:root {
  --bg: #0a0e17;
  --surface: #111827;
  --surface2: #1a2332;
  --border: #1e2d3d;
  --text: #e2e8f0;
  --text-dim: #8892a4;
  --accent: #3b82f6;
  --green: #22c55e;
  --yellow: #eab308;
  --red: #ef4444;
  --orange: #f97316;
  --radius: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

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

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--accent);
}

.header-right { display: flex; align-items: center; gap: 12px; }

.status-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}
.status-badge.ok { background: rgba(34,197,94,0.15); color: var(--green); }
.status-badge.error { background: rgba(239,68,68,0.15); color: var(--red); }

.agent-badge {
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  background: rgba(59,130,246,0.15);
  color: var(--accent);
}

.btn-danger {
  padding: 6px 14px;
  border: 1px solid var(--red);
  background: transparent;
  color: var(--red);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  transition: all 0.2s;
}
.btn-danger:hover { background: var(--red); color: white; }

nav {
  display: flex;
  gap: 2px;
  padding: 8px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
}

.nav-btn {
  padding: 8px 16px;
  border: none;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  white-space: nowrap;
  transition: all 0.2s;
}
.nav-btn:hover { background: var(--surface2); color: var(--text); }
.nav-btn.active { background: var(--accent); color: white; }

main { padding: 24px; max-width: 1400px; margin: 0 auto; }

.panel { display: none; }
.panel.active { display: block; }

h2 { font-size: 20px; margin-bottom: 16px; font-weight: 600; }
h3 { font-size: 14px; margin-bottom: 12px; color: var(--text-dim); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.sub-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}

.agent-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.agent-card .agent-name { font-weight: 600; font-size: 13px; margin-bottom: 6px; }
.agent-card .agent-status { font-size: 12px; display: flex; align-items: center; gap: 6px; }
.agent-card .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot.running { background: var(--green); }
.dot.degraded { background: var(--yellow); }
.dot.stopped { background: var(--red); }
.dot.error { background: var(--red); }
.dot.idle { background: var(--text-dim); }
.agent-card .agent-meta { font-size: 11px; color: var(--text-dim); margin-top: 6px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; padding: 8px 10px; color: var(--text-dim); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border); }
td { padding: 8px 10px; border-bottom: 1px solid var(--border); }
tr:hover td { background: var(--surface2); }

.severity-low { color: var(--text-dim); }
.severity-medium { color: var(--yellow); }
.severity-high { color: var(--orange); }
.severity-critical { color: var(--red); font-weight: 600; }

.segment-card {
  display: inline-block;
  background: var(--surface2);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin: 4px;
  min-width: 140px;
}
.segment-card .seg-name { font-size: 12px; color: var(--text-dim); text-transform: uppercase; }
.segment-card .seg-count { font-size: 22px; font-weight: 700; }
.segment-card .seg-revenue { font-size: 12px; color: var(--green); }

.balance-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
}
.balance-item .amount { font-weight: 700; color: var(--green); }

.alert-item {
  padding: 10px;
  margin-bottom: 6px;
  border-radius: var(--radius);
  font-size: 13px;
  border-left: 3px solid;
}
.alert-item.high, .alert-item.critical { border-color: var(--red); background: rgba(239,68,68,0.05); }
.alert-item.medium { border-color: var(--yellow); background: rgba(234,179,8,0.05); }
.alert-item.low { border-color: var(--text-dim); background: rgba(136,146,164,0.05); }

footer {
  display: flex;
  justify-content: space-between;
  padding: 12px 24px;
  font-size: 11px;
  color: var(--text-dim);
  border-top: 1px solid var(--border);
  margin-top: 40px;
}

@media (max-width: 768px) {
  .sub-grid { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
}