document.addEventListener('DOMContentLoaded', function () {
    // --- Feather Icons ---
    feather.replace();

    // --- Theme Switcher ---
    const themeSwitch = document.getElementById('checkbox');
    const currentTheme = localStorage.getItem('theme');

    if (currentTheme) {
        document.documentElement.setAttribute('data-theme', currentTheme);
        if (currentTheme === 'dark') {
            themeSwitch.checked = true;
        }
    }

    function switchTheme(e) {
        if (e.target.checked) {
            document.documentElement.setAttribute('data-theme', 'dark');
            localStorage.setItem('theme', 'dark');
        } else {
            document.documentElement.setAttribute('data-theme', 'light');
            localStorage.setItem('theme', 'light');
        }
    }

    themeSwitch.addEventListener('change', switchTheme, false);

    // --- Generator Form: Photo Upload ---
    const uploadArea = document.getElementById('upload-area');
    const fileInput = document.getElementById('photo-upload');
    const photoPreview = document.getElementById('photo-preview');
    const MAX_FILES = 5;
    let uploadedFiles = [];

    if (uploadArea) {
        uploadArea.addEventListener('click', () => fileInput.click());

        uploadArea.addEventListener('dragover', (e) => {
            e.preventDefault();
            uploadArea.style.borderColor = 'var(--color-primary)';
        });

        uploadArea.addEventListener('dragleave', (e) => {
            e.preventDefault();
            uploadArea.style.borderColor = 'var(--border-color)';
        });

        uploadArea.addEventListener('drop', (e) => {
            e.preventDefault();
            uploadArea.style.borderColor = 'var(--border-color)';
            const files = e.dataTransfer.files;
            handleFiles(files);
        });

        fileInput.addEventListener('change', (e) => {
            const files = e.target.files;
            handleFiles(files);
        });
    }

    function handleFiles(files) {
        for (const file of files) {
            if (uploadedFiles.length < MAX_FILES && file.type.startsWith('image/')) {
                uploadedFiles.push(file);
            }
        }
        updatePreview();
    }

    function updatePreview() {
        photoPreview.innerHTML = '';
        uploadedFiles.forEach((file, index) => {
            const reader = new FileReader();
            reader.onload = (e) => {
                const previewItem = document.createElement('div');
                previewItem.classList.add('preview-item');

                const img = document.createElement('img');
                img.src = e.target.result;
                previewItem.appendChild(img);

                const removeBtn = document.createElement('button');
                removeBtn.classList.add('remove-img-btn');
                removeBtn.innerHTML = '&times;';
                removeBtn.addEventListener('click', () => {
                    uploadedFiles.splice(index, 1);
                    updatePreview();
                });
                previewItem.appendChild(removeBtn);

                photoPreview.appendChild(previewItem);
            };
            reader.readAsDataURL(file);
        });
    }

    // --- Copy to Clipboard --- 
    const copyBtn = document.getElementById('copy-btn');
    if(copyBtn) {
        copyBtn.addEventListener('click', () => {
            const title = document.getElementById('result-title')?.innerText || '';
            const shortDesc = document.getElementById('result-short-desc')?.innerText || '';
            const desc = document.getElementById('result-desc')?.innerText || '';
            const measurements = document.getElementById('result-measurements')?.innerText || '';
            const hashtags = document.getElementById('result-hashtags')?.innerText || '';

            const fullText = `
${title}

${shortDesc}

${desc}

Measurements: ${measurements}

${hashtags}
            `;

            navigator.clipboard.writeText(fullText.trim()).then(() => {
                const originalText = copyBtn.innerHTML;
                copyBtn.innerHTML = 'Copied!';
                setTimeout(() => {
                    copyBtn.innerHTML = originalText;
                }, 2000);
            }).catch(err => {
                console.error('Failed to copy: ', err);
            });
        });
    }
});