:root {
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #666;
  --border: #ddd;
  --accent: #111;
  --error: #b00;
  --success: #166534;
  --warning: #92400e;
}
* { box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  max-width: 640px;
  margin: 48px auto;
  padding: 0 16px;
  line-height: 1.5;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
header h1 {
  font-size: 18px;
  margin: 0;
}
header nav a {
  margin-left: 12px;
  font-size: 13px;
}
h1 { font-size: 22px; margin: 12px 0; }
h2 { font-size: 16px; margin: 24px 0 8px; }
form { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
input[type=text], input[type=email], input[type=password], textarea {
  padding: 8px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
}
textarea { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 12px; }
button {
  padding: 10px 16px;
  font-size: 14px;
  border: 0;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
}
button.primary { background: var(--accent); color: #fff; }
button.secondary { background: #eee; color: var(--fg); }
button[disabled] { opacity: 0.5; cursor: not-allowed; }
.actions { display: flex; gap: 8px; margin-top: 8px; }
.scopes {
  background: #fff;
  padding: 12px;
  border-radius: 4px;
  border: 1px solid var(--border);
  margin: 12px 0;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 11px;
  word-break: break-all;
}
.scopes strong { color: var(--muted); font-family: inherit; font-size: 12px; }
#status {
  margin: 16px 0;
  padding: 12px;
  border-radius: 4px;
  font-size: 14px;
  min-height: 20px;
}
#status[data-kind=error] { background: #fee2e2; color: var(--error); }
#status[data-kind=success] { background: #dcfce7; color: var(--success); }
#status[data-kind=warning] { background: #fef3c7; color: var(--warning); }
#status[data-kind=info]:not(:empty) { background: #e0e7ff; color: #3730a3; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: 13px; }
.warn {
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: 4px;
  padding: 10px;
  margin: 12px 0;
  font-size: 13px;
  color: var(--warning);
}
code { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 12px; }
pre { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 11px; background: #fff; padding: 12px; border: 1px solid var(--border); border-radius: 4px; overflow-x: auto; word-break: break-all; white-space: pre-wrap; }