[data-theme="avalon"] {
    --primary-color: #8B4513;
    --secondary-color: #D4AF37;
}

[data-theme="modern"] {
    --primary-color: #6366F1;
    --secondary-color: #10B981;
}

[data-theme="dark-fantasy"] {
    --primary-color: #7E22CE;
    --secondary-color: #E11D48;
}