:root {
  --bg: #faf9f7;
  --fg: #1f2421;
  --muted: #6b766e;
  --card: #ffffff;
  --line: #e3e4df;
  --green: #2f5d50;
  --green-soft: #e8efec;
  --warn: #b8722c;
  --error: #a83b32;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161a18; --fg: #e8ebe7; --muted: #9aa39c; --card: #1e2320;
    --line: #2c332e; --green: #7fb8a4; --green-soft: #22302b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; padding: 16px; background: var(--bg); color: var(--fg);
  font: 15px/1.6 -apple-system, "PingFang SC", "Noto Sans CJK SC", sans-serif;
  -webkit-text-size-adjust: 100%;
}
h1 { font-size: 19px; margin: 0; font-weight: 600; }
h2 { font-size: 15px; margin: 0 0 10px; color: var(--muted); font-weight: 600; }
header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.head-actions { display: flex; align-items: center; gap: 8px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; margin-bottom: 14px;
}
.login-card { max-width: 360px; margin: 15vh auto; background: var(--card); padding: 22px; border-radius: var(--radius); border: 1px solid var(--line); }
input {
  width: 100%; padding: 9px 11px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--fg); font-size: 15px; margin-bottom: 8px;
}
button {
  padding: 9px 14px; border-radius: 8px; border: 1px solid var(--line);
  background: var(--card); color: var(--fg); font-size: 15px; cursor: pointer;
}
button.primary { background: var(--green); color: #fff; border-color: var(--green); }
button:active { opacity: .8; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.error { color: var(--error); }
.hint { font-size: 13px; color: var(--muted); margin: 6px 0 0; }
.badge {
  display: inline-block; padding: 4px 9px; border-radius: 999px;
  background: var(--green-soft); color: var(--green); font-size: 13px;
}
.list { display: flex; flex-direction: column; gap: 8px; }
.row {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 9px 11px; border: 1px solid var(--line); border-radius: 9px;
}
.form-row { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
details summary { cursor: pointer; color: var(--green); font-size: 14px; }
.state-off { color: var(--muted); }
.state-on { color: var(--green); }
.modal { position: fixed; inset: 0; z-index: 10; background: rgb(0 0 0 / .45); display: grid; place-items: center; padding: 16px; }
.modal[hidden] { display: none; }
.modal-panel { position: relative; background: var(--card); color: var(--fg); width: min(100%, 390px); padding: 22px; border-radius: var(--radius); text-align: center; }
.icon-close { position: absolute; right: 10px; top: 8px; border: 0; font-size: 24px; padding: 2px 9px; background: transparent; }
.qr-wrap { margin: 14px auto; padding: 10px; width: fit-content; border: 1px solid var(--line); border-radius: 8px; background: #fff; }
input[type="checkbox"] { width: auto; min-height: 24px; margin: 0 8px; vertical-align: middle; }
#member-details { min-width: 0; }
#member-details pre { max-width: 100%; font: inherit; }
@media (max-width: 600px) {
  .row { flex-wrap: wrap; }
  .row > div { min-width: 0; }
  .row button { margin: 3px 3px 0 0; }
}
.qr-wrap img { display: block; width: 240px; height: 240px; object-fit: contain; }