Holographic Chat Conversation

Act like a frontend developer with 15 years of experience. I want the exact same UI with 95-99% similarity.

Platform: This is a RESPONSIVE design — it should work on both mobile and desktop. Use mobile layout patterns (bottom nav, stacked content) for mobile, and desktop layout patterns (sidebar/nav bar, wider content areas) for web.

Design a chat screen with a header showing avatar, name and online status, alternating incoming and outgoing message bubbles with timestamps, and a rounded input bar with an attach icon and a send button.

Visual style — Holographic:
An iridescent shifting-rainbow gradient sheen across card surfaces and buttons, like a hologram sticker, with thin white specular highlight lines at 20px card radius. White or near-white text carries a soft glow. Futuristic, shiny, collectible-card aesthetic.

Color palette — Pink Holo:
Background #140A12. Sheen gradient #FFB8E6, #B8E4FF, #FFF0B8. Text #FBF0F8.

Typography — use these exact font families:
- Headings / display: -apple-system, BlinkMacSystemFont, "SF Pro Display", sans-serif
- Body / labels: -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif

Commit fully to this style — it should be unmistakable at a glance. Use realistic content, not placeholder text. Keep animations smooth (200ms ease-out).