.site-header {
    background-color: #0c4a6e;
    color: white;
    padding: 15px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.logo {
    width: 100px;
}

/* Navigation styles */
.main-nav {
    display: flex;
    gap: 20px;
}

.main-nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
}

.main-nav a:hover {
    text-decoration: underline;
}

/* Hamburger button */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle .hamburger,
.nav-toggle .hamburger::before,
.nav-toggle .hamburger::after {
    display: block;
    background-color: white;
    height: 3px;
    width: 25px;
    border-radius: 3px;
    position: relative;
    transition: all 0.3s ease;
}

.nav-toggle .hamburger::before,
.nav-toggle .hamburger::after {
    content: '';
    position: absolute;
}

.nav-toggle .hamburger::before {
    top: -8px;
}

.nav-toggle .hamburger::after {
    top: 8px;
}

/* Mobile styles */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .main-nav {
        position: absolute;
        top: 60px;
        right: 20px;
        background-color: #0c4a6e;
        flex-direction: column;
        width: 200px;
        border-radius: 5px;
        display: none; /* hide by default */
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        z-index: 1000;
    }

    .main-nav.active {
        display: flex;
    }

    .main-nav a {
        padding: 15px 20px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    }

    .main-nav a:last-child {
        border-bottom: none;
    }
}

/* Extra-small devices (max-width: 480px) */
@media (max-width: 480px) {
    .logo {
        width: 80px;
    }

    .main-nav {
        width: 160px;
        top: 55px;
        right: 10px;
    }

    .main-nav a {
        padding: 12px 15px;
        font-size: 0.9rem;
    }

    .nav-toggle .hamburger,
    .nav-toggle .hamburger::before,
    .nav-toggle .hamburger::after {
        width: 20px;
        height: 2.5px;
    }

    .nav-toggle .hamburger::before {
        top: -6px;
    }

    .nav-toggle .hamburger::after {
        top: 6px;
    }
}