$color-main-bg: #f0f0f0;
$color-dark-bg: #070707;
$color-main-blue: #397eaf;
$color-dark-blue: #2e4054;
$color-main-grey: #e1e1e1;
$color-main-grey-dark: #c4c4c4;
$color-dark-grey: #1f1f1f;
$color-darker-grey: #101010;
$color-link-idle: #2e4054;
$color-link-idle-dark: #999999;
$color-link-hover: #999999;
$color-link-hover-dark: #707070;
$color-nav-current: #19212a;
$color-nav-current-dark: #999999;
$nav-alpha: 0.95;
$body-width: 835px;
$border-main: 5px solid;
$border-nav: $border-main $color-main-grey;
$border-dark: $border-main $color-dark-grey;
$font-title: Montserrat, sans-serif;
$font-body: Lato, sans-serif;
$font-code: "Fira Code", monospace;

html {
    background: $color-main-bg;
}

body {
    max-width: $body-width;
    min-width: 378px;
    margin: 0 auto;
    padding: 0.5em;
    color: $color-dark-bg;
    font: 100% $font-body;
}

a {
    color: $color-link-idle;
    text-decoration: none;
    transition: 0.2s ease-in-out;
    &:hover {
        color: $color-link-hover;
    }
}

nav {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    flex-direction: row-reverse;
    font: 400 1.5em $font-title;
    letter-spacing: -0.05em;
    background: rgba($color-main-bg, $nav-alpha);

    a.current {
        color: $color-nav-current;
        pointer-events: none;
        font-weight: 500;
    }

    hr {
        display: none;
    }

    ul {
        flex: 1;
        display: inline-flex;
        padding: 2.15em 0.5em 0 0;
        height: fit-content;

        flex-direction: row;
        justify-content: space-between;
        border-bottom: $border-nav;
    }
}

h1, h2, h3, h4, h5, h6 {
    margin: 0;
    color: $color-main-blue;
    font-family: $font-title;
    font-weight: 500;

    a {
        color: $color-main-blue;

        &:hover {
            color: $color-dark-blue;
        }
    }
}

hr {
    border-width: 0 0 5px 0;
    border-bottom: $border-nav;
}

ul {
    margin: 0;
    padding: 0;
    li {
        list-style-type:none;
    }
}

blockquote {
    margin: 0.5em;
    padding-left: 1em;
    border-width: 0 0 0 5px;
    border-color: $color-main-grey;
    border-style: solid;
    border-radius: 0.5em;
}

code {
    font-family: $font-code;
    font-size: 0.9em;
    background: $color-main-grey;
    padding: 2px;
    border-radius: 5px;
}

div.highlight {
    overflow-x: auto;
    background: $color-main-grey;
    padding-left: 0.5em;
    border-radius: 5px;
    code {
        padding: 0;
    }
}

audio {
    width: 100%;
    border-radius: 25px;
}

footer {
    padding-top: 0.5em;
    text-align: center;
    font: 75% $font-body;
    p {
        margin: 0;
    }
}

.title_with_backlink {
    display: flex;
    justify-content: space-between;
    align-items: baseline;

    .backlink::before {
        content: "← "
    }
}

.with_hidden {
    .hidden {
        display: none;
    }

    &:hover {
        .hidden {
            display: inline;
        }
    }
}

.faint {
    color: $color-main-grey;
}

.about {
    display: flex;
    flex-direction: row;
    #avatar {
        border-radius: 100%;
        height: 128px;
    }
    &-sidebar {
        flex: 23%;
    }
    &-links {
        margin-top: 1em;
        .link-icon {
            width: 32px;
        }
        .link-text {
            display: inline;
            position: relative;
            bottom: 0.75em;
        }
    }
    &-info {
        width: 100%;
        p:first-child {
            margin-top: 0;   
        }
    }
}

.post {
    padding: 1em;
    margin: 1em 0;
    border-radius: 25px 25px 25px 0px;
    border: 2px solid $color-main-grey;
    word-wrap: break-word;

    a {
        color: $color-main-blue;

        &:hover {
            color: $color-dark-blue;
        }
    }

    small p {
        display: inline;
    }

    p {
        img {
            display: block;
            max-width: 100%;
            margin: 0 auto;
            border-radius: 1em;
        }
    }

    &-date::after {
        content: " /";
    }

    &-page {
        margin-bottom: 10px;
        ul {
            padding-left: 10px;
        }
    }

    &-header {
        margin-bottom: 2em;
        &-info {
            * {
                margin: 0 0.1em;
            }
            margin-left: 0.5em;
            float: right;
            display: flex;
            flex-direction: row;
            ul {
                padding: 0;
                li {
                    display: inline;
                    a {
                        background: $color-main-grey;
                        border-radius: 5px;
                        padding: 2px;
                    }
                }
            }
        }
    }
}

@mixin image-list-item ($width, $height, $object-fit: cover) {
    &-item-mask {
        position: absolute;
        z-index: 1;
        width: $width;
        height: $height;
    }
    &-item-img {
        position: relative;
        width: $width;
        height: $height;

        img {
            position: absolute;
            width: 100%;
            height: 100%;
            image-orientation: initial;
            object-fit: $object-fit;
        }
    }
}

@mixin link-color-transition ($color-bg, $color-fg) {
    color: rgba($color-fg, 0);
    background: rgba($color-bg, 0);

    &:hover {
        color: rgba($color-fg, 1);
        background: rgba($color-bg, 0.7);
    }
}

.art-menu {
    display: flex;
    flex-flow: row wrap;
    justify-content: space-around;
    align-content: center;

    @include image-list-item(24em, 18em);

    &-item {
        margin-bottom: 1em;
        &-mask {
            display: inline-flex;
            justify-content: center;
            align-items: center;
            transition: color 0.2s ease-in-out,
                        background 0.2s ease-in-out;

            @include link-color-transition($color-main-bg, $color-dark-bg);
        }
        &-text {
            font-size: 200%;
            margin-bottom: 0.2em;
        }
    }
}

.art {
    display: flex;
    flex-flow: row wrap;

    .art-img {
        margin: 0.5em 0;
        img {
            width: 100%;
            height: auto;
            image-orientation: from-image;
        }
    }
}

.music-project {
    display: flex;
    flex-flow: row wrap;

    &-list {
        display: flex;
        flex-flow: row wrap;
        justify-content: space-evenly;

        @include image-list-item(14em, 14em, contain);

        &-item {
            margin-bottom: 1em;

            &-mask {
                display: inline-flex;
                flex-direction: column;
                justify-content: center;
                text-align: center;
                transition: background 0.2s ease-in-out,
                            color 0.2s ease-in-out;
                @include link-color-transition($color-main-bg, $color-dark-bg);
            }
            &-text {
                font: 200% $font-title;
                margin-top: 0.3em;
                margin-bottom: 0.1em;
            }
        }
    }

    &-titlebar {
        flex: 100%;
    }

    &-sidebar {
        flex: 1;
        padding-right: 0.5em;
        #logo {
            width: 100%;
        }
    }

    &-info {
        flex: 3;
        width: 100%;
    }

    &-release {
        &-list {
            flex: 100%;
        }

        &-info {

        }

        &-type {
            color: $color-main-grey-dark;
        }

        &-by_year {
            padding-right: 0.5em;
            border: $border-nav;
            border-color: transparent;
            border-right-color: $color-main-grey;
            border-width: 0 5px 0 0;
            border-radius: 0.5em;
        }
        &-year {
            position: sticky;
            top: 6em;
            padding: 0.2em 0.3em;
            border-radius: 1em;
            float: right;
            background: rgba($color-main-bg, 0.8);
        }
    }
}

@media only screen and (max-width: 760px) {
    footer p {
        padding: 0;
    }
    nav {
        flex-direction: column;
        img {
            align-self: center;
        }
        ul {
            padding: 0 0.25em;
        }
    }
    .content {
        padding-top: 0.5em;
    }
    .about {
        flex-direction: column-reverse;
        &-sidebar {
            display: flex;
            flex-direction: column;
            img {
                width: 128px;
                margin: 0 auto;
            }
        }
        &-links {
            margin-top: 0;
            p:first-child {
                margin: 0;
                padding-top: 0;
            }
            ul {
                padding-top: 1em;
                display: flex;
                flex-wrap: wrap;
                li {
                    margin: auto;
                    padding: 0 0.5em;
                }
            }
        }
    }
    .music-project {
        flex-flow: column;
        &-titlebar {
            flex: 1;
        }
        &-sidebar {
            padding: 0;
        }
        &-release {
            &-year {
                top: 8em;
            }
        }
    }
}

@media (prefers-color-scheme: dark) {
    html {
        background: $color-dark-bg;
    }
    body {
        color: $color-main-bg;
    }
    a {
        color: $color-link-idle-dark;
        &:hover {
            color: $color-link-hover-dark;
        }
    }
    nav {
        background: rgba($color-dark-bg, $nav-alpha);
        a.current {
            color: $color-nav-current-dark;
        }
        ul {
            border-bottom: $border-dark;
        }
    }
    hr {
        border-bottom: $border-dark;
    }
    code {
        background: $color-darker-grey;
    }
    .art-menu-item-mask {
        @include link-color-transition($color-dark-bg, $color-main-bg);
    }
    div.highlight {
        background: $color-darker-grey;
    }
    .post {
        border: 2px solid $color-dark-grey;
    }
    .post-page .post-header ul li a {
        background: $color-dark-grey;
    }
    .music-project {
        &-release {
            &-type {
                color: $color-dark-grey;
            }
            &-year {
                background: rgba($color-dark-bg, 0.8);
            }
        }
        &-list-item-mask {
            @include link-color-transition($color-dark-bg, $color-main-bg);
        }
        &-release {
            &-by_year {
                border-right-color: $color-dark-grey;
            }
        }
    }
    blockquote {
        border-color: $color-dark-grey;
    }
}