/* ============================================================
   NAVBAR
   ============================================================ */

/* Teal accent bar at top of viewport */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--color-primary) 30%, var(--color-primary-light) 60%, transparent 100%);
  z-index: calc(var(--z-nav) + 1);
  pointer-events: none;
}

.navbar {
  position: fixed;
  top: 2px;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--space-5) 0;
  transition: padding var(--transition-base),
              background var(--transition-base),
              backdrop-filter var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  padding: var(--space-3) 0;
  background: rgba(2, 20, 49, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--glass-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.navbar__logo img {
  height: 28px;
  width: auto;
}

/* Nav links */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
}

.navbar__links a {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-white-60);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.navbar__links a:hover,
.navbar__links a.active {
  color: var(--color-white);
  background: var(--glass-bg);
}

.navbar__links a.active {
  color: var(--color-primary-light);
}

/* CTA */
.navbar__cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Mobile hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast);
  padding: 0;
}

.navbar__hamburger:hover {
  background: var(--glass-bg-hover);
}

.navbar__hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-white-80);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
  transform-origin: center;
}

.navbar__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.navbar__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu */
.navbar__mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(2, 20, 49, 0.97);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: var(--space-4) 0 var(--space-6);
  flex-direction: column;
  gap: var(--space-1);
}

.navbar__mobile-menu.open {
  display: flex;
}

.navbar__mobile-menu a {
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-white-60);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.navbar__mobile-menu a:hover {
  color: var(--color-white);
  background: var(--glass-bg);
}

.navbar__mobile-menu .btn {
  margin: var(--space-4) var(--space-6) 0;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 900px) {
  .navbar__links,
  .navbar__cta .btn--ghost {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }

  .navbar__cta .btn--primary {
    display: none;
  }
}