/* ng-id の画面。スクリプトなし・外部フォントなし */
:root { --bg: #f4f5f7; --card: #fff; --text: #1d1f23; --muted: #5b616b; --accent: #2a5bd7; --error: #b3261e; --border: #d9dce1; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #15171a; --card: #1f2226; --text: #e8eaed; --muted: #a2a8b1; --accent: #7aa2ff; --error: #f2b8b5; --border: #3a3f46; }
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; background: var(--bg); color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif; line-height: 1.6; }
.card { width: 100%; max-width: 400px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 28px 24px; }
.brand { margin: 0; font-size: 13px; color: var(--muted); letter-spacing: .06em; }
h1 { margin: 4px 0 20px; font-size: 22px; }
label { display: block; margin-bottom: 14px; font-size: 14px; color: var(--muted); }
input { display: block; width: 100%; margin-top: 4px; padding: 10px 12px; font-size: 16px; color: var(--text); background: transparent;
  border: 1px solid var(--border); border-radius: 8px; }
button, .button { display: block; width: 100%; padding: 11px; font-size: 15px; font-weight: 600; text-align: center; text-decoration: none;
  color: #fff; background: var(--accent); border: 0; border-radius: 8px; cursor: pointer; }
button.secondary, .button.secondary { color: var(--text); background: transparent; border: 1px solid var(--border); }
.providers { display: grid; gap: 8px; }
.sep { text-align: center; color: var(--muted); font-size: 13px; margin: 14px 0; }
.links { margin-top: 18px; font-size: 14px; text-align: center; }
a { color: var(--accent); }
.error { color: var(--error); font-size: 14px; }
.notice { font-size: 14px; }
.dev { font-size: 12px; word-break: break-all; padding: 8px; border: 1px dashed var(--border); border-radius: 6px; }
label.check { display: flex; gap: 8px; align-items: flex-start; color: var(--text); }
label.check input { display: inline-block; width: auto; flex: none; margin-top: 5px; }