:root {
  --bg: #f7f5f2;
  --fg: #1d1d1f;
  --muted: #6b6b70;
  --card: #ffffff;
  --line: #dcd8d2;
  --accent: #8a3b2e;
  --accent-fg: #ffffff;
  --error: #b00020;
  --warn-bg: #fff4d6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171a;
    --fg: #ececee;
    --muted: #a0a0a8;
    --card: #222226;
    --line: #3a3a40;
    --accent: #d98b6f;
    --accent-fg: #17171a;
    --error: #ff6b7f;
    --warn-bg: #3a3320;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 640px; margin: 0 auto; padding: 32px 16px 64px; }
h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 16px; }
h2 { font-size: 1.3rem; margin: 0 0 12px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  margin: 20px 0;
}
label { display: block; font-weight: 600; margin: 16px 0 6px; }
label:first-child { margin-top: 0; }
input, textarea {
  width: 100%;
  font: inherit;
  color: inherit;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
}
textarea { resize: vertical; }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button, .button {
  display: inline-block;
  margin-top: 18px;
  font: inherit;
  font-weight: 600;
  padding: 12px 22px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  text-decoration: none;
  cursor: pointer;
}
button:disabled { opacity: .6; cursor: wait; }
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.muted { color: var(--muted); font-size: .92rem; }
.error { color: var(--error); font-weight: 600; }
.warn { background: var(--warn-bg); padding: 12px 14px; border-radius: 8px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; letter-spacing: .04em; }
.password { font-size: 1.7rem; font-weight: 700; margin: 4px 0; user-select: all; }
.host { font-size: 1.6rem; font-weight: 700; margin: 0 0 8px; word-break: break-all; }
.break { word-break: break-all; }
#card { width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); }
details { margin-top: 18px; }
summary { cursor: pointer; color: var(--muted); }
ol { padding-left: 1.3em; }