.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  transition: background var(--duration-base) var(--ease-smooth);
}

.site-nav.scrolled {
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo-text {
  font-family: var(--font-serif);
  font-size: var(--fs-md);
  color: var(--color-champagne);
  letter-spacing: var(--ls-wide);
  font-weight: var(--fw-light);
}

.nav-hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  padding: var(--space-sm);
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--color-champagne);
  transition: all var(--duration-base) var(--ease-smooth);
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Menú desplegable */
.nav-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(280px, 80vw);
  z-index: calc(var(--z-nav) + 1);
  background: var(--color-black);
  border-left: 1px solid rgba(245, 236, 215, 0.1);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-2xl) var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--duration-base) var(--ease-out);
}

.nav-menu.open {
  transform: translateX(0);
}

.nav-menu-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  color: var(--color-champagne);
  font-size: var(--fs-md);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-menu ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.nav-menu a {
  font-family: var(--font-serif);
  font-size: var(--fs-xl);
  color: var(--color-champagne);
  font-weight: var(--fw-light);
  letter-spacing: var(--ls-wide);
  transition: color var(--duration-base) var(--ease-smooth);
}

.nav-menu a:hover {
  color: var(--color-champagne-deep);
}

/* Overlay oscuro */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: var(--z-nav);
  background: rgba(13, 13, 13, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) var(--ease-smooth);
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: all;
}

/* CTA flotante */
.cta-floating {
  position: fixed;
  bottom: var(--space-lg);       /* ← menos espacio */
  right: var(--space-lg);
  z-index: var(--z-cta);
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-black);
  background: var(--color-champagne);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  transition: all var(--duration-base) var(--ease-smooth);
  max-width: calc(100vw - var(--space-2xl));  /* ← no se sale en mobile */
}

.cta-floating:hover {
  background: var(--color-champagne-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}