/* ═══════════════════════════════════════════════════════════
   HEADER / NAV — .header .nav
   ═══════════════════════════════════════════════════════════ */

.header {
  position: sticky;
  top: 0;
  z-index: var(--bb-z-sticky);
  background-color: var(--bb-color-gray-10); /* Gris sólido 10% */
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/* Removida animación de scroll para el header */
.header.is-scrolled {
  box-shadow: none;
}

.nav {
  width: 100%;
}

.nav__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--bb-container-max);
  margin: 0 auto;
  padding: var(--bb-space-4) var(--bb-space-6);
  gap: var(--bb-space-8);
}

/* Brand / Logo */
.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--bb-space-2);
  text-decoration: none;
  color: var(--bb-text-primary);
  flex-shrink: 0;
}

.nav__logo-text {
  font-size: var(--bb-text-xl);
  color: var(--bb-color-blue-primary);
  line-height: 1;
  transition: transform var(--bb-duration-base) var(--bb-ease-spring);
}

.nav__brand:hover .nav__logo-text {
  transform: rotate(-15deg) scale(1.2);
}

.nav__logo-wrapper {
  height: 32px;
  display: flex;
  align-items: center;
  transition: transform var(--bb-duration-base) var(--bb-ease-out);
}

.nav__logo-img {
  height: 32px;
  width: auto;
  display: block;
}

.nav__brand-name {
  font-size: var(--bb-text-sm);
  font-weight: var(--bb-weight-bold);
  letter-spacing: var(--bb-tracking-widest);
  color: var(--bb-text-primary);
}

/* Links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--bb-space-8);
  list-style: none;
}

.nav__link {
  font-size: var(--bb-text-sm);
  font-weight: var(--bb-weight-medium);
  letter-spacing: var(--bb-tracking-wide);
  color: var(--bb-text-secondary);
  text-decoration: none;
  position: relative;
  transition: color var(--bb-duration-base) var(--bb-ease-out);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--bb-color-blue-primary);
  transition: width var(--bb-duration-slow) var(--bb-ease-out);
}

.nav__link:hover {
  color: var(--bb-text-primary);
}

.nav__link:hover::after {
  width: 100%;
}

/* Hamburger toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--bb-space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--bb-text-primary);
  border-radius: var(--bb-radius-full);
  transition:
    transform var(--bb-duration-base) var(--bb-ease-out),
    opacity var(--bb-duration-base) var(--bb-ease-out);
}

/* Hamburger activo */
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ─── Responsive Nav ──────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: fixed;
    inset: 0;
    top: 64px;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: var(--bb-space-12);
    padding-left: var(--bb-space-8);
    gap: var(--bb-space-6);
    background-color: var(--bb-color-gray-10);
    transform: translateX(100%);
    transition: transform var(--bb-duration-slow) var(--bb-ease-out);
    border-top: 1px solid var(--bb-color-surface-high);
    overflow-y: auto;
  }

  .nav__links.is-open {
    transform: translateX(0);
  }

  .nav__link {
    font-size: var(--bb-text-xl);
    font-weight: var(--bb-weight-light);
  }
}