* { 
  box-sizing: border-box; 
  margin: 0; 
  padding: 0; 
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: #f4f6f9;
  min-height: 100vh;
  /* Adds space at the top so body content isn't hidden behind the fixed elements */
  padding-top: 120px; 
}

/* Dummy announcement space for the top 60px gap */
.top-banner-space {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 60px;
  background-color: #0f243d;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  z-index: 1001;
}

/* Navbar Wrapper Container (60px From Top) */
.navbar-container {
  position: fixed;
  top: 60px; /* FIXED: Pushes the container below the 60px banner */
  left: 0;
  width: 100%;
  z-index: 1000;
}

/* Core Navbar Component Styles */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 2rem;
  background-color: #ffffff; /* FIXED: Changed from transparent to avoid scroll overlap text issues */
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  position: relative;
}

.nav-logo img {
  height: 40px;
  display: block;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 1.5rem;
}

.nav-link {
  text-decoration: none;
  color: #333333;
  font-weight: 500;
  padding: 0.5rem 0;
  display: flex;
  align-items: center;
  transition: color 0.3s ease;
}

.nav-link:hover { 
        background-color: #1a3e68;
      color: #ffffff;
}

/* Desktop Dropdown System */
.nav-item.dropdown { 
  position: relative; 
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: #ffffff; /* FIXED: Changed from transparent to prevent invisible lists */
  min-width: 160px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  list-style: none;
  padding: 0.5rem 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s;
}

.dropdown-menu li a {
  display: block;
  padding: 0.6rem 1.2rem;
  color: #333333;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.02rem;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.dropdown-menu li a:hover {
        background-color: #1a3e68;
      color: #ffffff;
}

.nav-item.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.arrow {
  font-size: 0.75rem;
  margin-left: 4px;
}

/* Search Container */
.nav-search { 
  display: flex; 
  align-items: center; 
}

.nav-search input {
  padding: 0.4rem 0.8rem;
  border: 1px solid #ccc;
  border-radius: 4px 0 0 4px;
  outline: none;
  font-size: 0.9rem;
}

.nav-search button {
  padding: 0.4rem 0.8rem;
  border: 1px solid #ccc;
  border-left: none;
  background-color: #f8f9fa;
  border-radius: 0 4px 4px 0;
  cursor: pointer;
}

/* Mobile Toggle Mechanism (Pure CSS) */
.menu-toggle-cb { 
  display: none; 
}

.menu-icon { 
  display: none; 
  cursor: pointer; 
  padding: 1rem 0; 
}

.navicon {
  background: #333;
  display: block;
  height: 2px;
  position: relative;
  width: 24px;
  transition: background 0.2s ease-out;
}

.navicon:before, .navicon:after {
  background: #333;
  content: '';
  display: block;
  height: 100%;
  position: absolute;
  width: 100%;
  transition: all 0.2s ease-out;
}

.navicon:before { top: 6px; }
.navicon:after { bottom: 6px; }

/* Responsive Navigation Media Queries */
@media (max-width: 768px) {
  .navbar { 
    flex-wrap: wrap; 
    padding: 0.5rem 1rem; 
  }
  
  .menu-icon { 
    display: block; 
    order: 1; 
  }
  
  .nav-logo { 
    order: 0; 
  }
  
  .nav-search { 
    order: 3; 
    width: 100%; 
    margin-top: 0.75rem; 
  }
  
  .nav-search input { 
    flex: 1; 
  }

  .nav-menu {
    display: none;
    order: 2;
    width: 100%;
    flex-direction: column;
    gap: 0;
    background-color: #ffffff;
    border-top: 1px solid #eee;
    margin-top: 0.5rem;
  }

  .nav-item { 
    width: 100%; 
    border-bottom: 1px solid #f5f5f5; 
  }
  
  .nav-link { 
    padding: 0.75rem 0.5rem; 
    width: 100%; 
    justify-content: space-between; 
  }
  
  .dropdown-menu {
    position: static;
    box-shadow: none;
    background-color: #f9f9f9;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transform: none;
    transition: max-height 0.3s ease-out;
  }

  .menu-toggle-cb:checked ~ .nav-menu { 
    display: flex; 
  }
  
  .nav-item.dropdown:hover .dropdown-menu { 
    max-height: 300px; 
  }
  
  .menu-toggle-cb:checked ~ .menu-icon .navicon { 
    background: transparent; 
  }
  
  .menu-toggle-cb:checked ~ .menu-icon .navicon:before { 
    transform: rotate(-45deg); 
    top: 0; 
  }
  
  .menu-toggle-cb:checked ~ .menu-icon .navicon:after { 
    transform: rotate(45deg); 
    bottom: 0; 
  }
  
  body { 
    overflow-y: auto; 
  }
}