:root {
  --bg: #f4f6f5;
  --card: #ffffff;
  --text: #1c2420;
  --muted: #5d6a63;
  --accent: #2f6f4e;
  --accent-text: #ffffff;
  --border: #d9e0dc;
  --bad: #b3261e;
  --good: #2f6f4e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121614;
    --card: #1c221f;
    --text: #e6ece8;
    --muted: #9aa8a0;
    --accent: #5fb98a;
    --accent-text: #0d1a13;
    --border: #2e3833;
    --bad: #f2867e;
    --good: #5fb98a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 560px; margin: 0 auto; padding: 16px; }
main.narrow { max-width: 380px; padding-top: 15vh; }
h1 { font-size: 1.4rem; margin: 0 0 16px; }
h2 { font-size: 1.05rem; margin: 0 0 12px; }
.top { display: flex; justify-content: space-between; align-items: baseline; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}
label { display: block; font-size: .9rem; color: var(--muted); margin-bottom: 4px; }
input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
  margin-bottom: 12px;
}
button {
  font: inherit;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
  margin: 4px 8px 4px 0;
}
button.secondary { background: transparent; color: var(--accent); }
button.link { background: none; border: none; color: var(--muted); padding: 0; text-decoration: underline; }
button:disabled { opacity: .5; cursor: default; }
.row { display: flex; flex-wrap: wrap; }
.muted { color: var(--muted); font-size: .9rem; }
.error, .bad { color: var(--bad); }
.good { color: var(--good); }
table { width: 100%; border-collapse: collapse; margin-bottom: 8px; }
td { padding: 4px 0; border-bottom: 1px solid var(--border); }
td.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.devices { list-style: none; padding: 0; margin: 0; }
.devices li { padding: 6px 0; border-bottom: 1px solid var(--border); }
.devices li:last-child { border-bottom: none; }