/* Cold Development. Tokens and rules: see DESIGN.md. */

@font-face {
    font-family: "Onest";
    src: url("../fonts/onest-latin-wght-normal.woff2") format("woff2");
    font-weight: 100 900;
    font-display: swap;
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
    font-family: "Onest";
    src: url("../fonts/onest-latin-ext-wght-normal.woff2") format("woff2");
    font-weight: 100 900;
    font-display: swap;
    unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
    --bg: #0a1220;
    --bg-raise: #0f1a2c;
    --bg-hover: #13213a;
    --line: rgba(160, 196, 235, 0.13);
    --line-strong: rgba(160, 196, 235, 0.24);
    --text: #eaf2fb;
    --muted: #93a7bf;
    --ice: #9fd8ff;
    --ice-deep: #4fa9f5;

    --font: "Onest", system-ui, sans-serif;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-press: cubic-bezier(0.3, 0.7, 0.4, 1);

    --wrap: 1180px;
    --gutter: clamp(16px, 4vw, 40px);
    color-scheme: dark;
}

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

html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
    scroll-behavior: smooth;
    scrollbar-color: #2a3c57 var(--bg);
}

body {
    margin: 0;
    background:
        radial-gradient(60rem 40rem at 78% -8rem, rgba(79, 169, 245, 0.16), transparent 70%),
        radial-gradient(40rem 30rem at -10% 30rem, rgba(159, 216, 255, 0.05), transparent 70%),
        var(--bg);
    background-repeat: no-repeat;
    color: var(--text);
    font-family: var(--font);
    font-size: 1.0625rem;
    line-height: 1.6;
    font-weight: 380;
    -webkit-font-smoothing: antialiased;
}

::selection { background: var(--ice); color: var(--bg); }

a { color: inherit; }
img { display: block; }
h1, h2, h3 { margin: 0; }

:focus-visible {
    outline: 2px solid var(--ice);
    outline-offset: 3px;
    border-radius: 6px;
}

.wrap {
    width: 100%;
    max-width: calc(var(--wrap) + var(--gutter) * 2);
    margin-inline: auto;
    padding-inline: var(--gutter);
}

.skip {
    position: absolute;
    left: var(--gutter);
    top: 12px;
    z-index: 10;
    padding: 8px 14px;
    background: var(--text);
    color: var(--bg);
    border-radius: 8px;
    transform: translateY(-160%);
    transition: transform 160ms var(--ease-out);
}
.skip:focus-visible { transform: none; }

.nowrap { white-space: nowrap; }

/* ---------- nav ---------- */

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-top: max(22px, env(safe-area-inset-top));
    padding-bottom: 22px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-weight: 620;
    letter-spacing: -0.01em;
    text-decoration: none;
}
.brand img { width: 30px; height: 30px; }

.nav__links { display: flex; gap: 4px; }
.nav__links a {
    padding: 8px 12px;
    border-radius: 8px;
    color: var(--muted);
    font-size: 0.9375rem;
    text-decoration: none;
    transition: color 150ms var(--ease-out), background-color 150ms var(--ease-out);
}
@media (hover: hover) {
    .nav__links a:hover { color: var(--text); background: var(--bg-raise); }
}

/* ---------- hero ---------- */

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: center;
    gap: 40px;
    padding-top: clamp(32px, 8vh, 96px);
    padding-bottom: clamp(56px, 10vh, 120px);
}

.hero__by {
    margin: 0 0 20px;
    color: var(--muted);
    font-size: 0.9375rem;
}
.hero__clock {
    margin-left: 6px;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

.hero__title {
    font-size: clamp(3.25rem, 8.2vw, 6rem);
    line-height: 0.95;
    font-weight: 720;
    letter-spacing: -0.045em;
    text-wrap: balance;
}
.zz {
    display: inline-block;
    font-size: 0.4em;
    vertical-align: 1em;
    margin: 0 0.04em;
    letter-spacing: 0;
}

.hero__lede {
    max-width: 34rem;
    margin: 28px 0 36px;
    color: var(--muted);
    font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
    line-height: 1.55;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 12px;
    font-weight: 560;
    font-size: 1rem;
    text-decoration: none;
    transition: background-color 160ms var(--ease-out), border-color 160ms var(--ease-out), transform 120ms var(--ease-press);
}
.btn:active { transform: scale(0.97); }
.btn--primary {
    background: var(--text);
    color: var(--bg);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.5) inset, 0 8px 20px -10px rgba(0, 0, 0, 0.8);
}
.btn--ghost {
    border: 1px solid var(--line-strong);
    color: var(--text);
}
@media (hover: hover) {
    .btn--primary:hover { background: #fff; }
    .btn--ghost:hover { background: var(--bg-raise); border-color: rgba(160, 196, 235, 0.38); }
}
.btn__icon { width: 20px; height: 20px; }
.btn__icon--fill { fill: currentColor; }

/* the snowflake */
.flake { margin: 0; justify-self: center; width: min(100%, 460px); }
.flake__stage {
    display: block;
    width: 100%;
    aspect-ratio: 1;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: radial-gradient(closest-side, rgba(79, 169, 245, 0.18), rgba(79, 169, 245, 0.04) 70%, transparent);
    cursor: pointer;
    transition: transform 140ms var(--ease-press);
}
.flake__stage:active { transform: scale(0.98); }
.flake__svg { display: block; width: 100%; height: 100%; overflow: visible; }

.flake__art path {
    fill: none;
    stroke: url(#ice);
    stroke-linecap: round;
    stroke-linejoin: round;
}
.flake__art .is-old {
    opacity: 0;
    transform: scale(0.94);
    filter: blur(4px);
    transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out), filter 220ms var(--ease-out);
}

@media (prefers-reduced-motion: no-preference) {
    .js .flake__art path {
        stroke-dasharray: 1;
        stroke-dashoffset: 1;
        animation: draw 900ms var(--ease-out) calc(var(--d, 0) * 1ms) forwards;
    }
}
@keyframes draw { to { stroke-dashoffset: 0; } }

.flake__caption {
    margin-top: 12px;
    color: var(--muted);
    font-size: 0.875rem;
    text-align: center;
}

/* ---------- sections ---------- */

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    font-weight: 660;
    letter-spacing: -0.03em;
    line-height: 1.15;
}

.work, .projects, .links {
    padding-top: clamp(56px, 9vh, 104px);
    padding-bottom: clamp(56px, 9vh, 104px);
    border-top: 1px solid var(--line);
}

/* what I make */
.work {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr);
    gap: 40px;
}
.work__list { display: grid; gap: 40px; }
.work__item {
    display: grid;
    grid-template-columns: minmax(0, 12rem) minmax(0, 1fr);
    gap: 8px 32px;
}
.work__item h3 {
    font-size: 1.25rem;
    font-weight: 620;
    letter-spacing: -0.015em;
    line-height: 1.35;
}
.work__item p { margin: 0; color: var(--muted); max-width: 38rem; }
.work__item .work__links {
    grid-column: 2;
    display: flex;
    flex-wrap: wrap;
    gap: 6px 20px;
}
.work__links a, .text-link {
    color: var(--ice);
    font-weight: 520;
    text-decoration: underline;
    text-decoration-color: rgba(159, 216, 255, 0.35);
    text-underline-offset: 4px;
    transition: text-decoration-color 150ms var(--ease-out);
}
@media (hover: hover) {
    .work__links a:hover, .text-link:hover { text-decoration-color: var(--ice); }
}

/* recently updated repos */
.projects__head {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    justify-content: space-between;
    gap: 8px 24px;
    margin-bottom: 28px;
}

.repos {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--line);
}
.repo { border-bottom: 1px solid var(--line); }
.repo a {
    display: grid;
    grid-template-columns: minmax(0, 15rem) minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 6px 32px;
    padding: 20px 12px;
    margin-inline: -12px;
    border-radius: 10px;
    text-decoration: none;
    transition: background-color 150ms var(--ease-out);
}
@media (hover: hover) {
    .repo a:hover { background: var(--bg-raise); }
}
.repo__name { font-weight: 600; letter-spacing: -0.01em; overflow-wrap: anywhere; }
.repo__desc { color: var(--muted); }
.repo__facts {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--muted);
    font-size: 0.875rem;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}
.repo__lang { display: inline-flex; align-items: center; gap: 6px; }
.repo__lang::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--lang, var(--muted));
}
.repo__stars { display: inline-flex; align-items: center; gap: 4px; }
.repo__stars svg { width: 14px; height: 14px; fill: currentColor; }

.repo--skeleton {
    display: grid;
    grid-template-columns: 15rem 1fr;
    gap: 32px;
    padding: 26px 0;
}
.repo--skeleton span {
    height: 12px;
    border-radius: 6px;
    background: var(--bg-raise);
}
.repo--skeleton span:last-child { max-width: 28rem; }

.repos__note { padding: 20px 0; color: var(--muted); }

/* find me */
.links { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2.2fr); gap: 40px; }
.rows { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.rows li { border-bottom: 1px solid var(--line); }
.row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto 24px;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding: 22px 12px;
    margin: 0;
    border: 0;
    border-radius: 10px;
    background: none;
    color: inherit;
    font: inherit;
    text-align: left;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 150ms var(--ease-out);
}
.row__name {
    font-size: clamp(1.25rem, 2.2vw, 1.625rem);
    font-weight: 600;
    letter-spacing: -0.02em;
}
.row__meta { color: var(--muted); font-size: 0.9375rem; }
.row__arrow {
    width: 22px;
    height: 22px;
    color: var(--muted);
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: transform 180ms var(--ease-out), color 150ms var(--ease-out);
}
@media (hover: hover) {
    .row:hover { background: var(--bg-raise); }
    .row:hover .row__arrow { color: var(--ice); }
    a.row:hover .row__arrow { transform: translate(2px, -2px); }
}
.row:active { background: var(--bg-hover); }

.row__swap { position: relative; display: grid; place-items: center; }
.row__swap svg {
    grid-area: 1 / 1;
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out), filter 180ms var(--ease-out);
}
.row--copy .i-check { opacity: 0; transform: scale(0.8); filter: blur(3px); }
.row--copy.is-copied .i-copy { opacity: 0; transform: scale(0.8); filter: blur(3px); }
.row--copy.is-copied .i-check { opacity: 1; transform: none; filter: none; }
.row--copy.is-copied .row__swap { color: var(--ice); }

/* ---------- footer ---------- */

.foot {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px 24px;
    padding-top: 32px;
    padding-bottom: max(32px, env(safe-area-inset-bottom));
    border-top: 1px solid var(--line);
}
.badges { display: flex; flex-wrap: wrap; gap: 8px; }
.badges a { display: block; border-radius: 2px; transition: transform 120ms var(--ease-press); }
.badges a:active { transform: scale(0.96); }
.badges img { image-rendering: pixelated; }
.badges__icon img { width: 31px; height: 31px; image-rendering: auto; }
.foot__credit { margin: 0; color: var(--muted); font-size: 0.875rem; }
.hash, .hash a { color: var(--text); font-variant-numeric: tabular-nums; text-underline-offset: 3px; }

/* ---------- responsive ---------- */

@media (max-width: 900px) {
    .hero { grid-template-columns: 1fr; }
    .flake { width: min(80%, 340px); }
    .work, .links { grid-template-columns: 1fr; gap: 28px; }
}

@media (max-width: 640px) {
    .nav__links { display: none; }
    .flake { width: min(72%, 260px); }
    .work__item { grid-template-columns: 1fr; }
    .work__item .work__links { grid-column: 1; margin-top: 4px; }
    .repo a { grid-template-columns: 1fr; gap: 4px; }
    .repo__facts { margin-top: 6px; }
    .repo--skeleton { grid-template-columns: 1fr; gap: 12px; }
    .row { grid-template-columns: minmax(0, 1fr) 24px; gap: 4px 16px; }
    .row__meta { grid-row: 2; grid-column: 1; }
    .row__arrow { grid-row: 1 / 3; grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: 0.01ms !important; }
}