/* Navbar — Excavaciones BCN */

#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-overlay);
  height: var(--navbar-height);
  display: flex;
  align-items: center;
  transition:
    top    400ms cubic-bezier(0.16, 1, 0.3, 1),
    left   400ms cubic-bezier(0.16, 1, 0.3, 1),
    right  400ms cubic-bezier(0.16, 1, 0.3, 1),
    height 400ms cubic-bezier(0.16, 1, 0.3, 1),
    border-radius 400ms cubic-bezier(0.16, 1, 0.3, 1),
    background    300ms ease,
    backdrop-filter 300ms ease,
    box-shadow    300ms ease,
    transform     300ms ease;
}

/* Modo burbuja flotante al hacer scroll */
#navbar.scrolled {
  top: 10px;
  left: 20px;
  right: 20px;
  height: 62px;
  border-radius: 100px;
  background: rgba(12, 10, 6, 0.96);
  backdrop-filter: blur(28px) saturate(200%);
  -webkit-backdrop-filter: blur(28px) saturate(200%);
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.55),
    0 0 0 1px rgba(212, 117, 10, 0.14),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* Ocultar al bajar — suficiente para ambos estados (normal y burbuja) */
#navbar.hidden { transform: translateY(calc(-100% - 20px)); }

@media (max-width: 768px) {
  #navbar.scrolled {
    left: 10px;
    right: 10px;
    border-radius: 60px;
    top: 8px;
    height: var(--navbar-height);
  }
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* ── Logo ── */
.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 0;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo__name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-text);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  transition: color var(--transition-fast);
}
.nav-logo__name strong { color: var(--color-primary); }
.nav-logo__tagline {
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: 1;
  margin-top: 3px;
}
.nav-logo:hover .nav-logo__name { color: var(--color-primary); }

/* ── Links de navegación ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-link {
  position: relative;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
  white-space: nowrap;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: var(--space-3);
  right: var(--space-3);
  height: 1.5px;
  background: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}
.nav-link:hover { color: var(--color-text); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--color-text); }
.nav-link.active::after { transform: scaleX(1); }

/* ── Dropdown servicios ── */
.nav-dropdown {
  position: relative;
}
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 240px;
  background: var(--color-surface-overlay);
  border: 1px solid var(--color-border-emphasis);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
  box-shadow: var(--shadow-xl);
}
/* Puente invisible que cubre el gap de 8px entre el link y el menú */
.nav-dropdown-menu::before {
  content: '';
  position: absolute;
  top: -10px;
  left: 0;
  right: 0;
  height: 10px;
}
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-dropdown-item:hover {
  background: rgba(212, 117, 10, 0.08);
  color: var(--color-text);
}
.nav-dropdown-item svg { width: 16px; height: 16px; color: var(--color-primary); flex-shrink: 0; }

/* ── CTA en navbar ── */
.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* ── Hamburger (móvil) ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: var(--space-2);
  justify-content: center;
  align-items: center;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}
.nav-toggle:hover { background: var(--color-surface-raised); }
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ── Mobile drawer ── */
.nav-mobile {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-background);
  z-index: calc(var(--z-overlay) - 1);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  overflow-y: auto;
}
.nav-mobile.open { transform: translateX(0); }
.nav-mobile-link {
  padding: var(--space-4) var(--space-2);
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--weight-extrabold);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  transition: color var(--transition-fast);
}
.nav-mobile-link:hover { color: var(--color-primary); }
.nav-mobile .btn { margin-top: var(--space-6); width: 100%; justify-content: center; }