:root {
  color-scheme: light;
  --bg:#f4f6fa; --panel:#ffffff; --line:#dfe4ee; --ink:#0c1424; --muted:#445065;
  --head:#2a3549; --faint:#7c869a;
  --accent:#1257cf; --ok:#0a6b43; --warn:#8a4d00; --bad:#b31f1f;
  --field:#ffffff; --sunken:#f6f8fc; --shadow:0 1px 2px rgba(20,30,55,.06);
}
* { box-sizing:border-box; }
body {
  margin:0; background:var(--bg); color:var(--ink);
  font:15.5px/1.6 -apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
}
a { color:var(--accent); text-decoration:none; }
a:hover { text-decoration:underline; }
header.top {
  position:sticky; top:0; z-index:50;
  background:var(--panel); border-bottom:1px solid var(--line);
  box-shadow:0 1px 3px rgba(20,30,55,.07);
  padding:12px 20px; display:flex; align-items:center; gap:18px; flex-wrap:wrap;
}
header.top .brand { font-weight:700; font-size:17px; }
header.top nav { display:flex; gap:11px; margin-left:auto; align-items:center; }
header.top nav .sep { color:#b7c0d0; user-select:none; font-weight:300; }
.wrap { max-width:1100px; margin:0 auto; padding:22px 20px 60px; }
h1 { font-size:22px; margin:0 0 4px; }
h2 { font-size:16px; margin:26px 0 10px; color:var(--head); font-weight:700;
     text-transform:uppercase; letter-spacing:.06em; }
.sub { color:var(--muted); margin:0 0 18px; }
.card { background:var(--panel); border:1px solid var(--line); border-radius:10px;
        padding:16px; box-shadow:var(--shadow); }
.grid { display:grid; gap:16px; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); }
table { width:100%; border-collapse:collapse; font-size:14.5px; }
th, td { text-align:left; padding:11px 11px; border-bottom:1px solid var(--line); vertical-align:top; }
th { color:var(--head); font-weight:700; white-space:nowrap; }
tr:last-child td { border-bottom:0; }
td.num { text-align:right; font-variant-numeric:tabular-nums; }
code, .mono { font-family:ui-monospace,Consolas,Menlo,monospace; font-size:13.5px; }
.key { background:var(--sunken); border:1px solid var(--line); border-radius:6px;
       padding:4px 8px; display:inline-block; word-break:break-all;
       font-size:12.5px; line-height:1.45; }
label { display:block; margin:14px 0 6px; color:var(--head); font-size:12.5px; font-weight:600;
        text-transform:uppercase; letter-spacing:.05em; }
input[type=text], input[type=password], input[type=datetime-local], select {
  width:100%; padding:10px 11px; background:var(--field); color:var(--ink);
  border:1px solid var(--line); border-radius:7px; font-size:15.5px;
}
::placeholder { color:var(--faint); opacity:1; }
input[type=text]:focus, input[type=password]:focus,
input[type=datetime-local]:focus, select:focus {
  outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(31,111,235,.14);
}
.btn {
  display:inline-block; padding:9px 15px; border-radius:7px; border:1px solid var(--line);
  background:var(--sunken); color:var(--ink); cursor:pointer; font-size:14.5px;
}
.btn:hover { background:#eaeef6; text-decoration:none; }
.btn.primary { background:var(--accent); border-color:var(--accent); color:#fff; font-weight:600; }
.btn.primary:hover { background:#1a5fd0; }
.btn.danger { color:var(--bad); }
.btn.sm { padding:6px 11px; font-size:13.5px; }
.pill { display:inline-block; padding:3px 10px; border-radius:99px; font-size:12.5px;
        border:1px solid var(--line); }
.pill.on  { color:var(--ok);  border-color:#bfe3d0; background:#eaf7f0; }
.pill.off { color:var(--bad); border-color:#f2c9c9; background:#fdeeee; }
/* A key next to its View / Copy buttons. */
.keyrow { display:inline-flex; align-items:center; gap:7px; flex-wrap:wrap; }
.keyrow .key { margin:0; }
.keyval { cursor:default; }

/* A row whose device reported a stopped / faulted state. */
tr.row-alert td { background:#fdf1f1; }
tr.row-alert td:first-child { box-shadow:inset 3px 0 0 var(--bad); }

.flash { padding:11px 14px; border-radius:8px; margin-bottom:16px; border:1px solid; }
.flash.ok  { background:#eaf7f0; border-color:#bfe3d0; color:var(--ok); }
.flash.err { background:#fdeeee; border-color:#f2c9c9; color:var(--bad); }
.stat { font-size:28px; font-weight:700; }
.stat small { display:block; font-size:12px; color:var(--head); font-weight:600;
              text-transform:uppercase; letter-spacing:.06em; margin-top:4px; }
.muted { color:var(--muted); }
.filters { display:flex; gap:12px; flex-wrap:wrap; align-items:flex-end; }
.filters > div { flex:1 1 160px; min-width:0; }
.filters > div.narrow { flex:0 1 190px; }
.filters label { margin-top:0; }
.scroll { overflow-x:auto; }
.login { max-width:340px; margin:12vh auto; }

/* nav wraps to a second line on small screens - a leading "|" would dangle */
@media (max-width:560px) {
  header.top { padding:10px 14px; gap:10px; }
  header.top nav { gap:14px; margin-left:0; }
  header.top nav .sep { display:none; }
}