.app--auth {
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--color-blue-border) 85%, transparent), transparent 34rem),
    linear-gradient(135deg, var(--color-blue-soft) 0%, var(--color-blue-muted) 100%);
}

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
}

.auth-card {
  width: min(100%, 29rem);
  overflow: hidden;
  border-radius: 1.25rem;
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
}

.auth-hero {
  background: var(--color-blue);
  color: var(--color-surface);
  padding: 2rem;
  text-align: center;
}

.auth-hero h1 {
  margin-block-start: 1rem;
  font-size: 1.6rem;
  line-height: 1.2;
}

.auth-hero p {
  margin-block-start: 0.5rem;
  color: var(--color-blue-muted);
}

.brand-mark--large {
  width: 4rem;
  height: 4rem;
  margin-inline: auto;
  background: var(--color-overlay-md);
}

.brand-mark--large .icon {
  width: 2.4rem;
  height: 2.4rem;
}

.auth-panel {
  padding: 2rem;
}

.button--microsoft {
  width: 100%;
  background: var(--color-blue);
  color: var(--color-surface);
}

.button--microsoft:hover {
  background: var(--color-blue-strong);
}

.auth-note {
  margin-block-start: 1rem;
  color: var(--color-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.auth-note--error {
  margin-block: 0 1rem;
  border-inline-start: 0.25rem solid var(--color-danger, #b42318);
  background: color-mix(in srgb, var(--color-danger, #b42318) 9%, transparent);
  color: var(--color-text);
  padding: 0.85rem 1rem;
}

.demo-logins {
  margin-block-start: 2rem;
  padding-block-start: 1.5rem;
  border-block-start: 0.0625rem solid var(--color-border);
}

.demo-logins h2 {
  color: var(--color-muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.demo-list {
  display: grid;
  gap: 0.75rem;
  margin-block-start: 0.8rem;
}

.demo-login {
  width: 100%;
  border-radius: var(--radius-sm);
  background: var(--color-surface-muted);
  color: var(--color-text);
  padding: 0.75rem 1rem;
  text-align: start;
  transition: background 160ms ease, transform 160ms ease;
}

.demo-login:hover {
  background: var(--color-border);
  transform: translateY(-0.0625rem);
}

.demo-login:focus-visible {
  outline: 0.1875rem solid var(--color-focus-ring);
  outline-offset: 0.1875rem;
}

.demo-login span {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
  align-items: baseline;
}

.demo-login small {
  color: var(--color-muted);
}

@media (max-width: 42em) {
  .auth-page {
    padding: 1rem;
  }

  .auth-hero,
  .auth-panel {
    padding: 1.5rem;
  }
}