.loading { opacity: 0; }
h1, h2, h3, h4, h5, h6 { 
  font-weight: 700; 
  margin: 0;
  padding: .25em 0;
  border: none;
  border-bottom: .1rem solid var(--foreground);
  text-align: center;
}
h1 { font-size: 2.25em; }
h2 { font-size: 2em; }
h3 { font-size: 1.75em; }
h4 { font-size: 1.5em; }
h5 { font-size: 1.25em; }
h6 { font-size: 1em; }
small { 
  display: block;
  font-size: 0.5em; 
  font-style: italic;
}

header, footer {
  background: var(--background-contrast);
  color: var(--foreground-contrast);
  padding: 0 1em;
}

a {
  color: inherit;
  text-decoration: none;
}

nav a {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 1em;
  margin: 0;
  transition: background 0.3s;
}

nav a:hover {
  background: rgba(255, 255, 255, 0.1);
}

code-sample > code[slot=format]:not(specific) {
  display: block;
  min-height: min-content;
  min-width: max-content;
  white-space: pre;
  padding: 0.5em 1em;
  border-radius: 0.75em;
  box-shadow: .5em .5em .5em rgba(0,0,0,0.5);
  font-size: .75em;
}

article { 
  align-items: center;
}

ul {
  flex: 0;
  padding: 0;
  min-width: max-content;
}

ul > ul {
  padding-left: 1em;
}

.button {
  background-image: none;
  background: color-mix(in srgb, var(--accent), var(--background) 50%);
  color: var(--foreground);
  font-size: 2em;
  padding: 0.5em 1em;
  border: .2rem solid var(--accent);
  border-radius: 0.5rem;
  cursor: pointer;
  transition: background 0.3s;
  text-decoration: none;
  box-shadow: inset .25rem .25rem .25rem 0px rgba(0, 0, 0, 0.25), 
              inset -.25rem -.25rem .25rem 0px rgba(0, 0, 0, 0.25);
}

.button:hover {
  background: color-mix(in srgb, var(--accent), var(--background) 75%);
}

hr {
  min-width: 100%;
  border-color: var(--foreground);
}

code-sample > [slot=output] {
  position: relative;
  display: block;
  padding: 3em 7em;
  margin: 1em 0;
  border-radius: 1em;
  border: .2em solid var(--accent);
  overflow: hidden;
  min-height: max-content;
  min-width: min-content;
  font-size: .75em;
}

code-sample > [slot=output]::before {
  font-size: .75em;
  content: 'Live Sample';
  display: block;
  position: absolute;
  left: 0; top: 0;
  padding: 0.5em 1em;
  font-style: italic;
  background: var(--background-contrast);
  color: var(--foreground-contrast);
  border-radius: 0 0 1em 0;
  box-shadow: .25em .25em .25em rgba(0,0,0,0.5);
  opacity: 0.5;
}

blockquote {
  border-radius: 0.5rem;
  border: .1rem solid var(--highlight);
  background: var(--background-contrast);
  color: var(--foreground-contrast);
  padding: 0.5em 1em;
  margin: 0.5em 1em;
  box-shadow: .3rem .3rem .3rem rgba(0, 0, 0, 0.5);
}