:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1b1f24;
  --muted: #5f6b7a;
  --line: #e2e6ec;
  --accent: #2f6fde;
  --accent-text: #ffffff;
  --ok: #1f8a4c;
  --warn: #b26a00;
  --bad: #c62f2f;
  --chip: #eef1f5;
  --code: #f0f2f5;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1a1e24;
    --text: #e6e9ee;
    --muted: #96a0ad;
    --line: #2b313a;
    --accent: #5b8ff0;
    --accent-text: #0b1220;
    --ok: #4cc27f;
    --warn: #e0a23a;
    --bad: #f06b6b;
    --chip: #252b33;
    --code: #232931;
  }
}
* { 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;
}
.top {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 14px;
  padding: 14px 16px; border-bottom: 1px solid var(--line); background: var(--card);
}
.top h1 { margin: 0; font-size: 19px; }
.top .sub { color: var(--muted); font-size: 13px; }
.top nav { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: 14px 16px; margin-bottom: 16px; overflow-x: auto;
}
.card.narrow { max-width: 380px; margin: 40px auto; }
.head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
h2 { margin: 0 0 8px; font-size: 16px; }
label { display: block; margin-bottom: 10px; color: var(--muted); font-size: 13px; }
input, select {
  display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit;
  color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 7px;
}
select { display: inline-block; width: auto; margin: 0; padding: 5px 8px; }
button, .btn {
  display: inline-block; padding: 7px 12px; font: inherit; font-size: 14px; text-decoration: none;
  color: var(--accent-text); background: var(--accent); border: 1px solid var(--accent); border-radius: 7px; cursor: pointer;
}
button.ghost, .btn.ghost { color: var(--accent); background: transparent; }
button.danger { color: var(--bad); background: transparent; border-color: var(--bad); }
button.small { padding: 3px 8px; font-size: 13px; }
button:disabled { opacity: .5; cursor: default; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-top: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; border-top: 0; }
td .actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; word-break: break-all; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.chip { display: inline-block; padding: 1px 8px; border-radius: 99px; background: var(--chip); font-size: 12px; white-space: nowrap; }
.chip.ok { color: var(--ok); }
.chip.warn { color: var(--warn); }
.chip.bad { color: var(--bad); }
.error { color: var(--bad); }
.flash { padding: 10px 12px; border-radius: 8px; background: var(--card); border: 1px solid var(--line); }
.flash.bad { border-color: var(--bad); color: var(--bad); }
.pairing, .secret { background: var(--code); border-radius: 8px; padding: 12px; margin: 8px 0 12px; }
.pairing .code { font: 600 26px/1.2 ui-monospace, Menlo, monospace; letter-spacing: .06em; margin: 4px 0; }
.empty { color: var(--muted); font-size: 14px; padding: 6px 0; }
details summary { cursor: pointer; color: var(--accent); font-size: 13px; }
@media (max-width: 640px) {
  th.opt, td.opt { display: none; }
}