/* The Learn guide's words (headings and labels take the signal colour, so a page scans at a glance): headings, code, pictures, callouts, terms and tables. Scoped to
   .learn-content, which the guide's own pages give their article and the player gives the
   lightbox it shows an article in (js/pages.js), so the two look the same. */

.learn-content {
  color: var(--hb-ink-2);
  font-size: 15px;
  line-height: 1.65;
}
.learn-content .kicker {
  margin: 0 0 10px;
  font: 500 11px/1 var(--hb-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hb-accent);
}
.learn-content h1 {
  margin: 0 0 14px;
  font: 200 40px/1.05 var(--hb-sans);
  letter-spacing: -0.03em;
  color: var(--hb-ink);
}
.learn-content h2 {
  margin: 48px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--hb-line-soft);
  font: 300 24px/1.2 var(--hb-sans);
  letter-spacing: -0.02em;
  color: var(--hb-accent);
}
.learn-content h3 {
  margin: 30px 0 8px;
  font: 500 11px/1.3 var(--hb-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hb-accent);
}
.learn-content h4 {
  margin: 20px 0 6px;
  font: 500 14px/1.4 var(--hb-sans);
  color: var(--hb-ink);
}
.learn-content h2[id],
.learn-content h3[id],
.learn-content .entry {
  scroll-margin-top: calc(var(--hb-topbar) + 16px);
}
.learn-content p,
.learn-content ul,
.learn-content ol {
  margin: 0 0 12px;
}
.learn-content ul,
.learn-content ol {
  padding-left: 22px;
}
.learn-content ol {
  list-style: decimal;
}
.learn-content li {
  margin-bottom: 5px;
}
.learn-content .lede {
  margin-bottom: 20px;
  font-size: 17px;
  color: var(--hb-ink);
}
.learn-content strong {
  font-weight: 600;
  color: var(--hb-ink);
}
.learn-content code {
  padding: 1px 4px;
  border-radius: 4px;
  background: var(--hb-bg-deep);
  color: var(--hb-ink);
  font-size: 0.9em;
}
.learn-content a {
  color: var(--hb-ink);
}

/* a glossary term in the text: dotted, and the drawer opens on it */
.learn-content .term {
  color: var(--hb-ink);
  text-decoration: underline dotted;
  text-decoration-color: var(--hb-ink-4);
  text-underline-offset: 3px;
  cursor: help;
}
.learn-content .term:hover {
  text-decoration-color: var(--hb-ink);
}

/* code blocks, inked the way the stage inks the code: greys, the mini-notation brightest */
.learn-content .code {
  margin: 14px 0 20px;
  border: 1px solid var(--hb-line-soft);
  border-radius: 8px;
  background: var(--hb-bg-deep);
  overflow: hidden;
}
.learn-content .code__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--hb-line-soft);
}
.learn-content .code__title {
  font: 500 10.5px/1 var(--hb-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hb-accent);
}
.learn-content .code__open {
  display: inline-block;
  padding: 5px 11px;
  border: 1px solid var(--hb-line);
  border-radius: 999px;
  font: 500 11px/1 var(--hb-sans);
  color: var(--hb-ink);
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.15s, border-color 0.15s;
}
.learn-content .code__open:hover {
  background: var(--hb-raise);
  border-color: var(--hb-ink-4);
}
.learn-content .code pre {
  margin: 0;
  padding: 14px 16px;
  overflow-x: auto;
  font: 400 13px/1.7 var(--hb-mono);
  font-variant-ligatures: none;
  white-space: pre;
  color: var(--hb-ink-2);
  -webkit-overflow-scrolling: touch;
}
.learn-content .code code {
  padding: 0;
  background: none;
  font-size: inherit;
  color: inherit;
}
.learn-content .tok-comment {
  color: var(--hb-ink-4);
  font-style: italic;
}
.learn-content .tok-string {
  color: var(--hb-ink);
}
.learn-content .tok-number {
  color: var(--hb-ink-2);
}
.learn-content .tok-keyword {
  color: var(--hb-ink-3);
}
.learn-content .tok-label {
  color: var(--hb-ink);
  font-weight: 600;
}
.learn-content .tok-name {
  color: var(--hb-ink-2);
}
.learn-content .tok-property {
  color: var(--hb-ink-3);
}
.learn-content .tok-punct {
  color: var(--hb-ink-4);
}

/* pictures */
.learn-content {
  counter-reset: figure;
}
.learn-content .shot {
  margin: 18px 0 26px;
  counter-increment: figure;
}
.learn-content .shot img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--hb-line);
  border-radius: 8px;
  background: var(--hb-bg-deep);
}
.learn-content .shot figcaption {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--hb-ink-4);
}
.learn-content .shot figcaption::before {
  content: 'Fig. ' counter(figure) ' · ';
  font: 500 10.5px/1 var(--hb-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hb-accent);
}

/* callouts */
.learn-content .note {
  margin: 18px 0;
  padding: 12px 16px 12px 18px;
  border-left: 2px solid var(--hb-ink-4);
  border-radius: 0 8px 8px 0;
  background: var(--hb-panel);
}
.learn-content .note::before {
  content: attr(data-kind);
  display: block;
  margin-bottom: 6px;
  font: 500 10.5px/1 var(--hb-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hb-accent);
}
.learn-content .note[data-kind='caution'] {
  border-left-color: var(--hb-ink);
}
.learn-content .note > :last-child {
  margin-bottom: 0;
}

/* tables and keys */
.learn-content .ref {
  width: 100%;
  margin: 12px 0 20px;
  border-collapse: collapse;
  font-size: 14px;
}
.learn-content .ref th {
  padding: 8px 10px 8px 0;
  border-bottom: 1px solid var(--hb-line);
  text-align: left;
  font: 500 10.5px/1 var(--hb-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--hb-accent);
}
.learn-content .ref td {
  padding: 8px 10px 8px 0;
  border-bottom: 1px solid var(--hb-line-soft);
  vertical-align: top;
}
.learn-content .ref td:first-child {
  color: var(--hb-ink);
  white-space: nowrap;
}
.learn-content .keys {
  display: grid;
  gap: 8px 16px;
  margin: 10px 0 20px;
}
.learn-content .keys > div {
  display: grid;
  grid-template-columns: minmax(120px, 170px) 1fr;
  gap: 12px;
  align-items: baseline;
}
.learn-content .keys dt {
  color: var(--hb-ink);
  font-weight: 500;
}
.learn-content .keys dd {
  margin: 0;
}

/* the glossary */
.learn-content .glossary {
  margin: 0;
}
.learn-content .entry {
  padding: 16px 0;
  border-top: 1px solid var(--hb-line-soft);
}
.learn-content .entry dt {
  margin-bottom: 4px;
  font: 500 16px/1.3 var(--hb-sans);
  color: var(--hb-accent);
}
.learn-content .entry dd {
  margin: 0;
}
.learn-content .entry__more {
  margin: 4px 0 0;
  font-size: 13px;
}
.learn-content .entry__more a {
  color: var(--hb-ink-3);
}
.learn-content .entry__more a:hover {
  color: var(--hb-ink);
}

@media (max-width: 560px) {
  .learn-content h1 {
    font-size: 32px;
  }
  .learn-content h2 {
    font-size: 21px;
  }
  .learn-content .code pre {
    font-size: 12.5px;
  }
  .learn-content .keys > div {
    grid-template-columns: 1fr;
    gap: 2px;
  }
  .learn-content .ref td:first-child {
    white-space: normal;
  }
}