:root {
    --bg: #faf8f4;
    --card: #ffffff;
    --text: #1d1f1c;
    --muted: #6a6d66;
    --rule: #e6e2d9;
    --accent: #2f6b4f;
    --shadow: rgba(40, 36, 28, 0.28);
    --band: var(--bg);
    --band-alt: #efe9dd;
    --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
    --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #131513;
        --card: #1b1e1b;
        --text: #e9e7e2;
        --muted: #9a9d95;
        --rule: #2c302c;
        --accent: #8cc7a6;
        --shadow: rgba(0, 0, 0, 0.6);
        --band-alt: #202320;
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

main {
    max-width: 1040px;
    margin: 0 auto;
    padding: 72px 24px 80px;
}

a {
    color: var(--text);
    font-weight: 600;
    text-decoration: underline;
    text-decoration-color: var(--rule);
    text-decoration-thickness: 2px;
    text-underline-offset: 4px;
}

a:hover {
    text-decoration-color: var(--accent);
}

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

/* Header */

header {
    display: flex;
    align-items: center;
    gap: 28px;
}

.avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

h1 {
    margin: 0;
    font-family: var(--serif);
    font-size: clamp(1.9rem, 5vw, 2.7rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.tagline {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 0.98rem;
}

.pills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.pills a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 5px 13px 5px 11px;
    border: 1px solid var(--rule);
    border-radius: 999px;
    background: var(--card);
    font-size: 0.85rem;
    text-decoration: none;
    transition: border-color 0.15s, color 0.15s;
}

.pills svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    fill: currentColor;
}

.pills a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.bio {
    margin: 44px 0 0;
    line-height: 1.65;
}

.intro {
    margin: 52px 0 28px;
    font-family: var(--serif);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--muted);
}

/* Sections */

section {
    margin-top: 36px;
}

.section-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
}

h2 {
    margin: 0 0 14px;
    font-family: var(--serif);
    font-size: 1.3rem;
    font-weight: 400;
    font-style: italic;
    color: var(--accent);
}

/* Bands: each category sits on its own full-width strip, alternating light and dark cream */

.band {
    --fill: var(--band);
    margin-top: 0;
    padding: 36px 0 44px;
    background: var(--fill);
    box-shadow: 0 0 0 100vmax var(--fill);
    clip-path: inset(0 -100vmax);
}

.band:nth-child(even of .band) {
    --fill: var(--band-alt);
}

/* The last band runs to the bottom of the page */
main:has(> .band:last-child) {
    padding-bottom: 0;
}

.band:last-child {
    padding-bottom: 64px;
}

.pair section {
    margin-top: 0;
}

.more {
    color: var(--muted);
    font-size: 0.88rem;
    text-decoration: none;
    white-space: nowrap;
}

.more:hover {
    color: var(--accent);
}

.pair {
    display: grid;
    grid-template-columns: 1fr 1fr;
    column-gap: 24px;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.gallery.four {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* Side-by-side sections share rows (heading, optional lede, card), so the
   cards line up even when one lede runs longer than the other */
.pair section {
    display: grid;
    grid-row: span 3;
    grid-template-rows: subgrid;
}

.pair .gallery {
    grid-row: 3;
    grid-template-columns: 1fr;
}

.lede {
    margin: -4px 0 16px;
    color: var(--muted);
    font-size: 0.95rem;
    line-height: 1.55;
}

/* Software beyond the flagship cards: compact tiles with the package's logo */

.packages {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin-top: 24px;
}

/* The flexible first and last rows centre the name and description beside
   the logo when the logo is the taller of the two */
.pkg {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: 1fr auto auto 1fr;
    column-gap: 12px;
    padding: 8px 14px 8px 8px;
    border: 1px solid var(--rule);
    border-radius: 10px;
    background: var(--card);
    text-decoration: none;
    transition: border-color 0.15s, transform 0.2s ease, box-shadow 0.2s ease;
}

.pkg:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -14px var(--shadow);
}

/* Logos sit on a white chip so dark marks (Neuropsydia) survive dark mode;
   packages without a logo get a monogram in their language colour */
.logo {
    grid-row: 1 / -1;
    align-self: center;
    width: 68px;
    height: 68px;
    border-radius: 13px;
}

img.logo {
    padding: 2px;
    background: #fff;
    object-fit: contain;
}

.mono {
    display: grid;
    place-items: center;
    background: color-mix(in srgb, var(--lang) 16%, var(--card));
    color: color-mix(in srgb, var(--lang) 55%, var(--text));
    font-family: var(--serif);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.pkg strong {
    grid-area: 2 / 2;
    font-size: 0.95rem;
    font-weight: 600;
    overflow-wrap: break-word;
}

.pkg.r {
    --lang: #198ce7;
}

.pkg.py {
    --lang: #3572a5;
}

.pkg.jl {
    --lang: #a270ba;
}

.pkg.js {
    --lang: #f1e05a;
}

.pkg.qmd {
    --lang: #75aadb;
}

.pkg .desc {
    grid-area: 3 / 2;
    margin-top: 2px;
    color: var(--muted);
    font-size: 0.84rem;
    font-weight: 400;
    line-height: 1.45;
}

/* Cards */

.card {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border: 1px solid var(--rule);
    border-radius: 14px;
    background: var(--card);
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 16px 32px -16px var(--shadow);
}

.thumb {
    display: block;
    overflow: hidden;
    aspect-ratio: 16 / 9;
    border-bottom: 1px solid var(--rule);
}

.thumb img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.card:hover .thumb img {
    transform: scale(1.04);
}

.text {
    display: block;
    padding: 14px 18px 18px;
}

.text strong {
    display: block;
    font-size: 1.02rem;
    font-weight: 600;
}

.text span {
    display: block;
    margin-top: 3px;
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 400;
    line-height: 1.45;
}

@media (prefers-reduced-motion: reduce) {
    .card,
    .card:hover,
    .card:hover .thumb img,
    .pkg,
    .pkg:hover {
        transform: none;
        transition: none;
    }
}

/* Medium screens: the denser grids drop to two columns. The package tiles go
   first, as three columns only keep descriptions to two lines at full width. */

@media (max-width: 1040px) {
    .packages {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .gallery.four {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Narrow screens: one column, side-by-side cards */

@media (max-width: 720px) {
    main {
        padding: 40px 16px 56px;
    }

    header {
        gap: 18px;
        align-items: flex-start;
    }

    .avatar {
        width: 76px;
        height: 76px;
    }

    .bio {
        margin-top: 28px;
        font-size: 0.97rem;
    }

    .intro {
        margin-top: 36px;
        font-size: 1.12rem;
    }

    section {
        margin-top: 28px;
    }

    .pair,
    .gallery,
    .gallery.four,
    .packages {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .pair {
        gap: 24px;
    }

    .pair section {
        display: block;
        grid-row: auto;
    }

    .packages {
        gap: 8px;
        margin-top: 16px;
    }

    .pkg {
        padding: 8px 12px 8px 8px;
    }

    .band {
        padding: 28px 0 32px;
    }

    main > section .card {
        flex-direction: row;
        align-items: center;
    }

    main > section .thumb {
        flex: 0 0 40%;
        align-self: stretch;
        border-bottom: 0;
        border-right: 1px solid var(--rule);
    }

    .text {
        padding: 10px 14px;
    }

    .text strong {
        font-size: 0.98rem;
    }

    .text span {
        font-size: 0.84rem;
    }
}