:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1d2330;
  --muted: #6b7280;
  --line: #e3e6eb;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --ok: #17803d;
  --danger: #b42318;
  --alert-bg: #fdecea;
  --flash-bg: #e8f1fd;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --card: #1d2128;
    --text: #e7e9ee;
    --muted: #9aa1ad;
    --line: #2d333d;
    --accent: #5b9bf0;
    --accent-text: #0b1220;
    --ok: #4cc77a;
    --danger: #f2756a;
    --alert-bg: #3a1f1d;
    --flash-bg: #1c2a3f;
  }
}
* { 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 { margin: 0 auto; padding: 32px 16px; }
main.narrow { max-width: 460px; }
main.wide { max-width: 1100px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 28px;
}
h1 { font-size: 1.45rem; margin: 0 0 12px; line-height: 1.3; }
h2 { font-size: 1.15rem; margin: 28px 0 10px; }
h1.ok { color: var(--ok); }
p { margin: 0 0 14px; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.nowrap { white-space: nowrap; }
label { display: block; font-weight: 600; margin: 12px 0 6px; }
input {
  width: 100%;
  padding: 11px 12px;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
input.pin { font-size: 1.6rem; letter-spacing: 0.3em; text-align: center; }
button {
  display: block;
  width: 100%;
  margin-top: 14px;
  padding: 12px 16px;
  font: inherit;
  font-weight: 600;
  color: var(--accent-text);
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--line); }
button.danger { background: var(--danger); color: #fff; }
button.link { background: none; color: var(--accent); padding: 0; width: auto; font-weight: 400; text-decoration: underline; }
button.small { padding: 6px 10px; font-size: 0.85rem; margin: 0; width: auto; }
form.inline { display: inline; }
form.inline button.link { display: inline; margin: 0; }
form.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
form.row input { flex: 1 1 180px; width: auto; }
form.row button { width: auto; margin: 0; }
form.stack { max-width: 420px; }
.address {
  font: 600 1.35rem/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  padding: 12px;
  background: var(--bg);
  border-radius: 8px;
  text-align: center;
  user-select: all;
}
.alert { background: var(--alert-bg); color: var(--danger); padding: 10px 12px; border-radius: 8px; }
.flash { background: var(--flash-bg); padding: 10px 12px; border-radius: 8px; }
nav { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
nav .spacer { flex: 1; }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; display: block; overflow-x: auto; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 0.85rem; color: var(--muted); font-weight: 600; }
td.actions { white-space: nowrap; }
td.actions form + form { margin-left: 6px; }
tr.r-fail td, tr.r-denied td, tr.r-error td { color: var(--danger); }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }