:root {
    --light-text-color: #333;
    --light-link-color: #006EB9;
    --light-border-color: #eee;
    --light-background-color: #F5F7F9;
    --light-content-background-color: white;

    --dark-text-color: #D3D3D3;
    --dark-link-color: #51A2FF;
    --dark-border-color: #A9A9A9;
    --dark-background-color: #0D0D0D;
    --dark-content-background-color: #242424;

    --current-text-color: var(--light-text-color);
    --current-link-color: var(--light-link-color);
    --current-border-color: var(--light-border-color);
    --current-background-color: var(--light-background-color);
    --current-content-background-color: var(--light-content-background-color);
    --current-category-coding: #378ADD;
    --current-category-hardware: #1D9E75;
    --current-category-games: #D85A30;
    --current-category-astro: #7F77DD;

    --max-width: 1000px;
}
html {
    font-family: system-ui, -apple-system, sans-serif;
    color: var(--current-text-color);
    scroll-behavior: smooth;
}

body {
    padding: 0;
    margin: 0;
    background-color: var(--current-background-color);
}
a {
    color: var(--current-link-color);
}
img {
    max-width: 100%;
}

main {
    display: grid;
    grid-template-columns: 250px 1fr;
    grid-template-rows: 48px 1fr;
    grid-template-areas:
        "header header"
        "sidebar content";
    max-width: var(--max-width);
    margin: 30px auto;
    border-radius: 10px;
    align-items: start;
    background-color: var(--current-content-background-color);
    border: 1px solid var(--current-border-color);
}
header {
    grid-area: header;
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--current-content-background-color);
    border-bottom: 1px solid  var(--current-border-color);
    border-top-right-radius: 10px;
    border-top-left-radius: 10px;
    padding: 12px 16px;
    display: grid;
    grid-template-columns: 100px 1fr 100px;
    grid-column-gap: 20px;
}
header .logo {
    font-weight: bold;
    font-size: 1.3em;
}
header .logo a {
    color: var(--current-text-color);
    text-decoration: none;
}
header form input {
    border: 1px solid var(--current-border-color);
    border-radius: 5px;
    padding: 5px 10px;
    width: 100%;
}

header aside {
    font-size: 0.9em;
    text-align: right;
    padding-top: 4px;
}
header aside a {
    text-decoration: none;
}

nav {
    grid-area: sidebar;
    position: sticky;
    top: 48px; /* Must match the header height */
    overflow-y: auto;
    padding: 20px;
    z-index: 10;
    /*height: calc(100vh - 88px);*/
}

article {
    grid-area: content;
    padding: 20px;
    border-left: 1px solid  var(--current-border-color);
}

/* NAV */
.main-list {
    list-style: none;
    margin: 0;
    padding: 0;
}
.main-list .menu-section {
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px solid  var(--current-border-color);
}
.main-list .menu-section:last-of-type {
    border-bottom: none;
}
.main-list .menu-header {
    font-weight: bold;
}
.main-list .sub-list {
    margin: 0;
    padding: 0;
    padding-left: 18px;
    margin-top: 3px;
}
.main-list .sub-list li {
    line-height: 1.6em;
    list-style: disc;
}
.main-list .sub-list li a {
    text-decoration: none;
    color: var(--current-text-color);
}
.main-list .sub-list li a:hover {
    text-decoration: underline;
}
.main-list .sub-list.coding li::marker {
    color: var(--current-category-coding);
    font-size: 1.3em;
}
.main-list .sub-list.hardware li::marker {
    color: var(--current-category-hardware);
    font-size: 1.3em;
}
.main-list .sub-list.games li::marker {
    color: var(--current-category-games);
    font-size: 1.3em;
}
.main-list .sub-list.astro li::marker {
    color: var(--current-category-astro);
    font-size: 1.3em;
}
/*  */

/* Article */
article {
  line-height: 1.6em;
}

pre[class*="language-"], code[class*="language-"] {
    white-space: pre-wrap !important;
    word-wrap: break-word; /* For older browsers */
}

article h2, article h3, article h4 {
    margin-bottom: 5px;
}
article img {
    max-width: 100% !important;
    height: auto;
}
article div.box {
    padding: 5px 10px;
    margin-top: 5px;
    margin-bottom: 15px;
    border: 1px solid var(--current-border-color);
    font-size: 0.9em;
    background-color: var(--current-background-color);
}
article a {
    text-decoration: none;
}
article a:hover {
    text-decoration: underline;
}
article p {
    margin-top: 8px;
    margin-bottom: 8px;
}
article ul {
    margin-top: 5px;
    padding-left: 20px;
    margin-bottom: 5px;
    line-height: 1.6em;
}
article ul li {
    margin-bottom: 5px;
}
h1, h2, h3, h4, h5 {
    padding: 0;
    margin: 0;
    margin-top: 30px;
    font-family: system-ui, -apple-system, sans-serif;
    line-height: 1.3em;
}
h1 {
    font-size: 2.2rem;
    margin-top: 0;
}
h2 {
    font-size: 1.75rem;
}
h3 {
    font-size: 1.35rem;
}
h4, h5 {
    font-size: 1.15rem;
}

article h1 span, article h2 a, article h2 span, article h3 a, article h3 span, article h4 a, article h5 a {
    display: block;
    text-decoration: none;
    color: var(--current-text-color);
    margin: 0;
    padding: 0;
}
.share-button {
    display: none;
    padding: 7px 15px;
    margin-top: 5px;
    margin-bottom: 10px;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.85em;
    border: 2px solid var(--current-border-color);
    background-color: var(--current-background-color);
    color: var(--current-link-color);
}

.show {
    display: block !important;
}
.pub-date {
    float: right;
    font-style: italic;
    font-size: 0.85rem;
}
.breadcrumbs {
    list-style: none;
    padding: 0;
    margin-top: 0;
    font-size: 0.85rem;
}
.breadcrumbs li {
  display: inline;
}
.breadcrumbs li:after {
    content: ">";
}
.breadcrumbs li:last-of-type:after {
    content: "";
}
.breadcrumbs a {
    text-decoration: none;
}
.breadcrumbs a:hover {
    text-decoration: underline;
}
.crumbs {
    margin-bottom: 20px;
    padding-top: 0;
}
#comments_widget {
    scroll-behavior: smooth;
    border-top: 2px solid var(--current-text-color);
    border-bottom: 6px solid var(--current-text-color);
    padding-top: 5px;
    padding-bottom: 5px;
    margin-bottom: 10px;
    margin-top: 10px;
}
#comments_widget summary {
    border-top: 6px solid var(--current-text-color);
    border-bottom: 2px solid var(--current-text-color);
    cursor: pointer;
    padding-bottom: 5px;
    padding-top: 5px;
}
figure {
    text-align: center;
    font-style: italic;
    display: block;
    padding: 0;
    margin-left: 0;
    margin-right: 0;
    margin-bottom: 25px;
    margin-top: 25px;
}
.rk-video a {
    display: block;
    height: 180px;
    background-repeat: no-repeat;
    background-size: 100% auto;
    width: 320px;
    margin: 0 auto;
    border: 2px solid var(--current-text-color);
    border-radius: 7px;
}
.rk-video span {
    display: block;
    height: 100%;
    background-image: url('/static/play.svg');
    background-repeat: no-repeat;
    background-size: 50px auto;
    background-position: 50% 50%;
}
table, td, tr, th {
    border-collapse: collapse;
    border: 1px solid var(--current-border-color);
  }
table {
    width: 100%;
    margin-bottom: 20px;
}
td, th {
    padding: 5px 10px;
}
th {
    background-color: var(--current-background-color);
}
#disqus_thread {
    padding-top: 10px;
    padding-bottom: 10px;
}
/* */
.index-list {
    padding-left: 17px;
    margin-top: 10px;
}
.index-list li {
    margin-bottom: 10px;
    font-weight: bold;
}
.index-list li::marker {
    font-size: 1.1em;
}

/* mobile */
.mobile-nav {
    display: none;
}

@media only screen and (max-width : 1100px) {
    .image-slider img {
        max-width: 95vw;
    }
    main {
        margin: 20px;
    }
}

@media only screen and (max-width : 900px) {
    main {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto 1fr;
        grid-template-areas:
          "header"
          "sidebar"
          "content";
    }
    nav {
        background-color: var(--current-content-background-color);
        padding-bottom: 0;
        padding-top: 0;
        border-bottom: 1px solid var(--current-border-color);
    }
    .main-list {
        padding-top: 15px;
        display: grid;
        grid-template-columns: 1fr 1fr 1fr 1fr;
    }
    .main-list .menu-section {
        border: 0;
    }
    article {
        border-left: 0;
    }
}
@media only screen and (max-width : 750px) {

    .main-list {
        display: none;
        grid-template-columns: 1fr 1fr;
    }
    .mobile-nav {
        display: block;
        font-weight: bold;
        margin-bottom: 5px;
        margin-top: 5px;
        text-align: center;
        cursor: pointer;
    }
    .mobile-nav span {
        background-image: url('/static/menu.svg');
        background-repeat: no-repeat;
        background-size: 20px auto;
        background-position: 0 50%;
        padding-left: 30px;
    }
    .show-nav {
        display: grid !important;
    }
}
@media only screen and (max-width : 440px) {
    h1 {
        font-size: 1.7rem;
    }
    h2 {
        font-size: 1.5rem;
    }
    h3 {
        font-size: 1.3rem;
    }
    h4, h5 {
        font-size: 1.2rem;
    }
    main {
        margin: 0;
        border-radius: 0;
        border: 0;
    }
    nav {
        top: 52px;
    }
    header {
        grid-template-columns: 70px 1fr 90px;
        grid-column-gap: 10px;
    }
    header aside {
        text-align: left;
        font-size: 0.8rem;
    }
    .main-list {
        display: none;
        grid-template-columns: 1fr;
    }
}
/* */


@view-transition {
  navigation: auto;
}

@media (prefers-color-scheme: dark) {
    :root {
        --current-text-color: var(--dark-text-color);
        --current-link-color: var(--dark-link-color);
        --current-border-color: var(--dark-border-color);
        --current-background-color: var(--dark-background-color);
        --current-content-background-color: var(--dark-content-background-color);
    }
    pre[class*="language-"], code[class*="language-"] {
        background-color: var(--current-background-color);
    }
}
#pixel {
    float: right;
}