/* Estilos propios de biblioteca/index.html. */

/* Reglas particulares extraídas del antiguo sistema visual. */
.eyebrow {
  display: block;
  margin: 0 0 1.3rem;
  color: var(--color-muted);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--color-text);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h1 {
  max-width: 820px;
  margin-bottom: 1.5rem;
  font-size: clamp(2.65rem, 6.3vw, 5.9rem);
  font-weight: 900;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 850;
}

.lead {
  max-width: 720px;
  margin: 0;
  color: var(--color-muted);
  font-size: clamp(1.05rem, 1.5vw, 1.2rem);
}

.section {
  padding-block: var(--space-section);
}



.page-hero .lead {
  max-width: 780px;
}

@media (max-width: 640px) {

h1 { font-size: clamp(2.35rem, 13vw, 3.7rem); }

.hero-actions .button { width: 100%; }
}

.learning-site {
  --learning-blue: #1f5fbd;
  --learning-blue-dark: #164991;
  --learning-green: #15784e;
  --learning-red: #b43b3b;
}

.learning-site [hidden] {
  display: none !important;
}

.learning-hero,
.learning-page-hero {
  padding: clamp(4.5rem, 9vw, 8rem) 0;
  background: var(--color-background);
}

.learning-hero h1,
.learning-page-hero h1,
.exam-hero h1 {
  max-width: 1050px;
  margin: 0;
  font-size: clamp(3.2rem, 8vw, 7rem);
  line-height: 0.98;
  letter-spacing: -0.065em;
}

.learning-hero .lead,
.learning-page-hero .lead {
  max-width: 820px;
  margin: clamp(1.5rem, 3vw, 2.25rem) 0 0;
  color: #3b3b37;
  font-size: clamp(1.1rem, 1.7vw, 1.35rem);
  line-height: 1.6;
}

.learning-hub {
  padding: clamp(4.5rem, 8vw, 7rem) 0;
  background: var(--color-surface);
}

.learning-section-heading {
  max-width: 870px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.learning-section-heading h2 {
  margin: 0;
  font-size: clamp(2.4rem, 5.2vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.learning-section-heading p {
  max-width: 760px;
  margin: 1rem 0 0;
  color: var(--color-muted);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
}

.learning-access-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--color-border);
  background: var(--color-border);
}

.learning-access {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  min-height: 170px;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2rem);
  padding: clamp(1.4rem, 3vw, 2.3rem);
  background: var(--color-background);
  text-decoration: none;
  transition: background-color 170ms ease, color 170ms ease;
}

.learning-access:last-child {
  grid-column: 1 / -1;
}

.learning-access:hover {
  background: var(--color-dark);
  color: var(--color-light);
}

.learning-access-symbol {
  display: grid;
  width: 68px;
  aspect-ratio: 1;
  place-items: center;
  border: 2px solid currentColor;
  border-radius: 50%;
  font-size: 2rem;
  font-weight: 750;
  line-height: 1;
}

.learning-access strong,
.learning-access small {
  display: block;
}

.learning-access strong {
  font-size: clamp(1.35rem, 2.3vw, 1.9rem);
  line-height: 1.2;
}

.learning-access small {
  max-width: 430px;
  margin-top: 0.45rem;
  color: var(--color-muted);
  font-size: 0.94rem;
  line-height: 1.5;
}

.learning-access:hover small {
  color: #d4d4ce;
}

.learning-access-arrow {
  font-size: 1.8rem;
  transition: transform 170ms ease;
}

.learning-access:hover .learning-access-arrow {
  transform: translateX(0.3rem);
}





@media (max-width: 640px) {
.learning-hero,
  .learning-page-hero,
  .exam-hero {
    padding: 3.5rem 0 4rem;
  }

.learning-hero h1,
  .learning-page-hero h1,
  .exam-hero h1 {
    font-size: clamp(3rem, 15vw, 4.5rem);
  }

.space-preview-page .learning-hero h1 {
    font-size: clamp(2.5rem, 12vw, 3.5rem);
  }

.learning-access-grid,
  .signs-memory-rule,
  .signs-tables,
  .calculator-result-grid {
    grid-template-columns: 1fr;
  }

.learning-access:last-child {
    grid-column: auto;
  }

.learning-access {
    grid-template-columns: 56px minmax(0, 1fr) auto;
    min-height: 140px;
  }

.learning-access-symbol {
    width: 54px;
    font-size: 1.6rem;
  }
}

/* Componentes modulares utilizados por esta página. */
.module-site {
  --module-accent: var(--color-text);
}