/* SETTINGS */
:root {
  /* Background Colors: */
  --background-color: #2bff00;
  --content-background-color: #1f2320;
  --sidebar-background-color: #2a262c;

  /* Text Colors: */
  --text-color: #40f000;
  --sidebar-text-color: #00ff1e;
  --link-color: #57a94c;
  --link-color-hover: #2d4c20;

  /* Other Settings: */
  --font: Monaco, monospace;
  --heading-font: Lucida Console, monospace;
  --font-size: 14px;
  --margin: 10px;
  --padding: 20px;
  --border: 2px solid #000000;
  --round-borders: 0px;
  --sidebar-width: 200px;
}

/* -------------------------------------------------------- */
/* BASICS */

body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--background-color);
  background-image: url("https://gifs.crd.co/assets/images/gallery07/1608666c.gif?v=ef433a6f");
  
  min-height: 100vh;
  font-size: var(--font-size);
  margin: 0;
  padding: var(--margin);
  color: var(--text-color);
  font-family: var(--font);
  line-height: 1.2;
}

::selection {
  background: rgba(0, 0, 0, 0.2);
}

a {
  text-decoration: underline;
}

a,
a:visited {
  color: var(--link-color);
}

a:hover,
a:focus {
  color: var(--link-color-hover);
  text-decoration: none;
}

/* -------------------------------------------------------- */
/* LAYOUT */

.layout {
  display: grid;
  grid-gap: var(--margin);
  max-width: 1200px;
  grid-template: "header header header" auto "leftSidebar main rightSidebar" auto "footer footer footer" auto / var(--sidebar-width) auto var(--sidebar-width);
}

header {
  grid-area: header;
  font-size: 1.2em;
  border: var(--border);
  border-radius: var(--round-borders);
  overflow: hidden;
  background: var(--content-background-color);
}

.header-content {
  padding: var(--padding);
}

.header-title {
  font-family: var(--heading-font);
  font-size: 1.5em;
  font-weight: bold;
}

.header-image img {
  width: 100%;
  height: auto;
}

aside {
  grid-area: aside;
  border: var(--border);
  border-radius: var(--round-borders);
  overflow: hidden;
  background: var(--sidebar-background-color);
  padding: var(--padding);
  color: var(--sidebar-text-color);
}

.left-sidebar {
  grid-area: leftSidebar;
}

.right-sidebar {
  grid-area: rightSidebar;
}

.sidebar-title {
  font-weight: bold;
  font-size: 1.2em;
  font-family: var(--heading-font);
}

.sidebar-section:not(:last-child) {
  margin-bottom: 3em;
}

.sidebar-section ul,
.sidebar-section ol {
  padding-left: 1.5em;
}

.sidebar-section > *:not(p):not(ul):not(ol):not(blockquote) {
  margin-top: 10px;
}

.sidebar-section blockquote {
  background: rgba(0, 0, 0, 0.1);
  padding: 15px;
  margin: 1em 0;
  border-radius: 10px;
  overflow: hidden;
}

.sidebar-section blockquote > *:first-child {
  margin-top: 0;
}

.sidebar-section blockquote > *:last-child {
  margin-bottom: 0;
}

.site-button {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.site-button textarea {
  font-family: monospace;
  font-size: 0.7em;
}

main {
  grid-area: main;
  overflow-y: auto;
  padding: var(--padding);
  background: var(--content-background-color);
  border: var(--border);
  border-radius: var(--round-borders);
}

footer {
  grid-area: footer;
  border: var(--border);
  border-radius: var(--round-borders);
  overflow: hidden;
  font-size: 0.75em;
  padding: 15px;
  background: var(--content-background-color);
  display: flex;
  justify-content: center;
}

footer a,
footer a:visited {
  color: var(--link-color);
}

footer a:hover,
footer a:focus {
  color: var(--link-color-hover);
}

/* -------------------------------------------------------- */
/* NAVIGATION */

nav {
  margin-bottom: 3em;
}

nav .sidebar-title {
  margin-bottom: 0.5em;
}

nav ul {
  margin: 0 -5px;
  padding: 0;
  list-style: none;
  user-select: none;
}

nav ul li {
  margin-bottom: 0;
}

nav ul li > a {
  display: inline-block;
}

nav ul li > a,
nav ul li summary {
  padding: 5px 10px;
}

nav ul li > a.active,
nav ul li summary.active {
  font-weight: bold;
}

nav ul summary {
  cursor: pointer;
}

/* (submenu) */
nav ul ul li > a {
  padding-left: 30px;
}

header nav {
  margin-bottom: 0;
}

header nav ul {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
}

header nav ul li:first-child > a {
  padding-left: 0;
}

header nav ul li:last-child > a {
  padding-right: 0;
}

/* -------------------------------------------------------- */
/* ACCESSIBILITY */

#skip-to-content-link {
  position: fixed;
  top: 0;
  left: 0;
  display: inline-block;
  padding: 0.375rem 0.75rem;
  line-height: 1;
  font-size: 1.25rem;
  background-color: var(--content-background-color);
  color: var(--text-color);
  transform: translateY(-3rem);
  transition: transform 0.1s ease-in;
  z-index: 99999999999;
}

#skip-to-content-link:focus,
#skip-to-content-link:focus-within {
  transform: translateY(0);
}

/* -------------------------------------------------------- */
/* CONTENT */

main {
  line-height: 1.5;
}

main a,
main a:visited {
  color: var(--link-color);
}

main a:hover,
main a:focus {
  color: var(--link-color-hover);
  text-decoration-style: wavy;
}

main p,
main .image,
main .full-width-image,
main .two-columns {
  margin: 0.75em 0;
}

main ol,
main ul {
  margin: 0.5em 0;
  padding-left: 1.5em;
}

main ol li,
main ul li {
  margin-bottom: 0.2em;
  line-height: 1.3;
}

main ol {
  padding-left: 2em;
}

main blockquote {
  background: rgba(0, 0, 0, 0.1);
  padding: 15px;
  margin: 1em 0;
  border-radius: 10px;
}

main pre {
  margin: 1em 0 1.5em;
}

main code {
  text-transform: none;
}

main center {
  margin: 1em 0;
  padding: 0 1em;
}

main hr {
  border: 0;
  border-top: 2px dotted green;
  margin: 1.5em 0;
}

main h1,
main h2,
main h3,
main h4,
main h5,
main h6 {
  font-family: var(--heading-font);
  margin-bottom: 0;
  line-height: 1.5;
}

main h1:first-child,
main h2:first-child,
main h3:first-child,
main h4:first-child,
main h5:first-child,
main h6:first-child {
  margin-top: 0;
}

main h1 {
  font-size: 1.5em;
}

main h2 {
  font-size: 1.4em;
}

main h3 {
  font-size: 1.3em;
}

main h4 {
  font-size: 1.2em;
}

main h5 {
  font-size: 1.1em;
}

main h6 {
  font-size: 1em;
}

.two-columns {
  display: flex;
}

.two-columns > * {
  flex: 1 1 0;
  margin: 0;
}

.two-columns > *:first-child {
  padding-right: 0.75em;
}

.two-columns > *:last-child {
  padding-left: 0.75em;
}

/* -------------------------------------------------------- */
/*  CONTENT IMAGES */

.image {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
}

.full-width-image {
  display: block;
  width: 100%;
  height: auto;
}

.images {
  display: flex;
}

.images .image {
  margin: 0;
}

.images img {
  width: 50%;
  padding: 5px;
}

/* -------------------------------------------------------- */
/* 	MOBILE RESPONSIVE */

@media (max-width: 800px) {
  body {
    font-size: 14px;
  }

  .layout {
    width: 100%;
    grid-template: "header" auto  "leftSidebar" auto "main" auto "footer" auto / 1fr;
  }

  
  .right-sidebar { display: none; }

  aside {
    border-bottom: 1px solid;
    padding: 9px;
    font-size: 0.9em;
  }

  

  nav {
    padding: 0;
  }

  nav > ul {
    padding-top: 0.5em;
  }

  nav > ul li > a,
  nav > ul li summary {
    padding: 0.5em;
  }

  main {
    max-height: none;
    padding: 15px;
  }

  .images {
    flex-wrap: wrap;
  }

  .images img {
    width: 100%;
  }

  #skip-to-content-link {
    font-size: 1rem;
  }
}