:root {
  --bg: #f6f7f9; --fg: #15181d; --muted: #5d6573; --card: #ffffff; --line: #dfe3e8;
  --primary: #2f5bd3; --primary-fg: #fff; --danger: #c62828; --danger-fg: #fff;
  --ok-bg: #e6f4ea; --ok-fg: #1e6b35; --err-bg: #fdecea; --err-fg: #9b1c1c;
  --pill-on: #1e8e3e; --pill-off: #8a94a3; --pill-bad: #c62828;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216; --fg: #e8eaee; --muted: #9aa3b2; --card: #171b21; --line: #2a3039;
    --primary: #6d8ff0; --primary-fg: #0f1216; --danger: #ef5350; --danger-fg: #0f1216;
    --ok-bg: #12301d; --ok-fg: #8fd6a4; --err-bg: #3a1514; --err-fg: #f4a6a3;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--primary); }
.bar { display: flex; align-items: center; gap: 12px; padding: 12px 16px;
  border-bottom: 1px solid var(--line); background: var(--card); }
.bar form { margin: 0 0 0 auto; }
.brand { font-weight: 700; color: var(--fg); text-decoration: none; }
main { max-width: 560px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 16px 20px; margin-bottom: 16px; }
.card.narrow { max-width: 420px; margin: 40px auto; }
.card-danger { border-color: var(--danger); }
h1 { font-size: 1.25rem; margin: 0 0 8px; } h2 { font-size: 1.1rem; margin: 0 0 8px; }
.big { font-size: 1.1rem; margin: 4px 0; }
.muted { color: var(--muted); } .small { font-size: .875rem; }
.btn { display: inline-block; min-height: 44px; padding: 10px 18px; border-radius: 10px;
  border: 1px solid var(--line); background: var(--card); color: var(--fg);
  font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; }
.btn-primary { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }
.btn-danger { background: var(--danger); color: var(--danger-fg); border-color: var(--danger); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.link { background: none; border: 0; color: var(--muted); font: inherit; cursor: pointer; }
.pill { font-size: .8rem; font-weight: 600; padding: 3px 10px; border-radius: 999px;
  color: #fff; background: var(--pill-off); }
.pill-connected { background: var(--pill-on); }
.pill-revoked { background: var(--pill-bad); }
.flash { padding: 10px 14px; border-radius: 10px; }
.flash-ok { background: var(--ok-bg); color: var(--ok-fg); }
.flash-error { background: var(--err-bg); color: var(--err-fg); }
label { display: block; margin: 0 0 12px; font-weight: 600; }
input { display: block; width: 100%; margin-top: 4px; padding: 10px; font: inherit;
  border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--fg); }