/* -----------------------------
   GENERAL
----------------------------- */

* {
    box-sizing: border-box;
}

body {
    margin: 0;

    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        Helvetica,
        Arial,
        sans-serif;

    color: #222;
    background: #ffffff;
    line-height: 1.7;
}


/* -----------------------------
   NAVIGATION
----------------------------- */

header {
    border-bottom: 1px solid #e5e5e5;
}

.navbar {
    max-width: 1100px;
    margin: auto;

    padding: 20px 30px;

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

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    color: #222;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    color: #555;
    text-decoration: none;
}

.nav-links a:hover {
    color: #000;
}


/* -----------------------------
   MAIN CONTENT
----------------------------- */

main {
    max-width: 1000px;
    margin: auto;
    padding: 0 30px;
}

section {
    padding: 80px 0;

    border-bottom:
        1px solid #eeeeee;
}

section h2 {
    font-size: 2rem;
    margin-bottom: 30px;
}


/* -----------------------------
   HERO
----------------------------- */

.hero {
        flex-direction: column-reverse;
        align-items: center;
        text-align: center;
        padding-top: 60px;
    }

.hero-text {
    max-width: 650px;
}

.hero h1 {
    font-size: 3.5rem;
    margin: 0;
    line-height: 1.1;
}

.hero h2 {
    font-size: 1.3rem;
    font-weight: 400;
    color: #666;
    margin-top: 15px;
}

.hero p {
    font-size: 1.1rem;
    color: #444;
    margin-top: 25px;
}

.profile-photo {
    width: 350px;
    height: 350px;

    object-fit: cover;
    object-position: center center;

    border-radius: 50%;
}



/* -----------------------------
   SOCIAL LINKS
----------------------------- */

.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
}

.social-links a {
    color: #1769aa;
    text-decoration: none;
}

.social-links a:hover {
    text-decoration: underline;
}



/* -----------------------------
   PUBLICATIONS
----------------------------- */

.publication {
    margin-bottom: 35px;
}

.publication h3 {
    margin-bottom: 5px;
}

.publication p {
    color: #555;
}

.publication a {
    color: #1769aa;
    text-decoration: none;
}


/* -----------------------------
   BUTTON
----------------------------- */

.button {
    display: inline-block;

    margin-top: 15px;

    padding: 10px 18px;

    background: #222;
    color: white;

    border-radius: 5px;

    text-decoration: none;
}

.button:hover {
    background: #444;
}


/* -----------------------------
   NEWS
----------------------------- */

.news-list {
    padding-left: 20px;
}

.news-list li {
    margin-bottom: 12px;
}


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

footer {
    max-width: 1000px;
    margin: auto;

    padding: 40px 30px;

    color: #777;
}


/* -----------------------------
   MOBILE
----------------------------- */

@media (max-width: 700px) {

    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        gap: 15px;
    }

    .hero {
        flex-direction: column-reverse;
        align-items: flex-start;

        padding-top: 60px;
    }

    .hero h1 {
        font-size: 2.7rem;
    }

    .profile-photo {
        width: 160px;
        height: 160px;

        object-fit: cover;
        object-position: center 30%;
    }

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

}

/* -----------------------------
   CONTENT PAGES
----------------------------- */

main > section {
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

main > section h1 {
    font-size: 3rem;
    margin-top: -10px;
    margin-bottom: 30px;
}

main > section h2 {
    margin-top: 50px;
}

main > section h3 {
    margin-top: 30px;
}

@media (max-width: 700px) {
    main > section {
        text-align: center;}
}


.page-preview {
    max-width: 850px;
}