.site-header {
    border-bottom: 1px solid #e8e8e8;
    min-height: 60px;
    background-color: #fff;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.site-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.site-title {
    font-size: 26px;
    font-weight: 600;
    margin: 0;
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.site-title:hover {
    color: #3498db;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-link {
    font-size: 16px;
    color: #34495e;
    text-decoration: none;
    padding: 5px 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #3498db;
    text-decoration: none;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: #3498db;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

/* Add margin to main content to prevent overlap with fixed header */
.main-content {
    margin-top: 80px;
}

/* Responsive menu */
.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 24px;
}

@media screen and (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background-color: #fff;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    }

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