/**
 * BANKAI + — NAVEGACIÓN
 */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 48px;
  padding-left: max(48px, calc((100% - var(--max-width)) / 2 + 48px));
  padding-right: max(48px, calc((100% - var(--max-width)) / 2 + 48px));
  background: linear-gradient(to bottom, rgba(8,8,8,0.96) 0%, transparent 100%);
  backdrop-filter: blur(2px);
  transition: background var(--transition-slow), backdrop-filter var(--transition-slow);
}

nav.scrolled {
  background: rgba(8,8,8,0.98);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

/* ── Logo ── */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  width: 62px;
  height: 62px;
}

.logo-mark svg {
  width: 100%;
  height: 100%;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 0.12em;
  color: var(--white);
  line-height: 1;
}

.logo-sub {
  font-size: 0.55rem;
  letter-spacing: 0.35em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-top: -2px;
}

/* ── Links de navegación ── */
.nav-links {
  display: flex;
  gap: 36px;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
}

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

.nav-cta {
  background: var(--red) !important;
  color: var(--white) !important;
  padding: 9px 22px !important;
  border-radius: var(--radius-sm) !important;
  font-weight: 600 !important;
  font-size: 0.8rem !important;
  transition: background var(--transition), transform 0.15s !important;
}

.nav-cta:hover {
  background: var(--red-hover) !important;
  transform: translateY(-1px);
  color: var(--white) !important;
}

/* ── Hamburger (móvil) ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
  z-index: 110;
  aria-label: "Abrir menú";
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--cream);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform-origin: center;
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Menú móvil overlay ── */
.nav-mobile {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(10,8,4,0.98);
  backdrop-filter: blur(16px);
  z-index: 105;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.nav-mobile.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.nav-mobile a {
  font-family: var(--font-display);
  font-size: 2.2rem;
  letter-spacing: 0.12em;
  color: var(--cream);
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--transition);
  padding: 8px 0;
}

.nav-mobile a:hover { color: var(--red); }

.nav-mobile .nav-cta-mobile {
  margin-top: 20px;
  background: var(--red);
  color: var(--white) !important;
  padding: 16px 48px;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: 1.6rem !important;
}