:root {
    --ink: #1f3042;
    --muted: #65717a;
    --paper: #f7f6f1;
    --white: #fffefa;
    --line: #d9d9d2;
    --gold: #e4a62a;
    --gold-soft: #f4d99b;

    --max: 1180px;
}


/* ==============================
   RESET / BASE
   ============================== */

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;

    color: var(--ink);
    background: var(--white);

    font-family: "DM Sans", system-ui, sans-serif;
    line-height: 1.65;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
}


/* ==============================
   TYPOGRAPHY
   ============================== */

h1,
h2,
h3 {
    margin-top: 0;

    font-family: "Libre Baskerville", Georgia, serif;
    font-weight: 400;
    line-height: 1.2;
}

h1 {
    margin-bottom: 14px;
    font-size: clamp(2.15rem, 4vw, 3.6rem);
}

h2 {
    margin-bottom: 22px;
    font-size: clamp(2rem, 3.5vw, 3.15rem);
}

h3 {
    margin-bottom: 8px;
    font-size: 1.25rem;
}

.eyebrow,
.section-kicker {
    color: var(--gold);

    font-size: 0.72rem;
    font-weight: 600;

    letter-spacing: 0.16em;
    text-transform: uppercase;
}


/* ==============================
   HEADER
   ============================== */

.site-header {
    height: 74px;

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

    padding: 0 max(5vw, 28px);

    background: var(--white);
    border-bottom: 1px solid var(--line);

    position: sticky;
    top: 0;
    z-index: 10;
}

.brand {
    font-family: "Libre Baskerville", Georgia, serif;
    font-size: 1.05rem;
    font-weight: 700;
}

nav {
    display: flex;
    gap: 30px;
    font-size: 0.84rem;
}

nav a:hover,
.text-link:hover,
.socials a:hover {
    color: var(--gold);
}


/* ==============================
   PROFILE
   ============================== */

.profile {
    min-height: 360px;

    display: grid;
    grid-template-columns: 180px minmax(0, 620px);

    gap: 58px;
    align-items: center;

    padding: 52px max(7vw, 28px);

    background: var(--paper);
    border-bottom: 1px solid var(--line);
}

.profile-visual {
    width: 180px;
    height: 235px;

    position: relative;
    overflow: hidden;

    background:
        linear-gradient(
            155deg,
            transparent 0 30%,
            rgba(31, 48, 66, 0.9) 30.1% 30.8%,
            transparent 30.9%
        ),
        linear-gradient(
            135deg,
            #e9e8e2 0 38%,
            #cdd9dd 38.2% 68%,
            #e5a92f 68.2% 70%,
            #24384a 70.2% 100%
        );
}

.profile-image {
    width: 100%;
    height: 100%;

    display: block;

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

    position: absolute;
    inset: 0;
    z-index: 1;
}

.profile-image-placeholder {
    width: 100%;
    height: 100%;

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

    color: #ffffff;

    font-size: 0.62rem;
    font-weight: 600;

    letter-spacing: 0.14em;
    text-align: center;

    position: absolute;
    inset: 0;
    z-index: 1;

    background:
        linear-gradient(
            155deg,
            transparent 0 30%,
            rgba(31, 48, 66, 0.9) 30.1% 30.8%,
            transparent 30.9%
        ),
        linear-gradient(
            135deg,
            #e9e8e2 0 38%,
            #cdd9dd 38.2% 68%,
            #e5a92f 68.2% 70%,
            #24384a 70.2% 100%
        );
}

.profile-visual::after {
    content: "";

    position: absolute;
    inset: 12% 8%;

    border: 1px solid rgba(255, 255, 255, 0.6);

    transform: skewX(-7deg);
    z-index: 2;
}

.rail-line {
    height: 4px;

    position: absolute;
    left: 0;
    right: 0;
    bottom: 19%;

    background: var(--gold);
    z-index: 3;
}

.visual-label {
    position: absolute;
    right: 20px;
    bottom: 17px;

    color: #ffffff;

    font-size: 0.6rem;
    letter-spacing: 0.15em;

    z-index: 4;
}

.profile-copy {
    max-width: 620px;
}

.lede {
    max-width: 620px;
    color: #4f5a63;
}

.button {
    display: inline-flex;

    gap: 28px;
    margin-top: 18px;
    padding: 11px 17px;

    color: #ffffff;
    background: var(--ink);

    font-size: 0.82rem;
}

.button:hover {
    color: var(--ink);
    background: var(--gold);
}


/* ==============================
   GENERAL SECTIONS
   ============================== */

.section {
    padding: 95px max(7vw, 28px);
    border-top: 1px solid var(--line);
}

.section-body {
    color: var(--muted);
}

.section-intro {
    max-width: 650px;
    margin-bottom: 48px;
}

.text-link {
    display: inline-block;
    margin-top: 12px;

    color: var(--ink);

    font-size: 0.85rem;
    font-weight: 600;
}

.arrow {
    color: var(--gold);
}


/* ==============================
   ABOUT
   ============================== */

.about-wide {
    max-width: var(--max);
    margin: 0 auto;
}

.about-wide .section-body {
    max-width: none;

    display: grid;
    grid-template-columns: 1fr 1fr;

    gap: 7vw;
}


/* ==============================
   RESEARCH
   ============================== */

.research {
    background: var(--paper);
}

.research-grid {
    max-width: var(--max);
    margin: 0 auto;

    display: grid;
    grid-template-columns: repeat(3, 1fr);

    gap: 55px;
}

.research-card {
    padding-top: 18px;
    border-top: 1px solid var(--ink);
}

.research-card:hover h3 {
    color: var(--gold);
}

.number {
    color: var(--gold);

    font-size: 0.72rem;
    letter-spacing: 0.12em;
}

.research-grid p {
    color: var(--muted);
    font-size: 0.92rem;
}


/* ==============================
   PUBLICATIONS
   ============================== */

.publications {
    max-width: var(--max);
    margin: 0 auto;

    display: grid;
    grid-template-columns: 32% 1fr;

    gap: 8vw;
}

.pub-list a:not(.text-link) {
    display: grid;
    grid-template-columns: 70px 1fr 25px;

    gap: 18px;
    padding: 22px 0;

    border-bottom: 1px solid var(--line);
}

.pub-list a:first-child {
    border-top: 1px solid var(--line);
}

.pub-year {
    color: var(--gold);
    font-size: 0.8rem;
}

.pub-list strong {
    display: block;
    font-weight: 500;
}

.pub-list small {
    display: block;
    color: var(--muted);
}


/* ==============================
   BLOG
   ============================== */

.blog {
    max-width: var(--max);
    margin: 0 auto;

    background: var(--paper);

    display: grid;
    grid-template-columns: 32% 1fr;

    gap: 8vw;
}

.blog-list article {
    display: grid;
    grid-template-columns: 105px 1fr;

    gap: 20px;
    padding: 18px 0;

    border-bottom: 1px solid var(--line);
}

.blog-list time {
    color: var(--gold);
    font-size: 0.78rem;
}

.blog-list p {
    margin: 0;
}

.blog-list a:hover p {
    color: var(--gold);
}


/* ==============================
   INNER PAGES
   ============================== */

.page {
    max-width: 850px;
    margin: 0 auto;
    padding: 95px 28px;
}

.page-content {
    margin-top: 45px;
    color: #4f5a63;
}

.page-content h2,
.page-content h3 {
    margin-top: 2em;
    color: var(--ink);
}

.page-meta {
    color: var(--muted);
    font-size: 0.82rem;
}

.page-content a {
    text-decoration: underline;
    text-decoration-color: var(--gold);
    text-underline-offset: 3px;
}

.back {
    display: inline-block;
    margin-top: 50px;

    color: var(--gold);

    font-size: 0.82rem;
    font-weight: 600;
}


/* ==============================
   FOOTER
   ============================== */

footer {
    display: grid;
    grid-template-columns: 1fr 1fr;

    gap: 8vw;
    padding: 80px max(7vw, 28px);

    color: #f5f3eb;
    background: var(--ink);
}

footer .section-kicker {
    color: var(--gold-soft);
}

.footer-contact {
    color: #c8d0d4;
}

.footer-contact a {
    color: #ffffff;
}

.socials {
    display: flex;
    gap: 22px;
    margin-top: 25px;
    font-size: 0.75rem;
}


/* ==============================
   RESPONSIVE
   ============================== */

@media (max-width: 900px) {

    .profile {
        grid-template-columns: 180px 1fr;
        gap: 32px;
        padding: 45px 28px;
    }

}

@media (max-width: 800px) {

    nav {
        display: none;
    }

    .profile {
        grid-template-columns: 1fr;
        gap: 26px;
    }

    .profile-visual {
        width: 180px;
        height: 235px;
    }

    .about-wide .section-body,
    .publications,
    .blog,
    footer {
        grid-template-columns: 1fr;
    }

    .research-grid {
        grid-template-columns: 1fr;
        gap: 35px;
    }

    .section {
        padding: 70px 28px;
    }

    footer {
        gap: 30px;
    }

}

@media (max-width: 480px) {

    .profile-visual {
        width: 155px;
        height: 215px;
    }

    .pub-list a:not(.text-link) {
        grid-template-columns: 55px 1fr 20px;
        gap: 12px;
    }

    .blog-list article {
        grid-template-columns: 85px 1fr;
        gap: 14px;
    }

}