:root {
  --bg: #f4f6f8; --card: #ffffff; --text: #18212b; --muted: #66727f; --line: #e2e7ec;
  --accent: #1f6feb; --accent-text: #ffffff; --ok: #1a7f37; --warn: #b35900; --bad: #c62828;
  --chip: #eef2f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419; --card: #182029; --text: #e6edf3; --muted: #93a1ae; --line: #2a3541;
    --accent: #4c8dff; --accent-text: #0b1016; --ok: #3fb950; --warn: #e3a03b; --bad: #f47067;
    --chip: #222c37;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 system-ui, "Segoe UI", "Noto Sans Hebrew", Arial, sans-serif;
}
h1 { margin: 0; font-size: 20px; }
.muted { color: var(--muted); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; margin: 0 16px 16px; overflow-x: auto; }
.narrow { max-width: 360px; margin: 12vh auto; display: grid; gap: 12px; }
.login { padding: 16px; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
input, select {
  font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px; min-width: 0;
}
button {
  font: inherit; border: 0; border-radius: 8px; padding: 8px 14px; cursor: pointer;
  background: var(--accent); color: var(--accent-text);
}
button.ghost { background: transparent; color: var(--text); border: 1px solid var(--line); }
button.danger { background: transparent; color: var(--bad); border: 1px solid var(--line); }
.error { color: var(--bad); min-height: 1.5em; margin: 0; }
.top { display: flex; align-items: center; gap: 16px; padding: 16px; flex-wrap: wrap; }
.top nav { display: flex; gap: 6px; flex: 1; flex-wrap: wrap; }
.tab { background: transparent; color: var(--muted); }
.tab.active { background: var(--chip); color: var(--text); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 0 16px 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; }
.stat b { display: block; font-size: 24px; font-variant-numeric: tabular-nums; }
.stat span { color: var(--muted); font-size: 13px; }
table { width: 100%; border-collapse: collapse; }
th { text-align: start; font-weight: 500; color: var(--muted); font-size: 13px; padding: 6px 8px; border-bottom: 1px solid var(--line); }
td { padding: 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
td small { display: block; color: var(--muted); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-inline-end: 6px; background: var(--muted); }
.dot.on { background: var(--ok); }
.dot.off { background: var(--bad); }
.row { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.row label { flex: 1 1 140px; }
.new-code { text-align: center; }
.code { font: 600 28px/1.2 ui-monospace, Consolas, monospace; letter-spacing: 2px; direction: ltr; margin: 8px 0 12px; }
.empty { color: var(--muted); text-align: center; margin: 24px 0; }
.ltr { direction: ltr; unicode-bidi: embed; }
.actions { display: flex; gap: 6px; justify-content: end; flex-wrap: wrap; }