.portal-assistant-btn {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(
    135deg,
    var(--color-blue) 0%,
    var(--color-purple) 100%
  );
  box-shadow:
    0 0.5rem 1.25rem rgba(59, 130, 246, 0.35),
    inset 0 0.0625rem 0 rgba(255, 255, 255, 0.2);
  transition:
    transform var(--motion-base),
    box-shadow var(--motion-base);
  z-index: 40;
}

.portal-assistant-btn:hover {
  transform: scale(1.08);
  box-shadow:
    0 0.75rem 1.75rem rgba(59, 130, 246, 0.45),
    inset 0 0.0625rem 0 rgba(255, 255, 255, 0.25);
}

.portal-assistant-btn:active {
  transform: scale(1.02);
}
