.header {
    position: relative;
    width: 100%;
    background-color: #ffffff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    height: 80px; /* Fixed height */
    display: flex;
    align-items: center;
}

.header-content {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 2rem;
    height: 80px; /* Fixed height */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #0a2540;
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav a {
    color: #4a5568;
    text-decoration: none;
    font-weight: 500;
}

.nav a:hover {
    color: #4169e1;
}

.nav .external-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.nav .external-link i {
    font-size: 0.8em;
}

.nav .external-link:hover i {
    transform: translateX(2px);
    transition: transform 0.2s ease;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: #4a5568;
    font-size: 1.2rem;
}

.social-links a:hover {
    color: #4169e1;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        height: auto;
        padding: 1rem 2rem;
    }
    
    .header {
        height: auto;
        min-height: 80px;
    }
    
    .nav {
        margin: 0.5rem 0;
    }
}