/**
 * Footer and Button Bar Interaction
 * Makes button bar semi-transparent when hovering over footer area
 * so footer content remains visible
 */

(function() {
    'use strict';

    // Wait for DOM to be ready
    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }

    function init() {
        const footer = document.querySelector('footer.no-print');
        if (!footer) return;

        // Get all fixed buttons
        const buttons = document.querySelectorAll(
            '.download-btn, .print-friendly-btn, .shortcuts-btn, ' +
            '.info-button, .back-to-top, .color-theme-switcher'
        );

        // Add hover listeners to footer
        footer.addEventListener('mouseenter', () => {
            // Add class to footer itself for text enlargement
            footer.classList.add('footer-hovered');
            // Add class to buttons for transparency
            buttons.forEach(btn => {
                btn.classList.add('footer-hovered');
            });
        });

        footer.addEventListener('mouseleave', () => {
            // Remove class from footer
            footer.classList.remove('footer-hovered');
            // Remove class from buttons
            buttons.forEach(btn => {
                btn.classList.remove('footer-hovered');
            });
        });
    }
})();