:root {
  --fg: #1c1e21;
  --muted: #6a7078;
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #d9dce1;
  --accent: #2f6feb;
  --danger: #b42318;
  --ok: #1f7a3d;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6e8eb;
    --muted: #9aa0a6;
    --bg: #16181c;
    --card: #1f2227;
    --border: #33363c;
    --accent: #6ea8fe;
    --danger: #f27a70;
    --ok: #6cc98a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

.bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.brand { font-weight: 700; text-decoration: none; color: var(--fg); }
.session { display: flex; align-items: center; gap: .75rem; }
.who { color: var(--muted); font-size: .9rem; }

main { max-width: 780px; margin: 2rem auto; padding: 0 1rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
}
.card.narrow { max-width: 420px; margin: 3rem auto; text-align: center; }

h1 { margin-top: 0; font-size: 1.3rem; }
code { background: rgba(127,127,127,.15); padding: .1em .35em; border-radius: 4px; }
.muted { color: var(--muted); font-size: .9rem; }

table.keys { width: 100%; border-collapse: collapse; margin: 1rem 0; }
table.keys th, table.keys td {
  text-align: left;
  padding: .5rem .6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
table.keys th { font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
td.fp { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .82rem; word-break: break-all; }

form.add { display: grid; gap: .9rem; margin-top: 1rem; }
form.add label { display: grid; gap: .3rem; font-size: .9rem; }
textarea, input[type=text] {
  width: 100%;
  font: inherit;
  padding: .5rem .6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; resize: vertical; }

button, .button {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: .5rem .9rem;
  border: 1px solid transparent;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
}
button.link {
  background: none;
  color: var(--accent);
  padding: 0;
  font-weight: 500;
  border: 0;
}
button.danger { background: none; color: var(--danger); border-color: var(--border); padding: .3rem .7rem; }

.error { color: var(--danger); }
.notice { color: var(--ok); }
.empty { color: var(--muted); }
p.error, p.notice { border-left: 3px solid currentColor; padding-left: .6rem; }