/* SINDSERV | Botão Voltar ao Topo: desktop e celular */
#btnTopo {
  position: fixed;
  bottom: 26px;
  right: 26px;
  z-index: 1050;
  display: none; /* regra de exibição continua no JavaScript existente */
  width: auto;
  height: auto;
  min-height: 52px;
  padding: 7px 18px 7px 7px;
  border: 1px solid rgba(255,255,255,.17);
  border-radius: 999px;
  background: #19177f;
  color: #fff;
  box-shadow: 0 8px 26px rgba(21,18,84,.22);
  font: 700 13px/1.2 system-ui, -apple-system, 'Segoe UI', sans-serif;
  letter-spacing: .01em;
  cursor: pointer;
  transition: transform .2s ease, background-color .2s ease, box-shadow .2s ease;
}
#btnTopo .topo-conteudo { display: flex; align-items: center; gap: 11px; white-space: nowrap; }
#btnTopo .topo-icone {
  display: grid; place-items: center;
  width: 38px; height: 38px;
  border-radius: 50%; background: #ffbf00; color: #19177f;
}
#btnTopo .topo-icone svg { display: block; width: 18px; height: 18px; }
#btnTopo:hover { background: #2824a1; transform: translateY(-3px); box-shadow: 0 12px 28px rgba(21,18,84,.26); }
#btnTopo:focus-visible { outline: 3px solid #ffbf00; outline-offset: 3px; }
#btnTopo:active { transform: translateY(-1px); }
@media (max-width: 768px) {
  #btnTopo { bottom: 18px; right: 16px; padding: 5px; width: 48px; height: 48px; min-height: 48px; }
  #btnTopo .topo-icone { width: 38px; height: 38px; }
  #btnTopo .topo-texto { display: none; }
  #btnTopo .topo-conteudo { gap: 0; }
}
@media (prefers-reduced-motion: reduce) {
  #btnTopo { transition: none; }
  #btnTopo:hover { transform: none; }
}