:root {
  --bg: #081017;
  --panel: #13232f;
  --panel-alt: #0e1a24;
  --text: #e5eef5;
  --muted: #8ca7ba;
  --border: #294355;
  --red: #ef4444;
  --orange: #f97316;
  --yellow: #facc15;
  --green: #22c55e;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, sans-serif;
  background: radial-gradient(circle at top right, #163147, #081017 62%);
  color: var(--text);
}
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 1.5rem 4vw;
  border-bottom: 1px solid var(--border);
}
.eyebrow { margin: 0; color: var(--muted); letter-spacing: 0.1rem; text-transform: uppercase; font-size: 0.75rem; }
h1 { margin: 0.25rem 0 0; font-size: clamp(1.4rem, 3vw, 2rem); }
.actions { display: flex; gap: 0.7rem; flex-wrap: wrap; }
button {
  background: #183448;
  color: var(--text);
  border: 1px solid #30546d;
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  border-radius: 0.5rem;
}
.layout { padding: 1.3rem 4vw 2rem; display: grid; gap: 1rem; grid-template-columns: repeat(12, 1fr); }
.kpi-grid { grid-column: 1 / -1; display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.card, .panel { background: linear-gradient(180deg, var(--panel), var(--panel-alt)); border: 1px solid var(--border); border-radius: 0.8rem; padding: 1rem; }
.card h2 { margin: 0; font-size: 0.9rem; color: var(--muted); }
.card p { margin: 0.4rem 0 0.2rem; font-size: 2rem; font-weight: 700; }
.card small { color: var(--yellow); }
.chart-panel { grid-column: span 6; min-height: 300px; }
.panel:nth-last-child(2), .panel:last-child { grid-column: span 6; }
.panel h3 { margin-top: 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; border-bottom: 1px solid var(--border); padding: 0.5rem 0.2rem; }
.sev-Critical { color: var(--red); font-weight: 700; }
.sev-High { color: var(--orange); font-weight: 700; }
.sev-Medium { color: var(--yellow); font-weight: 700; }
.sev-Low { color: var(--green); font-weight: 700; }

@media (max-width: 980px) {
  .chart-panel, .panel:nth-last-child(2), .panel:last-child { grid-column: 1 / -1; }
}