document.addEventListener('DOMContentLoaded', function() {
    const primaryColorInput = document.getElementById('primaryColor');
    const secondaryColorInput = document.getElementById('secondaryColor');

    // Color manipulation functions
    function hexToRgb(hex) {
        const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
        return result ? {
            r: parseInt(result[1], 16),
            g: parseInt(result[2], 16),
            b: parseInt(result[3], 16)
        } : null;
    }

    function rgbToHex(r, g, b) {
        return '#' + [r, g, b].map(x => {
            const hex = x.toString(16);
            return hex.length === 1 ? '0' + hex : hex;
        }).join('');
    }

    function lightenColor(color, amount) {
        const rgb = hexToRgb(color);
        if (!rgb) return color;
        
        return rgbToHex(
            Math.min(255, Math.round(rgb.r + (255 - rgb.r) * amount)),
            Math.min(255, Math.round(rgb.g + (255 - rgb.g) * amount)),
            Math.min(255, Math.round(rgb.b + (255 - rgb.b) * amount))
        );
    }

    function darkenColor(color, amount) {
        const rgb = hexToRgb(color);
        if (!rgb) return color;
        
        return rgbToHex(
            Math.max(0, Math.round(rgb.r * (1 - amount))),
            Math.max(0, Math.round(rgb.g * (1 - amount))),
            Math.max(0, Math.round(rgb.b * (1 - amount)))
        );
    }

    function updateAllColors(color, isPrimary) {
        const prefix = isPrimary ? 'primary' : 'secondary';
        
        // Calculate derived colors
        const lightColor = lightenColor(color, 0.15);
        const bgLightColor = lightenColor(color, 0.9);
        const opacity15 = color + '26'; // 15% opacity in hex

        // Calculate chart colors
        const chartColors = {
            base: color,
            light: lightenColor(color, 0.2),
            lighter: lightenColor(color, 0.4),
            lightest: lightenColor(color, 0.6),
            pale: lightenColor(color, 0.8)
        };

        // Update CSS variables for the entire website
        document.documentElement.style.setProperty(`--${prefix}-color`, color);
        document.documentElement.style.setProperty(`--${prefix}-light`, lightColor);
        document.documentElement.style.setProperty(`--${prefix}-bg-light`, bgLightColor);
        document.documentElement.style.setProperty(`--${prefix}-opacity-15`, opacity15);

        // Update chart color variables
        document.documentElement.style.setProperty(`--chart-${prefix}`, chartColors.base);
        document.documentElement.style.setProperty(`--chart-${prefix}-light`, chartColors.light);
        document.documentElement.style.setProperty(`--chart-${prefix}-lighter`, chartColors.lighter);
        document.documentElement.style.setProperty(`--chart-${prefix}-lightest`, chartColors.lightest);
        document.documentElement.style.setProperty(`--chart-${prefix}-pale`, chartColors.pale);

        // Update derived colors in the preview section
        const derivedColorsSection = document.getElementById(`${prefix}DerivedColors`);
        if (derivedColorsSection) {
            const previews = derivedColorsSection.querySelectorAll('.color-preview');
            previews.forEach(preview => {
                const colorType = preview.getAttribute('data-color-type');
                let previewColor;
                switch (colorType) {
                    case 'base':
                        previewColor = color;
                        break;
                    case 'light':
                        previewColor = lightColor;
                        break;
                    case 'bg-light':
                        previewColor = bgLightColor;
                        break;
                    case 'opacity':
                        previewColor = opacity15;
                        break;
                }
                preview.style.backgroundColor = previewColor;
            });
        }

        // Update the color input value
        if (isPrimary) {
            primaryColorInput.value = color;
        } else {
            secondaryColorInput.value = color;
        }
    }

    // Event listeners for color inputs
    primaryColorInput.addEventListener('change', () => {
        updateAllColors(primaryColorInput.value, true);
    });

    secondaryColorInput.addEventListener('change', () => {
        updateAllColors(secondaryColorInput.value, false);
    });

    // Also listen for input events for real-time updates
    primaryColorInput.addEventListener('input', () => {
        updateAllColors(primaryColorInput.value, true);
    });

    secondaryColorInput.addEventListener('input', () => {
        updateAllColors(secondaryColorInput.value, false);
    });

    // Initialize colors from database values
    function initializeColors() {
        // Reset inputs to original database values
        primaryColorInput.value = primaryColorInput.dataset.originalValue;
        secondaryColorInput.value = secondaryColorInput.dataset.originalValue;

        // Update all color previews
        updateAllColors(primaryColorInput.value, true);
        updateAllColors(secondaryColorInput.value, false);
    }

    // Initialize colors when the page loads
    initializeColors();
});