/* ================================================================
   INGESOLAR — nav.css v1.0
   Estilos del navbar y menú móvil.
   Requiere tokens.css.
   ================================================================ */

/* ─── HEADER FIJO ────────────────────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: var(--color-black);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  z-index: var(--nav-z);
}

/* ─── CONTENEDOR INTERNO ─────────────────────────────────────────── */
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* ─── LOGO ───────────────────────────────────────────────────────── */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img {
  height: 38px;
  width: auto;
}

/* ─── LINKS DE NAVEGACIÓN ────────────────────────────────────────── */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--color-text-on-dark);
  text-decoration: none;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base);
  white-space: nowrap;
}

.nav-links a:hover {
  color: var(--color-white);
}

.nav-links a.active {
  color: var(--color-solar);
  border-bottom-color: var(--color-solar);
}

/* ─── ACCIONES: CTA + HAMBURGUESA ────────────────────────────────── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  background: var(--color-solar);
  color: var(--color-black);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  border-radius: var(--radius-pill);
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-base), box-shadow var(--transition-base);
  min-height: 44px; /* touch target */
  box-shadow: var(--shadow-solar-sm);
}

.btn-nav-cta:hover {
  background: var(--color-solar-dark);
  box-shadow: var(--shadow-solar);
}

/* ─── HAMBURGUESA ────────────────────────────────────────────────── */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  /* touch target mínimo 44x44 */
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  transition: color var(--transition-base);
}

.nav-hamburger:hover {
  color: var(--color-solar);
}

.hamburger-icon {
  display: block;
  width: 26px;
  height: 26px;
  transition: transform var(--transition-base);
}

/* Rotación cuando está abierto */
.nav-hamburger[aria-expanded="true"] .hamburger-icon {
  transform: rotate(90deg);
}

/* ─── MENÚ MÓVIL ─────────────────────────────────────────────────── */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0; right: 0;
  background: var(--color-black-2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-6) var(--space-4);
  z-index: calc(var(--nav-z) - 1);
  flex-direction: column;
  gap: var(--space-1);
}

.mobile-menu.is-open {
  display: flex;
}

.mobile-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.mobile-menu a {
  display: block;
  padding: var(--space-4) 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-on-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: color var(--transition-base);
  min-height: 48px; /* touch target */
  display: flex;
  align-items: center;
}

.mobile-menu ul li:last-child a {
  border-bottom: none;
}

.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--color-solar);
}

/* CTA dentro del menú móvil */
.btn-nav-cta.mobile {
  display: flex;
  margin-top: var(--space-6);
  justify-content: center;
  border-radius: var(--radius-md);
  padding: 16px 24px;
  font-size: var(--text-md);
  font-weight: 700;
  min-height: 48px;
  align-items: center;
  box-shadow: var(--shadow-solar-sm);
  color: var(--color-black);
}

/* ─── RESPONSIVE ─────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-container { padding: 0 var(--space-4); }
}

@media (max-width: 440px) {
  /* Ocultar CTA de header en pantallas muy pequeñas (lo reemplaza el menú móvil) */
  .btn-nav-cta:not(.mobile) { display: none; }
}