/* ==========================================================================
   Theme: dark "lab bench" with copper accent, engineering title-block motif.
   JetBrains Mono for data, Space Grotesk for display, IBM Plex Sans for body.
   ========================================================================== */

:root {
    --ink: #0E1116; /* page background */
    --panel: #161B22; /* card surface */
    --panel-2: #1B2230; /* raised cell */
    --line: #2A323D; /* hairline rules */
    --text: #E6E9EF; /* primary text */
    --muted: #8B97A7; /* secondary text */
    --copper: #D98A4E; /* accent */
    --copper-br: #F0A862; /* accent hover */
    --hyperlink-blue: #58A6FF; /* hyperlink primary text */
    --hyperlink-blue-hover: #79C0FF; /* hyperlink text hover */

    --maxw: 1120px;
    --gap: 1.5rem;

    --f-display: "Space Grotesk", system-ui, sans-serif;
    --f-body: "IBM Plex Sans", system-ui, sans-serif;
    --f-mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background-color: var(--ink);
    /* faint graph-paper grid, true to schematic/PCB layout work */
    background-image: linear-gradient(rgba(255, 255, 255, .022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .022) 1px, transparent 1px);
    background-size: 30px 30px;
    color: var(--text);
    font-family: var(--f-body);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--copper);
    text-decoration: none;
}

a:hover {
    color: var(--copper-br);
}

:focus-visible {
    outline: 2px solid var(--copper-br);
    outline-offset: 3px;
    border-radius: 2px;
}

.skip {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--copper);
    color: var(--ink);
    padding: .5rem .9rem;
    font-family: var(--f-mono);
    font-size: .85rem;
}

.skip:focus {
    left: .75rem;
    top: .75rem;
    z-index: 10;
}

/* ===================== Masthead ===================== */
.masthead {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 1.25rem 1.5rem 0;
}

.nav {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--line);
}

.nav__mark {
    font-family: var(--f-mono);
    font-size: .9rem;
    color: var(--muted);
    letter-spacing: .02em;
}

.nav__mark::before {
    content: "// ";
    color: var(--copper);
}

.nav__links {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav__links a {
    font-family: var(--f-mono);
    font-size: .82rem;
    color: var(--muted);
    letter-spacing: .02em;
}

.nav__links a:hover {
    color: var(--text);
}

/* Title block - the signature element */
.titleblock {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 0;
    margin: 2.5rem 0 3.5rem;
    border: 1px solid var(--line);
}

.titleblock__name {
    padding: 2rem 2rem 2.25rem;
    border-right: 1px solid var(--line);
}

.eyebrow {
    font-family: var(--f-mono);
    font-size: .72rem;
    text-transform: uppercase;
    letter-spacing: .22em;
    color: var(--copper);
}

.titleblock h1 {
    font-family: var(--f-display);
    font-weight: 700;
    font-size: clamp(2.4rem, 6vw, 3.8rem);
    line-height: 1.02;
    letter-spacing: -.02em;
    margin: .6rem 0 .9rem;
}

.lede {
    color: var(--muted);
    font-size: 1.02rem;
    max-width: 42ch;
    margin: 0;
}

.titleblock__meta {
    margin: 0;
    display: flex;
    flex-direction: column;
}

.titleblock__meta > div {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--line);
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.titleblock__meta > div:last-child {
    border-bottom: 0;
}

.titleblock__meta dt {
    font-family: var(--f-mono);
    font-size: .68rem;
    text-transform: uppercase;
    letter-spacing: .18em;
    color: var(--muted);
}

.titleblock__meta dd {
    margin: .35rem 0 0;
    font-family: var(--f-mono);
    font-size: .92rem;
    color: var(--text);
}

/* ===================== Sections ===================== */
.section {
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0 1.5rem 3.5rem;
}

.section__head {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.75rem;
}

.section__head h2 {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: 1.05rem;
    text-transform: uppercase;
    letter-spacing: .14em;
    margin: 0;
    white-space: nowrap;
}

.rule {
    flex: 1;
    height: 1px;
    background: var(--line);
}

/* ===================== Grid + cards ===================== */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--gap);
}

.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 6px;
    overflow: hidden; /* clip cover image to rounded corners */
    display: flex;
    flex-direction: column;
    transition: border-color .18s ease, transform .18s ease;
}

.card:hover {
    border-color: var(--copper);
    transform: translateY(-3px);
}

/* Cover image - uniform across every card */
.card__cover {
    margin: 0;
}

.card__cover img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-bottom: 1px solid var(--line);
}

.card__cover--video {
    aspect-ratio: 16 / 10; /* match your image covers */
}

.card__cover--video iframe {
    width: 100%;
    height: 100%;
    border: 0;
    border-bottom: 1px solid var(--line);
    display: block;
}

.card__body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex: 1; /* lets repos pin to the bottom */
}

.tag {
    align-self: flex-start;
    font-family: var(--f-mono);
    font-size: .68rem;
    text-transform: uppercase;
    letter-spacing: .16em;
    color: var(--copper);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: .25rem .7rem;
}

.card__body h3 {
    font-family: var(--f-display);
    font-weight: 600;
    font-size: 1.3rem;
    line-height: 1.2;
    margin: 0;
}

.card__desc {
    margin: 0;
    color: var(--text);
}

.card__note {
    margin: 0;
    padding: .7rem .9rem;
    background: var(--panel-2);
    border-left: 2px solid var(--copper);
    border-radius: 0 4px 4px 0;
    font-size: .9rem;
    color: var(--muted);
}

/* Spec list */
.specs {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.specs li {
    font-family: var(--f-mono);
    font-size: .78rem;
    color: var(--muted);
    background: var(--panel-2);
    border: 1px solid var(--line);
    border-radius: 4px;
    padding: .3rem .6rem;
}

/* Repo links */
.repos {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: .5rem;
    margin-top: auto; /* pin to bottom of card */
    padding-top: .25rem;
}

.repos a {
    color: var(--hyperlink-blue);
    font-family: var(--f-mono);
    font-size: .82rem;
    padding: .3rem .65rem;
    border: 1px solid var(--line);
    border-radius: 4px;
    background: var(--panel-2);
    transition: border-color .15s ease, color .15s ease;
}

.repos a:hover {
    color: var(--hyperlink-blue-hover);
    text-decoration-color: var(--hyperlink-blue-hover);
    border-color: var(--copper);
}

.repos a::before {
    content: "\203A\00a0";
    color: var(--hyperlink-blue);
}

/* ===================== Footer sheet ===================== */
.sheet {
    max-width: var(--maxw);
    margin: 1rem auto 0;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    border: 1px solid var(--line);
    border-radius: 6px 6px 0 0;
}

.sheet__cell {
    padding: 1rem 1.25rem;
    border-right: 1px solid var(--line);
    display: flex;
    flex-direction: column;
    gap: .25rem;
}

.sheet__cell:last-child {
    border-right: 0;
}

.sheet__k {
    font-family: var(--f-mono);
    font-size: .66rem;
    text-transform: uppercase;
    letter-spacing: .16em;
    color: var(--muted);
}

.sheet__v {
    font-family: var(--f-mono);
    font-size: .9rem;
    color: var(--text);
}

/* ===================== Responsive ===================== */
@media (max-width: 720px) {
    .titleblock {
        grid-template-columns: 1fr;
    }

    .titleblock__name {
        border-right: 0;
        border-bottom: 1px solid var(--line);
        padding: 1.5rem;
    }

    .titleblock__meta > div {
        padding: .9rem 1.5rem;
    }

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

    .sheet__cell {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .sheet__cell:last-child {
        border-bottom: 0;
    }
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    .card {
        transition: none;
    }

    .card:hover {
        transform: none;
    }
}