:root {
  --bg: #0f1420;
  --panel: #161d2e;
  --border: #263150;
  --text: #e6e9f0;
  --muted: #8893a7;
  --accent: #5b8cff;
  --healthy: #22c55e;
  --warning: #eab308;
  --critical: #ef4444;
  --unknown: #64748b;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 14px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.brand { font-weight: 700; margin-right: auto; }

.topbar nav a {
  color: var(--muted);
  text-decoration: none;
  margin-right: 16px;
  font-size: 14px;
}

.topbar nav a:hover { color: var(--text); }

.logout-form { display: flex; align-items: center; gap: 10px; margin-left: auto; }

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

button, .btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

button:disabled { background: var(--unknown); cursor: not-allowed; }

main { max-width: 1100px; margin: 0 auto; padding: 24px 16px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
}

.card h3 { margin: 0 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--muted); }

.card .value { font-size: 20px; font-weight: 700; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.badge.healthy, .badge.valid { background: rgba(34,197,94,.15); color: var(--healthy); }
.badge.warning, .badge.expiring { background: rgba(234,179,8,.15); color: var(--warning); }
.badge.critical, .badge.expired, .badge.mismatch, .badge.selfsigned { background: rgba(239,68,68,.15); color: var(--critical); }
.badge.unknown, .badge.missing { background: rgba(100,116,139,.15); color: var(--unknown); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; }

.auth-wrapper { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.auth-box { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; padding: 32px; width: 100%; max-width: 380px; }
.auth-box h1 { font-size: 18px; margin-top: 0; }
.auth-box label { display: block; font-size: 13px; margin: 14px 0 6px; color: var(--muted); }
.auth-box input { width: 100%; padding: 10px 12px; border-radius: 8px; border: 1px solid var(--border); background: #0c1120; color: var(--text); }
.auth-box button { width: 100%; margin-top: 18px; padding: 10px; }
.error { background: rgba(239,68,68,.12); color: var(--critical); padding: 10px 12px; border-radius: 8px; font-size: 13px; margin-bottom: 8px; }
.muted { color: var(--muted); font-size: 13px; }

@media (max-width: 600px) {
  .topbar { gap: 10px; }
  .topbar nav a { margin-right: 10px; font-size: 13px; }
}