.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

.nav.scrolled {
  background-color: rgba(17, 17, 24, 0.92);
  border-bottom-color: rgba(79, 142, 247, 0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Logo */
.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}

.nav__logo-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav__wordmark {
  font-family: var(--font-heading);
  font-size: 18px;
  line-height: 1;
  user-select: none;
}

.nav__wordmark .silk {
  font-weight: 700;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__wordmark .lab {
  font-weight: 300;
  color: var(--color-violet);
}

/* Desktop links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav__link {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 400;
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition);
  letter-spacing: 0.01em;
}

.nav__link:hover {
  color: var(--color-fg);
  opacity: 1;
}

.nav__link.active {
  color: var(--color-blue);
}

/* Hamburger */
.nav__hamburger {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 44px;
  min-height: 44px;
  cursor: pointer;
  background: none;
  border: none;
}

.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-fg);
  transition: transform var(--transition), opacity var(--transition);
}

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

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

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

/* Mobile overlay */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 99;
  background-color: var(--color-bg);
  padding: var(--nav-height) var(--container-pad) var(--space-xl);
  flex-direction: column;
  justify-content: center;
}

.nav__mobile.open {
  display: flex;
}

.nav__mobile-links {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-xl);
}

.nav__mobile-link {
  font-family: var(--font-heading);
  font-size: clamp(28px, 8vw, 40px);
  font-weight: 700;
  color: rgba(232, 244, 255, 0.4);
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: color var(--transition);
}

.nav__mobile-link:hover,
.nav__mobile-link.active {
  color: var(--color-blue);
  opacity: 1;
}

.nav__mobile-cta {
  width: 100%;
  text-align: center;
  padding: 14px 24px;
  font-size: 15px;
}

/* Responsive */
@media (max-width: 768px) {
  .nav__links {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }
}