.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), backdrop-filter var(--transition-base);
}

.nav.scrolled {
  background: rgba(18, 18, 18, 0.82);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom: 1px solid rgba(242, 237, 227, 0.08);
  box-shadow: 0 1px 24px rgba(0,0,0,0.28);
}

.nav__inner {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

@media (max-width: 1023px) {
  .nav__inner {
    padding: 0 var(--space-4);
  }
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--text-light);
  letter-spacing: 0.02em;
  flex-shrink: 0;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

@media (max-width: 1023px) {
  .nav__links {
    display: none;
  }
}

.nav__links a {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-light);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.nav__links a:hover {
  opacity: 1;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  padding: 0.6rem 1.4rem;
  background-color: var(--text-light);
  color: var(--text-dark);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: 100px;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav__cta:hover {
  background-color: var(--accent-gold);
  color: var(--text-dark);
}

/* ── Hambúrguer ── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  cursor: pointer;
  padding: 4px;
}

@media (max-width: 1023px) {
  .nav__hamburger {
    display: flex;
  }

  .nav__actions .nav__cta {
    display: none;
  }
}

.nav__hamburger span {
  display: block;
  width: 100%;
  height: 1.5px;
  background-color: var(--text-light);
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.nav__hamburger.is-open span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

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

.nav__hamburger.is-open span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Menu mobile — painel lateral ── */
.nav__mobile {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(260px, 75vw);
  z-index: var(--z-drawer);
  background: var(--bg-dark);
  border-left: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-8) var(--space-4);
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(.22,.61,.36,1);
  pointer-events: none;
}

.nav__mobile.is-open {
  transform: translateX(0);
  pointer-events: all;
}

/* Backdrop escuro atrás do painel */
.nav__mobile::before {
  content: '';
  position: fixed;
  inset: 0;
  right: min(260px, 75vw);
  background: rgba(0,0,0,0.5);
  opacity: 0;
  transition: opacity 0.35s ease;
  pointer-events: none;
}

.nav__mobile.is-open::before {
  opacity: 1;
  pointer-events: all;
}

.nav__mobile-link {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-light);
  opacity: 0.85;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-dark);
  width: 100%;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

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

.nav__mobile-link:hover {
  color: var(--accent-gold);
  opacity: 1;
}

.nav__mobile .nav__cta {
  margin-top: var(--space-6);
  width: 100%;
  justify-content: center;
  font-size: var(--text-sm);
  padding: 0.85rem 1.5rem;
}

@media (max-width: 400px) {
  .nav__mobile .nav__cta {
    padding: 0.85rem 0.9rem;
    letter-spacing: 0.04em;
  }
}