*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
  display: grid;
  height: 100%;
  grid-template-areas:
    "menu" 
    "seccion-principal"
    "footer";
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  font-family: sans-serif;
}

nav {
  grid-area: menu;
  background-color: #031c4d;
  color: white;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  text-align: left;
  
}
.menu-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}


.menu-left ul {
  list-style: none;
}

.menu-left ul li {
  margin-bottom: 20px;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: bold;
  font-size: 18px;
}

.filtro {
  padding-bottom: 10px;
  padding-top: 3px;
}

.menu-item ul{
    display: none;
    color: white;
}

.menu-toggle{
    display: block;
    font-size: 24px;
    cursor: pointer;
    margin-left: 19rem;


}

main {
  grid-area: seccion-principal;
  padding: 20px;
}

footer {
  text-align: center;
  color: #031c4d;
  padding-top: 10px;

}

footer .RSS {
  margin-bottom: 10px;
  font-size: 20px;
}

/* Tarjetas */
.cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 15px;
}

@media (min-width: 576px) and (max-width: 991px) {
  body {
    grid-template-areas:
      "menu"
      "seccion-principal"
      "footer";
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
  }

  nav {
    flex-direction: row; 
    align-items: center;
    justify-content: space-between;
    padding: 10px 20px;
  }

  .logo {
    flex: 0 0 auto;
    order: 0;
  }

  .menu-left {
    display: flex;
    flex-direction: row;
    justify-content: flex-end;
    align-items: center;
    flex: 1;
    gap: 20px;
  }

  .menu-item ul {
    display: flex !important;
    flex-direction: row;
    gap: 20px;
    background-color: transparent;
    padding: 0;
  }

  .menu-item ul li {
    margin: 0;
  }

  .menu-item ul li a {
    color: white;
    text-decoration: none;
    font-weight: normal;
  }

  .menu-toggle {
    display: none;
  }

  .cards {
    grid-template-columns: 1fr 1fr;
  }

.filtro {
  background-color: #f0f0f0; /* gris */
  padding: 10px 20px;        /* padding interno */
  margin: 0;                 /* sin margen externo */
  width: 100vw;              /* ancho total de la ventana */
  box-sizing: border-box;    /* incluye padding en el ancho */
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}



  footer {
    grid-area: footer;
    text-align: center;
    padding: 20px;
  }
}


@media (min-width: 992px) {
  body {
    grid-template-areas:
      "menu seccion-principal"
      "menu footer";
    grid-template-columns: 250px 1fr;
    grid-template-rows: 1fr;
  }
  nav {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;

  }
  nav .menu-left ul{
    color: white;
    padding: 10px;
    border-radius: 5px;
    list-style: none;
    font-weight: normal;
  }

  
  nav .menu-left ul li a {
    color: white;
    text-decoration: none;
  }

  nav .menu-left ul li a:hover {
    text-decoration: underline;
  }
  .menu-item ul {
    display: block !important;
  }
    .menu-item ul l{
    display: block !important;
  }
  
  
    .cards {
        grid-template-columns: 1fr 1fr 1fr;
    }
    .menu-toggle{
    display: block !important;
    }
}

.card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 5px;
  border: 1px solid #ccc;
  border-radius: 10px;
  background-color: #ffffff;
  text-align: center;
  
}

.card img {
  width: 100%;
  height: 200px;
  border-radius: 5px;
  object-fit: cover;
}

.card-body {
  display: flex;
  flex-direction: column;
  margin: 10px 0;
}

.card-body h3{
    margin-bottom: 5px;
}

.card-body p{
    margin-top: 0;
    margin-bottom: 10px;
}

.card button {
  background: #031c4d;
  color: white;
  border: none;
  padding: 8px;
  border-radius: 5px;
  cursor: pointer;
}

.card button:hover {
  background: #00256e;
}


.pagination-container {
  text-align: center;
  margin-top: 20px;
}

.pagination {
  display: inline-block;

}

.pagination a {
  color: black;
  float: left;
  padding: 8px 16px;
  text-decoration: none;
  transition: background-color .3s;
  border: 1px solid #ddd;
}

.pagination a.active {
  background-color: #00256e;
  color: white;
  border: 1px solid #00256e;
}

.pagination a:hover:not(.active) {background-color: #ddd;}