* {
    box-sizing: border-box;
    margin: 0;
}

:root {
    --color-principal: hsl(0, 0%, 100%);
    --color-textos: hsl(0, 0%, 20%);
    --color-fondo: hsl(51, 100%, 97%);
    --color-contraste: hsl(185, 100%, 79%);
    --espacio-medio: 1rem;
    --color-2: hsl(180, 100%, 94%);
}

body {
    font-family: 'Nunito', sans-serif;
    color: var(--color-textos);

    background:
    linear-gradient(
        180deg,
        hsl(180, 100%, 94%),
        hsl(193, 60%, 85%)
    );

    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

/* ---------- TEXTOS ---------- */

p,
li {
    max-width: 65ch;
    line-height: 1.7;
}

p {
    margin-block: var(--espacio-medio);
}

h1,
h2,
h3,
h4 {
    font-family: 'Poppins', sans-serif;
    color: rgb(0, 63, 67);
}

h1 {
    margin-right: auto;
}

h3::before {
    content: "★ ";
}

h4::before {
    content: "⤷ ";
}

/* ---------- SECCIONES ---------- */

section {
    max-width: 900px;
    margin: 50px auto;
    padding: 30px;

    background-color: var(--color-principal);

    border-radius: 20px;

    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.117);
    
}



/* IMÁGENES RESPONSIVE */

section img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
}

/* ---------- HEADER ---------- */

header {
    background-color: var(--color-contraste);
    width: 100%;
    margin: 0 auto 3rem auto;
    padding: 1.5rem;

   display: flex;
    justify-content: space-between;
    align-items: center;

    border-radius: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.117);
}

header img {
    width: 80px;
    height: auto;
}

header nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}


header nav ul {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;

    list-style: none;
    padding: 0;
    margin: 0;
}

header nav li {
    padding: 0;
    margin: 0;
}

header nav li::before {
    display: none;
}

header nav a {
    display: block;

    padding: 0.75rem 1.25rem;

    border-radius: 10px;

    text-decoration: none;
    font-weight: 700;

    color: rgb(0, 63, 67);

    transition: 0.3s;
}

header nav a:hover {
    background-color: hsl(189, 100%, 10%);
    color: white;
}

/* ---------- PRESENTACIÓN ---------- */

.presentacion-fondo {
    width: 100%;

    padding: 80px 20px;

    border-radius: 20px;

    margin: 50px auto;

    background-image: url("fondopresentacion.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    overflow: hidden;
}

.presentacion {
    max-width: 700px;
    width: 100%;

    margin: 0 auto;

    background-color: white;

    padding: 40px;

    border-radius: 20px;

    text-align: left;
}

.avatarvalu {
    width: 220px;
    height: 220px;

    object-fit: cover;

    border-radius: 50%;

    border: 5px solid var(--color-contraste);

    padding: 0;

    margin: 1rem auto;

    display: block;
}

/* ---------- LISTAS ---------- */

ul {
    list-style: none;
    padding-left: 0;
}

li {
    position: relative;
    padding-left: 1.2rem;
    margin-bottom: .5rem;
}

li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: rgb(0, 63, 67);
    font-weight: bold;
}

/* ---------- LINKS COMPAÑEROS ---------- */

.links-compañeros ul {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;

    justify-content: flex-start;

    padding: 0;
}

.links-compañeros li {
    padding-left: 0;
}

.links-compañeros li::before {
    display: none;
}

.links-compañeros a {
    display: inline-block;

    padding: 10px 18px;

    background-color: var(--color-2);

    border-radius: 10px;

    text-decoration: none;

    color: black;
    font-weight: bold;

    transition: 0.3s;
}

.links-compañeros a:hover {
    background-color: hsl(208, 100%, 10%);
    color: white;
}

/* ---------- FOOTER ---------- */

footer {
    background-color: rgb(235, 249, 249);

    padding: 1.5rem 2rem;

    margin-top: 4rem;

    border-radius: 15px;

    border-top: 4px solid var(--color-contraste);

    box-shadow: none;

    font-style: normal;

    text-align: left;
}

.footerdatosacademicios {
    font-size: 1rem;

    text-transform: uppercase;

    letter-spacing: 1px;

    margin-bottom: 0.8rem;

    color: rgb(0, 63, 67);
}

footer p {
    margin: 0;

    font-size: 0.9rem;

    line-height: 1.7;

    color: rgb(70, 70, 70);

    max-width: none;
}

/* ---------- RESPONSIVE ---------- */

@media (max-width: 768px) {

    body {
        padding: 0.75rem;
    }

    section {
        padding: 20px;
    }

   header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 0.75rem 1rem;
    }

    header img {
        width: 45px;
    }

    header nav ul {
        flex-direction: row;
        gap: 0.5rem;
    }

    header nav a {
        width: auto;
        padding: 0.4rem 0.7rem;
        font-size: 0.85rem;
    }
}

    .presentacion {
        padding: 25px;
    }

    .links-compañeros ul {
        flex-direction: column;
    }

    .links-compañeros a {
        width: 100%;
        text-align: center;
    }


h3 {
    position: relative;
    margin-bottom: 1.5rem;
}



h4 {
    margin-top: 2rem;

    padding-left: 1rem;

    border-left: 4px solid var(--color-contraste);
}

.mis-intereses h2{
    margin-bottom: 2rem;
}

.carousel-intereses{
    display: flex;
    gap: 20px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 10px;
}

.card{
    min-width: 250px;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    scroll-snap-align: center;

    box-shadow: 0 4px 10px rgba(0,0,0,.1);

    transition: .3s;
}

.card:hover{
    transform: translateY(-5px);
}

.card img{
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.card h3{
    padding: 1rem 1rem 0;
}

.card p{
    padding: 0 1rem 1rem;
    font-size: .95rem;
}