/**
 * Sub Navigation Bar Component
 * Reusable sticky sub-navigation for use case pages
 */

/* ============================================
   Sub Navigation Bar
   ============================================ */

/* 
 * Fixed height values matching navbar states:
 * - Normal: ~90px (72px logo + padding)
 * - Scrolled: ~58px (50px logo + padding)
 * Transition timing matches navbar (0.3s ease)
 */

.sub-navbar {
  position: fixed;
  top: 90px; /* Normal navbar height */
  left: 0;
  right: 0;
  z-index: 998;
  background: var(--theme-glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--theme-glass-border);
  transition: top 0.3s ease; /* Same timing as navbar */
  font-family: 'Outfit', sans-serif;
}

/* When navbar is scrolled (shrunk), move sub-navbar up */
.sub-navbar.navbar-scrolled {
  top: 70px; /* Scrolled navbar height */
}

.sub-navbar-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 0 5%;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.sub-navbar-container::-webkit-scrollbar {
  display: none;
}

.sub-nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--theme-text-secondary);
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s ease;
  position: relative;
  letter-spacing: 0.3px;
}

.sub-nav-link:hover {
  color: var(--theme-text-primary);
}

.sub-nav-link.active {
  color: var(--octigen-blue);
  font-weight: 500;
}

.sub-nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - 1.5rem);
  height: 2px;
  background: var(--octigen-blue);
  border-radius: 1px 1px 0 0;
}

/* Smooth scroll behavior for pages with sub-navbar */
.has-sub-navbar {
  scroll-behavior: smooth;
}

/* Scroll offset for anchors on pages with sub-navbar */
/* 90px navbar + 40px sub-navbar + 20px buffer = 150px */
.has-sub-navbar section[id] {
  scroll-margin-top: 150px;
}

/* Extra top padding for hero to account for sub-navbar */
/* 120px base hero padding + 40px for sub-navbar = 160px */
.has-sub-navbar .hero-section {
  padding-top: 170px;
}

/* ============================================
   Sub Navigation - Responsive
   ============================================ */

@media (max-width: 991px) {
  .sub-navbar-container {
    justify-content: flex-start;
    padding: 0 4%;
  }
  
  .sub-nav-link {
    padding: 0.5rem 0.875rem;
    font-size: 0.8rem;
  }
}

@media (max-width: 576px) {
  .sub-nav-link {
    padding: 0.45rem 0.7rem;
    font-size: 0.75rem;
  }
}

/* Hide sub-navbar on mobile */
@media (max-width: 768px) {
  .sub-navbar {
    display: none;
  }
  
  /* Reduced hero padding when sub-navbar is hidden on mobile */
  .has-sub-navbar .hero-section {
    padding-top: 70px;
  }
  
  /* Revert scroll margin when sub-navbar is hidden */
  .has-sub-navbar section[id] {
    scroll-margin-top: 100px;
  }
}