:root {
  --bg: #0b1220;
  --surface: #111a2e;
  --surface-2: #18233c;
  --border: #25324d;
  --text: #e6ebf5;
  --muted: #8794ad;
  --accent: #4f8cff;
  --accent-strong: #6da5ff;
  --good: #34d399;
  --bad: #f87171;
  --warn: #fbbf24;
  --shadow: 0 1px 2px rgba(0,0,0,.2);
  --radius: 10px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  font-size: 14px;
  line-height: 1.45;
}

a { color: var(--accent-strong); text-decoration: none; }
a:hover { text-decoration: underline; }

.topnav {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.topnav .brand a { color: var(--text); font-weight: 600; font-size: 15px; }
.topnav .nav-links { display: flex; gap: 8px; flex: 1; margin-left: 24px; }
.topnav .nav-links a {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--muted);
}
.topnav .nav-links a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.topnav .nav-links a.active { background: var(--surface-2); color: var(--text); }
.topnav .nav-user { display: flex; align-items: center; gap: 12px; }
.topnav .username { color: var(--muted); font-size: 12px; }
.topnav form.inline { display: inline; margin: 0; padding: 0; }

.container {
  max-width: 1280px;
  margin: 24px auto;
  padding: 0 24px;
}

h1, h2, h3 { color: var(--text); margin-top: 0; }
h1 { font-size: 22px; }
h2 { font-size: 16px; margin: 24px 0 12px; }
h3 { font-size: 14px; margin: 20px 0 8px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
}

.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 800px) {
  .grid.cols-3, .grid.cols-4, .grid.cols-2 { grid-template-columns: 1fr; }
}

.kpi {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.kpi-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.kpi-value { font-size: 28px; font-weight: 600; margin-top: 6px; }
.kpi-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
th {
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: .04em;
  background: var(--surface-2);
}
tr:hover td { background: rgba(255,255,255,0.02); }
td.mono, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.badge.good { background: rgba(52,211,153,.15); color: var(--good); }
.badge.bad { background: rgba(248,113,113,.15); color: var(--bad); }
.badge.warn { background: rgba(251,191,36,.15); color: var(--warn); }
.badge.muted { background: var(--surface-2); color: var(--muted); }

form { display: grid; gap: 12px; }
form label { display: grid; gap: 4px; color: var(--muted); font-size: 12px; }
form input, form select, form textarea {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
}
form input:focus, form select:focus, form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
form .row { display: flex; gap: 12px; flex-wrap: wrap; }
form .row > * { flex: 1 1 200px; }

button, .button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}
button:hover, .button:hover { background: var(--accent-strong); }
button.link, .button.link {
  background: transparent;
  color: var(--muted);
  padding: 4px 8px;
  font-weight: normal;
  font-size: 13px;
}
button.link:hover { color: var(--text); background: var(--surface-2); }
button.danger { background: var(--bad); }
button.secondary { background: var(--surface-2); color: var(--text); border: 1px solid var(--border); }

.error-banner {
  background: rgba(248,113,113,.1);
  border: 1px solid rgba(248,113,113,.4);
  color: #fecaca;
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 12px;
}
.success-banner {
  background: rgba(52,211,153,.1);
  border: 1px solid rgba(52,211,153,.4);
  color: #a7f3d0;
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 12px;
}

.login-card {
  max-width: 380px;
  margin: 80px auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}
.login-card h1 { font-size: 20px; margin-bottom: 4px; }
.login-card .subtitle { color: var(--muted); margin-top: 0; margin-bottom: 24px; }

.toolbar {
  display: flex;
  gap: 12px;
  align-items: end;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.toolbar form { flex: 1; }
.toolbar form .row { align-items: end; }

.muted { color: var(--muted); }
.right { text-align: right; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.truncate {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-block;
}

pre.json {
  background: #0a1426;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  overflow-x: auto;
  font-size: 11px;
  white-space: pre-wrap;
  word-break: break-all;
}

.qr-box {
  background: white;
  padding: 12px;
  border-radius: 6px;
  display: inline-block;
}
.qr-box img { display: block; max-width: 220px; height: auto; }

.copy-row {
  display: flex;
  gap: 8px;
  align-items: center;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
}
.copy-row code { flex: 1; font-size: 12px; word-break: break-all; }

.pool-bar {
  height: 8px;
  background: var(--surface-2);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 6px;
}
.pool-bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width .3s ease;
}
.pool-bar-fill.warn { background: var(--warn); }
.pool-bar-fill.bad { background: var(--bad); }

.chart-wrap {
  position: relative;
  height: 260px;
  width: 100%;
}