// Event Listeners selectBtn.addEventListener('click', () => fileInput.click()); fileInput.addEventListener('change', (e) => if (e.target.files.length) loadMidiFile(e.target.files[0]); ); dropZone.addEventListener('dragover', (e) => e.preventDefault(); dropZone.style.borderColor = '#2c7da0'; ); dropZone.addEventListener('dragleave', () => dropZone.style.borderColor = '#bdd3e8'; ); dropZone.addEventListener('drop', (e) => e.preventDefault(); dropZone.style.borderColor = '#bdd3e8'; const files = e.dataTransfer.files; if (files.length && (files[0].name.endsWith('.mid') ); resetBtn.addEventListener('click', () => fileInput.value = ''; controlsSection.style.display = 'none'; setStatus("Ready — upload a MIDI file"); currentMidiData = null; parsedMidi = null; ); downloadBtn.addEventListener('click', exportAsPDF);

h1 font-size: 1.9rem; font-weight: 600; margin: 0 0 6px 0; background: linear-gradient(135deg, #1F6E8C, #2C3E50); background-clip: text; -webkit-background-clip: text; color: transparent;

#notationCanvas background: #fffdf8; box-shadow: 0 2px 8px rgba(0,0,0,0.03); width: 100%; height: auto; border-radius: 16px;

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes"> <title>MIDI to Sheet Music - $30 Web Tool</title> <!-- Google Fonts + simple reset --> <link href="https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,400;14..32,500;14..32,600&display=swap" rel="stylesheet"> <!-- AlphaVantage for free audio visual? No need. We use MIDI.js + VexFlow style rendering --> <script src="https://cdn.jsdelivr.net/npm/midifile@1.2.1/dist/MidiFile.min.js"></script> <!-- For rendering piano roll & notation: we'll use canvas & VexFlow (free) --> <script src="https://unpkg.com/vexflow@4.2.5/build/cjs/vexflow.js"></script> <!-- html2canvas for PDF generation (free, client-side) --> <script src="https://cdnjs.cloudflare.com/ajax/libs/html2canvas/1.4.1/html2canvas.min.js"></script> <style> * box-sizing: border-box; body font-family: 'Inter', sans-serif; background: #f6f9fc; margin: 0; padding: 24px 20px; color: #1e2a3e;

.piano-roll margin-top: 32px; background: #1e2a36; border-radius: 20px; padding: 16px;

footer text-align: center; margin-top: 32px; font-size: 0.75rem; color: #7e8c9e;

canvas#pianoCanvas background: #0f1720; border-radius: 14px; width: 100%; height: auto; display: block;