:root {
  color-scheme: light dark;
  --bg: #f4f2ee;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6b6b70;
  --border: #e3e0da;
  --accent: #3b5bdb;
  --accent-text: #ffffff;
  --error: #c92a2a;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #151517;
    --card: #1f1f23;
    --text: #ececf0;
    --muted: #9a9aa3;
    --border: #2e2e34;
    --accent: #748ffc;
    --accent-text: #0b0b0d;
    --error: #ff8787;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

main {
  width: 100%;
  max-width: 380px;
  padding: 32px 28px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
}

h1 { margin: 0 0 12px; font-size: 22px; }
h2 { margin: 28px 0 8px; font-size: 17px; }
p { margin: 0 0 16px; }
a { color: var(--accent); }
[hidden] { display: none !important; }

.site {
  margin-bottom: 4px;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.hint { font-size: 14px; color: var(--muted); }

label { display: block; margin-bottom: 4px; font-size: 14px; font-weight: 600; }

input {
  width: 100%;
  margin-bottom: 14px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
input:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

button {
  width: 100%;
  padding: 12px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: default; }
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
button + button { margin-top: 10px; }

.links { margin-top: 14px; text-align: center; }
.optional { font-weight: 400; color: var(--muted); }

.warning {
  padding: 12px;
  border: 1px solid var(--error);
  border-radius: 10px;
  font-size: 14px;
  color: var(--error);
}

.item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--border);
}
.item:last-child { margin-bottom: 12px; border-bottom: 1px solid var(--border); }
.item .hint { margin: 0; }
.actions { display: flex; gap: 6px; flex-shrink: 0; }
button.small { width: auto; padding: 6px 10px; font-size: 13px; }
.actions button + button { margin-top: 0; }

.codes {
  margin: 0 0 12px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg);
  font: 15px/1.7 ui-monospace, "SF Mono", Consolas, monospace;
  text-align: center;
}

.status { min-height: 1.5em; margin: 14px 0 0; font-size: 14px; color: var(--error); }
.status.ok { color: var(--muted); }