* {
    box-sizing: border-box;
}

html, body {
    --border-radius: 100px;
    --blue: #1C47FF;
    --pink: #D6A3FB;
    --green: #D0FF94;
    --grey: #E5E5E5;
    --gutter: 3.125vw;

    margin: 0;
    padding: 0;
    background: #000000;
    color: #FFFFFF;
    font-size: 30px;
    font-family: "Syne", sans-serif;
      }

h1 {
    font-size: 70px;
    line-height: 1em;
    margin: 0px;
}

h2 {
    font-size: 60px;
    margin: 0px;
}

a {
    color: #FFFFFF;
    text-decoration: none;
}

section {
    position: relative;
    display: flex;
    width: 100%;
    height: calc(100vh - 100px);
    top: 100px;
    z-index: 2;
}

section.sticky {
    position: sticky;
    margin-top: 100px;
}

section.full-screen {
    height: 100vh;
    top: 0;
    margin-top: 0;
    z-index: 3;
}

/* navigation */

nav {
    position: fixed;
    width: 100%;
    height: 100px;
    top: 0;
    left: 0;
    font-size: 20px;
    z-index: 1;
}

nav ul {
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

nav ul li {
    list-style: none;
    margin-left: 45px;
}

nav ul li a {
    color: #FFFFFF;
    font-family: "Space Mono", monospace;
    transition: 0.5s;
}

nav ul li a:hover {
    color: var(--blue)
}

/* about section */

section.about .empty {
    flex-basis: 37.5vw;
    background: var(--grey);
    border-radius: var(--border-radius);
    transition: flex-basis 1s cubic-bezier(0,.67,.48,.99);
}

section.about article {
    flex: 1;
    display: flex;
    flex-direction: column;
}

section.about article .title {
    flex: 1;
    display: flex;
    align-items: flex-end;
    background: var(--blue);
    border-radius: var(--border-radius);
    padding: var(--gutter);
    transition: flex-basis 1s cubic-bezier(0,.67,.48,.99);
}

section.about article .description {
    flex: 1;
    display: flex;
    align-items: center;
    background: var(--pink);
    border-radius: var(--border-radius);
    padding: var(--gutter);
    color: #000000;
}

/* service section */

section.service article {
    display: flex;
    width: 100%;
}

section.service figure {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-basis: 56.25vw;
    margin: 0;
    background: var(--green);
    border-radius: var(--border-radius);
    max-width: 62.5vw;
    transition: flex-basis 1s cubic-bezier(0,.67,.48,.99);
}

section.service figure img {
    width: 40%;
}

section.service .text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    flex: 1;
    background: #1F1A1C;
    padding: var(--gutter);
    border-radius: var(--border-radius);
}

section.service .text a {
    font-family: "Space Mono", monospace;
}

/* service section animation */

section.service.service-html figure img {
    animation-name: float;
    animation-duration: 1s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-timing-function: cubic-bezier(.26,.64,.8,.33);
    transition: 0.5s;
}

section.service.service-html figure img:hover {
    background-color: var(--pink);
}

section.service.service-css figure img {
    animation-name: float;
    animation-duration: 1s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-timing-function: cubic-bezier(.26,.64,.8,.33);
    transition: 0.5s;
}

section.service.service-css figure img:hover {
    filter: hue-rotate(180deg);
}

section.service.service-js figure img {
    animation-name: float;
    animation-duration: 1s;
    animation-iteration-count: infinite;
    animation-direction: alternate;
    animation-timing-function: cubic-bezier(.26,.64,.8,.33);
    transition: 0.5s;
}

section.service.service-js figure img:hover {
    animation-name: rotate;
    animation-duration: 2s;
}

@keyframes float {
    0% {
        transform: translateY(-5%);
    }
    100% {
        transform: translateY(5%);
    }
}

@keyframes rotate {
    0% {
      transform: rotate(0);
    }
    100% {
      transform: rotate(360deg);
    }
  }

/* service section overrides */

section.service.service-html figure {
    background: var(--green);
}

section.service.service-html .text h2,
section.service.service-html .text a {
    color: var(--pink);
}

section.service.service-css figure {
    background: var(--blue);
}

section.service.service-css .text h2,
section.service.service-css .text a {
    color: var(--green);
}

section.service.service-js figure {
    background: var(--pink);
}

section.service.service-js .text h2,
section.service.service-js .text a {
    color: #4E6FFF;
}

/* contact section */

section.contact {
    align-items: center;
    justify-content: center;
    background: linear-gradient(var(--blue) 8%, var(--green) 55%, var(--pink) 63%, var(--grey) 99%);
    border-radius: var(--border-radius);
}

section.contact a {
    font-size: 100px;
    color: #000000;
    font-weight: bold;
    transition: color 0.2s cubic-bezier(.26,.64,.8,.33);
}

section.contact a:hover {
    color:#FFFFFF;
    filter: drop-shadow(16px 16px 10px black);
}

/* responsive */

@media only screen and (max-width: 768px) {
    html, body {
        --border-radius: 50px;
        --gutter: 6.25vw;
    }

    h1 {
        font-size: 60px;
    }

    h2 {
        font-size: 40px;
    }

    nav ul li {
        margin-left: 25px;
    }

    section.service article {
        flex-direction: column;
    }

    section.service figure {
        flex-basis: 25vh;
    }

    section.service figure img {
        width: 20%;
    }

    section.contact a {
        font-size: 50px;
        transform: rotate(90deg);
    }
}