/* ADM Meters dashboard — committed light theme */
:root {
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --grid: #e1e0d9;
  --baseline: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --blue: #2a78d6;
  --blue-600: #184f95;
  --blue-100: #cde2fb;
  --aqua: #1baf7a;
  --good: #0ca30c;
  --good-text: #006300;
  --warning: #fab219;
  --critical: #d03b3b;
  --radius: 10px;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink);
  background: var(--page);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--blue-600); text-decoration: none; }
button { font-family: inherit; }

/* ---------- layout ---------- */
.shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 232px; flex: 0 0 232px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.main { flex: 1; min-width: 0; padding: 28px 32px 48px; }

.brand {
  display: flex; align-items: center; gap: 10px;
  padding: 20px 18px 16px;
}
.brand svg { flex: 0 0 auto; }
.brand .name { font-weight: 700; font-size: 15px; letter-spacing: -0.01em; }
.brand .sub { font-size: 11px; color: var(--muted); margin-top: 1px; }

.nav { padding: 8px 10px; display: flex; flex-direction: column; gap: 2px; }
.nav-label {
  font-size: 10.5px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--muted); padding: 14px 10px 6px;
}
.nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 10px; border-radius: 8px;
  color: var(--ink-2); font-weight: 500;
}
.nav a:hover { background: rgba(11,11,11,0.04); }
.nav a.active { background: var(--blue-100); color: var(--blue-600); }
.nav a .dot {
  width: 7px; height: 7px; border-radius: 50%; flex: 0 0 auto;
  background: var(--baseline);
}
.nav a .dot.online { background: var(--good); }
.nav a span.txt { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.sidebar .foot {
  margin-top: auto; padding: 14px 18px;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.sidebar .foot .who { font-size: 12.5px; color: var(--ink-2); font-weight: 600; }
.sidebar .foot button {
  border: 1px solid var(--border); background: transparent; color: var(--ink-2);
  border-radius: 7px; padding: 5px 10px; font-size: 12px; cursor: pointer;
}
.sidebar .foot button:hover { background: rgba(11,11,11,0.04); }

/* ---------- page header ---------- */
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head h1 { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; margin: 0; }
.page-head .meta { color: var(--muted); font-size: 12.5px; margin-top: 4px; }
.head-actions { display: flex; gap: 8px; align-items: center; }

.btn {
  border: 1px solid var(--border); background: var(--surface); color: var(--ink);
  border-radius: 8px; padding: 7px 13px; font-size: 13px; font-weight: 500; cursor: pointer;
}
.btn:hover { background: #f2f1ee; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.primary:hover { background: #256abf; }
.btn:disabled { opacity: 0.5; cursor: default; }

/* segmented range control */
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); overflow: hidden; }
.seg button {
  border: 0; background: transparent; padding: 6px 12px; font-size: 12.5px;
  color: var(--ink-2); cursor: pointer; font-weight: 500;
}
.seg button + button { border-left: 1px solid var(--border); }
.seg button.active { background: var(--blue-100); color: var(--blue-600); font-weight: 600; }

/* ---------- KPI tiles ---------- */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 20px; }
.kpi {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px;
}
.kpi .label { font-size: 12px; font-weight: 600; color: var(--ink-2); }
.kpi .value { font-size: 26px; font-weight: 700; letter-spacing: -0.02em; margin-top: 6px; }
.kpi .value small { font-size: 14px; font-weight: 600; color: var(--muted); margin-left: 3px; }
.kpi .sub { font-size: 12px; color: var(--muted); margin-top: 4px; }
.kpi .sub .up { color: var(--good-text); font-weight: 600; }

/* ---------- cards / charts ---------- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 1100px) { .grid-2 { grid-template-columns: 1fr; } }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px 20px; margin-bottom: 14px; min-width: 0;
}
.card h2 { font-size: 14px; font-weight: 700; margin: 0; }
.card .card-sub { font-size: 12px; color: var(--muted); margin-top: 2px; }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.chart-wrap { position: relative; height: 260px; }
.chart-wrap.tall { height: 300px; }

/* ---------- table ---------- */
.tbl-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left; font-size: 11px; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted);
  padding: 8px 12px; border-bottom: 1px solid var(--grid); white-space: nowrap;
}
td { padding: 10px 12px; border-bottom: 1px solid var(--grid); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: rgba(42, 120, 214, 0.045); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.clickable { cursor: pointer; }
.dev-name { font-weight: 600; }
.dev-id { font-size: 11.5px; color: var(--muted); font-family: ui-monospace, Menlo, monospace; }

.status {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 600; border-radius: 999px; padding: 3px 10px;
}
.status .d { width: 7px; height: 7px; border-radius: 50%; }
.status.online { background: rgba(12, 163, 12, 0.10); color: var(--good-text); }
.status.online .d { background: var(--good); }
.status.offline { background: rgba(11, 11, 11, 0.06); color: var(--ink-2); }
.status.offline .d { background: var(--baseline); }

.sig { display: inline-flex; align-items: center; gap: 7px; font-variant-numeric: tabular-nums; }
.sigbars { display: inline-flex; align-items: flex-end; gap: 2px; height: 14px; }
.sigbars i { width: 3.5px; border-radius: 1px; background: var(--grid); }
.sigbars i.on { background: var(--blue); }
.sigbars i:nth-child(1) { height: 5px; } .sigbars i:nth-child(2) { height: 8px; }
.sigbars i:nth-child(3) { height: 11px; } .sigbars i:nth-child(4) { height: 14px; }

/* ---------- device detail ---------- */
.crumb { font-size: 12.5px; color: var(--muted); margin-bottom: 6px; }
.crumb a { color: var(--muted); }
.crumb a:hover { color: var(--blue-600); }

.downlink-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.downlink-row select {
  border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px;
  font-family: inherit; font-size: 13px; background: var(--surface); color: var(--ink);
}
.hexline {
  font-family: ui-monospace, Menlo, monospace; font-size: 12.5px;
  background: #f2f1ee; border: 1px solid var(--border); border-radius: 7px;
  padding: 6px 10px; color: var(--ink-2);
}
.note { font-size: 12.5px; color: var(--muted); margin-top: 10px; line-height: 1.5; }
.note b { color: var(--ink-2); }

.toast {
  position: fixed; bottom: 22px; right: 22px; z-index: 50;
  background: var(--ink); color: #fff; font-size: 13px;
  border-radius: 9px; padding: 11px 16px; max-width: 380px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.18);
  opacity: 0; transform: translateY(8px); transition: all 0.25s ease; pointer-events: none;
}
.toast.show { opacity: 1; transform: none; }
.toast.err { background: var(--critical); }

/* ---------- integration page ---------- */
.kv { display: grid; grid-template-columns: 190px 1fr; gap: 8px 16px; font-size: 13px; }
.kv dt { color: var(--muted); font-weight: 500; }
.kv dd { margin: 0; font-family: ui-monospace, Menlo, monospace; font-size: 12.5px; word-break: break-all; }
.copy-line { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.steps { margin: 0; padding-left: 20px; line-height: 1.9; font-size: 13.5px; color: var(--ink-2); }
.steps b { color: var(--ink); }

/* ---------- login ---------- */
.login-body {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(180deg, #f4f7fb 0%, var(--page) 60%);
  padding: 24px;
}
.login-card {
  width: 380px; max-width: 100%;
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  padding: 34px 34px 30px;
  box-shadow: 0 12px 40px rgba(16, 42, 84, 0.08);
}
.login-card .brand { padding: 0 0 6px; }
.login-card h1 { font-size: 18px; margin: 14px 0 2px; }
.login-card .sub2 { color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12.5px; font-weight: 600; color: var(--ink-2); margin-bottom: 6px; }
.field input {
  width: 100%; border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; font-size: 14px; font-family: inherit;
  background: #fff; color: var(--ink);
}
.field input:focus { outline: 2px solid var(--blue-100); border-color: var(--blue); }
.login-card .btn.primary { width: 100%; padding: 10px; font-size: 14px; margin-top: 6px; }
.login-err { color: var(--critical); font-size: 12.5px; min-height: 18px; margin-top: 10px; text-align: center; }
.login-foot { text-align: center; color: var(--muted); font-size: 11.5px; margin-top: 20px; }

.empty { text-align: center; color: var(--muted); padding: 40px 0; font-size: 13px; }

@media (max-width: 860px) {
  .shell { flex-direction: column; }
  .sidebar { width: 100%; flex: none; height: auto; position: static; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .nav-label { display: none; }
  .sidebar .foot { border-top: 0; padding-top: 0; }
  .main { padding: 18px 16px 40px; }
}