.header {
    background-color: #D1DCE5; /* Solid, professional Steel Blue */
    background-image: none;
    border-bottom: 2px solid #2C3E50; /* A dark slate anchor line */
}

/* Dark text for maximum readability on the Steel Blue background */
.navbar-brand a, 
.container-nav .nav-link {
    color: #2C3E50 !important; 
    font-weight: 600;
}

/* Use the Teal from your logo as the interaction color */
.container-nav .nav-link:hover {
    color: #16A085 !important;
}

/* Subtle shadow to give the header some depth */
.header {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}