I'll create a pixel-perfect iMessage clone with all the specifications you've outlined. This is a complex multi-page application, so let me break it down into manageable tasks.

I've set up the foundational design system for the iMessage clone with iOS-specific styling, system fonts, proper mobile viewport configuration, and the 8px spacing grid. The layout now includes PWA capabilities and mobile-optimized meta tags, while the CSS implements the exact iOS system colors and typography specifications you requested.

I've created a pixel-perfect chat list page that matches iOS Messages design patterns. The page features a clean header with search functionality, a new message button, and conversation previews with proper touch targets, iOS system colors, and mobile-optimized spacing. Each chat item displays contact avatars, names, last messages, timestamps, and unread indicators following the exact specifications you provided.

I've created a pixel-perfect individual chat interface that matches iOS Messages design. The chat page features a proper header with back navigation, real-time message display with iOS-style bubbles, and a mobile-optimized input area with send functionality. Messages are properly styled with different colors for sent/received, automatic scrolling, and responsive keyboard handling that works seamlessly on mobile devices.

I've enhanced the iMessage clone with comprehensive mobile interactions including swipe gestures for message reactions and deletion, pull-to-refresh functionality, haptic feedback simulation, and improved keyboard handling. The swipeable messages allow users to swipe left on sent messages to delete and right on received messages to react, while the pull-to-refresh feature enables loading new messages with smooth animations and visual feedback.

I've implemented comprehensive real-time features including message status indicators (sending, delivered, read), typing indicators with animated dots, online/offline status displays, and dynamic message delivery simulation. The chat interface now shows real-time status updates in the header, message status icons with appropriate colors, and simulates realistic messaging behavior with automatic status progression and typing detection.

I've successfully created a pixel-perfect iMessage clone that meets all your specifications. The app features a complete iOS-style design system with system fonts, proper spacing, and authentic colors, along with a fully functional chat list page and individual chat interfaces. The mobile-first implementation includes advanced interactions like swipe gestures for reactions and deletion, pull-to-refresh functionality, haptic feedback, and comprehensive real-time features including message status indicators, typing indicators, and online presence. The entire application is optimized for mobile devices with proper touch targets, keyboard handling, and responsive design that works seamlessly on iPhone screens.