@font-face {
    font-family: "Inter";
    src: url(./fonts/Inter_Variable.ttf);
}

@font-face {
    font-family: "RobotoSlab";
    src: url(./fonts/RobotoSlab_Variable.ttf);
}

body {
    --bg: #181818;
    --bg1_5: #202020;
    --bg2: #404040;
    --fg: #eeeeee;
    --box-shadow: 0 0 0.7em 0.7em #101010;
    --margin: 3rem;
    --margin-ft: 20vw;

    position: relative;
    margin: 0;
    width: 100%;
    overflow-x: hidden;

    background: var(--bg);
    color: var(--fg);
    font-family: "Inter", sans-serif;
    font-size: 12pt;
    font-weight: 500;
}

/* JS notice */
#js-notice {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;

    pointer-events: none;
}
#js-notice > div {
    position: absolute;
    bottom: 0;
    left: 0;
    padding: 1em;
    margin: auto auto 2em 2em;
    z-index: 100;

    border-radius: 1em;
    box-shadow: var(--box-shadow);
}

/* icon links */
a.icon {
    height: 1.5em;
}
a.icon > img {
    height: 1.5em;
    filter: invert(1);
}

/* header and footer */
header, footer {
    width: 100%;
    padding: 1em;
    box-sizing: border-box;

    box-shadow: var(--box-shadow);
    border-bottom: 1px solid var(--bg1_5);
}
header {
    display: flex;
    flex-direction: row;
    align-items: center;
}

header > a,
header > a:visited {
    margin-right: 1em;

    text-decoration: none;
    color: var(--fg);
}
header > a > abbr {
    text-decoration: none;
}
header > a:nth-child(1) {
    padding-right: 1em;
    border-right: 1px solid var(--bg2);
}

/* fancy abbreviations */
#abbr-host {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;

    pointer-events: none;
}
.fancy-abbr {
    position: absolute;
    padding: 0.2em 0.5em;

    opacity: 0;
    background: var(--fg);
    color: var(--bg);
    border-radius: 1em;
    transition: top 0.1s ease,
                left 0.1s ease,
                opacity 0.1s ease;

    pointer-events: none;
}

/* fancy hi-s */
@keyframes bg-move {
    0% { background-position: 0% 0%; }
    50% { background-position: 100% 0%; }
    100% { background-position: 0% 0%; }
}
@keyframes pop-in {
    from { opacity: 0%; }
    to { opacity: var(--max-opacity); }
}
#hellos {
    display: flex;
    flex-direction: row;
    align-items: baseline;
    margin: var(--margin) var(--margin) 0 var(--margin);
}
#hellos-themselves > td {
    padding-right: 1rem;
    vertical-align: baseline;
}
#hellos-themselves > td:first-child {
    font-size: 5em;
    font-weight: 800;
    color: var(--fg); /* fallback for incompatible browsers */
    color: transparent;
    background: linear-gradient(to right, 
        #72ebeb 0%,
        #ffff58 50%,
        #e949a6 100%);
    background-clip: text;
    -webkit-background-clip: text;
    background-size: 200% 100%;
    animation: ease-in-out 10s infinite alternate bg-move;
}
#hellos-themselves > td:not(:first-child) {
    font-weight: 700;
    font-size: calc(3em - (var(--pos) * 0.2em));
    --max-opacity: calc(0.8 - (var(--pos) * 0.1));
    opacity: 0;
    animation: 0.2s ease-in calc(0.5s + var(--pos) * 0.05s) 1 forwards pop-in;
}
#hellos-themselves td:first-child a,
#hellos-themselves td:first-child a:visited {
    color: transparent;
}
#hellos-themselves td:not(:first-child) a,
#hellos-themselves td:not(:first-child) a:visited {
    color: var(--fg);
}
#hello-levels {
    position: relative;
    top: -0.5em;
}
#hello-levels > td {
    font-weight: 700;
    color: var(--fg);
    opacity: 0;
    --max-opacity: calc(0.8 - (var(--pos) * 0.1));
    animation: 0.2s ease-in calc(0.5s + var(--pos) * 0.05s) 1 forwards pop-in;
}
@media (prefers-reduced-motion) {
    #hellos-themselves > td:first-child {
        animation: none;
        background-image: none;
        background-color: var(--fg);
    }
}

main > *:not(#hellos) {
    --max-opacity: 1;
    opacity: 0;
    animation: 0.2s ease-in 0.9s 1 forwards pop-in;
}

/* introduction */
#introduction,
#facts {
    margin: var(--margin);
}
#introduction,
#facts {
    width: 60vw;

    font-family: "RobotoSlab", sans-serif;
    font-weight: 400;
    font-size: 1.5rem;
}
#facts {
    font-size: 1rem;
}
main > *:not(#hellos) abbr {
    text-decoration: none;
}
main > *:not(#hellos) abbr::before {
    content: "";
    display: inline-block;
    width: 0.7em;
    height: 0.7em;

    background: url(./icons/bard-line.svg);
    opacity: 0.5;
}
main > *:not(#hellos) a,
main > *:not(#hellos) a:visited {
    text-decoration: none;
    color: var(--fg);
}
main > *:not(#hellos) a::after {
    content: "";
    display: inline-block;
    width: 1em;
    height: 1em;
    position: relative;
    top: 0;
    right: 0;

    background: url(./icons/arrow-right-up-line.svg);
    filter: brightness(50%);
    transition: top 0.2s, right 0.2s;
}
main > *:not(#hellos) a:hover::after {
    top: -0.1em;
    right: -0.1em;
}

/* projects */
#projects > div {
    overflow: auto;
    --border: 2px;
    border-left: var(--border) solid var(--left-color);
    border-right: var(--border) solid var(--right-color);

    background: linear-gradient(to right,
        color-mix(in srgb, var(--left-color) 5%, transparent) 0%,
        color-mix(in srgb, var(--right-color) 5%, transparent) 100%);
    padding: 1em calc(var(--margin) - var(--border));
}
#projects > div > h1 {
    width: fit-content;
    margin: 0;

    font-family: Inter;
    font-size: 2.5em;
    font-weight: 800;
    color: transparent;
    background: linear-gradient(to right,
        var(--left-color) 0%,
        var(--right-color) 100%);
    background-clip: text;
    -webkit-background-clip: text;
}
#projects > div > h1 > a {
    color: transparent;
}
#projects > div > p {
    width: 60em;

    font-family: RobotoSlab;
    font-size: 1.2em;
    font-weight: 400;
}
#projects > div > img {
    float: right;
    max-width: 30vw;
    max-height: 30vh;

    border-radius: 1em;
}

#project-separator {
    padding: 0 !important;
}
#project-separator > span {
    display: inline-block;
    margin: 1em var(--margin);
}
#project-separator > hr {
    margin: 0;
    border: 1px solid var(--fg);
    opacity: 0.2;
}

/* facts and testimonials */
#facts,
#testimonials {
    margin: var(--margin) var(--margin-ft);
    width: 60vw;

    font-family: RobotoSlab;
    font-size: 1.2em;
    font-weight: 400;
}
#testimonials a,
#testimonials span {
    opacity: 0.5;
}

/* footer */
footer {
    margin-top: calc(2 * var(--margin));
    border-top: 1px solid var(--bg1_5);
}
footer ul {
    list-style: none;
    opacity: 0.5;
}
footer a,
footer a:visited {
    color: var(--fg);
}