Create index.html

[CCM3642]

<title>Message Tracking System</title> <script src="https://cdn.jsdelivr.net/npm/chart.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/xlsx/0.18.5/xlsx.full.min.js"></script> <style> /* All existing CSS remains the same */ :root { --primary: #2563eb; --primary-dark: #1d4ed8; --primary-light: #dbeafe; --success: #10b981; --warning: #f59e0b; --danger: #ef4444; --info: #06b6d4; --bg: #f8fafc; --surface: #ffffff; --text-primary: #1e293b; --text-secondary: #64748b; --border: #e2e8f0; --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1); --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); --whatsapp: #25D366; --whatsapp-dark: #128C7E; --crispy-red: #ff6b6b; --crispy-orange: #feca57; }