@layer reset, root, template, page;

:root {
    --black: 0, 0, 0;
    --sub-dk-gray: 16, 16, 16;
    --dk-gray: 32, 32, 32;
    --super-dk-gray: 80, 80, 80;
    --mid-gray: 128, 128, 128;
    --sub-lt-gray: 175, 175, 175;
    --lt-gray: 223, 223, 223;
    --super-lt-gray: 240, 240, 240;
    --white: 255, 255, 255;

    --lt-blue: 69, 212, 243;
    --mid-blue: 26, 169, 239;
    --dk-blue: 63, 46, 231;
    --purple: 161, 49, 232;
    --lilac: 187, 121, 245;

    --site-nav-link-color: rgb(var(--mid-blue));

    --separator-color: rgb(var(--lt-gray));
    --header-border-color: var(--separator-color);
    --footer-border-color: var(--separator-color);

    --box-shadow-color: rgba(var(--lt-gray), 0.8);
    --header-box-shadow-color: var(--box-shadow-color);

    --font-family-body: Verdana, Helvetica, sans-serif;
    --font-family-monospace: "Courier New", Courier, monospace;
    --font-family-heading: Museo_Slab, Tahoma, sans-serif;
    --font-family-site-heading: Museo_Slab, Tahoma, sans-serif;
    --font-size-min: 6px;
    --font-size-max: 8px;

    --body-font-size: 2rem;
    --body-item-spacing: 1em;
    --body-line-height: 1.5;
    --body-header-line-height: 1.1;
    --body-code-background-color: rgb(var(--super-lt-gray));

    --heading-color: rgb(var(--black));

    --html-background-color: rgb(var(--white));
    --html-color: rgba(var(--black), 0.8);

    --platter-background-color: rgba(var(--white), var(--platter-background-opacity));
    --platter-background-opacity: 0.6;
    --platter-backdrop-filter: blur(10px);

    --content-width: 80rem;

    --transition-duration: 0.7s;

    --social-menu-padding: 1rem;
    --menu-icon-size: 20px;
    --twitter-icon: url(/icons/twitter.svg);
    --github-icon: url(/icons/github.svg);
    --instagram-icon: url(/icons/instagram.svg);
    --rss-icon: url(/icons/rss.svg);
}
@media (prefers-color-scheme: dark) {
    :root {
        --separator-color: rgb(var(--dk-gray));
        --box-shadow-color: rgba(var(--dk-gray), 0.8);
        --body-code-background-color: rgb(var(--dk-gray));

        --heading-color: rgb(var(--white));

        --html-background-color: rgb(var(--black));
        --html-color: rgba(var(--white), 0.8);

        --platter-background-color: rgba(var(--black), var(--platter-background-opacity));
        --platter-backdrop-filter: brightness(0.66) blur(10px);

        --twitter-icon: url(/icons/twitter-dark.svg);
        --github-icon: url(/icons/github-dark.svg);
        --instagram-icon: url(/icons/instagram-dark.svg);
        --rss-icon: url(/icons/rss-dark.svg);
    }
}

@layer reset {
    * { box-sizing: border-box; }

    body, button, h1, h2, h3, h4, h5, h6, input, ol, ul, p, pre, textarea {
        padding: 0; margin: 0;
    }

    table {
        border-spacing: 0;
        border-collapse: collapse;
    }

    button,
    input,
    textarea {
        font: inherit;
        background: transparent;
        border: 0;
        outline: 0;
        -webkit-appearance: none;
    }

    button,
    input[type='button'],
    input[type='submit'] {
        cursor: pointer;
    }

    input:-webkit-autofill,
    textarea:-webkit-autofill {
        box-shadow: 0 0 0 6rem var(--white) inset;
    }
}

a {
    color: rgb(var(--mid-blue));
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
    text-underline-offset: 0.12em;
}
a:visited { color: none; }

blockquote {
    border-inline-start: 4px solid var(--separator-color);
    padding-inline-start: 2rem;
    margin-inline-start: 2rem;
}

body {
    font-size: var(--body-font-size);
    line-height: var(--body-line-height);
}

code {
    background-color: var(--body-code-background-color);
    border-radius: 0.25rem;
    font-family: var(--font-family-monospace);
    display: inline-block;
    padding-inline: 0.6rem;
}

figcaption {
    font-size: 75%;
    line-height: var(--body-line-height);
    margin-block-start: 0.2em;
    text-align: center;
}

figure {
    border-radius: 6px;
    display: inline-block;
    line-height: 0;
    margin: 0;
    margin-block: 0 var(--body-item-spacing);
    margin-inline: 0;
    overflow: hidden;
    max-width: var(--content-width);
    width: 100%;
}

figure.bordered {
    padding: 0.5rem;
    border: 2px solid #eee;
}

figure a,
figure a:hover {
    border: 0;
}

figure img {
    border-radius: 6px;
    height: auto;
    max-width: var(--content-width);
    width: 100%;
}

figure svg {
    width: 100%;
    height: auto;
}

figure .youtube {
    border-radius: 6px;
    line-height: 1;
    overflow: hidden;
    max-width: var(--content-width);
    width: 100%;
}

footer.site {
    align-items: center;
    display: flex;
    flex-direction: column;
    font-size: 1.6rem;
    margin-block-start: 2rem;
    text-align: center;
}

footer.site > div {
    border-top: 1px solid var(--footer-border-color);
    padding-block-start: 2rem;
    max-width: var(--content-width);
    width: 100%;
}

footer.site ul {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
}

footer.site .slogans li {
    margin-inline-start: 0.5em;
}

footer.site p {
    margin: 0;
}

footer.site p + p {
    margin-top: 0.25rem;
}

@media (max-width: 740px) {
    footer.site .slogans span {
        white-space: nowrap;
    }
}

h1, h2, h3, h4, h5, h6 {
    color: var(--heading-color);
    font-family: var(--font-family-heading);
    font-weight: 600;
    margin-block: 3.5rem 1rem;
    letter-spacing: 0.08em;
    line-height: var(--body-header-line-height);
}

h1:first-child, h2:first-child, h3:first-child,
h4:first-child, h5:first-child, h6:first-child {
    margin-block-start: 0;
}

h1.site {
    color: rgb(var(--mid-blue));
    font-size: 2.5em;
}
@supports (background-clip: text) {
    h1.site {
        background:
            radial-gradient(circle at 20% 70%, rgb(var(--purple)), transparent 40%),
            radial-gradient(circle at 30% 30%, rgb(var(--lt-blue)), rgb(var(--mid-blue)) 20%, transparent 80%),
            radial-gradient(ellipse at 95% 20%, rgb(var(--dk-blue)), rgb(var(--mid-blue)) 70%, transparent 80%),
            radial-gradient(circle at 100% 100%, rgb(var(--purple)), rgb(var(--lilac)) 100%),
            radial-gradient(circle at 45% 100%, rgb(var(--lilac)), rgb(var(--purple)) 60%),
            radial-gradient(ellipse at 50% 50%, rgb(var(--dk-blue)), transparent 80%);
        -webkit-background-clip: text;
        background-clip: text;
        color: transparent;
    }
}

h1.site * { color: inherit; }
h1.site a:hover { text-decoration: none; }

header.site {
    display: flex;
    left: 0;
    position: fixed;
    top: 0;
    visibility: hidden;
    width: 100%;
    z-index: 10000;
}
header.site.visible { visibility: visible; }
header.site.sticky { position: sticky; }
header.site.animated {
    animation: site-header-slide-in var(--transition-duration) ease-out;
}
@keyframes site-header-slide-in {
    from {
        top: -200px;
    }
    to {
        top: 0;
    }
}

header.site h1 {
    font-family: var(--font-family-site-heading);
    font-size: 2em;
    margin: 0;
}

header.site .grid {
    align-items: baseline;
    display: grid;
    gap: 0 0.5em;
    grid-template-columns: max-content auto max-content;
    grid-template-areas:
        "title menu social";
    max-width: var(--content-width);
    width: var(--content-width);
}
@media (max-width: 450px) {
    header.site .grid {
        grid-template-columns: repeat(2, max-content);
        grid-template-rows: repeat(2, max-content);
        grid-template-areas:
            "title social"
            "menu menu";
        max-width: var(--content-width);
        width: inherit;
    }
}

header.site .platter {
    margin: 0 auto;
    padding: 1.5rem 3rem;
}

header.site .grid nav:first-of-type {
    grid-area: menu;
    justify-content: start;
}

header.site .grid nav:last-of-type {
    grid-area: social;
    justify-content: end;
}

html {
    background-color: var(--html-background-color);
    color: var(--html-color);
    font-family: var(--font-family-body);
    font-size: clamp(var(--font-size-min), 1vw, var(--font-size-max));
}

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

img.circular {
    shape-outside: circle(50%);
    -webkit-clip-path: circle(50%);
}

main {
    max-width: var(--content-width);
    margin: var(--body-item-spacing) auto;
    width: 100%;
}

main h1 { font-size: 1.6em; }
main h2 { font-size: 1.5em; }
main h3 { font-size: 1.4em; }
main h4 { font-size: 1.3em; }
main h5 { font-size: 1.3em; }
main h6 { font-size: var(--body-font-size); }

main h5, main h6 { font-family: var(--font-family-body); }

nav.site {
    align-items: center;
    display: flex;
    font-size: max(1.5rem, 80%);
    justify-content: start;
    letter-spacing: 0.12em;
    list-style: none;
    text-transform: lowercase;
}

nav.site li {
    color: var(--site-nav-link-color);
    display: block;
    margin-inline-end: 0.5em;
}
nav.site .active { font-weight: bold; }

nav.bulleted li:first-child::before {
    color: var(--html-color);
    content: "";
    margin-inline-end: 0;
}

nav.bulleted li::before {
    color: var(--heading-color);
    content: "•";
    font-size: 60%;
    font-weight: normal;
    opacity: 80%;
    margin-inline-end: 0.5em;
}

p {
    letter-spacing: 0.025em;
    line-height: var(--body-line-height);
}
p { margin-block-end: var(--body-item-spacing); }
p:last-child { margin-block-end: 0; }

ul ul,
ul ol,
ol ul,
ol ol {
    margin-inline-start: var(--body-item-spacing);
}

.post-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
@supports (display: subgrid) {
    .post-list {
        align-items: baseline;
        display: grid;
        gap: 1em;
        grid-template-columns:
            minmax(150px, max-content) minmax(20px, max-content) 3px auto;
        grid-template-areas: "month day line title";
    }
}

.post-list li {
    align-items: baseline;
    border-radius: 6px;
    display: grid;
    gap: 1em;
    padding: 0.1em;
    transition: background-color 0.25s;
}
@supports not (display: subgrid) {
    .post-list li {
        grid-template-columns: 100px 20px 3px auto;
        grid-template-areas: "month day thing title";
    }
}
@supports (display: subgrid) {
    .post-list li {
        display: subgrid;
    }
}

.post-list li time:nth-of-type(1) {
    grid-area: month;
    text-align: end;
}

.post-list li time:nth-of-type(2) {
    grid-area: day;
    text-align: end;
}

.post-list li .title {
    font-family: var(--font-family-body);
    grid-area: title;
    text-align: start;
}

.post-list li:hover {
    background-color: var(--post-item-highlight-color);
}

.post-list h1 {
    font-size: inherit;
    font-weight: normal;
    margin: 0;
    padding: 0;
}

.post-list a {
    color: inherit;
}

.post-list a:hover {
    text-decoration: none;
}


.post-title {
    align-items: baseline;
    display: flex;
    flex-wrap: wrap;
    gap: 0 4rem;
    margin-bottom: var(--body-item-spacing);
}

.post-title h1 {
    flex-grow: 1;
    font-size: 1.8em;
    margin-block: 0;
    padding-bottom: 0;
}

.post-title > .post-date {
    color: var(--light-dim);
    display: inline-block;
    font-size: 1.75rem;
    inline-size: min-content;
    letter-spacing: 1px;
    margin-block-start: 0.5rem;
    white-space: nowrap;
}

.p5-sketch {
    display: block;
    position: relative;
    width: 100%;
}

.social menu li + li {
    margin-left: var(--social-menu-padding);
}

.social {
    display: flex;
    letter-spacing: 2px;
    margin-left: auto;
}

.social a {
    background-image: var(--url);
    background-repeat: no-repeat;
    background-size: var(--menu-icon-size);
    display: block;
    height: var(--menu-icon-size);
    width: var(--menu-icon-size);
}

.social a span {
    display: none;
}

.social > li + li:before {
    color: var(--dark);
    padding: 0 0.5rem;
}

.youtube iframe {
    aspect-ratio: 16 / 9;
    margin-bottom: -3px;
    width: 100%;
}

/** SYNTAX HIGHLIGHTING **/

.highlight code {
    background-color: inherit;
    margin-block: 0.5em;
}

.highlight .line {
    display: grid;
    grid-template-columns: max-content auto;
}

.highlight .ln a {
    -webkit-user-select: none;
    -moz-use-select: none;
    -ms-user-select: none;
    user-select: none;
}

.highlight .cl {
    white-space: pre-wrap;
}

/** HELPER CLASSES **/

.centered { text-align: center; }
.float-right { float: right; }

.nobreak { white-space: nowrap; }
.noselect {
    cursor: default;
    -webkit-user-select: none;
    -moz-use-select: none;
    -ms-user-select: none;
    user-select: none;
}

.platter {
    -webkit-backdrop-filter: var(--platter-backdrop-filter);
    backdrop-filter: var(--platter-backdrop-filter);
    background-color: var(--platter-background-color);
    border: 1px solid var(--header-border-color);
    border-radius: 12px;
    box-shadow: 3px 4px 4px var(--header-box-shadow-color);
}

.visible { visibility: visible; }
