var(--ink);border-color:var(--petrol);font-weight:500}

.panel{background:var(--card);border:1px solid var(--line);border-radius:8px}
.tablewrap{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:10px 14px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-weight:500;color:var(--muted);font-size:.87rem;white-space:nowrap}
tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right}
td.actions{text-align:right;white-space:nowrap}
tbody tr.click{cursor:pointer}tbody tr.click:hover{background:var(--info-bg)}
.empty{padding:36px 20px;text-align:center;color:var(--muted)}
.empty strong{display:block;color:var(--ink);margin-bottom:4px}

.badge{display:inline-block;padding:2px 9px;border-radius:99px;font-size:.82rem;font-weight:500;background:var(--info-bg);color:var(--ink)}
.badge.ok{background:var(--ok-bg);color:var(--ok)}
.badge.bad{background:var(--bad-bg);color:var(--bad)}
.badge.warn{background:var(--amber-bg);color:var(--amber)}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-bottom:20px}
.stat{padding:14px 16px}
.stat .v{font-size:1.6rem;font-weight:600}
.stat .l{color:var(--muted);font-size:.87rem}
.signal{display:flex;gap:12px;align-items:center;padding:16px 18px;margin-bottom:20px}
.dot{width:12px;height:12px;border-radius:50%;background:var(--muted);flex:none}
.dot.ok{background:var(--ok)}.dot.warn{background:var(--amber)}.dot.bad{background:var(--bad)}

form.stack{display:grid;gap:14px}
label{display:grid;gap:4px;font-weight:500;font-size:.92rem}
label small{font-weight:400;color:var(--muted)}
input[type=text],input[type=email],input[type=password],input[type=search],select{padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:var(--card);width:100%}
.check{display:flex;gap:8px;align-items:center;font-weight:400}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.toolbar{display:flex;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.toolbar input,.toolbar select{width:auto;min-width:200px}

dialog{border:1px solid var(--line);border-radius:10px;padding:0;background:var(--card);color:var(--ink);width:min(480px,calc(100vw - 32px))}
dialog::backdrop{background:rgba(10,20,22,.5)}
dialog .in{padding:22px;display:grid;gap:14px}
dialog .foot{display:flex;justify-content:flex-end;gap:8px}
.code{font:500 1.6rem/1 "IBM Plex Mono",monospace;letter-spacing:.08em;text-align:center;padding:14px;background:var(--info-bg);border-radius:6px;user-select:all}
.qr{display:grid;place-items:center;padding:10px;background:#fff;border-radius:6px}
.err{color:var(--bad);min-height:1.2em;font-size:.9rem}
.note{color:var(--muted);font-size:.9rem}
.mono{font-family:"IBM Plex Mono",monospace}

.login{min-height:100vh;display:grid;place-items:center;padding:16px}
.login .panel{width:min(380px,100%);padding:28px}
.login h1{margin-bottom:4px}.login p{margin:0 0 18px;color:var(--muted)}

#toasts{position:fixed;right:16px;bottom:16px;display:grid;gap:8px;z-index:50}
.toast{background:var(--ink);color:var(--paper);padding:10px 14px;border-radius:6px;max-width:340px}
.toast.bad{background:var(--bad);color:#fff}

@media (max-width:760px){
  .shell{grid-template-columns:1fr}
  .rail{flex-direction:row;flex-wrap:wrap;align-items:center;padding:10px 14px}
  .rail .brand{margin:0 12px 0 0}.rail .who{margin:0 0 0 auto}
  main{padding:20px 16px 48px}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}