body.theme-classic {
    --theme-primary: #0f4fd6;
    --theme-accent: #f97316;
}

body.theme-classic .btn-dark {
    background-color: var(--theme-primary);
    border-color: var(--theme-primary);
}

body.theme-classic .header-middle {
    background: linear-gradient(90deg, #0d1f45, #13336a);
}