:root {
  --bg: #f6f7f9; --card: #fff; --text: #1b1f24; --muted: #6b7280; --border: #e3e6ea;
  --accent: #2563eb; --accent-text: #fff; --danger: #c02626; --ok-bg: #e7f6ec; --ok: #17663a;
  --err-bg: #fdecec; --green: #22a55a; --grey: #b8bec7;
  --series-down: #2a78d6; --series-up: #eb6834;
  --chart-grid: #eceef1; --chart-axis: #c9ced5; --chart-hover: rgba(0, 0, 0, .04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418; --card: #1a1e24; --text: #e6e9ed; --muted: #8b939e; --border: #2b313a;
    --accent: #3b82f6; --danger: #ef5b5b; --ok-bg: #16301f; --ok: #7bd99c; --err-bg: #3a1c1c;
    --grey: #4b525c;
    --series-down: #3987e5; --series-up: #d95926;
    --chart-grid: #262b32; --chart-axis: #3a414b; --chart-hover: rgba(255, 255, 255, .05);
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header { display: flex; justify-content: space-between; align-items: center;
  max-width: 820px; margin: 0 auto; padding: 14px 16px; }
header form { margin: 0; }
.brand { font-weight: 700; font-size: 18px; color: var(--text); text-decoration: none; }
main { max-width: 820px; margin: 0 auto; padding: 0 16px 40px; }
a { color: var(--accent); }
h1 { font-size: 20px; margin: 0 0 12px; display: flex; align-items: center; gap: 10px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 18px; margin-bottom: 14px; }
.narrow { max-width: 360px; margin: 40px auto; }
.stack { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
input { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 9px 11px; min-width: 0; }
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
button, .button { font: inherit; border: 1px solid var(--border); background: var(--card);
  color: var(--text); border-radius: 8px; padding: 9px 14px; cursor: pointer;
  text-decoration: none; display: inline-block; white-space: nowrap; }
button:hover, .button:hover { border-color: var(--muted); }
.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.primary:hover { filter: brightness(1.08); border-color: var(--accent); }
.danger { color: var(--danger); }
.danger:hover { border-color: var(--danger); }
button.link { border: 0; background: none; color: var(--muted); padding: 4px; }
.flash { border-radius: 8px; padding: 10px 12px; margin-bottom: 12px; background: var(--err-bg); }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; }
code { background: var(--bg); padding: 2px 6px; border-radius: 4px; }

.summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 14px; }
.summary div { background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px; display: flex; flex-direction: column; }
.summary b { font-size: 18px; }
.summary span { font-size: 12px; color: var(--muted); }

.create, .inline { display: flex; gap: 8px; margin-bottom: 14px; }
.create input, .inline input { flex: 1; }
.inline { margin: 0; }

.list { background: var(--card); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.row { display: grid; grid-template-columns: 14px 1fr 76px 96px 96px 190px; gap: 10px; align-items: center;
  padding: 12px 16px; color: var(--text); text-decoration: none; border-top: 1px solid var(--border); }
.row:first-child { border-top: 0; }
.row:hover { background: var(--bg); }
.row.off { opacity: .6; }
.name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ip, .seen, .traffic { font-size: 13px; color: var(--muted); }
.traffic { text-align: right; white-space: nowrap; }
.spark { display: block; width: 96px; height: 22px; }
.spark svg { display: block; }
.spark-bar { fill: var(--muted); opacity: .7; }
.spark:not([data-v]) { visibility: hidden; }
.tag { font-weight: 400; font-size: 11px; color: var(--muted); border: 1px solid var(--border);
  border-radius: 6px; padding: 1px 6px; margin-left: 4px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); flex: none; display: inline-block; }
.dot.green { background: var(--green); }
.dot.grey { background: var(--grey); }

dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
dt { color: var(--muted); }
dd { margin: 0; }
.qr { display: flex; justify-content: center; }
.qr svg { width: 100%; max-width: 320px; height: auto; background: #fff; border-radius: 8px; }
.actions { display: flex; gap: 8px; }
.actions form { margin: 0; }

.ranges { display: flex; gap: 4px; margin-bottom: 14px; }
.ranges a { padding: 6px 12px; border-radius: 8px; color: var(--muted); text-decoration: none; font-size: 14px; }
.ranges a:hover { background: var(--card); }
.ranges a.active { background: var(--card); color: var(--text); font-weight: 600; box-shadow: inset 0 0 0 1px var(--border); }

nav.top { display: flex; align-items: center; gap: 14px; font-size: 14px; }
nav.top a { color: var(--muted); text-decoration: none; }
nav.top a:hover { color: var(--text); }
.vias { flex-wrap: wrap; justify-content: center; }
.vias .more { margin-left: auto; font-size: 13px; }
.tag.via { color: var(--accent); border-color: var(--accent); }
.row.entry { grid-template-columns: 14px minmax(0, 1fr) auto auto auto; }
.row.entry .ip { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row.entry form { margin: 0; }
.row.entry button { padding: 5px 10px; font-size: 13px; }
.entry-clients { padding: 0 16px 10px 40px; }
.add-entry { margin-top: 14px; }
.entry-note { padding: 0 16px 12px 40px; display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; }
.entry-note.warn { color: var(--danger); }
.entry-note .good { color: var(--ok); }
.entry-note .bad { color: var(--danger); }
.inline-btn { margin: 0; }
.inline-btn button { padding: 5px 10px; font-size: 13px; }
.exit-other { width: 100%; }
.exit-other summary { cursor: pointer; }
.exit-other form { margin-top: 8px; max-width: 420px; }

.chart-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
h2 { font-size: 15px; margin: 0; }
.legend { display: flex; gap: 14px; font-size: 13px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.sw { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }
.sw.down, .key.down { background: var(--series-down); }
.sw.up, .key.up { background: var(--series-up); }
.chart { position: relative; height: 200px; }
.chart svg { display: block; overflow: visible; }
.chart .tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart rect[tabindex]:focus { outline: none; }
.chart-tip { position: absolute; pointer-events: none; background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font-size: 13px; box-shadow: 0 4px 16px rgba(0, 0, 0, .12); white-space: nowrap; }
.tip-head { color: var(--muted); font-size: 12px; margin-bottom: 4px; }
.tip-row { display: flex; align-items: center; gap: 6px; }
.tip-row b { font-variant-numeric: tabular-nums; }
.tip-row span { color: var(--muted); }
.key { width: 12px; height: 2px; border-radius: 1px; display: inline-block; }
.empty { margin: 8px 0 0; }
.card > p:first-child { margin-top: 0; }
.card > p:last-child { margin-bottom: 0; }
.chart-table { margin-top: 10px; font-size: 13px; }
.chart-table summary { cursor: pointer; color: var(--muted); }
.chart-table table { width: 100%; border-collapse: collapse; margin-top: 8px; font-variant-numeric: tabular-nums; }
.chart-table th, .chart-table td { text-align: right; padding: 4px 8px; border-bottom: 1px solid var(--border); }
.chart-table th:first-child, .chart-table td:first-child { text-align: left; }
.chart-table th { color: var(--muted); font-weight: 500; }

@media (max-width: 640px) {
  .summary { grid-template-columns: repeat(2, 1fr); }
  .row { grid-template-columns: 14px 1fr auto; grid-template-areas: "d n s" "d i t" "d k k"; row-gap: 2px; }
  .row .spark { grid-area: k; margin-top: 4px; }
  .row .spark:not([data-v]) { display: none; }
  .row .dot { grid-area: d; }
  .row .name { grid-area: n; }
  .row .seen { grid-area: s; text-align: right; }
  .row .ip { grid-area: i; }
  .row .traffic { grid-area: t; }
  .row.entry { grid-template-columns: 14px minmax(0, 1fr) auto; grid-template-areas: "d n t" "d i i" "d s s"; }
  .row.entry .seen { text-align: left; }
  .entry-clients { padding-left: 40px; }
}