/* =============================================
   NAVBAR
============================================= */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 1.75rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transform: translateY(0);
  transition: background 0.5s var(--ease), padding 0.4s var(--ease),
              border-color 0.5s, transform 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(0,0,0,0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1.1rem 3rem;
  border-bottom-color: rgba(201,169,110,0.1);
}
.nav.nav-hidden { transform: translateY(-100%); }

.nav-logo {
  display: flex;
  align-items: center;
  line-height: 1;
  transition: opacity 0.3s;
}
.nav-logo:hover { opacity: 0.7; }
.nav-logo svg { width: 130px; height: auto; display: block; }

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.88rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gray-300);
  transition: color 0.3s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -5px; left: 0;
  width: 0; height: 1px;
  background: var(--gold);
  transition: width 0.35s var(--ease);
}
.nav-links a:hover { color: var(--white); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--white); }

.nav-cotizar {
  color: var(--gold) !important;
  border: 1px solid rgba(201,169,110,0.45);
  padding: 0.4rem 1.1rem;
}
.nav-cotizar::after { display: none !important; }
.nav-cotizar:hover {
  color: var(--black) !important;
  background: var(--gold);
}

/* =============================================
   HAMBURGER
============================================= */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1100;
}
.hamburger span {
  display: block;
  width: 28px; height: 2px;
  background: var(--white);
  transition: all 0.35s var(--ease);
  transform-origin: center;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================
   MOBILE OVERLAY MENU
============================================= */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--black);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s var(--ease);
}
.mobile-menu.open { opacity: 1; pointer-events: all; }

.m-link {
  font-family: var(--serif);
  font-size: clamp(2rem, 6vw, 3rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--white);
  opacity: 0;
  transform: translateY(-18px);
  transition: color 0.3s,
              opacity  0.4s var(--ease),
              transform 0.4s var(--ease);
}
.m-link:hover { color: var(--gold); }

.mobile-menu.open .m-link              { opacity: 1; transform: translateY(0); }
.mobile-menu.open .m-link:nth-child(1) { transition-delay: 0.08s; }
.mobile-menu.open .m-link:nth-child(2) { transition-delay: 0.16s; }
.mobile-menu.open .m-link:nth-child(3) { transition-delay: 0.24s; }
.mobile-menu.open .m-link:nth-child(4) { transition-delay: 0.32s; }

.mobile-menu-sub {
  font-family: var(--sans);
  font-size: 0.68rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: 2rem;
  opacity: 0;
  transform: translateY(-12px);
  transition: opacity 0.4s var(--ease), transform 0.4s var(--ease);
}
.mobile-menu.open .mobile-menu-sub {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.42s;
}

/* =============================================
   RESPONSIVE — NAV
============================================= */
@media (max-width: 768px) {
  .nav { padding: 1.4rem 1.5rem; }
  .nav.scrolled { padding: 0.9rem 1.5rem; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
}