body {
    background-image: url(../assets/img/about.jpg);
    background-size: cover;
    background-position: center;
    background-position-y: 10%;
    background-attachment: fixed;
    flex-direction: column;
    justify-content: flex-start;
}

body::after {
    content: "";
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(var(--basic-black-rgb), 1.0);
    animation: 2s background-fadeout 3.5s forwards;
}

@keyframes background-fadeout {
    0% {
        background-color: rgba(var(--basic-black-rgb), 1.0);
    }
    100% {
        background-color: rgba(var(--basic-black-rgb), 0.75);
    }
}

#site-top {
    width: 85%;
    height: calc(100% - 4rem);
    margin-top: 4rem;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 1;
    color: var(--basic-white);
}

#akai-cursive {
    width: 20%;
    min-width: 256px;
}

#akai_sign1 {
    stroke: var(--basic-white);
    stroke-dasharray: 202px;
    animation: line_move_1 4s 1;
    box-shadow: 0 0 50px var(--basic-white);
}

@keyframes line_move_1 {
    0% {
        stroke-dashoffset: 202px;
        animation-timing-function: cubic-bezier(.09, .91, .29, .99);
    }
    100% {
        stroke-dashoffset: 0px;
    }
}

#akai_sign2 {
    stroke: var(--akai-600);
    stroke-dasharray: 8px;
    animation: line_move_2 4s 1;
    box-shadow: 0 0 50px var(--akai-600);
}

@keyframes line_move_2 {
    0% {
        stroke-dashoffset: 8px;
        animation-timing-function: cubic-bezier(.09, .91, .29, .99);
    }
    30% {
        stroke-dashoffset: 8px;
        animation-timing-function: cubic-bezier(.09, .91, .29, .99);
    }
    100% {
        stroke-dashoffset: 0px;
    }
}

#open-menu-button-container {
    position: absolute;
    bottom: 30%;
    left: 50%;
}

#open-menu-button {
    border: 1px solid var(--basic-white);
    padding: 1px 0.75rem;
    user-select: none;
    cursor: pointer;
    position: relative;
    right: 50%;
    opacity: 0;
    animation: 2s visible-menu-open-button 4s forwards;
}

#open-menu-button::after {
    content: "OPEN MENU >";
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    padding: 1px 0.75rem;
    width: 100%;
    height: 100%;
    color: var(--basic-black);
    background-color: var(--basic-white);
    clip: rect(0, 0, 100vh, 0);
    transition: 0.5s ease;
}

#open-menu-button:hover::after {
    clip: rect(0, 9rem, 100vh, 0);
}

@keyframes visible-menu-open-button {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}