/* Header styles, building on base.css */
.site-header {
    background-color: #fff;
    color: var(--color-clean-white);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo a {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-electric-cyan);
    text-decoration: none;
}

.primary-nav {
    display: flex;
}

.nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
}

.nav-list a {
    color: var(--color-clean-white);
    text-decoration: none;
    font-family: 'Roboto', sans-serif;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-list a:hover, .nav-list a:focus {
    color: var(--color-soft-green);
    outline: 2px solid var(--color-electric-cyan);
    outline-offset: 2px;
}

.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--color-clean-white);
    font-size: 1.5rem;
    cursor: pointer;
}

.hamburger:focus {
    outline: 2px solid var(--color-electric-cyan);
    outline-offset: 2px;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .primary-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--color-graphite-gray);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s;
    }

    .primary-nav.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
                width: 100%;
        background: #fff;
    }

    .nav-list {
        flex-direction: column;
        padding: 1rem;
        gap: 1rem;
    }

    .hamburger {
        display: block;
    }
}