nav.navigation.top-bar
{
    --primary-color: #4e89a7;
    --primary-dark: #11547b;
    --light-blue: #e9f4f8;
    --text-dark: #444;
    --text-medium: #777;
    --border-light: #EAEAEA;
    --white: #ffffff;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --font-family-roboto: 'Roboto', sans-serif;
}

.header-bottom .desktop-nav-list,
.header-bottom .nav-list,
.header-bottom .desktop-submenu,
.header-bottom .submenu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.header-bottom .desktop-nav-list > li > a.desktop-nav-link,
.header-bottom .desktop-submenu li a,
.header-bottom .nav-link, 
.header-bottom .submenu li a { 
    text-decoration: none;
}

.header-bottom .desktop-arrow,
.header-bottom .desktop-submenu .desktop-arrow-nested { 
    transition: var(--transition);
    display: inline-flex; 
    align-items: center;
}

.header-bottom .desktop-arrow i,
.header-bottom .desktop-submenu .desktop-arrow-nested i {
    font-size: 0.8rem; 
    font-weight: 100;
}

.header-bottom .nav-item,
.header-bottom .nav-link, 
.header-bottom .submenu, 
.header-bottom .submenu li a {
    border-radius: 0; 
}

.header-bottom .navbar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background-color: #fff;
    position: sticky;
    top: 0;
    z-index: 1040;
}

.header-bottom .navbar-brand {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: var(--transition);
}

.header-bottom .navbar-brand:hover {
    color: var(--primary-color);
}

/* Desktop Menu */
.header-bottom .desktop-nav {
    display: none; 
    margin-right: auto;
    order: 1;
}

.header-bottom .desktop-nav-list {
    display: flex;
    align-items: center;
    font-family: var(--font-family-roboto);
}

.header-bottom .desktop-nav-list > li {
    position: relative; 
    margin-left: 0.5rem; 
}

.header-bottom .desktop-nav-list > li:first-child {
    margin-left: 0;
}

.header-bottom .desktop-nav-list > li > a.desktop-nav-link { 
    color: var(--text-dark);
    font-weight: 500;
    font-size: 15px; 
    padding: 0.5rem 0.75rem; 
    display: flex; 
    align-items: center; 
    transition: var(--transition);
    border-radius: 4px; 
    position: relative;
}

.header-bottom .desktop-nav-list > li > a.desktop-nav-link:hover,
.header-bottom .desktop-nav-list > li > a.desktop-nav-link.open {
    color: var(--primary-color);
    background-color: var(--light-blue);
}

.header-bottom .desktop-nav-list > li > a.desktop-nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
    opacity: 0;
}

.header-bottom .desktop-nav-list > li > a.desktop-nav-link:hover::after,
.header-bottom .desktop-nav-list > li > a.desktop-nav-link.open::after {
width: 70%;
opacity: 1;
}

.header-bottom .desktop-arrow {
    font-size: 0.7em;
    margin-left: 0.35rem;
    opacity: 0.7;
}

.header-bottom .desktop-nav-link.open .desktop-arrow {
    transform: rotate(180deg);
    opacity: 1;
}

.header-bottom .desktop-nav-link.open .desktop-arrow-nested {
    transform: rotate(90deg);
    opacity: 1;
}

.header-bottom .desktop-submenu {
    display: none;
    position: absolute;
    top: calc(100% + 12px); 
    left: 0; 
    background-color: #fff;
    border: 1px solid var(--border-light);
    min-width: 220px;
    z-index: 1060;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    border-radius: 6px;
    padding: 0.5rem 0;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition);
}

.header-bottom .desktop-submenu.show {
    opacity: 1;
    transform: translateY(0);
} 

.header-bottom .desktop-submenu li {
    position: relative; 
}

.header-bottom .desktop-submenu li a {
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    padding: 0.6rem 1.2rem;
    color: var(--text-dark);
    white-space: nowrap;
    font-size: 15px;
    transition: var(--transition);
    border-left: 2px solid transparent;
}

.header-bottom .desktop-submenu li a:hover,
.header-bottom .desktop-submenu li a.open {
    background-color: var(--light-blue);
    color: var(--primary-color);
    border-left: 2px solid var(--primary-color);
}

.header-bottom .desktop-submenu .desktop-arrow-nested {
    font-size: 0.7em;
    margin-left: 0.5rem;
    opacity: 0.7;
}
.header-bottom .desktop-submenu .desktop-arrow-nested i {
    transform: rotate(-90deg); 
}
.header-bottom .desktop-submenu a.open .desktop-arrow-nested {
    transform: rotate(90deg); 
    opacity: 1;
}

.header-bottom .desktop-submenu .desktop-submenu { 
    top: 0rem; 
    left: 100%; 
    border-radius: 0.25rem;
}

.header-bottom .toggler {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1052; 
    position: relative;
    margin-left: auto;
}

.header-bottom .toggler:focus {
    outline: none;
}

.header-bottom .toggler-icon {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 24px;
    height: 24px;
    position: relative;
}

.header-bottom .toggler-icon .bar {
    width: 24px;
    height: 2px;
    background-color: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
    position: absolute;
    left: 0;
}

.header-bottom .toggler-icon .bar1 { top: 5px; }
.header-bottom .toggler-icon .bar2 { top: 11px; }
.header-bottom .toggler-icon .bar3 { top: 17px; }

.menu-open .toggler-icon .bar1 {
    transform: translateY(6px) rotate(45deg);
}

.menu-open .toggler-icon .bar2 {
    opacity: 0;
}

.menu-open .toggler-icon .bar3 {
transform: translateY(-6px) rotate(-45deg);
}

.menu-open .header-bottom .toggler .bar { background-color: var(--text-dark); }

/* Mobile Menu */
.header-bottom .nav-overlay {
    position: fixed; 
    top: 200px; 
    height: calc(100vh - 200px); 
    left: 0; 
    width: 100%; 
    background-color: #fff; 
    z-index: 1050; 
    display: flex; 
    flex-direction: column;
    padding: 1rem 1.5rem; 
    opacity: 0; 
    visibility: hidden; 
    transform: translateX(100%);
    transition: var(--transition);
    overflow-y: auto; 
    pointer-events: none;
}

.header-bottom .nav-overlay::before {
    content: '';
    position: fixed;
    top: 0;
    right: 0;
    width: 60px; 
    height: 60px; 
    background-color: transparent;
    z-index: 1053;
}

.menu-open .header-bottom .nav-overlay { 
    opacity: 1; 
    visibility: visible; 
    transform: translateX(0%);
    pointer-events: auto;
}

.menu-open { overflow: hidden; }

.header-bottom .nav-list { 
    flex-grow: 1; 
    font-family: var(--font-family-roboto); 
}

.header-bottom .nav-item { 
    border-bottom: 1px solid var(--border-light); 
}
.header-bottom .nav-item:last-child { border-bottom: none; }

.header-bottom .nav-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1rem !important; 
    color: var(--text-dark);
    font-size: 1.1rem;
    font-weight: 500;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.header-bottom .submenu .nav-link {
    padding-left: 2rem !important; 
}

.header-bottom .nav-link:hover { 
    color: var(--primary-color); 
}

.header-bottom .nav-header {
    font-weight: 500;
}

.header-bottom .mobile-nav-main-arrow {
    font-size: 0.8em;
    margin-left: 0.5rem;
    transition: var(--transition);
    color: var(--text-medium);
    display: inline-block;
    transform: rotate(90deg);
}

.header-bottom .mobile-nav-main-arrow i {
    font-size: 0.8rem;
    transition: var(--transition);
    transform: rotate(90deg);
}

.header-bottom .arrow-nested {
    font-size: 0.8em;
    margin-left: 0.5rem;
    transition: var(--transition);
    color: var(--text-medium);
    display: inline-block;
}

.header-bottom .arrow-nested i {
    font-size: 0.8rem;
}

.header-bottom .submenu { 
    display: block;
    padding-bottom: 0.5rem; 
}

.header-bottom .submenu.submenu-expanded {
    display: block;
}

.header-bottom .submenu.submenu-nested {
    display: block;
}

.header-bottom .submenu .nav-link { 
    font-weight: 100;
}

.header-bottom .submenu li a { 
    display: block; 
    padding: 0.75rem 0.5rem 0.75rem 1.5rem;
    color: var(--text-medium); 
    font-size: 1rem; 
    border-bottom: 1px solid #f0f0f5;
}
.header-bottom .submenu li:last-child a { border-bottom: none; }
.header-bottom .submenu li a:hover { color: var(--primary-color); }

@media (min-width: 680px) {
   .header-bottom .nav-overlay {
        top: 200px;
        height: calc(100vh - 200px);
    }
}

/* This preserves the mobile toggler spacing as the top bar columns shift around. */
@media (min-width: 712px) {
    .header-bottom .nav-overlay {
        top: 158px;
        height: calc(100vh - 158px);
    }
}




@media (min-width: 992px) {
    .header-bottom .nav-overlay {
        top: 130px;
        height: calc(100vh - 130px);
    }
    .header-bottom .nav-link {
        padding-left: 0.5rem !important;
        padding-right: 0.5rem !important;
    }
    .header-bottom .toggler { display: none; }
    .header-bottom .desktop-nav { display: flex; align-items: center; }
    .menu-open .header-bottom .nav-overlay {
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
    }
}