.footer {
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background-color: rgba(0, 0, 0, 0.8);
  color: #ffffff;
  border-top: 1px solid transparent;
  box-shadow: 0px -2px 5px rgba(127, 190, 151, 0.2);
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: 1000;
  padding: 1rem 0;
}

.footer__nav__list {
  display: flex;
  gap: 1rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__nav__list .nav__link {
  font-size: 1.5rem;
  color: #ffffff;
  text-decoration: none;
  padding: 0.5rem;
  border-radius: 50%;
  transition: color 0.3s ease, background-color 0.3s ease;
}

.footer__nav__list .nav__link:hover {
  color: #0077b5;
  background-color: rgba(255, 255, 255, 0.1);
}

.btn__download {
  background-color: #5a9e74;
  color: #ffffff;
  border: none;
  border-radius: 5px;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 0 8px 1px rgba(90, 158, 116, 0.8);
  margin-top: 1rem;
}

.btn__download:hover {
  opacity: 0.8;
  background-color: #497d5d;
  box-shadow: 0 0 6px rgba(73, 125, 93, 0.8);
}

.copyright {
  margin-top: 1rem;
  font-size: 0.875rem;
  text-align: center;
}

@media screen and (max-width: 768px) {
  .footer {
    flex-direction: column;
    padding: 0.5rem 0;
  }

  .footer__nav__list {
    gap: 0.5rem;
  }

  .footer__nav__list .nav__link {
    font-size: 1.25rem;
  }

  .copyright {
    font-size: 0.75rem;
  }
}