:root {
  color-scheme: light dark;
  --bg: #ffffff;
  --fg: #14161a;
  --muted: #5d6470;
  --accent: #1f6feb;
  --error: #b3261e;
  --border: #d5d9e0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14161a;
    --fg: #e8eaed;
    --muted: #9aa2ae;
    --accent: #4c8dff;
    --error: #ff7b72;
    --border: #2c313a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 2rem 1rem;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main { max-width: 26rem; margin: 0 auto; }

h1 { font-size: 1.5rem; margin: 0 0 1.5rem; }

label { display: block; font-size: .875rem; color: var(--muted); margin-bottom: .375rem; }

input {
  width: 100%;
  padding: .75rem;
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: .5rem;
}

button, .connect {
  display: block;
  width: 100%;
  margin-top: .75rem;
  padding: .875rem;
  font: inherit;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: .5rem;
  cursor: pointer;
}

button[disabled] { opacity: .5; cursor: default; }

.connect { margin: 1.5rem 0 0; padding: 1.125rem; font-size: 1.125rem; }

.secondary {
  margin: .75rem 0 1.5rem;
  padding: 1.125rem;
  font-size: 1.125rem;
  color: var(--accent);
  background: transparent;
  border: 1px solid var(--accent);
}

.copy-fallback { margin: -1rem 0 1.5rem; font-size: .8125rem; color: var(--muted); }
.copy-fallback input {
  display: block;
  width: 100%;
  margin-top: .5rem;
  padding: .5rem;
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: .8125rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: .5rem;
}

.error { color: var(--error); margin-top: 1rem; }

.who, .updated { margin: .25rem 0; }
.updated { color: var(--muted); font-size: .875rem; }

.hint { margin-top: 1.5rem; font-size: .8125rem; color: var(--muted); }

details { margin-top: 1rem; font-size: .875rem; }
summary { cursor: pointer; color: var(--muted); }

#qr { margin-top: .75rem; }
#qr svg { width: 100%; height: auto; background: #fff; padding: .5rem; border-radius: .5rem; }