:root {
  color-scheme: dark;
  --bg: #0f1419;
  --panel: #171d24;
  --panel-2: #1c2430;
  --line: #2a3441;
  --text: #e9eef5;
  --muted: #9aa7b5;
  --blue: #4dabf7;
  --green: #2fb344;
  --yellow: #f59f00;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.shell {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 24px 18px;
  background: #121820;
  border-right: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  background: #206bc4;
  font-weight: 800;
}

.brand strong,
.brand span {
  display: block;
}

.brand span {
  color: var(--muted);
  font-size: 13px;
}

nav {
  display: grid;
  gap: 6px;
}

nav a {
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--muted);
  font-weight: 600;
}

nav a.active,
nav a:hover {
  background: #1b2633;
  color: var(--text);
}

.sidebar-note {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--muted);
  font-size: 13px;
}

main {
  padding: 28px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.2;
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 18px;
}

.actions,
.panel-head,
.status-pill,
.region-list li,
.components div {
  display: flex;
  align-items: center;
}

.actions {
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.status-pill,
.tag {
  gap: 8px;
  min-height: 32px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #131b24;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.status-pill.muted,
.tag {
  color: var(--muted);
}

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.dot.ok {
  background: var(--green);
}

.dot.warn {
  background: var(--yellow);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 14px;
}

.metric,
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.metric {
  padding: 18px;
}

.metric span,
.metric small {
  display: block;
  color: var(--muted);
}

.metric strong {
  display: block;
  margin: 8px 0 2px;
  font-size: 28px;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
  gap: 14px;
}

.panel {
  padding: 18px;
}

.panel.wide {
  min-width: 0;
}

.panel-head {
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 18px;
}

.panel-head.compact {
  margin-bottom: 14px;
}

.chart {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  align-items: end;
  gap: 10px;
  height: 220px;
  padding: 14px;
  border-radius: 8px;
  background: var(--panel-2);
  border: 1px solid #25303d;
}

.chart span {
  display: block;
  min-height: 24px;
  border-radius: 6px 6px 3px 3px;
  background: linear-gradient(180deg, #4dabf7, #206bc4);
}

.region-list,
.events {
  margin: 0;
  padding: 0;
  list-style: none;
}

.region-list {
  display: grid;
  gap: 10px;
}

.region-list li {
  display: grid;
  grid-template-columns: 9px 1fr auto;
  gap: 10px;
  min-height: 42px;
  padding: 10px;
  border-radius: 6px;
  background: var(--panel-2);
}

.region-list small,
.events time,
.components span {
  color: var(--muted);
}

.events {
  display: grid;
  gap: 12px;
}

.events li {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 10px;
}

.components {
  display: grid;
  gap: 10px;
}

.components div {
  justify-content: space-between;
  gap: 12px;
  min-height: 44px;
  padding: 10px 12px;
  border-radius: 6px;
  background: var(--panel-2);
}

.components strong {
  color: #8ce99a;
}

@media (max-width: 980px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .metrics,
  .grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  main {
    padding: 18px;
  }

  .topbar,
  .actions {
    align-items: flex-start;
    justify-content: flex-start;
  }

  .topbar,
  nav,
  .metrics,
  .grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    display: grid;
  }

  .chart {
    height: 170px;
    gap: 6px;
  }
}