/* The sign-in sheet extends the current e4 appearance; no new visual identity. */
body.sign-in-open { overflow: hidden; }
.account-page:has(.sign-in-introduction) { max-width: 480px; padding-top: 40px; }
.account-page:has(.sign-in-introduction) h1 { font-size: 34px; margin-bottom: 24px; }
.account-page:has(.sign-in-introduction) .empty-card { padding: 0; border: 0; background: none; }
.sign-in-sheet {
  box-sizing: border-box;
  width: min(440px, calc(100% - 32px));
  max-width: 100%;
  max-height: calc(100dvh - 32px);
  margin: auto;
  padding: 28px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow-y: auto;
}
.sign-in-sheet::backdrop { background: color-mix(in srgb, var(--bg) 75%, transparent); }
.sign-in-sheet .sheet-close { float: right; margin: -8px -8px 8px 16px; min-height: 44px; background: transparent; border-color: transparent; }
.sign-in-sheet h2 { font-family: var(--display); font-size: 34px; line-height: 1.1; margin: 0 0 16px; }
.sign-in-sheet .lead { font-size: 19px; }
.sign-in-sheet .empty-card { background: none; border: 0; padding: 0; }
.sign-in-sheet .muted { font-size: 14px; margin-bottom: 0; }
.sign-in-sheet .muted a { color: var(--violet); text-decoration: underline; }
.sign-in-sheet input { min-width: 0; max-width: 100%; box-sizing: border-box; }
.sign-in-introduction { color: var(--muted); font-size: 16px; overflow-wrap: anywhere; }
.sign-in-sheet .account-form { margin: 20px 0; gap: 10px; clear: both; }
.sign-in-sheet .account-form .primary { width: 100%; margin-top: 6px; }
.sign-in-sheet .form-message:empty { display: none; }
.sign-in-sheet .account-actions { margin: 0; gap: 8px; }
.sign-in-sheet .account-actions button { background: transparent; border-color: transparent; padding-inline: 0; margin-right: 12px; font-size: 14px; }
.sign-in-sheet .sign-in-privacy { font-size: 13px; line-height: 1.5; }
@media (max-width: 680px) {
  .sign-in-sheet { width: 100%; max-height: calc(100dvh - 16px); margin: auto 0 0; border-radius: 16px 16px 0 0; padding: 24px 20px max(24px, env(safe-area-inset-bottom)); }
}