/* Sign in / create account (signin.html): one emailed-code form, two framings. */
.signin-shell { width: min(520px, calc(100% - 32px)); }
.signin-page .billing-panel h1 { font-size: clamp(1.75rem, 5vw, 2.25rem); }

.signin-mode {
  display: inline-grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin: 0 0 18px;
  padding: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--glass);
}
.signin-mode label { position: relative; cursor: pointer; }
.signin-mode input {
  position: absolute;
  inset: 0;
  opacity: 0;
  margin: 0;
  cursor: pointer;
}
.signin-mode span {
  display: block;
  padding: 7px 16px;
  border-radius: 999px;
  color: var(--ink-2);
  font-size: 0.92rem;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
}
.signin-mode input:checked + span {
  background: var(--ink);
  color: #fff;
}
.signin-mode input:disabled { cursor: not-allowed; }
.signin-mode input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 2px; }

.signin-page .billing-field input:focus-visible { outline: 2px solid var(--ink); outline-offset: 1px; }
.signin-page .billing-field input[aria-invalid="true"] { border-color: #b42318; }
#signin-form button[type="submit"] { width: 100%; justify-content: center; }
.signin-page .billing-panel button:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.signin-sent { margin: 18px 0 0; color: var(--muted); line-height: 1.6; }
.signin-sent strong { color: var(--ink); word-break: break-all; }
.signin-page .billing-panel .signin-text-button {
  display: inline;
  margin: 0 0 0 6px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: none;
  color: var(--ink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.signin-page .billing-panel .signin-resend { display: block; margin: 14px auto 0; }
.signin-page .billing-panel .signin-resend[hidden] { display: none; }

.signin-status { min-height: 1.4em; margin: 14px 0 0; color: var(--muted); }
.signin-status.is-error { color: #b42318; }
.signin-fineprint { margin: 18px 0 0; padding-top: 16px; border-top: 1px solid var(--border); color: var(--muted); font-size: 0.9rem; }

@media (max-width: 540px) {
  .signin-mode { display: grid; width: 100%; }
}

/* Continue-with buttons (#664): one per row, so "Continue with Microsoft"
   never wraps in this narrower card. */
.signin-page .account-provider-list { grid-template-columns: 1fr; gap: 8px; }
.signin-page .billing-panel .account-provider-btn { min-height: 44px; }
.signin-page .account-provider-list[aria-disabled="true"] { opacity: 0.65; }