:root {
  --bg:#0A1628;--surface:#122039;--surface-2:#1A2E4A;--border:#1E3556;
  --blue:#1E91D6;--blue-dim:rgba(30,145,214,.13);
  --orange:#F58020;--orange-dim:rgba(245,128,32,.13);
  --text:#D8E8F5;--muted:#5A7A9A;
  --ok:#2ECC71;--ok-dim:rgba(46,204,113,.13);
  --warn:#F0B030;--err:#EF5050;
  --sidebar-w:220px;
  --font-ui:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --font-mono:'JetBrains Mono','Fira Code','SF Mono','Consolas',monospace;
}
:root.light {
  --bg:#EDF3FA;--surface:#FFFFFF;--surface-2:#E2EBF5;--border:#C4D4E6;
  --blue:#1278B8;--blue-dim:rgba(18,120,184,.10);
  --orange:#E06A10;--orange-dim:rgba(224,106,16,.10);
  --text:#0C1E30;--muted:#5A7A9A;
  --ok:#1E9E52;--ok-dim:rgba(30,158,82,.12);
  --warn:#C88000;--err:#D03030;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
body{background:var(--bg);color:var(--text);font-family:var(--font-ui);font-size:14px;line-height:1.6;min-height:100vh;transition:background .2s,color .2s;}
.app{display:flex;min-height:100vh;}
.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;bottom:0;left:0;overflow-y:auto;transition:background .2s,border-color .2s;}
.sidebar-brand{padding:18px 16px 14px;border-bottom:1px solid var(--border);}
.brand-row{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.logo-mark{width:32px;height:32px;background:var(--orange);border-radius:7px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.brand-text{line-height:1.2;}
.brand-text .s4t{font-size:13px;font-weight:700;letter-spacing:.01em;}
.brand-text .s4t .s4t-word{color:var(--blue);}
.brand-text .s4t .s4t-num{color:var(--orange);}
.brand-text .sub{font-size:11px;color:var(--muted);font-family:var(--font-mono);}
.device-card{background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:10px 12px;display:flex;flex-direction:column;gap:4px;transition:background .2s;}
.device-card .dlabel{color:var(--muted);text-transform:uppercase;letter-spacing:.07em;font-size:10px;}
.device-card .dval{font-family:var(--font-mono);color:var(--text);font-size:11px;word-break:break-all;}
.device-card .dname{color:var(--blue);font-weight:600;font-size:12px;}
.status-dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:5px;flex-shrink:0;}
.dot-ok{background:var(--ok);box-shadow:0 0 5px var(--ok);}
.dot-warn{background:var(--warn);}
.dot-err{background:var(--err);}
.conn-row{display:flex;align-items:center;font-size:11px;color:var(--muted);}
.conn-row.connected{color:var(--ok);}
nav.sidebar-nav{flex:1;padding:10px 0;}
nav.sidebar-nav .nav-sect{padding:6px 16px 2px;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);}
nav.sidebar-nav a{display:flex;align-items:center;gap:9px;padding:7px 16px;color:var(--muted);text-decoration:none;font-size:13px;transition:background .12s,color .12s;border-left:2px solid transparent;}
nav.sidebar-nav a:hover{background:var(--blue-dim);color:var(--text);}
nav.sidebar-nav a.active{color:var(--blue);border-left-color:var(--blue);background:var(--blue-dim);}
nav.sidebar-nav a svg{flex-shrink:0;opacity:.65;}
nav.sidebar-nav a.active svg{opacity:1;}
.sidebar-footer{padding:11px 16px;border-top:1px solid var(--border);font-size:11px;color:var(--muted);display:flex;align-items:center;justify-content:space-between;gap:8px;}
.sidebar-footer a{color:var(--muted);text-decoration:none;}
.sidebar-footer a:hover{color:var(--err);}
.theme-toggle{background:var(--surface-2);border:1px solid var(--border);border-radius:20px;display:flex;align-items:center;padding:2px;gap:1px;cursor:pointer;}
.theme-toggle .tog-opt{padding:2px 7px;border-radius:16px;font-size:11px;color:var(--muted);transition:background .15s,color .15s;user-select:none;display:flex;align-items:center;}
.theme-toggle .tog-opt.on{background:var(--blue);color:#fff;}
.main{margin-left:var(--sidebar-w);flex:1;display:flex;flex-direction:column;min-height:100vh;}
.page-header{padding:18px 24px 16px;display:flex;align-items:baseline;justify-content:space-between;border-bottom:1px solid var(--border);}
.page-header h1{font-size:18px;font-weight:600;letter-spacing:-.01em;}
.page-header .ts{font-family:var(--font-mono);font-size:11px;color:var(--muted);}
.page-body{padding:18px 24px;display:flex;flex-direction:column;gap:14px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media(max-width:860px){.grid-2{grid-template-columns:1fr;}}
.card{background:var(--surface);border:1px solid var(--border);border-radius:8px;overflow:hidden;transition:background .2s,border-color .2s;}
.card-head{display:flex;align-items:center;justify-content:space-between;padding:11px 16px;border-bottom:1px solid var(--border);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);}
.badge{font-size:10px;padding:2px 8px;border-radius:10px;font-weight:500;text-transform:none;letter-spacing:0;}
.badge-ok{background:var(--ok-dim);color:var(--ok);}
.badge-warn{background:rgba(240,176,48,.14);color:var(--warn);}
.badge-err{background:rgba(239,80,80,.14);color:var(--err);}
.kv-list{list-style:none;padding:4px 0;}
.kv-list li{display:flex;align-items:baseline;gap:8px;padding:6px 16px;border-bottom:1px solid var(--border);font-size:13px;}
.kv-list li:last-child{border-bottom:none;}
.kv-list .k{flex-shrink:0;width:130px;color:var(--muted);font-size:12px;}
.kv-list .v{font-family:var(--font-mono);font-size:12px;color:var(--text);word-break:break-all;}
.kv-list .v.ok{color:var(--ok);}
.kv-list .v.warn{color:var(--warn);}
.kv-list .v.err{color:var(--err);}
.tbl-wrap{overflow-x:auto;}
.svc-table{width:100%;border-collapse:collapse;font-size:12px;}
.svc-table th{text-align:left;padding:8px 16px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);border-bottom:1px solid var(--border);}
.svc-table td{padding:9px 16px;border-bottom:1px solid var(--border);font-family:var(--font-mono);font-size:12px;vertical-align:middle;color:var(--muted);}
.svc-table tr:last-child td{border-bottom:none;}
.svc-table td.name{font-family:var(--font-ui);font-weight:500;color:var(--text);}
.svc-table td.port{color:var(--blue);}
.svc-list{list-style:none;padding:6px 16px;}
.svc-list li{font-family:var(--font-mono);font-size:12px;color:var(--muted);padding:3px 0;border-bottom:1px solid var(--border);}
.svc-list li:last-child{border-bottom:none;}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:7px 16px;border-radius:5px;border:none;font:600 12px var(--font-ui);cursor:pointer;transition:opacity .15s;letter-spacing:.02em;white-space:nowrap;}
.btn:hover{opacity:.82;}
.btn-primary{background:var(--blue);color:#fff;}
.btn-danger{background:var(--err);color:#fff;}
.btn-ok{background:var(--ok);color:#fff;}
.action-list{list-style:none;padding:4px 0;}
.action-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 16px;border-bottom:1px solid var(--border);}
.action-list li:last-child{border-bottom:none;}
.action-list .alabel{font-size:13px;color:var(--text);}
.action-list .adesc{font-size:11px;color:var(--muted);margin-top:2px;}
.form-section{padding:16px;display:flex;flex-direction:column;gap:14px;}
.field-group{display:flex;flex-direction:column;gap:5px;}
.field-group label{font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);}
.field-group input[type=text],.field-group input[type=password],.field-group input[type=url]{background:var(--surface-2);border:1px solid var(--border);border-radius:5px;color:var(--text);font:13px/1 var(--font-ui);padding:9px 12px;outline:none;transition:border-color .15s,background .2s;}
.field-group input:focus{border-color:var(--blue);}
.file-row{display:flex;align-items:center;gap:8px;}
.file-label{flex:1;min-width:0;background:var(--surface-2);border:1px dashed var(--border);border-radius:5px;padding:7px 12px;font-size:12px;color:var(--muted);cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:border-color .15s;}
.file-label:hover{border-color:var(--blue);}
.nic-block{padding:12px 16px;border-bottom:1px solid var(--border);}
.nic-block:last-child{border-bottom:none;}
.nic-head{display:flex;align-items:center;gap:8px;margin-bottom:8px;}
.nic-name{font-weight:600;color:var(--text);font-size:13px;}
.nic-grid{display:grid;grid-template-columns:110px 1fr;gap:4px 12px;font-size:12px;}
.nic-grid .k{color:var(--muted);}
.nic-grid .v{font-family:var(--font-mono);color:var(--text);word-break:break-all;}
.pre-block{margin:0;padding:14px 16px;font-family:var(--font-mono);font-size:11px;color:var(--text);white-space:pre;overflow-x:auto;line-height:1.5;}
.error-banner{background:rgba(239,80,80,.12);border:1px solid rgba(239,80,80,.3);border-radius:6px;padding:12px 16px;color:var(--err);font-size:13px;margin-bottom:4px;}
.inline-input{background:var(--surface-2);border:1px solid var(--border);border-radius:5px;color:var(--text);font:13px/1 var(--font-ui);padding:7px 10px;outline:none;width:160px;transition:border-color .15s;}
.inline-input:focus{border-color:var(--blue);}
.login-page{min-height:100vh;background:var(--bg);display:flex;align-items:center;justify-content:center;padding:20px;transition:background .2s;}
.login-layout{display:flex;flex-direction:column;align-items:center;gap:24px;width:100%;max-width:820px;}
.login-side{width:100%;max-width:380px;}
.login-logo{display:flex;flex-direction:column;align-items:center;}
.s4t-cloud{display:block;width:220px;height:auto;}
.login-logo-sub{font-size:11px;color:var(--muted);font-family:var(--font-mono);text-align:center;margin-top:6px;}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:26px;transition:background .2s,border-color .2s;}
.login-card h2{font-size:16px;font-weight:600;margin-bottom:22px;}
.form-field{display:flex;flex-direction:column;gap:5px;margin-bottom:13px;}
.form-field label{font-size:11px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);}
.form-field input{background:var(--surface-2);border:1px solid var(--border);border-radius:5px;color:var(--text);font:13px/1 var(--font-ui);padding:9px 12px;outline:none;transition:border-color .15s,background .2s;}
.form-field input:focus{border-color:var(--blue);}
.btn-login{width:100%;background:var(--orange);color:#fff;border:none;border-radius:5px;padding:10px;font:700 13px var(--font-ui);cursor:pointer;margin-top:6px;transition:opacity .15s;letter-spacing:.02em;}
.btn-login:hover{opacity:.86;}
.login-footer{text-align:center;margin-top:18px;font-size:11px;color:var(--muted);}
.login-error{background:rgba(239,80,80,.12);border:1px solid rgba(239,80,80,.3);border-radius:5px;padding:8px 12px;color:var(--err);font-size:12px;margin-top:10px;}
@media(min-width:640px){
  .login-layout{flex-direction:row;align-items:center;justify-content:center;gap:56px;}
  .s4t-cloud{width:280px;}
  .login-side{max-width:360px;}
}