/* Theme of the pages */
html {
  background-color: var(--background);
  font-family: var(--font-family);
}

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

body,
a {
  color: var(--font-color);
  font-size: var(--font-size);
  hyphens: auto;
}

a {
  transition: opacity 0.2s;
}

a:hover {
  opacity: 0.6;
}

main {
  position: relative;
  font-size: var(--font-size);
  padding: 2em 1em;
  margin: 0 auto;
  max-width: 640px; /* breakpoint */
}

/* Navigation bar across all of the pages */
header nav {
  text-align: center;
}

header nav li {
  display: inline-block;
}

/* Maybe do this only with 'large' screens */
header nav p::after {
  content: "·";
  padding: 10px;
}

/* breakpoint */
@media only screen and (max-width: 640px) {
  header nav p::after {
    padding: 6px;
  }
}

header nav li:last-child p::after {
  content: "";
}

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

header nav a:hover {
  text-decoration: underline;
}

.bold {
  font-weight: bold;
}

@media print {
  /* Hide navigation header */
  header nav {
    display: none;
  }

  /* Better colors for paper */
  html {
    color: black;
    background-color: white;
  }

  /* Add links */
  a:not(:where([href^="#"], [href^="/"])):not(:has(img)):not(:has(svg))::after {
    content: " (" attr(href) ")";
    display: inline-block;
    white-space: pre;
    color: mediumblue;
  }

  a {
    text-underline-position: under;
  }
}

@media (prefers-color-scheme: dark) {
  img,
  svg {
    filter: brightness(0.8) contrast(1.2);
  }
}