/* ═══════════════════════════════════════════════════════
   nav.css — Barra de navegación principal
   B&R Maestranza · Bacian y Rocha Ltda.
═══════════════════════════════════════════════════════ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  padding: 0 3rem;
  background: transparent;
  transition:
    background var(--transition),
    box-shadow var(--transition);
}

/* Estado: scrolled */
.nav--scrolled {
  background: var(--navy);
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-badge {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--white);
  line-height: 1;
}

.nav__logo-badge em {
  color: var(--orange);
  font-style: normal;
}

.nav__logo-sub {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--gray-mid);
  text-transform: uppercase;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
  padding-left: 10px;
}

/* Links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav__link {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  position: relative;
  transition: color var(--transition);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--orange);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--white);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

/* CTA button en nav */
.nav__cta {
  flex-shrink: 0;
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  cursor: pointer;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
}

/* Menú móvil */
.nav__mobile {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: var(--navy);
  z-index: 999;
  border-top: 2px solid var(--orange);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.nav__mobile.is-open {
  display: flex;
}

.nav__mobile-link {
  display: block;
  padding: 1rem 2rem;
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: color var(--transition), background var(--transition);
}

.nav__mobile-link:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.04);
}

.nav__mobile-link:last-child {
  border-bottom: none;
}

/* Responsive */
@media (max-width: 900px) {
  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav {
    padding: 0 1.5rem;
  }
}