.sitio-footer {
    border-top: 1px solid var(--sombra);
    background: var(--color-fondo-base);
    color: var(--color-texto);
    font-size: 0.85rem;
    width: 100%;
  }
  
  .contenedor-footer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 50px 0px 50px 0px;
    display: grid;
    grid-template-columns: 1.4fr 1fr 1.2fr;
    gap: 3rem;
    align-items: start;
    box-sizing: border-box;
  }
  
  .columna-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .logo-footer {
    height: 60px;
    width: auto;
    margin: 0 auto 1.2rem auto;
    display: block;
    filter: var(--filtro-imagen);
  }
  
  .descripcion-empresa {
    color: var(--color-texto);
    line-height: 1.7;
    margin: 0;
    max-width: 320px;
    font-size: 0.85rem;
  }
  
  .titulo-columna {
    font-size: 0.78rem;
    font-weight: 800;
    color: var(--color-texto);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    margin: 0 0 1.5rem 0;
  }
  
  .lista-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.85rem;
  }
  
  .lista-links a {
    color: var(--color-texto);
    text-decoration: none;
    transition: color 0.2s ease;
    font-size: 0.85rem;
    white-space: nowrap;
  }
  
  .lista-links a:hover {
    color: var(--color-acento);
  }
  
  .lista-contacto {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }
  
  .lista-contacto a,
  .lista-contacto .item-ubicacion {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.75rem;
    color: var(--color-texto);
    text-decoration: none;
    transition: color 0.2s ease;
    font-size: 0.85rem;
    white-space: nowrap;
  }
  
  .icono-contacto {
    font-size: 15px;
    width: 20px;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    color: var(--color-acento);
    transition: transform 0.2s ease, color 0.2s ease;
  }
  
  .base-footer {
    border-top: 1px solid var(--sombra);
    padding: 1.5rem 1rem;
    text-align: center;
    background-color: var(--color-fondo-base);
    transition: background-color 0.3s ease, border-color 0.3s ease;
  }
  
  .base-footer p {
    margin: 0;
    color: var(--texto-secundario);
    font-size: 0.78rem;
    letter-spacing: 0.02em;
  }
  
  
  @media (max-width: 900px) {
    .contenedor-footer {
      grid-template-columns: 1fr 1fr;
      row-gap: 3rem;
      column-gap: 2rem;
    }
  
    .columna-footer.marca {
      grid-column: 1 / -1;
    }
  }
  
  @media (max-width: 560px) {
    .sitio-footer {
      padding-top: 3rem;
    }
  
    .contenedor-footer {
      grid-template-columns: 1fr;
      row-gap: 2.5rem;
      padding: 0 1.5rem 2.5rem 1.5rem;
    }
  
    .descripcion-empresa {
      max-width: 100%;
      font-size: 0.83rem;
    }
  
    .titulo-columna {
      font-size: 0.72rem;
      margin-bottom: 1.1rem;
    }
  
    .lista-links a,
    .lista-contacto a,
    .lista-contacto .item-ubicacion {
      font-size: 0.9rem;
    }
  
    .lista-links {
      display: grid;
      grid-template-columns: 1fr 1fr;
      row-gap: 1rem;
      column-gap: 0.5rem;
      justify-items: center;
    }
  
    .lista-contacto {
      gap: 1rem;
    }
  
    .base-footer {
      padding: 1.25rem 1rem;
    }
  
    .base-footer p {
      font-size: 0.72rem;
      line-height: 1.5;
    }
  }