.header {
    background: #fff;
    padding: 15px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 1px;
}

.logo-accent {
    color: var(--primary-color);
}

.nav a {
    text-decoration: none;
    color: var(--text-color);
    margin: 0 15px;
    font-weight: 500;
    transition: var(--transition);
}

.nav a:hover {
    color: var(--primary-color);
}

.phone {
    text-decoration: none;
    color: var(--dark-bg);
    font-weight: bold;
    margin-right: 15px;
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
}