:root {
  --bg: #f4f5f7; --card: #ffffff; --fg: #15171a; --muted: #6b7280; --line: #e3e5e9;
  --accent: #2b59ff; --accent-fg: #fff; --red: #c62828; --ok: #1b7f3b;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1115; --card: #171a21; --fg: #e8eaee; --muted: #9aa1ad; --line: #262b35; --accent: #5b7cff; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; min-height: 100dvh; display: grid; place-items: center; padding: 16px;
  background: var(--bg); color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
.card { width: 100%; max-width: 380px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 28px; }
header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.mark { width: 28px; height: 28px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), #8a5bff); }
h1 { font-size: 20px; font-weight: 600; margin: 0; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 14px; }
input {
  display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font: inherit; color: var(--fg);
  background: transparent; border: 1px solid var(--line); border-radius: 8px;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
button {
  width: 100%; padding: 10px 14px; font: inherit; font-weight: 600; border-radius: 8px; cursor: pointer;
  background: var(--accent); color: var(--accent-fg); border: 1px solid transparent; margin-top: 6px;
}
button.ghost { background: transparent; color: var(--fg); border-color: var(--line); }
button.red { background: var(--red); }
button[disabled] { opacity: .6; cursor: wait; }
.hint, .switch { font-size: 13px; color: var(--muted); margin: 6px 0 0; }
.switch { text-align: center; margin-top: 16px; }
a { color: var(--accent); }
dl { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; margin: 0 0 16px; font-size: 14px; }
dt { color: var(--muted); } dd { margin: 0; word-break: break-all; }
.actions { display: grid; gap: 6px; }
details.danger { margin-top: 22px; border-top: 1px solid var(--line); padding-top: 14px; font-size: 14px; }
summary { cursor: pointer; color: var(--red); font-weight: 600; }
#msg { min-height: 1.5em; margin: 14px 0 0; font-size: 14px; color: var(--muted); text-align: center; }
#msg.err { color: var(--red); } #msg.ok { color: var(--ok); }
#qr { display: block; margin: 10px auto; border-radius: 8px; background: #fff; }
code { display: block; text-align: center; font-size: 13px; word-break: break-all; color: var(--muted); margin-bottom: 14px; }
.badge { font-size: 11px; font-weight: 600; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px; }
.reco { margin-top: 14px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: color-mix(in srgb, var(--accent) 7%, transparent); }
.reco code { display: block; font-size: 15px; letter-spacing: .5px; color: var(--fg); margin: 8px 0; text-align: center; }
textarea { width: 100%; min-height: 84px; resize: vertical; font: inherit; color: var(--fg); background: transparent; border: 1px solid var(--line); border-radius: 8px; padding: 10px; margin-top: 4px; }
textarea:focus { outline: 2px solid var(--accent); border-color: transparent; }
.row { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.brand { display: flex; align-items: center; gap: 12px; }
.mt { margin-top: 10px; }
[hidden] { display: none !important; }