/* Sección Learning: usa los tokens de styles.css (--accent-primary, --glass-*, --text-*) */
.lrn { max-width: 860px; margin: 0 auto; padding: 8rem 1.25rem 5rem; display: flex; flex-direction: column; gap: 3rem; }
.lrn h1 { font-size: clamp(2.1rem, 6vw, 3.4rem); line-height: 1.1; letter-spacing: -0.02em; text-wrap: balance; }
.lrn h2 { font-size: 1.45rem; line-height: 1.25; margin-bottom: 0.6rem; text-wrap: balance; }
.lrn h3 { font-size: 1.15rem; margin: 1.2rem 0 0.4rem; }
.lrn p, .lrn li { color: rgba(255, 255, 255, 0.82); line-height: 1.75; font-size: 1.02rem; }
.lrn a { color: var(--accent-primary); }
.lrn code { font-family: ui-monospace, Consolas, monospace; font-size: 0.9em; background: rgba(0, 240, 255, 0.08); border: 1px solid rgba(0, 240, 255, 0.18); border-radius: 6px; padding: 0.1em 0.4em; overflow-wrap: anywhere; }
.lrn-eyebrow { font-size: 0.72rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent-primary); margin-bottom: 0.6rem; }
.lrn-muted { color: var(--text-muted) !important; }
.lrn-lead { font-size: 1.15rem !important; color: var(--text-muted) !important; max-width: 40rem; margin-top: 1rem; }
.lrn-accent { background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }

/* nav: enlaces de marca y acceso móvil (styles.css oculta .nav-links bajo 992px) */
.lrn-brand { color: var(--text-main); text-decoration: none; white-space: nowrap; }
.navbar .nav-container { gap: 2rem; }
@media (max-width: 600px) { .lrn-brand { font-size: 1.05rem; letter-spacing: 0.08em; } }

/* fondo semiopaco para leer cómodo sobre el canvas de partículas */
.lrn-hero, .lrn-phase, .lrn-article { background: rgba(5, 9, 20, 0.8); border-radius: 16px; padding: 2rem; }
@media (max-width: 600px) { .lrn-hero, .lrn-phase, .lrn-article { padding: 1.25rem; } }
.lrn-mobile-link { display: none; color: var(--accent-primary); text-decoration: none; font-weight: 600; font-size: 0.9rem; letter-spacing: 0.06em; text-transform: uppercase; }
@media (max-width: 992px) { .lrn-mobile-link { display: inline-block; } }

/* portada */
.lrn-phase { display: flex; flex-direction: column; gap: 0.4rem; }
.lrn-days { display: grid; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); gap: 1rem; margin-top: 1rem; }
.lrn-day { display: flex; flex-direction: column; gap: 0.35rem; padding: 1.2rem; border-radius: 12px; border: 1px dashed rgba(255, 255, 255, 0.14); color: var(--text-muted); text-decoration: none; min-width: 0; }
.lrn-day.is-pub { border: 1px solid var(--glass-border); background: var(--glass-bg); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); color: var(--text-main); transition: border-color .25s ease, transform .25s ease; }
.lrn-day.is-pub:hover { border-color: rgba(0, 240, 255, 0.5); transform: translateY(-3px); }
.lrn-day-n { font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--accent-primary); font-weight: 600; }
.lrn-day-t { font-family: 'Outfit', sans-serif; font-size: 1.15rem; font-weight: 500; }
.lrn-day-h { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; }

/* artículo */
.lrn-article { display: flex; flex-direction: column; gap: 2rem; }
.lrn-article > .btn-outline { align-self: flex-start; }
.lrn-back { font-size: 0.9rem; text-decoration: none; }
.lrn-oneliner { padding: 1.5rem; }
.lrn-oneliner p { font-family: 'Outfit', sans-serif; font-size: 1.3rem; line-height: 1.45; color: var(--text-main); }
.lrn-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); gap: 1.5rem; }
.lrn-analogy { border-left: 3px solid var(--accent-primary); padding: 0.4rem 0 0.4rem 1.25rem; }
.lrn-analogy p { font-size: 1.12rem; color: var(--text-main); }
.lrn-body { display: flex; flex-direction: column; gap: 0.9rem; }
.lrn-body h2 { margin-top: 1.2rem; }
.lrn-body ul, .lrn-body ol { padding-left: 1.4rem; display: flex; flex-direction: column; gap: 0.35rem; }
.lrn-body li > ul, .lrn-body li > ol { margin-top: 0.35rem; }
.lrn-body li::marker { color: var(--accent-primary); }
.lrn-glossary { width: 100%; border-collapse: collapse; }
.lrn-glossary th, .lrn-glossary td { text-align: left; padding: 0.7rem 0.6rem; border-bottom: 1px solid rgba(255, 255, 255, 0.08); vertical-align: top; line-height: 1.5; }
.lrn-glossary th { font-family: 'Outfit', sans-serif; font-weight: 500; color: var(--accent-primary); width: 38%; overflow-wrap: anywhere; }
.lrn-glossary td { color: rgba(255, 255, 255, 0.82); }
.lrn-cta { padding: 1.75rem; display: flex; flex-direction: column; gap: 0.75rem; align-items: flex-start; }
.lrn-cta h2 { margin: 0; font-family: ui-monospace, Consolas, monospace; font-size: 1.2rem; }
.lrn-pager { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: 1.5rem; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.lrn-pager a { text-decoration: none; max-width: 48%; }

@media (max-width: 600px) {
  .lrn { padding-top: 6.5rem; gap: 2.25rem; }
  .lrn-pager a { max-width: 100%; }
  .lrn-glossary th { width: 45%; }
}

/* bloques de código */
.lrn pre { background: #0b1222; border: 1px solid rgba(0, 240, 255, 0.18); border-radius: 12px; padding: 1rem 1.1rem; overflow-x: auto; }
.lrn pre code { background: none; border: 0; padding: 0; font-size: 0.92rem; line-height: 1.6; color: #e6edf3; overflow-wrap: normal; white-space: pre; }

/* versión técnica del artículo */
.lrn-toc { padding: 1.4rem 1.6rem; }
.lrn-toc ol { padding-left: 1.3rem; display: flex; flex-direction: column; gap: 0.35rem; }
.lrn-toc a { text-decoration: none; }
.lrn-toc li::marker { color: var(--accent-primary); font-family: 'Outfit', sans-serif; }
.lrn-tecnico .lrn-body h2 { padding-top: 0.6rem; border-top: 1px solid rgba(255, 255, 255, 0.08); scroll-margin-top: 6rem; }
.lrn-tecnico .lrn-body h3 { color: var(--accent-primary); font-size: 1.1rem; }
.lrn-table-wrap { overflow-x: auto; }
.lrn-table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
.lrn-table th, .lrn-table td { text-align: left; padding: 0.6rem 0.7rem; border-bottom: 1px solid rgba(255, 255, 255, 0.08); vertical-align: top; line-height: 1.5; }
.lrn-table th { font-family: "Outfit", sans-serif; font-weight: 500; color: var(--accent-primary); }
.lrn-table td { color: rgba(255, 255, 255, 0.82); }
.lrn-body blockquote { border-left: 3px solid var(--accent-secondary); padding: 0.3rem 0 0.3rem 1rem; color: var(--text-muted); }

/* Ruta MERN: tarjeta del curso en la portada y lista del proyecto */
.lrn-course { display: flex; flex-direction: column; gap: 0.5rem; padding: 1.75rem 2rem; border-radius: 16px; text-decoration: none; color: var(--text-main); border: 1px solid rgba(0, 240, 255, 0.45); background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(0, 85, 255, 0.12)), rgba(5, 9, 20, 0.85); transition: transform .25s ease, border-color .25s ease; }
.lrn-course:hover { transform: translateY(-3px); border-color: var(--accent-primary); }
.lrn-course .lrn-eyebrow { margin-bottom: 0; }
.lrn-course-t { font-family: 'Outfit', sans-serif; font-size: clamp(1.35rem, 4vw, 1.8rem); font-weight: 500; line-height: 1.2; text-wrap: balance; }
.lrn-course-go { color: var(--accent-primary); font-weight: 600; margin-top: 0.4rem; }
@media (max-width: 600px) { .lrn-course { padding: 1.25rem; } }
.lrn-checks { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.4rem; margin: 0.6rem 0; }
.lrn-checks li { padding-left: 1.6rem; position: relative; }
.lrn-checks li::before { content: "✓"; position: absolute; left: 0; color: var(--accent-primary); font-weight: 700; }
.lrn-self { align-self: flex-start; margin-top: 0.6rem; }