:root {
    --conic: conic-gradient(from 180deg at 50% 50%, #e8515c 0deg, #fe6ebd 45deg, #5cadfe 90deg, #75f5d8 150deg, #fdf175 225deg, #fe8564 290deg, #e8515c 1turn);
}

*,
*::after,
*::before {
    font-family: 'IBM Plex Sans', 'Times New Roman', Times, serif, sans-serif;
    text-decoration: none;
    margin: 0;
    padding: 0;
    inset: 0;
    position: relative;
}

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: rgb(24 30 39/1);
    color: rgb(92 107 129/1);
    scroll-behavior: smooth
}

body {
    font-family: 'IBM Plex Sans', sans-serif;
    background-color: #000;
    animation: dotScroll 16s linear infinite;
    background-image: radial-gradient(circle, #2e3c51 2.5px, transparent 0);
    background-size: calc(14.2857142857% - 5px) 150px;
    background-position: -60px 0px;
    width: 100%;
    margin-right: auto;
    margin-left: auto;
    height: 100%;
    display: grid;
    place-items: center;
}

@keyframes dotScroll {
    0% {
        background-position-y: 140px;
    }

    to {
        background-position-y: 0px;
    }
}

nav {

    background-color: #2a3a53;
    align-items: stretch;
    bottom: 0;
    display: flex;
    flex-direction: row-reverse;
    position: fixed;
    top: 0;
    transform: translate3d(calc(-100% + 48px), 0, 0);
    width: 100vw;
    z-index: 30;
    border: none;
    transition: transform 2s ease linear;
}

.nav-sidebar {
    border: inherit;
    background: transparent;
    backdrop-filter: blur(15px);
    position: relative;
    transition: background-color 500ms ease-in;
    z-index: 50;
    height: 100dvh;
    width: 3rem;
    display: flex;
    color: #fff;
    cursor: pointer;
    flex-direction: column;

}

.nav-sidebar:hover {
    background-color: #282f39;
}

.nav-logo {
    margin-left: 0.55rem;
    margin-right: 0.55rem;
    margin-top: 1rem;
    letter-spacing: 3px;
    font-size: 1.7rem;
    transition: all 0.3s ease-in;
}

.nav-sidebar:hover .nav-logo {
    letter-spacing: -2px;
    transform: translateZ(33px);
}

.nav-label {
    margin-top: 1.66rem;
    margin-bottom: 0.66rem;
    margin-left: 0.44rem;
    margin-right: 0.44rem;

    writing-mode: vertical-rl;
    letter-spacing: 5px;
    font-size: 1.7rem;
    transform: translate(0deg);
}

main {
    margin-left: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

section.content {
    /* 
    grid-template-rows: repeat(3, 1fr);
    grid-template-columns: 1fr 1fr 1fr;
    */
    margin-top: 2rem;
    display: grid;
    grid-template-rows: repeat(2, 1fr);
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    place-items: center;
}

.card {
    border-radius: 11px;
    margin: 0.5rem;
    padding: 0.5rem;
    /* background: linear-gradient(180deg, white, black); */
    color: #000;
    height: 15rem;
    width: 20rem;
    cursor: pointer;
    display: flex;
    border: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    animation: animate-cards 15s linear infinite;
    transition: all 999ms ease-in-out;
}

@keyframes animate-cards {
    from {
        background: linear-gradient(180deg, 90% black, 10% white);
    }

    to {
        background: linear-gradient(-180deg, 10% black, 90% white);
    }
}

.card:hover {
    transform: translateY(-30px);
    box-shadow: 0 0 2rem white;
    background: var(--conic);
}

.card:hover span.hidden {
    opacity: 1;
}

.card a {
    text-decoration: none;
    font-size: 1.1rem;
    text-align: center;
    height: 3rem;
    color: inherit;
    font-weight: bold;
    width: 7rem;
    border: none;
    border-radius: 1px;
    background-color: transparent;
}

.card a:hover {
    text-decoration: underline;
}

.card-heading {
    font-size: 2rem;
}

span.hidden {
    font-size: 1.7rem;
    transition: all 800ms ease-in-out;
    opacity: 0;
}

.card.end {
    margin-top: 1rem;
    grid-column: span 3;
    width: calc(100% - 2rem);
}