/* about.css — styles for /curriculum/about/.
 * Every selector is scoped under .about-wrap: shared stylesheets on this site
 * have leaked onto lesson pages before, and validate:about fails on a bare
 * element selector. Light-only, like the rest of the site. */

.about-wrap {
  --ink: #193e3b;
  --muted: #506662;
  --accent: #15487f;
  --border: #d2dcd7;
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
  font-family: "Hanken Grotesk", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink);
}

.about-wrap .skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  padding: 12px 16px;
  background: #fff;
  color: var(--accent);
}

.about-wrap .skip-link:focus {
  top: 8px;
}

.about-wrap a {
  color: var(--accent);
}

.about-wrap .backlink {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-bottom: 1rem;
  font-weight: 600;
  text-decoration: none;
}

.about-wrap .backlink:hover,
.about-wrap .backlink:focus-visible {
  text-decoration: underline;
}

.about-wrap header {
  margin-bottom: 1.5rem;
}

.about-wrap .page-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.about-wrap h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin: 0.5rem 0 0.25rem;
}

.about-wrap h2 {
  margin: 2rem 0 0.5rem;
  font-size: 1.5rem;
}

.about-wrap h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
}

.about-wrap .lede {
  font-size: 1.125rem;
  color: var(--muted);
  margin: 0;
}

.about-wrap .sequence {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.about-wrap .sequence li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
}

.about-wrap .sequence a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 600;
}

.about-wrap .sequence .dates {
  margin-left: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
}

.about-wrap .note {
  color: var(--muted);
}

.about-wrap .day-totals {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 12rem), 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.about-wrap .day-totals dt {
  font-size: 0.95rem;
  color: var(--muted);
}

.about-wrap .day-totals dd {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.about-wrap .samples {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 14rem), 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}

.about-wrap .samples a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  height: 100%;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  text-decoration: none;
}

.about-wrap .samples a:hover {
  border-color: var(--accent);
}

.about-wrap .samples strong {
  color: var(--accent);
}

.about-wrap .lock {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--muted);
}

.about-wrap .facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
  gap: 0.75rem;
}

.about-wrap .facts > div {
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
}

.about-wrap .facts ul {
  margin: 0;
  padding-left: 1.1rem;
}

.about-wrap .facts li {
  margin: 0.35rem 0;
}

.about-wrap :focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}