:root {
    --game-header-space: 500px;
    --game-content-inset: 50px;

    --logo-height: 75%;
    --logo-margin-side: 50px;

    --game-nav-height: 60px;
    --game-nav-padding: 10px;
}

html {
    overflow-x: hidden;
    overflow-y: scroll;
}

body {
    overflow: inherit;
    width: 100%;
    height: 100%;
}

#game-header {
    position: relative;
    width: 100vw;
    height: calc(var(--game-header-space) - var(--game-content-inset));
}

#game-header #logo {
    position: absolute;
    width: auto;
    height: var(--logo-height);
    top: 0;
    bottom: 0;
    margin: auto;
    margin-left: var(--logo-margin-side);
    margin-right: var(--logo-margin-side);
    z-index: 1;
}

#game-header #thumbnail-content {
    position: absolute;
    top: 0;
    width: 100%;
    height: calc(100% + var(--game-content-inset));
}

#game-header #thumbnail {
    position: absolute;
    width: auto;
    height: 100%;
    z-index: 0;
    mask-image: 
        linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%),
        linear-gradient(to bottom, black 0%, black 90%, transparent 100%);
    mask-composite: intersect;
    mask-repeat: no-repeat;
    mask-size: 100% 100%;
    mask-position: 0 0;
}

#game-header #thumbnail-cover {
    position: absolute;
    width: auto;
    height: auto;
    min-width: 100%;
    min-height: 100%;
    z-index: -1;
    filter: blur(50px);
    mask-image: linear-gradient(to bottom, black 0%, black 90%, transparent 100%);
    mask-composite: intersect;
    mask-repeat: no-repeat;
    mask-size: 100% 100%;
    mask-position: 0 0;
}

#color-background {
    position: fixed;
    width: 100vw;
    height: 100vh;
    z-index: -99;
}

#game-content {
    top: calc(var(--game-header-space) - var(--game-content-inset));
    width: 100vw;
    height: 100vh;
    backdrop-filter: blur(7px);
    background-color: rgba(0, 0, 0, .1);
    border-width: 0;
    border-top-width: 4px;
    border-color: rgba(0, 0, 0, .15);
    border-style: solid;
}

#game-content #game-nav {
    display: flex;
    flex-direction: horizontal;
    width: 100%;
    height: var(--game-nav-height);
    padding: var(--game-nav-padding);
}

#game-content #game-nav #play-button {
    background: linear-gradient(
        160deg, 
        var(--primary), 
        color-mix(in srgb, var(--primary) 60%, #fff)
    );
    padding: 10px;
    align-self: center;
}

#list-container li {
    display: flex;
    margin-bottom: 5px;
}

#list-container li * {
    margin: auto;
}

#list-container #list-title {
    margin-bottom: 15px;
}

@media(max-width: 1000px) {
    #game-header #logo {
        top: 0;
        left: 0;
        right: 0;
        margin: auto;
        margin-top: var(--logo-margin-side);
        margin-bottom: var(--logo-margin-side);
        height: auto;
        width: var(--logo-height);
    }
}