/* ─── FOOTER ────────────────────────────────────────────────────── */

#footer {
  background: var(--fundo-dark);
  padding: 32px 24px;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-author {
  font-size: 0.82rem;
  font-weight: 300;
  color: rgba(255,255,255,0.4);
  margin-bottom: 6px;
}

.footer-copy {
  font-size: 0.78rem;
  font-weight: 300;
  color: rgba(255,255,255,0.25);
}

/* Botão scroll-to-top */
#scroll-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--azul);
  color: white;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  z-index: 99;
  box-shadow: 0 4px 20px rgba(27,107,58,0.45);
  transition: opacity var(--transition), transform var(--transition);
}

#scroll-top.visible { opacity: 1; pointer-events: auto; }
#scroll-top:hover   { transform: translateY(-3px); background: #114d2a; }