/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 68px;
  display: flex;
  align-items: center;
  padding: 0 var(--space-8);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  transition:
    background var(--duration-normal),
    border-color var(--duration-normal);
}
.nav.scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-color: var(--border);
  box-shadow: var(--shadow-sm);
}
.nav-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.nav-logo img {
  height: 60px;
  width: auto;
  object-fit: contain;
}
.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1;
}
.nav-logo-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue-900);
  letter-spacing: -0.02em;
}
.nav-logo-tagline {
  font-size: 0.625rem;
  color: var(--gray-500);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition:
    color var(--duration-fast),
    background var(--duration-fast);
}
.nav-links a:hover {
  color: var(--primary);
  background: var(--blue-50);
}
.nav-links a.active {
  color: var(--primary);
}
.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.btn-nav {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--white);
  background: var(--blue-700);
  padding: 0.5rem 1.125rem;
  border-radius: var(--radius-sm);
  transition:
    background var(--duration-fast),
    transform var(--duration-fast);
}
.btn-nav:hover {
  background: var(--blue-800);
  transform: translateY(-1px);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 24px;
  cursor: pointer;
  padding: var(--space-2);
}
.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition:
    transform var(--duration-normal),
    opacity var(--duration-normal);
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 900px) {
  .nav {
    padding: 0 var(--space-5);
  }
  .nav-links {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4) var(--space-5);
    gap: var(--space-1);
    box-shadow: var(--shadow-md);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: var(--space-3) var(--space-4);
    font-size: 0.9375rem;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-cta .btn-nav {
    display: none;
  }
}