.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  transition: background-color var(--transition-base),
              backdrop-filter var(--transition-base),
              border-color var(--transition-base);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background-color: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  line-height: 0;
}

.nav-logo img {
  height: 40px;
  width: auto;
}

.nav-links {
  display: none;
  list-style: none;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  letter-spacing: 0.01em;
}

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

.nav-cta {
  display: none;
  padding: 0.5rem 1.25rem;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--bg-primary);
  background-color: var(--accent);
  border-radius: 6px;
  transition: background-color var(--transition-fast),
              transform var(--transition-fast);
}

@media (min-width: 768px) {
  .nav-cta {
    display: inline-block;
  }
}

.nav-cta:hover {
  background-color: var(--accent-dim);
  transform: translateY(-1px);
}

/* Mobile menu toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

@media (min-width: 768px) {
  .nav-toggle {
    display: none;
  }
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast),
              opacity var(--transition-fast);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-overlay);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--space-6) var(--space-4);
  z-index: 99;
}

.nav-mobile.open {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.nav-mobile a {
  font-family: var(--font-body);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.nav-mobile .nav-cta-mobile {
  display: inline-block;
  width: fit-content;
  margin-top: var(--space-4);
  padding: 0.75rem 2rem;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--bg-primary);
  background-color: var(--accent);
  border-radius: 6px;
}