.auth-topbar {
  display: flex;
  justify-content: flex-end;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
}
.signin {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  background: #fff;
  border: 1px solid #888;
  border-radius: 4px;
  color: #222;
  text-decoration: none;
}
.signin:hover { background: #f4f4f4; }
.signed-in { display: flex; align-items: center; gap: 0.5rem; }
.signed-in .avatar { width: 24px; height: 24px; border-radius: 50%; }
.signed-in .me-name { font-weight: 500; }
.signed-in .signout-form { margin: 0; }
.signed-in .signout-form button {
  background: none; border: none; color: #666;
  cursor: pointer; padding: 0; text-decoration: underline; font-size: inherit;
}
.auth-error {
  padding: 0.6rem 1rem; margin: 0.5rem 1rem; border-radius: 4px;
  background: #fff4e5; border: 1px solid #f0a070; color: #663300;
}
.form-error { color: #b00020; margin-top: 0.5rem; }

.seat-avatar {
  width: 18px; height: 18px; border-radius: 50%;
  vertical-align: middle; margin-right: 0.25rem;
}