.call-fab {
  position: fixed;
  right: 24px;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  z-index: 1040;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: #2b7a69;
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(43, 122, 105, 0.45);
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.call-fab:hover,
.call-fab:focus {
  background-color: #38a089;
  color: #ffffff;
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(43, 122, 105, 0.55);
}

.call-fab:active {
  transform: scale(0.97);
}

.call-fab svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

@media (max-width: 575px) {
  .call-fab {
    right: 16px;
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    width: 52px;
    height: 52px;
  }

  .call-fab svg {
    width: 24px;
    height: 24px;
  }
}