/* Header Styles */
.header {
  position: relative;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-bottom: 2px solid var(--border-medium);
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-light);
  z-index: var(--z-fixed);
}

/* These classes are no longer used for sticky behavior but kept for compatibility */
.header.scrolled {
  background-color: var(--bg-primary);
}

.header.transparent {
  background-color: var(--bg-primary);
}

.navbar {
  position: relative;
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  min-height: 70px;
}

/* Logo/Brand */
.navbar-brand {
  flex-shrink: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.brand-link:hover {
  opacity: 0.8;
}

.brand-container {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.brand-logo {
  height: clamp(40px, 4vw, 55px);
  width: auto;
  transition: all var(--transition-medium);
  display: block;
  filter: drop-shadow(0 2px 4px rgba(23, 16, 68, 0.1));
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-name {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 800;
  color: var(--navy-primary);
  line-height: 1;
  letter-spacing: -0.5px;
}

.brand-tagline {
  font-size: clamp(0.6rem, 1.2vw, 0.75rem);
  font-weight: 500;
  color: var(--navy-medium);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1;
}

.brand-link:hover .brand-logo {
  transform: scale(1.05);
  filter: drop-shadow(0 4px 8px rgba(23, 16, 68, 0.15));
}

.brand-link:hover .brand-name {
  color: var(--navy-dark);
}

.brand-link:hover .brand-tagline {
  color: var(--navy-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-fixed);
  position: relative;
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background-color: var(--primary-color);
  border-radius: 2px;
  transition: all var(--transition-fast);
  transform-origin: center;
}

.mobile-menu-toggle.active .hamburger-line:first-child {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active .hamburger-line:last-child {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Navigation Menu */
.navbar-menu {
  display: flex;
  align-items: center;
}

.navbar-nav {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-lg);
}

.nav-item {
  position: relative;
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-primary);
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-medium);
  white-space: nowrap;
  background: none;
  border: 2px solid transparent;
  cursor: pointer;
  position: relative;
}

.nav-icon {
  font-size: 1rem;
  opacity: 0.8;
  transition: all var(--transition-medium);
}

.nav-text {
  transition: all var(--transition-medium);
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--navy-medium), var(--navy-primary));
  transition: all var(--transition-medium);
  transform: translateX(-50%);
}

.nav-link:hover,
.nav-link:focus {
  color: var(--primary-color);
  background: linear-gradient(135deg, var(--bg-secondary), rgba(158, 191, 229, 0.1));
  border-color: var(--border-medium);
  transform: translateY(-1px);
}

.nav-link:hover .nav-icon {
  opacity: 1;
  transform: scale(1.1);
}

.nav-link:hover::before {
  width: 80%;
}

.nav-link.active {
  color: var(--primary-color);
  background: linear-gradient(135deg, var(--secondary-light), var(--navy-medium));
  border-color: var(--navy-medium);
}

.nav-link.active::before {
  width: 100%;
}

/* Dropdown Styles */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.dropdown-arrow {
  font-size: 0.75rem;
  transition: transform var(--transition-fast);
}

.dropdown.active .dropdown-arrow {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-large);
  padding: var(--space-md) 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px) scale(0.95);
  transition: all var(--transition-medium);
  z-index: var(--z-dropdown);
  margin: 0;
  backdrop-filter: blur(10px);
}

.dropdown:hover .dropdown-menu,
.dropdown.active .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  text-transform: none;
  letter-spacing: 0.2px;
  transition: all var(--transition-medium);
  border-radius: var(--radius-md);
  margin: 0 var(--space-sm);
  position: relative;
}

.dropdown-icon {
  font-size: 0.9rem;
  opacity: 0.7;
  transition: all var(--transition-medium);
}

.dropdown-text {
  flex: 1;
}

.dropdown-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 0;
  height: 2px;
  background: var(--navy-medium);
  transition: width var(--transition-medium);
  transform: translateY(-50%);
  border-radius: 1px;
}

.dropdown-link:hover,
.dropdown-link:focus {
  color: var(--primary-color);
  background: linear-gradient(135deg, var(--bg-secondary), rgba(158, 191, 229, 0.1));
  padding-left: var(--space-xl);
}

.dropdown-link:hover .dropdown-icon {
  opacity: 1;
  transform: scale(1.1);
}

.dropdown-link:hover::before {
  width: 4px;
}

/* Responsive Styles */
@media (max-width: 992px) {
  .brand-container {
    gap: var(--space-sm);
  }
  
  .brand-logo {
    height: clamp(35px, 4vw, 45px);
  }
  
  .brand-text {
    display: none; /* Hide text on medium screens */
  }
}

@media (max-width: 768px) {
  .mobile-menu-toggle {
    display: flex;
  }

  .navbar-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 350px;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for modern browsers */
    max-height: 100vh; /* Fallback max-height */
    max-height: 100dvh; /* Dynamic max-height for mobile */
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-large);
    transition: right var(--transition-medium);
    padding: 80px var(--space-lg) var(--space-lg);
    overflow-y: auto;
    z-index: var(--z-modal);
  }

  .navbar-menu.active {
    right: 0;
  }

  .navbar-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav-item {
    width: 100%;
    border-bottom: 1px solid var(--border-light);
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-link {
    padding: var(--space-lg) 0;
    justify-content: flex-start;
    font-size: var(--font-size-base);
    gap: var(--space-md);
  }
  
  .nav-icon {
    font-size: 1.2rem;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: var(--bg-secondary);
    margin-top: var(--space-sm);
    border-radius: var(--radius-md);
    display: none;
  }

  .dropdown.active .dropdown-menu {
    display: block;
  }

  .dropdown-link {
    padding: var(--space-md) var(--space-lg);
    font-size: var(--font-size-sm);
    gap: var(--space-md);
  }
  
  .dropdown-icon {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .navbar-content {
    padding: var(--space-sm) 0;
    min-height: 60px;
  }

  .brand-logo {
    height: 35px;
    max-width: 160px;
  }

  .navbar-menu {
    max-width: 100%;
    padding: 70px var(--space-md) var(--space-md);
  }

  /* Extra defensive measures for very small viewports */
  .mobile-menu-toggle {
    z-index: var(--z-modal); /* Ensure hamburger is always clickable */
    pointer-events: auto;
  }
}

/* Animation for mobile menu overlay */
@media (max-width: 768px) {
  .navbar-menu::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for mobile */
    background-color: rgba(0, 0, 0, 0.5);
    z-index: -1;
    opacity: 0;
    pointer-events: none; /* CRITICAL FIX: Don't block clicks when invisible */
    transition: opacity var(--transition-medium);
  }

  .navbar-menu.active::before {
    opacity: 1;
    pointer-events: auto; /* Allow clicks on backdrop when menu is open */
  }
}