.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-navbar);
  padding: var(--space-4) 0;
  background: transparent;
  transition: background var(--duration-normal) var(--ease-out),
              padding var(--duration-normal) var(--ease-out),
              backdrop-filter var(--duration-normal) var(--ease-out);
}

.navbar.scrolled {
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--glass-border);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 1px;
}

.nav-logo .logo-k {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-logo .logo-map {
  color: var(--text-primary);
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--duration-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 1px;
  transition: width var(--duration-fast) var(--ease-out);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  padding: var(--space-2) var(--space-5);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(108, 60, 225, 0.4);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: calc(var(--z-navbar) + 1);
}

.hamburger-bar {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--duration-fast) var(--ease-out),
              opacity var(--duration-fast) var(--ease-out);
  transform-origin: center;
}

.hamburger.active .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.hamburger.active .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 26, 0.97);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  z-index: var(--z-navbar);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.mobile-menu.open {
  display: flex;
  opacity: 1;
  pointer-events: all;
}

.mobile-menu .nav-link {
  font-size: var(--text-2xl);
  font-family: var(--font-heading);
}

.mobile-menu .nav-cta {
  font-size: var(--text-lg);
  padding: var(--space-3) var(--space-7);
  margin-top: var(--space-4);
}