<nav class="tv-webcore-sidebar tv-webcore-sidebar--grey" aria-label="Site menu">
  <h3 class="tv-webcore-sidebar-title">navigation</h3>
  <ul class="tv-webcore-sidebar-list">
    <li><a class="tv-webcore-sidebar-link" href="#" aria-current="page">home</a></li>
    <li><a class="tv-webcore-sidebar-link" href="#">about me</a></li>
    <li><a class="tv-webcore-sidebar-link" href="#">art gallery</a></li>
    <li><a class="tv-webcore-sidebar-link" href="#">guestbook</a></li>
  </ul>
  <h4 class="tv-webcore-sidebar-heading">elsewhere</h4>
  <ul class="tv-webcore-sidebar-list">
    <li><a class="tv-webcore-sidebar-link" href="#">webring</a></li>
    <li><a class="tv-webcore-sidebar-link" href="#">cool sites</a></li>
  </ul>
</nav>

/* A framed side menu: a title strip, links with pixel bullets, and the current page in navy. */
.tv-webcore-sidebar {
  --tv-webcore-sidebar-face: var(--tv-webcore-pink, #f7b5e4);
  box-sizing: border-box;
  width: 100%;
  max-width: 14rem;
  margin: 0 auto;
  padding: 0 4px 6px;
  border: 1px solid var(--tv-webcore-navy, #2c2b9f);
  background: var(--tv-webcore-paper, #ffffff);
  color: var(--tv-webcore-navy, #2c2b9f);
  font: 14px/1.3 "Lucida Console", "Courier New", ui-monospace, monospace;
  letter-spacing: 0.03em;
  box-shadow: 4px 4px 0 color-mix(in srgb, var(--tv-webcore-navy, #2c2b9f) 25%, transparent);
}

.tv-webcore-sidebar-title {
  margin: 0 -4px 6px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--tv-webcore-navy, #2c2b9f);
  background-color: var(--tv-webcore-sidebar-face, #f7b5e4);
  background-image: radial-gradient(color-mix(in srgb, var(--tv-webcore-paper, #ffffff) 70%, transparent) 1px, transparent 1.3px);
  background-size: 4px 4px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.tv-webcore-sidebar-heading {
  margin: 10px 6px 4px;
  padding-top: 8px;
  border-top: 1px dotted var(--tv-webcore-navy, #2c2b9f);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.tv-webcore-sidebar-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Each link gets a two-pixel-square bullet that turns into an arrow on the current page. */
.tv-webcore-sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 2.25rem;
  padding: 0 8px;
  color: inherit;
  text-decoration: none;
}

.tv-webcore-sidebar-link::before {
  content: "";
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  background: var(--tv-webcore-sidebar-face, #f7b5e4);
  box-shadow: 0 0 0 1px var(--tv-webcore-navy, #2c2b9f);
}

.tv-webcore-sidebar-link:hover {
  background: color-mix(in srgb, var(--tv-webcore-sidebar-face, #f7b5e4) 45%, var(--tv-webcore-paper, #ffffff));
}

.tv-webcore-sidebar-link[aria-current="page"] {
  background: var(--tv-webcore-navy, #2c2b9f);
  color: var(--tv-webcore-paper, #ffffff);
}

.tv-webcore-sidebar-link[aria-current="page"]::before {
  width: 0;
  height: 0;
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  border-left: 6px solid var(--tv-webcore-paper, #ffffff);
  background: none;
  box-shadow: none;
}

.tv-webcore-sidebar-link:focus-visible {
  outline: 2px dashed var(--tv-webcore-navy, #2c2b9f);
  outline-offset: -3px;
}

.tv-webcore-sidebar-link[aria-current="page"]:focus-visible {
  outline-color: var(--tv-webcore-paper, #ffffff);
}

.tv-webcore-sidebar--lilac {
  --tv-webcore-sidebar-face: var(--tv-webcore-lilac, #a49bf3);
}

.tv-webcore-sidebar--grey {
  --tv-webcore-sidebar-face: var(--tv-webcore-grey, #d9d9e5);
}