:root {
  --bg: #0d1117;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --danger: #f85149;
  --ok: #3fb950;
  --card: #161b22;
  --border: #30363d;
}
* { box-sizing: border-box; }
body {
  margin: 0; font-family: -apple-system, Segoe UI, Roboto, system-ui, sans-serif;
  background: var(--bg); color: var(--fg); line-height: 1.45; font-size: 14px;
}
header, footer { padding: 12px 20px; }
header { background: var(--card); border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
header .brand { font-weight: 600; font-size: 16px; }
header nav a { color: var(--fg); margin-left: 14px; text-decoration: none; }
header nav a:hover { color: var(--accent); }
header nav .logout { color: var(--muted); }
main { padding: 24px 20px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px 20px; margin-bottom: 20px; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; }
label { display: block; margin: 8px 0 4px; color: var(--muted); font-size: 13px; }
input[type=text], input[type=password], input[type=number], textarea, select {
  width: 100%; padding: 8px 10px;
  background: var(--bg); color: var(--fg); border: 1px solid var(--border); border-radius: 6px;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; min-height: 80px; }
button, .btn {
  background: var(--accent); color: var(--bg); border: none; padding: 8px 14px;
  border-radius: 6px; cursor: pointer; font-weight: 500;
}
button.secondary, .btn.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button:disabled { opacity: 0.5; }
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.row > * { flex: 1 1 320px; }
.flash { background: rgba(63,185,80,0.12); color: var(--ok); border: 1px solid var(--ok); padding: 8px 12px; border-radius: 6px; margin-bottom: 12px; }
.error { background: rgba(248,81,73,0.12); color: var(--danger); border: 1px solid var(--danger); padding: 8px 12px; border-radius: 6px; }
dl { margin: 0; }
dt { color: var(--muted); font-size: 12px; text-transform: uppercase; }
dd { margin: 0 0 12px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.tag { display: inline-block; background: var(--border); color: var(--muted); padding: 2px 8px; border-radius: 12px; font-size: 11px; margin-right: 6px; }
.tag.ok { background: rgba(63,185,80,0.16); color: var(--ok); }
.tag.warn { background: rgba(248,168,73,0.16); color: #f0883e; }
.tag.bad { background: rgba(248,81,73,0.16); color: var(--danger); }
code { background: rgba(88,166,255,0.12); color: var(--accent); padding: 1px 4px; border-radius: 4px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }