:root {
  --bg: #f4f6f9; --panel: #ffffff; --panel-2: #f8fafc; --text: #142032; --muted: #5d6b7e; --line: #e2e7ee;
  --brand: #0b5cab; --brand-2: #0a4a8a; --brand-soft: #e6f0fb; --accent: #12a4d9;
  --ok: #138a52; --ok-soft: #e3f5ec; --warn: #b26a00; --warn-soft: #fff3df; --bad: #c62a2a; --bad-soft: #fde9e9;
  --info: #3b5bdb; --info-soft: #e8edff; --shadow: 0 1px 2px rgba(16,24,40,.06), 0 1px 3px rgba(16,24,40,.08);
  --radius: 10px; --side: 232px; color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1420; --panel: #141d2b; --panel-2: #182334; --text: #e6edf6; --muted: #93a2b7; --line: #243247;
    --brand: #4c9bf0; --brand-2: #79b4f5; --brand-soft: #16304f; --accent: #39c0ef;
    --ok: #3ccf8e; --ok-soft: #12352a; --warn: #f0b04c; --warn-soft: #3a2c14; --bad: #ff6b6b; --bad-soft: #3d1a1d;
    --info: #8ea6ff; --info-soft: #1c2650; --shadow: 0 1px 2px rgba(0,0,0,.4); color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1420; --panel: #141d2b; --panel-2: #182334; --text: #e6edf6; --muted: #93a2b7; --line: #243247;
  --brand: #4c9bf0; --brand-2: #79b4f5; --brand-soft: #16304f; --accent: #39c0ef;
  --ok: #3ccf8e; --ok-soft: #12352a; --warn: #f0b04c; --warn-soft: #3a2c14; --bad: #ff6b6b; --bad-soft: #3d1a1d;
  --info: #8ea6ff; --info-soft: #1c2650; --shadow: 0 1px 2px rgba(0,0,0,.4); color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif; }
a { color: var(--brand); text-decoration: none; } a:hover { text-decoration: underline; }
h1 { font-size: 20px; margin: 0; } h2 { font-size: 16px; margin: 0 0 12px; } h3 { font-size: 14px; margin: 0 0 8px; }
.boot { padding: 40px; color: var(--muted); }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; }

/* layout */
.shell { display: grid; grid-template-columns: var(--side) 1fr; min-height: 100vh; }
.side { background: var(--panel); border-right: 1px solid var(--line); padding: 16px 12px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.logo { display: flex; gap: 10px; align-items: center; font-weight: 700; padding: 4px 8px 18px; }
.logo img { width: 30px; height: 30px; } .logo small { display: block; font-weight: 500; color: var(--muted); font-size: 11.5px; }
.nav a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 8px; color: var(--text); margin-bottom: 2px; }
.nav a:hover { background: var(--panel-2); text-decoration: none; }
.nav a.on { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.nav .count { margin-left: auto; background: var(--bad); color: #fff; border-radius: 10px; font-size: 11px; padding: 0 7px; }
.nav svg { width: 18px; height: 18px; flex: none; }
.main { min-width: 0; }
.top { display: flex; gap: 12px; align-items: center; padding: 12px 24px; background: var(--panel); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5; }
.top .search { flex: 1; max-width: 520px; }
.top .menu-btn { display: none; }
.content { padding: 20px 24px 48px; max-width: 1400px; }
.pagehead { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.pagehead .sub { color: var(--muted); margin-top: 2px; }

/* components */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; min-width: 0; }
.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.kpis { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); color: var(--text); display: block; }
.kpi:hover { text-decoration: none; border-color: var(--brand); }
.kpi .v { font-size: 26px; font-weight: 700; letter-spacing: -.02em; }
.kpi .l { color: var(--muted); font-size: 12.5px; }
.kpi.ok .v { color: var(--ok); } .kpi.bad .v { color: var(--bad); } .kpi.warn .v { color: var(--warn); } .kpi.info .v { color: var(--info); }
.pill { display: inline-flex; align-items: center; gap: 5px; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; white-space: nowrap; background: var(--panel-2); color: var(--muted); border: 1px solid var(--line); }
.pill.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; } .pill.bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.pill.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; } .pill.info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: var(--muted); flex: none; }
.dot.ok { background: var(--ok); } .dot.bad { background: var(--bad); }
.muted { color: var(--muted); } .small { font-size: 12.5px; } .right { text-align: right; } .nowrap { white-space: nowrap; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; } .spacer { flex: 1; }
.stack > * + * { margin-top: 12px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 14px 0; }

/* tables */
.tablewrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 600; background: var(--panel-2); white-space: nowrap; }
tbody tr.click { cursor: pointer; } tbody tr.click:hover { background: var(--panel-2); }
td .t2 { color: var(--muted); font-size: 12.5px; }
.kv { display: grid; grid-template-columns: 160px 1fr; gap: 6px 12px; } .kv > div:nth-child(odd) { color: var(--muted); }
.kv > div { min-width: 0; overflow-wrap: anywhere; }

/* forms */
input, select, textarea { font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; width: 100%; min-width: 0; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--brand-soft); border-color: var(--brand); }
input[type=checkbox] { width: auto; }
textarea { min-height: 160px; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; }
label { display: block; font-size: 12.5px; color: var(--muted); margin-bottom: 4px; font-weight: 600; }
.field { margin-bottom: 12px; } .fields { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0 12px; }
.check { display: flex; gap: 8px; align-items: center; color: var(--text); font-weight: 500; font-size: 14px; }
.hint { font-size: 12px; color: var(--muted); margin-top: 3px; }
button, .btn { font: inherit; font-weight: 600; border: 1px solid var(--line); background: var(--panel); color: var(--text); border-radius: 8px; padding: 7px 12px; cursor: pointer; display: inline-flex; gap: 6px; align-items: center; white-space: nowrap; }
button:hover, .btn:hover { border-color: var(--brand); text-decoration: none; }
button.primary { background: var(--brand); border-color: var(--brand); color: #fff; } button.primary:hover { background: var(--brand-2); }
button.danger { color: var(--bad); border-color: var(--bad-soft); } button.danger:hover { background: var(--bad-soft); border-color: var(--bad); }
button.small { padding: 4px 9px; font-size: 12.5px; }
button:disabled { opacity: .55; cursor: not-allowed; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin: 16px 0; overflow-x: auto; }
.tabs a { padding: 9px 14px; color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; font-weight: 600; }
.tabs a.on { color: var(--brand); border-color: var(--brand); } .tabs a:hover { text-decoration: none; color: var(--text); }
.notice { padding: 10px 12px; border-radius: 8px; background: var(--info-soft); color: var(--text); border-left: 3px solid var(--info); margin-bottom: 12px; }
.notice.warn { background: var(--warn-soft); border-color: var(--warn); } .notice.bad { background: var(--bad-soft); border-color: var(--bad); }
.notice.ok { background: var(--ok-soft); border-color: var(--ok); }

/* charts */
.bars .b { display: grid; grid-template-columns: minmax(120px, 1.2fr) 2fr 44px; gap: 10px; align-items: center; margin: 6px 0; }
.bars .track { height: 10px; background: var(--panel-2); border-radius: 6px; overflow: hidden; border: 1px solid var(--line); }
.bars .fill { height: 100%; background: var(--brand); border-radius: 6px; width: 0; }
.bars .fill.ok { background: var(--ok); }
.bars .name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.spark { display: flex; align-items: flex-end; gap: 3px; height: 60px; }
.spark i { flex: 1; background: var(--brand); opacity: .75; border-radius: 3px 3px 0 0; min-height: 2px; }
.meter { height: 8px; border-radius: 6px; background: var(--panel-2); border: 1px solid var(--line); overflow: hidden; margin-top: 4px; }
.meter i { display: block; height: 100%; width: 0; }
.big { font-size: 28px; font-weight: 700; letter-spacing: -.02em; }

/* login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login .card { width: 100%; max-width: 380px; padding: 28px; }
.login .logo { justify-content: center; padding-bottom: 8px; font-size: 18px; }

/* modal + toast */
.modal-bg { position: fixed; inset: 0; background: rgba(10,16,28,.55); display: grid; place-items: center; z-index: 50; padding: 16px; }
.modal { background: var(--panel); border-radius: 12px; width: 100%; max-width: 520px; max-height: 90vh; overflow: auto; padding: 20px; border: 1px solid var(--line); }
.modal.wide { max-width: 880px; }
#toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 60; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
#toast div { background: var(--text); color: var(--panel); padding: 10px 16px; border-radius: 8px; box-shadow: var(--shadow); max-width: min(560px, 92vw); pointer-events: auto; }
#toast div.bad { background: var(--bad); color: #fff; } #toast div.ok { background: var(--ok); color: #fff; }
.empty { padding: 28px; text-align: center; color: var(--muted); }
.wifi-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.list-plain { list-style: none; padding: 0; margin: 0; } .list-plain li { padding: 8px 0; border-bottom: 1px solid var(--line); } .list-plain li:last-child { border: 0; }

@media (max-width: 980px) {
  .g2, .g3 { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: fixed; inset: 0 auto 0 0; width: 260px; z-index: 40; transform: translateX(-100%); transition: transform .2s; box-shadow: 0 0 40px rgba(0,0,0,.3); }
  .shell.nav-open .side { transform: none; }
  .top { padding: 10px 16px; } .top .menu-btn { display: inline-flex; }
  .content { padding: 16px 16px 40px; }
  .kv { grid-template-columns: 120px 1fr; }
  .wifi-cards { grid-template-columns: 1fr; }
  .bars .b { grid-template-columns: 1fr 1.2fr 36px; }
  .hide-sm { display: none; }
}
.mt { margin-top: 16px; } .mt-s { margin-top: 10px; } .mb { margin-bottom: 16px; } .mb-s { margin-bottom: 10px; }
.f1 { flex: 1; } .f2 { flex: 2; } .w120 { min-width: 120px; } .w140 { min-width: 140px; } .w200 { min-width: 200px; }
.top svg { width: 20px; height: 20px; }
textarea[name=notes] { font-family: inherit; font-size: 14px; min-height: 90px; }