:root {
    --site-bg: url('images/bg-image.png');
    --main-bg: url('images/nothing.png');
    --gradient-bg: linear-gradient(0deg, #0000 0%, #1c246288 33%, #18084388 90%);
    --accent-color: violet;
    --link-color: mediumpurple;
    --bg-color: black;
    --text-color: violet;
    --text-color2: white;
    --favorite-color: darkslateblue;
}

* {
    color: var(--text-color);
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    text-shadow: 2px 2px 5px var(--bg-color);
    scrollbar-color: var(--favorite-color) var(--bg-color);
    scrollbar-width: thin;
}

::selection {
    background: var(--favorite-color);
    color: var(--bg-color);
}

html {scroll-behavior: smooth;}

body {
    margin: 0;
    background-color: var(--bg-color);
    background-image: var(--site-bg);
    background-repeat: no-repeat;
}

/* spacing */
p {line-height: 1.5em;}

/* header */
header > h1 {
    margin: 1em auto;
    max-width: 960px;
    text-align: center;
    color: var(--text-color2);
}

/* nav */
nav {
    padding: 0 1em 1em 1em;
    font-weight: bold;
}

nav ul {
    max-width: 960px;
    margin: auto;
    line-height: 3rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    list-style-type: none;
    padding-left: 0;
}

nav li a {
    background-color: var(--bg-color);
    border: 1px solid var(--favorite-color);
    padding: .5em 3em;
    text-decoration: none;
    transition: color 400ms ease-out, border-color 400ms ease-out;
}

nav li a:hover {
    border-color: var(--accent-color);
}

/* links */
a {
    color: var(--link-color);
    transition: color 400ms ease-out;
}
a:visited { color: var(--favorite-color); }
a:hover { color: var(--text-color2); }

/* list style */
ul { list-style-type: "✦ "; }

/* content wrapper */
#content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center; /* center sidebar and main horizontally */
    max-width: 960px;
    margin: auto;
    gap: 1em;
}

/* sidebar */
#sidebar {
    background-image: var(--main-bg);
    border: 1px solid var(--favorite-color);
    min-width: 220px;
    text-align: center;
    flex-shrink: 0; /* prevent shrinking */
}

/* avatar */
#avatar {
    margin: 1em auto;
    max-width: 164px;
    max-height: 164px;
}
#avatar img {
    background: var(--bg-color);
    max-width: 160px;
    border: 1px solid var(--favorite-color);
    box-shadow: var(--accent-color) 0 0 4px;
}

/* bio */
#bio {
    font-size: smaller;
    margin: 1em auto;
    background: var(--bg-color);
    border: 1px solid var(--favorite-color);
    box-shadow: var(--accent-color) 0 0 4px;
}
#bio p { color: var(--text-color2); text-align: center; }

/* main */
main {
    background-image: var(--main-bg);
    background-repeat: repeat;
    image-rendering: pixelated;
    max-width: 800px;
    border: 1px solid darkslateblue;
    color: var(--accent-color);
    max-height: 600px;
    overflow: auto;
    text-align: center;
    flex-shrink: 0;
}

/* prose inside main */
.prose { background: var(--gradient-bg); margin: 0; padding: 1em; }

/* float image */
.img-right { float: right; }

/* footer */
footer { text-align: center; font-size: small; padding: 1em; }

/* mobile */
@media only screen and (max-width: 800px) {
    #content {
        flex-wrap: wrap;
    }
    #sidebar {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
        padding-top: 2em;
    }
    #avatar { margin: 0 1em; }
    #bio { width: 50%; }
    #sidebar ul {
        margin: 0 1em;
        display: flex;
        flex-wrap: wrap;
        line-height: 2em;
        padding-left: 0;
    }
    #sidebar li { margin: .3em 1em; }
    main { max-height: fit-content; }
    .img-right { float: none; text-align: center; }
}