:root {
  --bg: #fafafa;
  --fg: #1d1d1f;
  --muted: #6e6e73;
  --border: #e0e0e3;
  --panel: #ffffff;
  --accent: #2f6fdf;
  --ok: #1f8a4c;
  --bad: #c0392b;
  --warn-bg: #fff4d6;
  --err-bg: #fde2df;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16171a;
    --fg: #e6e6e9;
    --muted: #9a9aa2;
    --border: #2c2d33;
    --panel: #1e1f23;
    --accent: #6c9dff;
    --ok: #4cc984;
    --bad: #ff7a6b;
    --warn-bg: #3a3218;
    --err-bg: #3d1f1c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header {
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  padding: 12px 16px 0;
}

.titlebar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 16px; margin-bottom: 10px; }
h1 { margin: 0; font-size: 18px; }
h1 .host { color: var(--muted); font-weight: 400; margin-left: 6px; }
h2 { font-size: 15px; margin: 24px 0 8px; }

nav { display: flex; gap: 2px; overflow-x: auto; }
nav a {
  padding: 8px 14px;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
nav a:hover { color: var(--fg); }
nav a.active { color: var(--accent); border-bottom-color: var(--accent); font-weight: 600; }

main { padding: 16px; }
footer { padding: 8px 16px 24px; color: var(--muted); font-size: 12px; }
a { color: var(--accent); }

.scroll { overflow-x: auto; border: 1px solid var(--border); border-radius: 6px; background: var(--panel); }
table { border-collapse: collapse; width: 100%; }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
thead th { position: sticky; top: 0; background: var(--panel); font-weight: 600; white-space: nowrap; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); }

table.kv { width: auto; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; }
table.kv th { color: var(--muted); font-weight: 500; }

.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 13px; }
.sub { color: var(--muted); font-size: 12px; font-weight: 400; }
.empty { color: var(--muted); font-style: italic; }
.note, .filters { color: var(--muted); }

.state { font-weight: 500; }
.state-up, .state-reachable, .state-permanent, .state-listen, .state-estab { color: var(--ok); }
.state-down, .state-failed, .state-incomplete { color: var(--bad); }

.warning, .error { padding: 8px 12px; border-radius: 6px; margin: 0 0 12px; }
.warning { background: var(--warn-bg); }
.error { background: var(--err-bg); }

.nspicker { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; color: var(--muted); min-width: 0; }
.nspicker select { max-width: 60vw; }

select, input, button {
  font: inherit;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 4px 8px;
}
button { background: var(--accent); color: #fff; border-color: var(--accent); cursor: pointer; padding: 5px 14px; }

form.lookup {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px 14px;
  align-items: end;
  margin-bottom: 16px;
}
form.lookup label { display: flex; flex-direction: column; gap: 3px; color: var(--muted); font-size: 12px; }
form.lookup label input { font-size: 14px; }
form.lookup label.check { flex-direction: row; align-items: center; gap: 6px; font-size: 13px; }
form.lookup button { justify-self: start; }

.badge {
  display: inline-block;
  padding: 0 6px;
  border-radius: 9px;
  font-size: 11px;
  background: color-mix(in srgb, var(--accent) 15%, transparent);
  color: var(--accent);
  white-space: nowrap;
}
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }

h3 { font-size: 14px; margin: 16px 0 6px; }
.bad { color: var(--bad); }
tr.nonzero td:nth-child(2), .counter-grid .nonzero span:last-child { color: var(--bad); font-weight: 600; }

details { margin: 6px 0; background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 6px 10px; }
details summary { cursor: pointer; }
details pre { overflow-x: auto; margin: 8px 0 0; font-size: 12px; }

.counter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2px 18px;
  margin-top: 8px;
  font-size: 12px;
}
.counter-grid div { display: flex; justify-content: space-between; gap: 8px; border-bottom: 1px dotted var(--border); }
.counter-grid span:first-child { overflow: hidden; text-overflow: ellipsis; }

.chain { background: var(--panel); border: 1px solid var(--border); border-radius: 6px; margin: 8px 0; padding: 8px 12px; }
.chain-head { margin-bottom: 4px; }
ol.rules { margin: 0; padding-left: 0; list-style: none; font-size: 13px; }
ol.rules li { padding: 2px 0 2px 16px; border-top: 1px solid var(--border); overflow-wrap: anywhere; }
p.rules { margin: 0 0 0 16px; }
.policy-drop { background: color-mix(in srgb, var(--bad) 15%, transparent); color: var(--bad); }
.policy-accept { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }

.tiles { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.tile { background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 8px 14px; min-width: 110px; }
.tile-label { color: var(--muted); font-size: 12px; }
.tile-value { font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; }

.events-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; }
.events-controls button, .filters button { background: var(--panel); color: var(--fg); border-color: var(--border); padding: 3px 10px; }

form.lookup .buttons { display: flex; gap: 8px; justify-self: start; }
button.secondary { background: var(--panel); color: var(--fg); border-color: var(--border); }
button:disabled { opacity: 0.5; cursor: default; }