* {
    box-sizing: border-box;
}

:root {
    --color0: #FFFFFF;
    --color1: #FDCFFA;
    --color2: #D78FEE;
    --color3: #9B5DE0;
    --color4: #639;
    --color5: #000000;
    --altos: 85px;
    --padding10: 10px;
}

body {
    padding: 0px;
    margin: 0px;
    font-family: Arial, Helvetica, sans-serif;
    display: grid;
    grid-template-rows: 120px auto 150px;
}

header {
    background-color: var(--color4);
    padding-top: calc((var(--altos) - 1.2em) / 2);

}

header ul {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    color: var(--color0);
    list-style: none;
    text-align: center;
    padding: 0px;
    margin: 0px;
}

header ul li a {
    text-decoration: none;
    color: var(--color0);
    
}

body {
    background-color: var(--color1);
    padding: 0px;
    margin: 0px;
    font-family: Arial, Helvetica, sans-serif;
    display: grid;
    grid-template-rows: var(--altos) auto 150px;
}

#filtrar {
    background-color: var(--color2);
    padding: var(--padding10);
    display: grid;
    grid-template-columns: 45% 45% calc(10% - (var(--padding10) * 2));
    gap: var(--padding10);
    margin-left: calc(var(--padding10) * 2);
    margin-top: calc(var(--padding10) * 2);
    margin-bottom: var(--padding10);
    border-radius: 5px;
}

#filtrar select {
    font-size: 1.2em;
    border-radius: 4px;
}

#filtrar button {
    background-color: var(--color4);
    border: 0px;
    font-size: 1.5em;
    color: var(--color1);
    border-radius: 3px;
}

#principal>section {
    padding: calc(var(--padding10) * 2);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--padding10);
}

#principal>section>article {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto auto auto;
    gap: var(--padding10);
    grid-template-areas:
        "titulo titulo"
        "texto imagen"
        "nada boton";
    background-color: var(--color1);
    padding: var(--padding10);
    border-radius: 4px;
    align-items: center;
}

#principal>section>article>h2 {
    grid-area: titulo;
    margin-top: 4px;
    margin-bottom: 4px;
}

#principal>section>article>p {
    grid-area: texto;
    display: block;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
}

#principal>section>article img {
    grid-area: imagen;
    width: 100%;
    border-radius: 4px;
}

#principal>section>article>div a {
    display: inline-block;
    background-color: var(--color2);
    color: var(--color0);
    padding: var(--padding10);
    text-decoration: none;
    border-radius: 3px;
}

main>div {
    background-color: var(--color2);
    color: var(--color0);
    display: block;
    unicode-bidi: isolate;
}

main>div>nav ul {
    list-style: none;
    margin: 0px;
    padding: 0px;
}

li {
    display: list-item;
    unicode-bidi: isolate;
}

main>div>nav ul a {
    color: var(--color0);
    text-decoration: var(--color3);
    display: inline-block;
    margin: var(--padding10);
}
.menu-container {
  position: fixed;          
  top: 0;
  right: 0;                 
  width: 25%;               
  height: 100vw;            
  background-color: var(--color3)
}

.menu {
  list-style: none;
  margin: 0;
  padding: 0 20px;
  display: flex;
  flex-direction: column;  
  align-items: flex-start;
}

.menu li {
  margin-bottom: 15px;
}

.menu a {
  display: block;
  text-decoration: none;
  color: var(--color0);
  font-weight: 500;
  line-height: 1.4;
  transition: color 0.3s ease, background-color 0.3s ease;
  padding: 8px;
  border-radius: 8px;
}
footer {
    display: block;
    unicode-bidi: isolate;
}

footer>div {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    padding-left: 150px;
    padding-right: 150px;
    padding-top: var(--padding10);
    padding-bottom: var(--padding10);
    gap: calc(var(--padding10) * 3);
    background-color: var(--color4);
}

footer img {
    max-width: 100%;
}


@media (max-width:600px) {
    header {
        flex-direction: colum;
        text-align: center;
    }

    main section,
    aside {
        width: 100%;
    }
}