@media (prefers-color-scheme: light) {
  :root {
    --primary-text: #000;
    --secondary-text: #333;
    --primary-bkg: #FFF;
    --aside-bkg: #EEE;
    --link-text: #423eda;

    --code-token-comment: hsl(230, 4%, 64%);
    --code-token-constant: hsl(35, 99%, 36%);
    --code-token-string: hsl(119, 34%, 47%);
    --code-token-keyword: hsl(301, 63%, 40%);
    --code-token-function: hsl(221, 87%, 60%);
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --primary-text: #EEE;
    --secondary-text: #BBB;
    --primary-bkg: #141414;
    --aside-bkg: #222;
    --link-text: #7d7fff;

    --code-token-comment: hsl(220, 10%, 40%);
    --code-token-constant: hsl(29, 54%, 61%);
    --code-token-string: hsl(95, 38%, 62%);
    --code-token-keyword: hsl(286, 60%, 67%);
    --code-token-function: hsl(207, 82%, 66%);
  }

  .diagram {
    filter: invert(100%);
  }
}

:root {
    --max-width: 800px;
    --aside-note-color: #A00;
    --aside-info-color: #0AA;
}

/* Colors */

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

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

a:hover {
  color: var(--link-text);
  text-decoration: underline;
}

html {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'PT Sans', 'Open Sans', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: var(--primary-text);
  background-color: var(--primary-bkg);
  line-height: 1.4;
}

body {
  margin: 1.2em;
  font-size: 21px;
}

/* Align body elements */

p, h1, h2, h3, h4, h5, h6, ol, ul, header, footer, aside, blockquote, pre, img {
  margin-left: auto;
  margin-right: auto;
  max-width: var(--max-width);

  pre {
    max-width: initial;
  }
}

pre {
  padding: 4px 0px;
}

/* Typography */

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
}

aside {
  box-sizing: border-box;
  padding: 16px;
  background-color: var(--aside-bkg);
  border-radius: 1px;
}

aside .callout-title {
  margin: 0px;
}

aside .callout-symbol {
  margin-right: 8px;
}

aside.callout-aside, aside.callout-note {
  border-left: 3px solid var(--aside-note-color);
}

aside.callout-aside .callout-symbol {
  color: var(--aside-note-color);
}

aside.callout-info {
  border-left: 3px solid var(--aside-info-color);
}

aside.callout-info .callout-symbol {
  color: var(--aside-info-color);
}

aside p:first-child {
  margin-top: 0px;
}

aside p:last-child {
  margin-bottom: 0px;
}

blockquote {
  padding: 4px 0px;
  font-style: italic;

    p {
      padding: 0px 16px;
    }
}

/* PAGE HEADER */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.page-header * {
  margin: 0;
}

.header-links * {
  margin-left: 1em;
}


/* post-feed */

.post-feed {
  padding: 0px;
}

.post-feed-entry {
  list-style: none;
  margin-bottom: 4px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.post-feed-entry a {
  font-weight: bold;
}

.post-feed-entry time {
  line-height: 1;
  font-size: 15px;
  color: var(--secondary-text);
}

@media only screen and (max-width: 768px) {
  .post-feed-entry {
    display: block;
  }

  .post-feed-entry a {
    margin-top: 2px;
    margin-bottom: 0px;
  }
}