:root {
  --bg: #f7f8fa;
  --fg: #1f2933;
  --muted: #5c6773;
  --accent: #1a73e8;
  --accent-hover: #1557b0;
  --border: #d6dade;
  --card: #ffffff;
  --hint: #7a828a;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

main {
  max-width: 560px;
  margin: 0 auto;
  padding: max(1rem, env(safe-area-inset-top)) 1rem max(1rem, env(safe-area-inset-bottom));
}

header h1 { font-size: 1.5rem; margin-bottom: 0.25rem; }
.subtitle { color: var(--muted); margin-top: 0; font-size: 0.875rem; }

section {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  margin: 1rem 0;
}

button {
  font: inherit;
  font-size: 1rem;
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--fg);
  cursor: pointer;
  min-height: 44px;
  margin: 0.25rem 0.25rem 0.25rem 0;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  font-weight: 600;
}

button.primary:hover { background: var(--accent-hover); }
button:active { transform: translateY(1px); }

.hint { font-size: 0.875rem; color: var(--hint); margin-top: 0.5rem; }

dl.claims {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 0.5rem 1rem;
  margin: 0 0 1rem;
  font-size: 0.9rem;
}

dl.claims dt { color: var(--muted); }
dl.claims dd { margin: 0; word-break: break-all; font-family: ui-monospace, "SF Mono", Menlo, monospace; }

.passkey-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
}
.passkey-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.5rem;
}
.passkey-name { font-weight: 600; flex: 1 1 auto; }
.passkey-meta { color: var(--muted); font-size: 0.85rem; flex: 1 1 100%; }

button.danger {
  background: #fdf2f2;
  border-color: #f5c2c0;
  color: #b42318;
}
button.danger:hover { background: #fce4e4; }

#diagnostics h3 { margin-top: 0; font-size: 1rem; }
#event-log { font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: 0.8rem; padding-left: 1.25rem; max-height: 12rem; overflow-y: auto; }
#event-log li { color: var(--muted); }
#event-log li:first-child { color: var(--fg); }