:root {
    --bg-color-dark: #101419;
    --text-color-dark: #E0E0E0;
    --header-bg-dark: rgba(26, 26, 26, 0.95);
    --content-bg-dark: rgba(16, 20, 25, 0.9);
    --chat-history-bg-dark: rgba(0, 0, 0, 0.7);
    --brand-color: #00FF9B;
    --link-color: #E0E0E0;
    --link-hover-color: #00FF9B;
    --footer-border-dark: #333;
    --error-color: #ff4d4d;

    /* Updated Light Theme for better readability */
    --bg-color-light: #f8f9fa;
    --text-color-light: #212529;
    --header-bg-light: rgba(255, 255, 255, 0.9);
    --content-bg-light: #ffffff;
    --chat-history-bg-light: #f8f9fa;
    --footer-border-light: #dee2e6;
}