/* ==========================================================================
   SITE HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 13, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

/* ADA Compliant Brand Logo Presentation */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  border-radius: var(--radius-sm);
  padding: var(--space-2xs) var(--space-xs);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.brand-logo:hover {
  opacity: 0.92;
  transform: translateY(-1px);
}

.brand-logo:focus-visible {
  outline: 2px solid var(--text-accent);
  outline-offset: 4px;
}

.brand-logo img {
  height: 56px;
  width: auto;
  object-fit: contain;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: 800;
  color: #ffffff;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

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

.nav-link {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  padding: var(--space-xs) 0;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

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

.nav-cta {
  background: var(--accent-gradient);
  color: #ffffff !important;
  padding: var(--space-xs) var(--space-lg);
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--text-sm);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(56, 189, 248, 0.5);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
  min-height: 44px;
  min-width: 44px;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xs);
  border-radius: var(--radius-sm);
}