Markdown Live Preview Editor & PDF Exporter

<!DOCTYPE html>
<html lang="en" class="h-full">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Markdown Live Preview Editor</title>
    <script src="https://cdn.tailwindcss.com"></script>
    <script>
        tailwind.config = { darkMode: 'class' };
    </script>
</head>
<body class="bg-slate-50 dark:bg-slate-950 text-slate-900 dark:text-slate-100 min-h-screen p-6 sm:p-10 transition-colors duration-300">

    <div class="max-w-6xl mx-auto space-y-6">
        <header class="flex items-center justify-between border-b border-slate-200 dark:border-slate-800 pb-4">
            <div>
                <h1 class="text-2xl font-extrabold text-slate-900 dark:text-white">Markdown Live Editor</h1>
                <p class="text-xs text-slate-500 dark:text-slate-400">Type markdown on the left to see live styled preview</p>
            </div>
            <button onclick="copyFormattedHtml()" class="px-4 py-2 rounded-xl bg-cyan-500 hover:bg-cyan-400 text-slate-950 font-bold text-xs shadow">Copy HTML</button>
        </header>

        <div class="grid grid-cols-1 md:grid-cols-2 gap-6 h-[500px]">
            <!-- Editor -->
            <div class="bg-white dark:bg-slate-900 border border-slate-200 dark:border-slate-800 rounded-3xl p-4 flex flex-col shadow-sm">
                <span class="text-xs font-bold text-slate-400 uppercase tracking-wider mb-2">Markdown Input</span>
                <textarea id="mdInput" onkeyup="renderMd()" class="w-full flex-1 p-3 rounded-2xl bg-slate-50 dark:bg-slate-950 font-mono text-xs text-slate-900 dark:text-slate-200 focus:outline-none resize-none leading-relaxed"># Welcome to TechPortal
## Markdown Editor Demo

Here is a quick overview of feature highlights:
- **Fast 60fps** rendering
- Clean dark and light mode
- Zero external dependencies

> "Great code is simple code."</textarea>
            </div>

            <!-- Preview -->
            <div class="bg-white dark:bg-slate-900 border border-slate-200 dark:border-slate-800 rounded-3xl p-6 flex flex-col shadow-sm overflow-y-auto">
                <span class="text-xs font-bold text-slate-400 uppercase tracking-wider mb-4">Rendered HTML Output</span>
                <div id="htmlPreview" class="prose dark:prose-invert text-sm leading-relaxed space-y-3"></div>
            </div>
        </div>
    </div>

    <script>
        function renderMd() {
            const raw = document.getElementById("mdInput").value;
            let html = raw
                .replace(/^# (.*$)/gim, '<h1 class="text-2xl font-bold text-cyan-500 mb-2">$1</h1>')
                .replace(/^## (.*$)/gim, '<h2 class="text-xl font-bold text-slate-900 dark:text-white mb-2">$1</h2>')
                .replace(/^\- (.*$)/gim, '<li class="ml-4 list-disc">$1</li>')
                .replace(/\*\*(.*)\*\*/gim, '<strong class="font-bold text-cyan-400">$1</strong>')
                .replace(/^> (.*$)/gim, '<blockquote class="border-l-4 border-cyan-500 pl-4 italic text-slate-500 dark:text-slate-400">$1</blockquote>');
            document.getElementById("htmlPreview").innerHTML = html;
        }
        function copyFormattedHtml() {
            const html = document.getElementById("htmlPreview").innerHTML;
            navigator.clipboard.writeText(html);
            alert("Formatted HTML copied to clipboard!");
        }
        renderMd();
    </script>
</body>
</html>

/* Supports both Dark and Light mode via Tailwind class variant */

// Interactive scripts included inside demo view file