/* Estilos comunes para header y footer */
.main-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 5%;
  background-color: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
}
.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}
.main-nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color 0.3s ease;
}
.main-nav a:hover {
  color: #ccc;
}
.main-footer {
  background-color: #1a1a1a;
  color: #fff;
  text-align: center;
  padding: 3rem 5%;
  margin-top: 4rem;
}
.social-icons {
  margin-bottom: 1rem;
}
.social-icons a {
  color: #fff;
  text-decoration: none;
  margin: 0 1rem;
  font-size: 1.5rem;
  transition: color 0.3s;
}
.social-icons a:hover {
  color: #ccc;
}
.copyright {
  font-size: 0.9rem;
  color: #aaa;
}
@media (max-width: 768px) {
  .main-header {
    flex-direction: column;
    padding: 1rem;
  }
  .main-nav ul {
    margin-top: 1rem;
    gap: 1.5rem;
  }
}
@media (max-width: 480px) {
  .logo {
    font-size: 1.1rem;
  }
  .main-nav ul {
    flex-direction: column;
    gap: 1rem;
  }
}