:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4f;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3b82f6;
  --ok: #22c55e;
  --warn: #eab308;
  --err: #ef4444;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 1.1rem; }
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.25rem;
}
.nav-links a.active, .nav-links a:hover { color: var(--text); }
.nav-links .logout { color: var(--err); }

.container { max-width: 1280px; margin: 0 auto; padding: 1.5rem; }
h1 { margin: 0 0 0.25rem; font-size: 1.75rem; }
.subtitle { color: var(--muted); margin: 0 0 1.5rem; }

.grid { display: grid; gap: 1rem; margin-bottom: 1rem; }
.stats-grid { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.two-col { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
}
.card h2 { margin: 0 0 0.75rem; font-size: 1rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.05em; }

.stat-value { font-size: 2rem; font-weight: 700; color: var(--accent); }
.stat-label { color: var(--muted); font-size: 0.85rem; }
.stat-sub { font-size: 0.8rem; color: var(--muted); margin-top: 0.25rem; }

.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.data-table th, .data-table td { padding: 0.5rem 0.75rem; text-align: left; border-bottom: 1px solid var(--border); }
.data-table.compact td { padding: 0.35rem 0.5rem; }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, monospace; font-size: 0.85em; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-ok { background: rgba(34, 197, 94, 0.2); color: var(--ok); }
.badge-warn { background: rgba(234, 179, 8, 0.2); color: var(--warn); }
.badge-err { background: rgba(239, 68, 68, 0.2); color: var(--err); }
.badge-level { background: rgba(59, 130, 246, 0.2); color: var(--accent); }

.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-card {
  width: 100%;
  max-width: 380px;
  padding: 2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}
.login-card h1 { text-align: center; }
.login-card label { display: block; margin-top: 1rem; color: var(--muted); font-size: 0.85rem; }
.login-card input {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.6rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
}
.login-card button {
  width: 100%;
  margin-top: 1.5rem;
  padding: 0.75rem;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}
.alert { padding: 0.75rem; border-radius: 6px; margin-bottom: 1rem; }
.alert-error { background: rgba(239, 68, 68, 0.15); color: var(--err); }

.log-viewer { max-height: 70vh; overflow: auto; }
.log-table { font-size: 0.82rem; }
.log-pre {
  background: var(--bg);
  padding: 1rem;
  border-radius: 6px;
  overflow: auto;
  max-height: 300px;
  font-size: 0.8rem;
}
.filter-bar { margin-bottom: 1rem; }
.ctrl-form { margin-bottom: 0.5rem; }
.ctrl-form button, .filter-bar button {
  padding: 0.4rem 0.75rem;
  background: var(--accent);
  border: none;
  border-radius: 4px;
  color: #fff;
  cursor: pointer;
}
.btn-warn { background: var(--warn) !important; color: #000 !important; }
.btn-link { color: var(--accent); margin-left: 1rem; }
.filter-bar input { padding: 0.35rem 0.5rem; background: var(--bg); border: 1px solid var(--border); color: var(--text); border-radius: 4px; margin-right: 0.5rem; }

.filter-bar select {
  margin-left: 0.5rem;
  padding: 0.35rem 0.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 4px;
}