:root {
  --bg: #0e1217; --bg2: #161c24; --bg3: #1d2531; --bg4: #232c3a;
  --border: #2a3441; --text: #e6edf3; --muted: #8b98a8;
  --accent: #3b82f6; --accent-h: #2f6fd6;
  --green: #22c55e; --red: #ef4444; --amber: #f59e0b;
  --radius: 10px; --sidebar-w: 260px;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
.muted { color: var(--muted); } .small { font-size: 12px; }
code { background: var(--bg3); padding: 1px 5px; border-radius: 5px; font-size: 12px; }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; }
.hidden { display: none; }
a { color: inherit; text-decoration: none; }

/* ---- login ---- */
.login-body { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 32px; width: 320px; text-align: center; }
.login-logo { font-size: 40px; } .login-card h1 { margin: 8px 0 0; font-size: 20px; }
.login-card label { display: block; text-align: left; margin: 16px 0 0; font-size: 13px; color: var(--muted); }
.login-card input { width: 100%; margin-top: 4px; padding: 9px 11px; background: var(--bg3);
  border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 14px; }
.login-card button { width: 100%; margin-top: 20px; }

/* ---- topbar ---- */
.topbar { display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; background: var(--bg2); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20; }
.brand { font-weight: 600; display: flex; align-items: center; gap: 10px; }
.topbar-right { display: flex; align-items: center; gap: 12px; }
.topbar-right form { margin: 0; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); display: inline-block; }
.dot.ok { background: var(--green); } .dot.bad { background: var(--red); }

/* ---- layout: sidebar + content ---- */
.layout { display: flex; align-items: flex-start; }
.sidebar { width: var(--sidebar-w); flex: 0 0 var(--sidebar-w); background: var(--bg2);
  border-right: 1px solid var(--border); height: calc(100vh - 49px); overflow-y: auto;
  position: sticky; top: 49px; padding: 10px 0; }
.nav-group { margin-bottom: 8px; }
.nav-title { padding: 8px 18px 4px; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.nav-item { display: block; padding: 7px 18px; cursor: pointer; color: #c4cdd9; font-size: 13.5px;
  border-left: 2px solid transparent; }
.nav-item:hover { background: var(--bg3); color: var(--text); }
.nav-item.active { background: var(--bg3); color: #fff; border-left-color: var(--accent); }
.dot-warn { color: var(--amber); font-size: 9px; vertical-align: middle; }

.content { flex: 1; padding: 22px 26px; max-width: 1000px; min-width: 0; }
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 12px; }
.panel-head h2 { margin: 0; font-size: 19px; }

/* ---- cards / kv ---- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.card, .subcard { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.subcard { margin-top: 16px; }
.card h3 { margin: 0 0 12px; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.subcard h3 { margin: 0 0 14px; font-size: 15px; }
.kv { display: flex; justify-content: space-between; gap: 12px; padding: 4px 0; }
.kv span:first-child { color: var(--muted); } .kv span:last-child { text-align: right; word-break: break-all; }

/* ---- forms ---- */
.form-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.field-row { display: flex; flex-direction: column; gap: 5px; }
.field-row > label { font-size: 12.5px; color: var(--muted); }
input, select, textarea { padding: 9px 11px; background: var(--bg3); border: 1px solid var(--border);
  border-radius: 8px; color: var(--text); font-size: 14px; width: 100%; font-family: inherit; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--accent); }
input[readonly] { color: var(--muted); }
.ro-value { padding: 9px 11px; background: var(--bg); border: 1px dashed var(--border); border-radius: 8px; color: var(--muted); }
.radio-row { display: flex; gap: 16px; flex-wrap: wrap; padding-top: 4px; }
.radio, .switch { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; }
.radio input, .switch input { width: auto; }
.row-actions { display: flex; gap: 10px; margin-top: 16px; flex-wrap: wrap; align-items: center; }

/* ---- buttons ---- */
.btn { background: var(--bg3); color: var(--text); border: 1px solid var(--border);
  padding: 9px 16px; border-radius: 8px; cursor: pointer; font-size: 14px; display: inline-block; }
.btn:hover { border-color: var(--accent); } .btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-sm { padding: 5px 11px; font-size: 12.5px; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); }
.btn-danger { background: var(--red); border-color: var(--red); color: #fff; }
.btn-ghost { background: none; }

/* ---- table ---- */
table { width: 100%; border-collapse: collapse; background: var(--bg2);
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: none; }

/* ---- misc ---- */
.badge { padding: 2px 9px; border-radius: 20px; font-size: 12px; }
.badge.on { background: rgba(34,197,94,.15); color: var(--green); }
.badge.off { background: rgba(239,68,68,.15); color: var(--red); }
.alert { padding: 10px 13px; border-radius: 8px; margin: 0 0 14px; font-size: 13px; }
.alert.error { background: rgba(239,68,68,.12); color: #fca5a5; border: 1px solid rgba(239,68,68,.3); }
.alert.warn { background: rgba(245,158,11,.12); color: #fcd34d; border: 1px solid rgba(245,158,11,.3); }
.alert.info { background: rgba(59,130,246,.1); color: #93c5fd; border: 1px solid rgba(59,130,246,.25); }
.raw-out { background: #0a0e13; border: 1px solid var(--border); border-radius: 8px; padding: 12px;
  max-height: 420px; overflow: auto; font-size: 12px; white-space: pre-wrap; word-break: break-all;
  font-family: ui-monospace, Menlo, Consolas, monospace; }
.toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--bg4);
  border: 1px solid var(--border); padding: 12px 20px; border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,.45); z-index: 100; max-width: 90vw; }
.toast.ok { border-color: var(--green); } .toast.err { border-color: var(--red); }
.loader { color: var(--muted); padding: 24px; }
.only-mobile { display: none; }

/* ---- responsive ---- */
@media (max-width: 760px) {
  .only-mobile { display: inline-block; }
  .sidebar { position: fixed; left: 0; top: 49px; z-index: 30; transform: translateX(-100%);
    transition: transform .2s; box-shadow: 4px 0 20px rgba(0,0,0,.4); }
  .sidebar.open { transform: translateX(0); }
  .content { padding: 16px; }
}