Build a voice-activated calorie and macro tracking web application called "CalChat" with the following specifications:

Design Requirements

Visual Style:

• Black background with white text throughout the entire app
• Minimalist, clean design with a modern aesthetic
• Use white borders for all UI elements
• High contrast, monochromatic color scheme
• Responsive design that works on mobile and desktop

Layout:

• Single page application with centered content
• Maximum width of 4xl for main content area
• 8px padding around the entire page

Core Features

1. Header Section

• Left side: Logo made from a filled MessageSquare icon (size 40) with a small black dot in the center, next to the text "CalChat" in large bold font (text-4xl)
• Right side: Hamburger menu icon (Menu icon, size 24) button that resets all today's entries when clicked
• Menu button should have a subtle border that becomes white on hover

2. Macro Display Dashboard

Display four large cards in a 2x2 grid showing:

• Calories (integer, no decimal)