:root {
  --bg: #eef4ff;
  --panel: #ffffffcc;
  --line: #dbe5f6;
  --text: #111827;
  --muted: #667085;
  --nav: #1e2a4d;
  --nav2: #23335f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Roboto, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(140deg, #f2f6ff, var(--bg));
}
.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
}
.sidebar {
  margin: 14px;
  padding: 16px;
  border-radius: 14px;
  background: linear-gradient(160deg, var(--nav), var(--nav2));
  color: #fff;
  border: 1px solid #ffffff22;
}
.brand {
  font-size: 28px;
  line-height: 1.1;
  font-weight: 700;
  margin-bottom: 20px;
}
.nav {
  display: grid;
  gap: 6px;
}
.nav a {
  color: #dce7ff;
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 8px;
  font-weight: 500;
}
.nav a.active {
  background: #ffffff2a;
  color: #fff;
}
.env-badge {
  margin-top: 18px;
  font-size: 12px;
  color: #c9dafd;
}
main { padding: 22px; }
.kicker { font-size: 24px; font-style: italic; margin-bottom: 4px; }
h1 { margin: 0; font-size: 34px; }
.topbar p { margin: 8px 0 0; color: var(--muted); }
.metrics {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 12px;
}
.metric-card, .panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
}
.metric-card h2 {
  margin: 0;
  font-size: 13px;
  text-transform: uppercase;
  color: var(--muted);
}
.metric-card .value {
  margin-top: 8px;
  font-size: 34px;
  font-weight: 700;
}
.metric-card .hint { color: var(--muted); font-size: 13px; }
.grid-2 {
  margin: 16px 0;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 16px;
}
h3 { margin: 0 0 10px; font-size: 24px; }
.empty {
  min-height: 120px;
  display: grid;
  place-items: center;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 10px;
  background: #f9fbff;
}
@media (max-width: 1020px) {
  .shell { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, minmax(120px, 1fr)); }
  .grid-2 { grid-template-columns: 1fr; }
}