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

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
p,
dl,
dd,
figure {
    margin: 0;
}

button,
input {
    font: inherit;
}

button {
    color: inherit;
}

body {
    min-height: 100vh;
}


/* ============================================================
   VARIABLES
============================================================ */

:root {
    --paper: #f6f4ed;
    --paper-deep: #efede4;
    --paper-raised: #faf9f5;

    --ink: #252622;
    --ink-soft: #62645d;
    --ink-faint: #85877f;

    --rule: #d8d6cc;
    --rule-dark: #bdbcb3;

    --accent: #cbd8c5;
    --accent-soft: #e8eee4;
    --accent-dark: #65735f;

    --blue: #aebfc8;
    --rose: #d1b5b0;
    --yellow: #d9cca3;
    --purple: #c4b8ca;
    --sage: #aebda8;
    --grey: #9ea19a;

    --sans:
        Inter,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Helvetica,
        Arial,
        sans-serif;

    --mono:
        "IBM Plex Mono",
        "SFMono-Regular",
        Consolas,
        "Liberation Mono",
        monospace;

    --content-width: 1120px;
}


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

body {
    background: var(--paper);
    color: var(--ink);

    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.65;

    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
}

.td-none {
    text-decoration: none;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent-dark);
    outline-offset: 4px;
}

::selection {
    background: var(--accent);
    color: var(--ink);
}


/* ============================================================
   LAYOUT
============================================================ */

.container {
    width: min(
        calc(100% - 48px),
        var(--content-width)
    );

    margin: 0 auto;
}

.section {
    padding: 88px 0;
}

.section-bordered {
    border-top: 1px solid var(--rule);
}


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

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;

    background: rgba(246, 244, 237, 0.97);
    border-bottom: 1px solid var(--rule);
}

.header-inner {
    min-height: 64px;

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

.site-name {
    font-weight: 650;
    letter-spacing: -0.02em;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 24px;

    font-family: var(--mono);
    font-size: 11px;
}

.site-nav a {
    color: var(--ink-soft);
}

.site-nav a:hover {
    color: var(--ink);
}


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

.eyebrow,
.section-label,
.project-type,
.project-year,
.project-details span,
.timeline-date,
.experiment-stats span {
    font-family: var(--mono);
    text-transform: uppercase;
    letter-spacing: 0.075em;
}

.eyebrow,
.section-label,
.project-type,
.project-year,
.timeline-date {
    font-size: 11px;
}

.eyebrow,
.section-label,
.project-type,
.timeline-date {
    color: var(--ink-soft);
}


/* ============================================================
   INTRO
============================================================ */

.intro {
    padding-top: 110px;
    padding-bottom: 105px;
}

.intro h1 {
    max-width: 850px;

    font-size: clamp(40px, 5.3vw, 67px);
    line-height: 1.04;
    letter-spacing: -0.052em;
    font-weight: 520;
}

.intro-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(270px, 0.75fr);
    gap: 100px;

    margin-top: 20px;
}

.intro-copy {
    max-width: 670px;
}

.intro-copy p:first-of-type {
    margin-top: 38px;
}

.intro-copy p {
    font-size: 18px;
    line-height: 1.7;
}

.intro-copy p + p {
    margin-top: 22px;
}

.current {
    border-top: 1px solid var(--ink);
    padding-top: 20px;
}

.intro-side {
    display: flex;
    flex-direction: column;
    align-items: stretch;
}

.intro-headshot {
    display: block;

    width: clamp(118px, 13vw, 176px);
    height: clamp(118px, 13vw, 176px);

    margin-bottom: 38px;
    margin-left: auto;

    border: 1px solid var(--rule-dark);
    border-radius: 50%;

    background: var(--paper-raised);
    object-fit: cover;
}

.fact-list {
    margin-top: 24px;
}

.fact-list > div {
    display: grid;
    grid-template-columns: 82px 1fr;
    column-gap: 12px;
    row-gap: 6px;

    padding: 12px 0;

    border-top: 1px solid var(--rule);
}

.fact-list > div:first-child {
    border-top: 0;
}

.fact-list dt {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
}

.fact-list dd {
    font-size: 14px;
    line-height: 1.45;
}

.fact-list dd + dd {
    grid-column: 2;
}

.section-heading {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 30px;

    margin-bottom: 54px;
}

.section-title {
    margin-bottom: 10px;

    font-size: 34px;
    line-height: 1.15;
    letter-spacing: -0.04em;
    font-weight: 540;
}

.section-description {
    max-width: 620px;

    color: var(--ink-soft);
    font-size: 14px;
}

/* about area */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 90px;
}

.about-copy {
    max-width: 600px;
}

.about-copy p {
    font-size: 17px;
}

.about-copy p + p {
    margin-top: 22px;
}

.skills {
    border-top: 1px solid var(--ink);
}

.skill-group {
    padding: 18px 0;
    border-bottom: 1px solid var(--rule);
}

.skill-group h3 {
    margin-bottom: 5px;

    font-family: var(--mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    font-weight: 400;
    color: var(--ink-faint);
}

.skill-group p {
    font-size: 13px;
    line-height: 1.5;
}


/* experience timeline */
.timeline {
    border-top: 1px solid var(--ink);
}

.timeline-row {
    display: grid;
    grid-template-columns: 180px 1fr;

    padding: 23px 0;

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

.timeline-row h3 {
    font-size: 17px;
    font-weight: 560;
}

.timeline-row p {
    margin-top: 2px;

    color: var(--ink-soft);
    font-size: 14px;
}


/* lab container, buttons, etc. experiment-specific styles moved to ./lab.css */
.lab-shell {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 54px;

    align-items: start;
}

.lab-index {
    position: sticky;
    top: 90px;

    border-top: 1px solid var(--ink);
}

.lab-index-item {
    width: 100%;

    display: grid;
    grid-template-columns: 30px 1fr;
    gap: 8px;

    padding: 15px 0;

    border: 0;
    border-bottom: 1px solid var(--rule);

    background: transparent;

    text-align: left;
    cursor: pointer;
}

.lab-index-item:hover strong {
    color: var(--accent-dark);
}

.lab-index-item.active {
    background: var(--accent-soft);
    padding-left: 10px;
    padding-right: 10px;
}

.lab-index-number {
    padding-top: 2px;

    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-faint);
}

.lab-index-item strong {
    display: block;

    font-size: 13px;
    line-height: 1.3;
    font-weight: 600;
}

.lab-index-item small {
    display: block;

    margin-top: 3px;

    font-family: var(--mono);
    font-size: 9px;
    line-height: 1.4;
    color: var(--ink-faint);
}


.lab-experiment {
    display: none;
}

.lab-experiment.active {
    display: block;
}

.experiment-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 30px;

    padding-top: 16px;

    border-top: 1px solid var(--ink);
}

.experiment-header h3 {
    max-width: 680px;

    margin-top: 7px;

    font-size: 30px;
    line-height: 1.15;
    letter-spacing: -0.038em;
    font-weight: 550;
}

.experiment-copy {
    max-width: 740px;

    margin-top: 22px;

    color: var(--ink-soft);
    font-size: 14px;
}

.formula {
    display: block;

    margin: 13px 0;

    font-family: var(--mono);
    font-size: 12px;
    color: var(--ink);
}
.experiment-controls {
    display: flex;
    align-items: flex-end;
    flex-wrap: wrap;
    gap: 12px;

    margin-top: 28px;
    margin-bottom: 21px;
}

.experiment-controls-two {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.control {
    min-width: 220px;

    display: grid;
    grid-template-columns: auto minmax(100px, 1fr) 38px;
    align-items: center;
    gap: 11px;

    padding: 10px 12px;

    border: 1px solid var(--rule);

    background: var(--paper-raised);
}

.control-wide {
    flex: 1 1 420px;
}

.control span {
    font-family: var(--mono);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-soft);
}

.control output {
    text-align: right;

    font-family: var(--mono);
    font-size: 12px;
}

input[type="range"] {
    width: 100%;

    appearance: none;

    height: 2px;

    border: 0;

    background: var(--rule-dark);
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;

    width: 15px;
    height: 15px;

    border: 1px solid var(--accent-dark);
    border-radius: 50%;

    background: var(--accent);
    cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
    width: 15px;
    height: 15px;

    border: 1px solid var(--accent-dark);
    border-radius: 50%;

    background: var(--accent);
    cursor: pointer;
}

.small-button {
    min-height: 39px;

    padding: 0 13px;

    border: 1px solid var(--rule-dark);

    background: transparent;

    font-family: var(--mono);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.055em;

    cursor: pointer;
}

.small-button:hover {
    background: var(--paper-deep);
}

.small-button.strong {
    background: var(--accent);
    border-color: var(--accent-dark);
}

.small-button.strong:hover {
    background: var(--accent-soft);
}
.experiment-canvas {
    display: block;

    width: 100%;
    height: auto;

    aspect-ratio: 760 / 430;

    border: 1px solid var(--rule);

    background: var(--paper-raised);

    cursor: default;
}

#kmeans-canvas {
    cursor: crosshair;
}
.experiment-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);

    margin-top: 13px;

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

.experiment-stats > div {
    padding: 14px 13px;
}

.experiment-stats > div + div {
    border-left: 1px solid var(--rule);
}

.experiment-stats span {
    display: block;

    margin-bottom: 5px;

    font-size: 8px;
    color: var(--ink-faint);
}

.experiment-stats strong {
    font-family: var(--mono);
    font-size: 15px;
    font-weight: 500;
}
.experiment-note {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 20px;

    margin-top: 22px;

    padding: 16px 18px;

    border-left: 2px solid var(--accent-dark);

    background: var(--accent-soft);
}

.experiment-note > span {
    font-family: var(--mono);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-dark);
}

.experiment-note p {
    font-size: 12px;
    line-height: 1.6;
    color: var(--ink-soft);
}


/* project area */
.project {
    display: grid;
    grid-template-columns: 80px minmax(0, 1fr);
    gap: 24px;

    padding: 38px 0 44px;

    border-top: 1px solid var(--rule);
}

.project:first-of-type {
    border-top-color: var(--ink);
}

.project-number {
    padding-top: 5px;

    font-family: var(--mono);
    font-size: 11px;
    color: var(--ink-faint);
}

.project-main {
    max-width: 900px;
}

.project-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 32px;
}

.project-heading h2 {
    margin-top: 6px;

    font-size: 29px;
    line-height: 1.2;
    letter-spacing: -0.035em;
    font-weight: 560;
}

.project-year {
    flex: 0 0 auto;

    padding-top: 5px;

    color: var(--ink-faint);
}

.project-summary {
    max-width: 760px;

    margin-top: 21px;

    font-size: 16px;
    color: var(--ink-soft);
}

.project-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;

    margin-top: 30px;
}

.project-details > div {
    border-top: 1px solid var(--rule);
    padding-top: 10px;
}

.project-details span {
    display: block;

    margin-bottom: 6px;

    font-size: 10px;
    color: var(--ink-faint);
}

.project-details p {
    font-size: 13px;
    line-height: 1.5;
}

.project-links {
    display: flex;
    gap: 22px;

    margin-top: 26px;
}

.project-links a,
.contact-links a {
    text-decoration: none;
    display: inline-block;

    font-family: var(--mono);
    font-size: 11px;

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

.project-links a:hover,
.contact-links a:hover {
    border-bottom-color: var(--ink);
}

.project-note {
    margin-top: 22px;

    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-faint);
}


/* contact */
.contact h2 {
    margin-top: 18px;

    font-size: 37px;
    letter-spacing: -0.04em;
    font-weight: 540;
}

.contact > .container > p:not(.section-label) {
    max-width: 600px;

    margin-top: 14px;

    color: var(--ink-soft);
}

.contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 26px;

    margin-top: 32px;
}


/* footer */
.site-footer {
    padding: 24px 0 34px;

    border-top: 1px solid var(--rule);

    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-faint);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
}


/* media qries */
@media (max-width: 900px) {

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

    .lab-index {
        position: static;

        display: grid;
        grid-template-columns: repeat(5, 1fr);
    }

    .lab-index-item {
        display: block;

        padding: 12px 8px;

        border-right: 1px solid var(--rule);
    }

    .lab-index-number {
        display: block;

        margin-bottom: 4px;
    }

    .lab-index-item small {
        display: none;
    }

}


@media (max-width: 850px) {

    .section {
        padding: 68px 0;
    }

    .intro {
        padding-top: 78px;
    }

    .intro-grid,
    .about-grid {
        grid-template-columns: 1fr;
        gap: 52px;
    }

    .intro-headshot {
        width: 132px;
        height: 132px;
        margin-bottom: 28px;
        margin-left: 0;
    }

    .project-details {
        grid-template-columns: 1fr;
    }

}


@media (max-width: 700px) {

    .site-nav a:nth-child(2),
    .site-nav a:nth-child(4) {
        display: none;
    }

    .experiment-header {
        display: block;
    }

    .experiment-header .small-button {
        margin-top: 16px;
    }

    .experiment-controls-two {
        grid-template-columns: 1fr;
    }

    .experiment-stats {
        grid-template-columns: 1fr;
    }

    .experiment-stats > div + div {
        border-left: 0;
        border-top: 1px solid var(--rule);
    }

}


@media (max-width: 620px) {

    .container {
        width: min(
            calc(100% - 30px),
            var(--content-width)
        );
    }

    .header-inner {
        min-height: 58px;
    }

    .site-nav {
        gap: 13px;
    }

    .intro h1 {
        font-size: 39px;
    }

    .intro-grid {
        margin-top: 48px;
    }

    .section-heading {
        grid-template-columns: 1fr;
        gap: 12px;

        margin-bottom: 38px;
    }

    .lab-index {
        grid-template-columns: repeat(3, 1fr);
    }

    .experiment-header h3 {
        font-size: 25px;
    }

    .control {
        width: 100%;
        min-width: 0;
    }

    .experiment-note {
        grid-template-columns: 1fr;
        gap: 6px;
    }

    .project {
        grid-template-columns: 38px minmax(0, 1fr);
        gap: 12px;
    }

    .project-heading {
        display: block;
    }

    .project-year {
        display: block;

        margin-top: 12px;
    }

    .project-heading h2 {
        font-size: 24px;
    }

    .project-links {
        flex-direction: column;
        align-items: flex-start;
        gap: 9px;
    }

    .timeline-row {
        grid-template-columns: 100px 1fr;
    }

}