:root {
  --bg:#030a14;
  --panel:#0b1a2c;
  --border:#3a4858;
  --text:#f2f5f8;
  --muted:#a2adbb;
  --red:#ff4747;
  --yellow:#ffd24a;
  --green:#16c784;
  --cyan:#49c7ff;
}
* { box-sizing:border-box }
body {
  margin:0;
  color:var(--text);
  font-family:Inter,system-ui,-apple-system,sans-serif;
  background:
    radial-gradient(circle at top left,rgba(255,71,71,.13),transparent 24%),
    linear-gradient(180deg,#071321,var(--bg) 38%,#02070f);
}
button { cursor:pointer; font:inherit }
.app { display:grid; grid-template-columns:300px minmax(0,1fr); min-height:100vh }
.topbar {
  grid-column:1/-1;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px 28px;
  border-bottom:1px solid #172337;
  background:#030a14;
}
.brand { color:var(--red); font-size:30px; font-weight:900 }
.brand small { display:block; font-size:12px; letter-spacing:.2em; font-weight:500 }
.status { color:var(--muted); font-weight:700 }
.sidebar {
  padding:22px 16px;
  border-right:1px solid #172337;
  background:linear-gradient(180deg,#06101d,#030a14);
}
.nav,.action {
  display:block;
  width:100%;
  color:var(--text);
  background:transparent;
  border:1px solid transparent;
  border-radius:12px;
  padding:13px 16px;
  margin-bottom:8px;
  font-weight:750;
}
.nav { text-align:left }
.nav.active { color:var(--red); border-color:var(--red); background:#1d111b }
.action { text-align:center; border-color:var(--border); background:#0b1a2c }
.action:hover,.report-btn:hover { border-color:var(--red) }
.sidebar-title {
  color:var(--muted);
  margin:30px 8px 12px;
  font-size:13px;
  letter-spacing:.12em;
  text-transform:uppercase;
}
.connection {
  border:1px solid var(--border);
  border-radius:14px;
  padding:15px;
  color:var(--muted);
  line-height:1.6;
  background:linear-gradient(180deg,#0b1a2c,#081321);
}
.connection strong { color:var(--red) }
main { padding:24px; min-width:0 }
.toolbar { display:flex; justify-content:space-between; gap:16px; margin-bottom:20px }
.toolbar strong { font-size:18px }
.note { color:var(--muted); font-size:13px }
.view { display:none }
.view.active { display:block }
.overview {
  display:grid;
  grid-template-columns:minmax(0,1fr) 300px;
  gap:20px;
  align-items:start;
}
.panel {
  background:linear-gradient(180deg,#0b1a2c,#081321);
  border:1px solid var(--border);
  border-radius:18px;
  padding:20px;
  margin-bottom:18px;
  box-shadow:0 12px 30px rgba(0,0,0,.28);
}
.panel h2 { font-size:19px; margin:0 0 8px }
.chart {
  width:100%;
  height:360px;
  display:block;
  border-radius:12px;
  background:#06101d;
}
.primary .chart { height:520px }
.readings { padding:4px 0 }
.readings h2 { font-size:19px; margin:0 0 14px }
.readings h3 {
  font-size:16px;
  border-top:1px solid var(--border);
  padding-top:16px;
  margin-top:24px;
}
.reading {
  display:flex;
  justify-content:space-between;
  gap:12px;
  align-items:baseline;
  border-bottom:1px solid #17273a;
  padding:10px 0;
}
.reading span { color:var(--muted); font-size:14px }
.reading strong { text-align:right; font-size:17px; overflow-wrap:anywhere }
.range { display:flex; gap:5px; flex-wrap:wrap; margin:10px 0 }
.range button,.report-btn {
  color:var(--text);
  background:#102034;
  border:1px solid var(--border);
  border-radius:9px;
  padding:7px 11px;
}
.range button.active { color:var(--red); border-color:var(--red) }
.report-head {
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
}
.report-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:14px;
  margin-top:20px;
}
.stat { border-top:1px solid var(--border); padding-top:12px }
.stat span { display:block; color:var(--muted); font-size:13px }
.stat strong { display:block; font-size:21px; margin-top:5px }
table { width:100%; border-collapse:collapse; font-size:13px }
th,td {
  padding:10px;
  border-bottom:1px solid #213047;
  text-align:right;
  white-space:nowrap;
}
th:first-child,td:first-child { text-align:left }
.table-wrap { overflow:auto; max-height:450px }
.warning { color:var(--yellow); font-size:13px; margin-top:12px }
@media(max-width:1150px) {
  .app { grid-template-columns:1fr }
  .topbar { grid-column:1 }
  .sidebar { border-right:0; border-bottom:1px solid #172337 }
  .overview { grid-template-columns:1fr }
  .readings { display:grid; grid-template-columns:1fr 1fr; gap:0 20px }
}
@media(max-width:650px) {
  main { padding:14px }
  .readings { display:block }
  .primary .chart { height:330px }
}
@media print {
  body { background:white; color:black }
  .app { display:block }
  .topbar,.sidebar,.toolbar,.report-btn { display:none!important }
  .view { display:none!important }
  .view.active { display:block!important }
  .panel { border:0; box-shadow:none; color:black }
}
/* Top bar: connection status on the right */
.topbar-right { display:flex; align-items:center; gap:18px }
/* Phones: brand on row one, connection status drops to row two so long
   strings ("Demo Stream (simulated data)") never push the page wide. */
@media(max-width:650px) {
  .topbar { flex-wrap:wrap; gap:8px 12px; padding:14px }
  .brand { font-size:24px }
  .brand small { font-size:10px; letter-spacing:.12em }
  .topbar-right { display:contents }
  .status { order:2; flex-basis:100%; min-width:0; overflow-wrap:anywhere; font-size:13px }
}
.disclaimer {
  margin:0 0 18px;
  padding:12px 16px;
  border:1px solid var(--yellow);
  border-radius:10px;
  color:var(--yellow);
  font-size:13px;
  line-height:1.45;
}
.disclaimer strong { color:var(--text) }
.model-list { margin:6px 0 0; padding-left:18px; color:var(--muted); font-size:12px; line-height:1.6 }
.tag,.reading .tag {
  display:inline-block;
  margin-left:6px;
  padding:1px 6px;
  border:1px solid var(--border);
  border-radius:6px;
  color:var(--muted);
  font-size:10px;
  font-weight:700;
  letter-spacing:.06em;
  vertical-align:middle;
}
@media print {
  .disclaimer { color:black; border-color:black }
}