/* ===== Base design system (shared by all demos) ===== */
:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f1f3f6;
  --border: #e3e6eb;
  --text: #14171c;
  --muted: #5d6673;
  --faint: #8b93a0;
  --accent: #2f5bea;
  --accent-soft: #e8eefe;
  --ok: #138a52;
  --ok-soft: #e3f5ec;
  --warn: #b26a00;
  --warn-soft: #fdf1dc;
  --bad: #c62f3a;
  --bad-soft: #fde8ea;
  --hl: #fff2a8;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05), 0 1px 3px rgba(16, 24, 40, .06);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
/* Each demo's theme (in its own styles.css) overrides these tokens. */
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
button { font: inherit; color: inherit; cursor: pointer; }
h1, h2, h3, h4 { margin: 0; line-height: 1.25; }

/* Demo notice */
.demo-notice {
  background: var(--accent-soft);
  color: var(--text);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  padding: 8px 16px;
  text-align: center;
}
.demo-notice strong { color: var(--accent); }

/* App shell */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; }
.brand-mark {
  width: 28px; height: 28px; border-radius: 7px;
  background: var(--accent); color: #fff;
  display: grid; place-items: center; font-size: 13px; font-weight: 700;
}
.topbar .spacer { flex: 1; }
.topbar .who { color: var(--muted); font-size: 13px; }

.wrap { max-width: 1320px; margin: 0 auto; padding: 20px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-h {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 16px; border-bottom: 1px solid var(--border);
}
.card-h h2, .card-h h3 { font-size: 14px; font-weight: 650; }
.card-b { padding: 16px; }

.btn {
  border: 1px solid var(--border); background: var(--surface);
  padding: 7px 12px; border-radius: 8px; font-size: 13px; font-weight: 550;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn:hover { background: var(--surface-2); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); background: var(--accent); }
.btn-sm { padding: 4px 9px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: default; }

.pill {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11.5px; font-weight: 600;
  padding: 2px 8px; border-radius: 999px;
  background: var(--surface-2); color: var(--muted);
  white-space: nowrap;
}
.pill.ok { background: var(--ok-soft); color: var(--ok); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.pill.info { background: var(--accent-soft); color: var(--accent); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; display: inline-block; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); padding: 0 12px; }
.tab {
  background: none; border: 0; padding: 10px 12px; font-size: 13px; font-weight: 550;
  color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -1px;
}
.tab[aria-selected="true"] { color: var(--text); border-bottom-color: var(--accent); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: 11.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--faint); font-weight: 600; }
tbody tr:hover { background: var(--surface-2); }
.num { font-variant-numeric: tabular-nums; text-align: right; }
.mono { font-family: var(--mono); font-size: 12.5px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.kpi { padding: 14px 16px; }
.kpi .label { color: var(--muted); font-size: 12px; }
.kpi .value { font-size: 24px; font-weight: 650; margin-top: 2px; font-variant-numeric: tabular-nums; }
.kpi .delta { font-size: 12px; margin-top: 2px; }

.scroll-x { overflow-x: auto; }

/* Case study section */
.case {
  max-width: 1320px; margin: 8px auto 40px; padding: 0 20px;
}
.case .card-b { display: grid; grid-template-columns: 1.3fr 1fr; gap: 28px; padding: 24px; }
.case h2 { font-size: 20px; margin-bottom: 8px; }
.case h3 { font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--faint); margin: 18px 0 6px; }
.case p { margin: 0 0 8px; color: var(--muted); }
.case ul { margin: 0; padding-left: 18px; color: var(--muted); }
.case li { margin: 3px 0; }
.results { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.result { background: var(--surface-2); border-radius: 8px; padding: 12px; }
.result b { display: block; font-size: 20px; color: var(--text); }
.result span { font-size: 12px; color: var(--muted); }
.stack { display: flex; flex-wrap: wrap; gap: 6px; }
.case .cta { margin-top: 18px; display: flex; gap: 10px; flex-wrap: wrap; }

.toast {
  position: fixed; right: 16px; bottom: 16px; z-index: 50;
  background: var(--text); color: var(--bg);
  padding: 10px 14px; border-radius: 8px; font-size: 13px;
  opacity: 0; transform: translateY(8px); transition: .2s; pointer-events: none;
}
.toast.show { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case .card-b { grid-template-columns: 1fr; }
  .wrap { padding: 16px; }
  .topbar { padding: 10px 16px; }
  .topbar .who { display: none; }
}
@media (max-width: 520px) {
  .results { grid-template-columns: 1fr; }
}
/* ===== Theme: dark monitoring / NOC (Device Health Dashboard) ===== */
:root {
  --bg: #070a0e;
  --surface: #0d1218;
  --surface-2: #131a22;
  --border: #1d2733;
  --text: #dfe8f1;
  --muted: #8796a8;
  --faint: #56657a;
  --accent: #22d3ee;
  --accent-soft: rgba(34, 211, 238, .12);
  --ok: #34d399;
  --ok-soft: rgba(52, 211, 153, .12);
  --warn: #fbbf24;
  --warn-soft: rgba(251, 191, 36, .12);
  --bad: #f87171;
  --bad-soft: rgba(248, 113, 113, .13);
  --radius: 6px;
  --shadow: none;
  color-scheme: dark;
}
body { font-family: "Inter", "Segoe UI", system-ui, sans-serif; background:
  radial-gradient(1200px 500px at 70% -10%, rgba(34, 211, 238, .07), transparent 60%), var(--bg); }
.demo-notice { background: #0b1f26; color: #bdeef7; border-bottom: 1px solid #12404b; }
.topbar { background: rgba(13, 18, 24, .85); backdrop-filter: blur(6px); }
.brand-mark { background: transparent; border: 1.5px solid var(--accent); color: var(--accent); border-radius: 4px; font-family: var(--mono); }
.brand { letter-spacing: .02em; }
.card { background: linear-gradient(180deg, rgba(255,255,255,.015), transparent), var(--surface); }
.card-h h2 { font-size: 11.5px; text-transform: uppercase; letter-spacing: .12em; color: var(--muted); font-weight: 700; }
.kpi .label { text-transform: uppercase; letter-spacing: .1em; font-size: 10.5px; }
.kpi .value, .num, .score, .mono { font-family: var(--mono); }
.kpi .value { font-size: 28px; font-weight: 600; }
.pill { border-radius: 4px; font-family: var(--mono); font-size: 11px; font-weight: 600; }
.btn { border-radius: 5px; background: var(--surface-2); }
th { color: var(--faint); }
tbody tr { cursor: pointer; }
tbody tr.sel { background: var(--accent-soft) !important; }
select { font: inherit; font-size: 13px; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: 5px; padding: 6px 8px; }

.live { display: inline-flex; align-items: center; gap: 7px; font-family: var(--mono); font-size: 12px; color: var(--ok); }
.live .dot { box-shadow: 0 0 0 0 rgba(52, 211, 153, .7); animation: ping 1.6s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(52,211,153,.6);} 100% { box-shadow: 0 0 0 8px rgba(52,211,153,0);} }

.noc { display: grid; grid-template-columns: minmax(0, 1fr) 360px; gap: 14px; margin-top: 14px; }
.stack-v { display: grid; gap: 14px; align-content: start; }
.dist { padding: 14px 16px 10px; }
.dist svg { width: 100%; height: 120px; display: block; }
.legend { display: flex; gap: 14px; font-size: 11.5px; color: var(--muted); margin-top: 6px; flex-wrap: wrap; }
.legend i { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

.score { font-weight: 700; font-size: 13px; }
.s-ok { color: var(--ok); } .s-warn { color: var(--warn); } .s-bad { color: var(--bad); }
.spark { width: 90px; height: 22px; display: block; }

.feed { list-style: none; margin: 0; padding: 0; max-height: 330px; overflow-y: auto; }
.feed li { padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 12.5px; animation: slide .35s ease-out; }
.feed li .top { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 3px; }
.feed time { font-family: var(--mono); color: var(--faint); font-size: 11px; }
@keyframes slide { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }

.detail .row { display: flex; justify-content: space-between; padding: 7px 0; border-bottom: 1px dashed var(--border); font-size: 12.5px; }
.detail .row:last-child { border-bottom: 0; }
.detail .row span:last-child { font-family: var(--mono); }
.ai-box { margin-top: 12px; padding: 12px; border: 1px solid rgba(34,211,238,.35); background: var(--accent-soft); border-radius: 6px; font-size: 12.5px; }
.ai-box b { color: var(--accent); font-family: var(--mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; display: block; margin-bottom: 4px; }
.meter { height: 6px; background: var(--surface-2); border-radius: 3px; overflow: hidden; margin-top: 3px; }
.meter i { display: block; height: 100%; }

.case .card { background: var(--surface); }
.case .result b { font-family: var(--mono); color: var(--accent); }

@media (max-width: 1100px) {
  .noc { grid-template-columns: 1fr; }
}