/* =============================================================================
   LAYOUT GLOBAL — Header y footer
   Códigos Solares
   =============================================================================

   Compartido por todas las páginas. Se carga justo después de main.css.
   El HTML del header y del footer está copiado en cada página (sitio estático
   sin build): si cambia el menú, hay que actualizarlo en todas.

   Prefijo "site-" en todas las clases.

   #site-header  → barra charcoal en flujo normal (no fija, no superpuesta).
                   Se funde con los heros, que también son charcoal.
   #site-footer  → pie charcoal: marca + lema, navegación, contacto directo.

   Menú mobile (≤900px): sin JS los enlaces quedan siempre visibles.
   js/nav.js agrega .js-nav a <html> y recién ahí el menú se vuelve plegable.
   ============================================================================= */

/* ═══════════════════════════════════════════════════════════════════════════════
   HEADER
   ═══════════════════════════════════════════════════════════════════════════════ */

#site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background-color: var(--surface-feature);
  border-bottom: 1px solid rgba(var(--gold-leaf-rgb), 0.18);
}

.site-header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.1rem var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

/* ─── Marca ──────────────────────────────────────────────────────────────────── */
.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  flex-shrink: 0;
}

.site-brand-icon {
  width: 28px;
  height: 28px;
  object-fit: contain;
  opacity: 0.85;
}

.site-brand-name {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 400;
  font-style: italic;
  color: var(--on-feature);
  line-height: 1;
  white-space: nowrap;
}

/* ─── Navegación ─────────────────────────────────────────────────────────────── */
.site-nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.site-nav-link {
  display: inline-block;
  padding: 0.4rem 0;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: rgba(var(--on-feature-rgb), 0.72);
  border-bottom: 1px solid transparent;
  transition: color var(--ease-default), border-color var(--ease-default);
}

.site-nav-link:hover {
  color: var(--accent-text);
}

.site-nav-link[aria-current="page"] {
  color: var(--accent-text);
  border-bottom-color: rgba(var(--gold-leaf-rgb), 0.6);
}

/* CTA hacia la Formación — objetivo #1 del sitio */
.site-nav-cta {
  display: inline-block;
  padding: 0.65rem 1.4rem;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--on-accent);
  background-color: var(--accent-fill);
  background-image: var(--accent-gradient);
  box-shadow: inset 0 -2px 0 var(--accent-line);
  border: 1px solid transparent;
  transition: background-color var(--ease-default);
}

.site-nav-cta:hover {
  background-image: var(--accent-gradient-hover);
}

.site-nav-cta[aria-current="page"] {
  background-color: transparent;
  background-image: none;
  box-shadow: none;
  border-color: var(--gold-leaf);
  color: var(--accent-text);
}

.site-brand:focus-visible,
.site-nav-link:focus-visible,
.site-nav-cta:focus-visible,
.site-nav-toggle:focus-visible,
.site-footer-link:focus-visible,
.site-footer-instagram:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 4px;
}

/* ─── Botón de menú (solo mobile, solo con JS) ───────────────────────────────── */
.site-nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.9rem;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--on-feature);
  background: transparent;
  border: 1px solid rgba(var(--gold-leaf-rgb), 0.4);
  border-radius: 2px;
  cursor: pointer;
}

/* Ícono de tres líneas dibujado en CSS */
.site-nav-toggle-icon {
  position: relative;
  width: 16px;
  height: 1px;
  background-color: var(--gold-leaf);
  transition: background-color 0.2s ease;
}

.site-nav-toggle-icon::before,
.site-nav-toggle-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 16px;
  height: 1px;
  background-color: var(--gold-leaf);
  transition: transform 0.25s ease;
}

.site-nav-toggle-icon::before { transform: translateY(-5px); }
.site-nav-toggle-icon::after  { transform: translateY(5px); }

/* Abierto: las líneas forman una X */
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-icon {
  background-color: transparent;
}
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-icon::before {
  transform: rotate(45deg);
}
.site-nav-toggle[aria-expanded="true"] .site-nav-toggle-icon::after {
  transform: rotate(-45deg);
}

/* ═══════════════════════════════════════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════════════════════════════════════ */

#site-footer {
  background-color: var(--surface-feature);
  border-top: 1px solid rgba(var(--gold-leaf-rgb), 0.18);
  padding: var(--space-lg) var(--space-md) var(--space-md);
}

.site-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: start;
}

.site-footer-marca {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.site-footer-lema {
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent-text);
  line-height: 1.9;
  margin: 0;
}

.site-footer-titulo {
  display: block;
  font-family: var(--font-body);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent-text);
  margin-bottom: 1.25rem;
}

.site-footer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
}

.site-footer-link,
.site-footer-instagram {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 300;
  text-decoration: none;
  color: rgba(var(--on-feature-rgb), 0.7);
  transition: color var(--ease-default);
}

.site-footer-link:hover,
.site-footer-instagram:hover {
  color: var(--accent-text);
}

.site-footer-legal {
  max-width: 1200px;
  margin: var(--space-lg) auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(var(--gold-leaf-rgb), 0.14);
  font-family: var(--font-body);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: rgba(var(--on-feature-rgb), 0.72);
}

/* Línea de alcance: va dentro del párrafo legal, sobre el copyright */
.site-footer-alcance {
  display: block;
  margin-bottom: 0.6rem;
  font-size: 0.8rem;
  color: rgba(var(--on-feature-rgb), 0.7);
}

/* ═══════════════════════════════════════════════════════════════════════════════
   RESPONSIVE — ≤900px
   ═══════════════════════════════════════════════════════════════════════════════ */

@media (max-width: 900px) {

  .site-header-inner {
    flex-wrap: wrap;
    padding: 1rem var(--space-sm);
    gap: 1rem;
  }

  .site-nav {
    flex-basis: 100%;
  }

  .site-nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-bottom: 0.5rem;
  }

  .site-nav-link {
    display: block;
    padding: 0.9rem 0;
    font-size: 0.75rem;
    border-bottom: 1px solid rgba(var(--gold-leaf-rgb), 0.12);
  }

  .site-nav-link[aria-current="page"] {
    border-bottom-color: rgba(var(--gold-leaf-rgb), 0.12);
  }

  .site-nav-cta {
    display: block;
    margin-top: 1.25rem;
    padding: 0.9rem 1.4rem;
    text-align: center;
  }

  /* Con JS: el menú se pliega detrás del botón */
  .js-nav .site-nav-toggle {
    display: inline-flex;
  }

  .js-nav .site-nav {
    display: none;
  }

  .js-nav .site-nav.is-open {
    display: block;
  }

  #site-footer {
    padding: var(--space-lg) var(--space-sm) var(--space-md);
  }

  .site-footer-inner {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .site-footer-legal {
    margin-top: var(--space-md);
  }
}

@media (prefers-reduced-motion: reduce) {
  .site-nav-toggle-icon,
  .site-nav-toggle-icon::before,
  .site-nav-toggle-icon::after {
    transition: none;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════════
   BARRA FIJA
   El header queda siempre a la vista (position: sticky, arriba). Al bajar,
   nav.js le pone .is-compacto: se hace más delgado y gana una sombra suave.
   nav.js también publica su alto en --header-h, que usan el hero del home
   y los filtros del blog.
   ═══════════════════════════════════════════════════════════════════════════════ */

#site-header {
  transition: box-shadow var(--ease-default);
}

.site-header-inner {
  transition: padding var(--ease-default);
}

#site-header.is-compacto {
  box-shadow: 0 6px 24px rgba(var(--charcoal-rgb), 0.07);
}

#site-header.is-compacto .site-header-inner {
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
}

@media (prefers-reduced-motion: reduce) {
  #site-header,
  .site-header-inner { transition: none; }
}