/* Navigation Bar Styles */
#mainNav {
    transition: var(--transition-normal);
    background-color: transparent !important;
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
    font-family: var(--font-heading);
    font-weight: 700;
}

#mainNav.navbar-shrink {
    background-color: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-md);
    padding-top: 0.75rem !important;
    padding-bottom: 0.75rem !important;
}

#mainNav .navbar-brand {
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--primary-600) !important;
}

#mainNav .nav-link {
    font-weight: 600;
    color: var(--slate-700) !important;
    padding: 0.5rem 1rem !important;
    transition: var(--transition-fast);
}

#mainNav .nav-link:hover,
#mainNav .nav-link.active,
#mainNav .nav-link:focus {
    color: var(--primary-600) !important;
    outline: none !important;
}

/* Mobile Toggler */
.navbar-toggler {
    border: none !important;
    padding: 0.5rem !important;
    background: none !important;
    box-shadow: none !important;
    color: var(--slate-700) !important;
    font-size: 1.25rem !important;
    font-family: var(--font-heading) !important;
    font-weight: 700 !important;
}

.navbar-toggler .fas {
    color: var(--slate-700) !important;
}

.navbar-toggler:hover .fas {
    color: var(--primary-600) !important;
}

.navbar-toggler:hover {
    opacity: 0.8;
    color: var(--primary-600) !important;
}

/* Specific Toggler Icon for Light Mode */
.navbar-toggler-icon {
    filter: invert(0.2);
    /* Ensure visibility on light bg */
}

/* Light Mode Specific Overrides */
#mainNav.navbar-light-mode .navbar-brand {
    color: var(--primary-600) !important;
}

#mainNav.navbar-light-mode .nav-link {
    color: var(--slate-700) !important;
}

#mainNav.navbar-light-mode .navbar-toggler .fas {
    color: var(--slate-700) !important;
}

/* Mobile Navigation Enhancements */
@media (max-width: 991.98px) {
    #mainNav .navbar-collapse {
        background-color: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(15px);
        -webkit-backdrop-filter: blur(15px);
        margin-top: 1rem;
        padding: 1.5rem;
        border-radius: 1.25rem;
        box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1), 0 5px 15px rgba(0, 0, 0, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.5);
        text-align: center;
    }

    #mainNav .nav-link {
        padding: 0.75rem 1rem !important;
        border-radius: 0.75rem;
    }

    #mainNav .nav-link:hover {
        background-color: rgba(11, 92, 255, 0.05);
    }
}