:root {
  --bg: #ffffff;
  --fg: #09090b;
  --muted: #71717a;
  --border: #e4e4e7;
  --card: #fafafa;
  --primary: #18181b;
  --primary-fg: #fafafa;
  --danger: #dc2626;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  font-size: 14px;
  line-height: 1.5;
}

.nav {
  display: flex;
  gap: 4px;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding: 10px 16px;
}
.nav .brand { font-weight: 600; padding: 6px 10px; }
.nav a {
  padding: 6px 10px;
  border-radius: 6px;
  text-decoration: none;
  color: var(--muted);
  font-weight: 500;
}
.nav a.active, .nav a:hover { background: var(--card); color: var(--fg); }
.nav .spacer { flex: 1; }

.container { max-width: 1040px; margin: 0 auto; padding: 24px 16px; }
.center { max-width: 400px; margin: 72px auto; padding: 0 16px; }

h1 { font-size: 20px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.muted { color: var(--muted); }

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

label { display: block; font-weight: 500; margin-bottom: 6px; font-size: 13px; }
input, textarea, select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font: inherit;
  background: var(--bg);
  color: var(--fg);
}
textarea { min-height: 150px; font-family: ui-monospace, Menlo, monospace; resize: vertical; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--primary); outline-offset: 0; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--primary-fg);
  border-radius: 6px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
}
.btn:hover { opacity: .9; }
.btn.secondary { background: var(--bg); color: var(--fg); border-color: var(--border); }
.btn.danger { background: var(--bg); color: var(--danger); border-color: var(--border); }
.btn.sm { padding: 4px 8px; font-size: 12px; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--muted); font-weight: 500; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 2px 8px; border-radius: 9999px; font-size: 12px; border: 1px solid var(--border); }
.badge.green { color: #16a34a; border-color: #bbf7d0; background: #f0fdf4; }
.badge.red { color: var(--danger); border-color: #fecaca; background: #fef2f2; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; }
.stat .n { font-size: 24px; font-weight: 600; }
.stat .l { color: var(--muted); font-size: 12px; margin-top: 2px; }

.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
form.inline { display: inline; margin: 0; }
.mt { margin-top: 16px; }

code, pre { font-family: ui-monospace, Menlo, monospace; }
.mono { font-family: ui-monospace, Menlo, monospace; font-size: 12px; }
pre.copy {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px;
  overflow: auto;
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0 0 12px;
}

.flash { padding: 10px 12px; border-radius: 6px; margin-bottom: 16px; border: 1px solid var(--border); background: var(--card); }
.flash.err { color: var(--danger); border-color: #fecaca; background: #fef2f2; }
.width-limit { max-width: 90px; }