Interactive Roadmap Maker JavaScript, HTML, CSS

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```javascript
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Interactive Roadmap Maker</title>
    <style>
        body {
            font-family: sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
        }

        #roadmap-container {
            width: 80%;
            margin: 20px auto;
            background-color: #fff;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }

        #roadmap {
            display: flex;
            flex-wrap: wrap;
            justify-content: flex-start;
            align-items: flex-start;
            gap: 20px;
            padding-bottom: 20px;
            border-bottom: 1px solid #ddd;

        }

        .roadmap-item {
            background-color: #e9ecef;
            padding: 15px;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
            width: 200px; /* Adjust width as needed */
            min-height: 100px;
            text-align: center;
            cursor: pointer;
            transition: background-color 0.2s ease;
            position: relative;
        }

        .roadmap-item:hover {
            background-color: #dee2e6;
        }

        .roadmap-item .delete-button {
            position: absolute;
            top: 5px;
            right: 5px;
            background-color: rgba(255, 0, 0, 0.7);
            color: white;
            border: none;
            padding: 2px 5px;
            border-radius: 3px;
            cursor: pointer;
            font-size: 0.8em;
            opacity: 0;
            transition: opacity 0.2s ease;
        }

        .roadmap-item:hover .delete-button {
            opacity: 1;
        }

        #input-section {
            margin-top: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        #input-section input[type="text"] {
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1em;
        }

        #input-section button {
            padding: 10px 15px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1em;
            transition: background-color 0.2s ease;
        }

        #input-section button:hover {
            background-color: #0056b3;
        }

        #modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 1;
        }

        #modal-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background-color: white;
            padding: 20px;
            border-radius: 5px;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
            width: 400px;
            max-width: 90%;
        }

        #modal-content h2 {
            margin-top: 0;
        }

        #modal-content textarea {
            width: 100%;
            padding: 8px;
            border: 1px solid #ccc;
            border-radius: 4px;
            font-size: 1em;
            resize: vertical;
            min-height: 100px;
        }

        #modal-content button {
            padding: 10px 15px;
            background-color: #007bff;
            color: white;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-size: 1em;
            transition: background-color 0.2s ease;
            margin-right: 10px; /* Space between buttons */
        }

        #modal-content button:hover {
            background-color: #0056b3;
        }

        #modal-content .close-button {
            background-color: #dc3545; /* Red color for close button */
        }

        #modal-content .close-button:hover {
            background-color: #c82333;
        }


    </style>
</head>
<body>

    <div id="roadmap-container">
        <h1>Interactive Roadmap Maker</h1>

        <div id="roadmap">
            <!-- Roadmap items will be added here -->
        </div>

        <div id="input-section">
            <input type="text" id="newItemText" placeholder="Enter roadmap item title">
            <button onclick="addRoadmapItem()">Add Item</button>
        </div>
    </div>

    <div id="modal">
        <div id="modal-content">
            <h2>Item Details</h2>
            <textarea id="itemDetails" placeholder="Enter details about this roadmap item"></textarea>
            <button onclick="saveItemDetails()">Save</button>
            <button onclick="closeModal()" class="close-button">Close</button>
        </div>
    </div>

    <script>
        const roadmapContainer = document.getElementById('roadmap');
        const newItemText = document.getElementById('newItemText');
        const modal = document.getElementById('modal');
        const itemDetails = document.getElementById('itemDetails');
        let selectedItem = null;

        function addRoadmapItem() {
            const text = newItemText.value.trim();
            if (text !== "") {
                const item = createRoadmapItem(text);
                roadmapContainer.appendChild(item);
                newItemText.value = "";
            }
        }

        function createRoadmapItem(text) {
            const item = document.createElement('div');
            item.classList.add('roadmap-item');
            item.textContent = text;

            const deleteButton = document.createElement('button');
            deleteButton.classList.add('delete-button');
            deleteButton.textContent = 'X';
            deleteButton.onclick = (event) => {
                event.stopPropagation(); // Prevent item click when deleting
                item.remove();
            };
            item.appendChild(deleteButton);

            item.addEventListener('click', () => {
                selectedItem = item;
                itemDetails.value = item.details || ''; // Load existing details
                openModal();
            });

            return item;
        }

        function openModal() {
            modal.style.display = 'block';
        }

        function closeModal() {
            modal.style.display = 'none';
            selectedItem = null;
        }

        function saveItemDetails() {
            if (selectedItem) {
                selectedItem.details = itemDetails.value;
            }
            closeModal();
        }

        window.onclick = function(event) {
            if (event.target == modal) {
                closeModal();
            }
        }

        // Sample roadmap items (optional)
        const initialItems = ["Plan the Project", "Design the UI", "Develop Features", "Test Thoroughly", "Deploy to Production"];
        initialItems.forEach(itemText => {
            const item = createRoadmapItem(itemText);
            roadmapContainer.appendChild(item);
        });
    </script>

</body>
</html>
```
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Interactive Roadmap Maker JavaScript, HTML, CSS

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