JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>WebOS Mobile</title>
    <style>
        :root {
            --bg-url: url('https://images.unsplash.com/photo-1557683316-973673baf926?auto=format&fit=crop&w=400&q=80');
            --accent-color: #007AFF;
            --glass: rgba(255, 255, 255, 0.2);
            --text-color: white;
            --font-main: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        /* Special Feature: Neural Mode (Cyberpunk Theme) */
        .neural-mode {
            --bg-url: url('https://images.unsplash.com/photo-1550745165-9bc0b252726f?auto=format&fit=crop&w=400&q=80');
            --accent-color: #00ff41;
            --glass: rgba(0, 255, 65, 0.1);
            --text-color: #00ff41;
            filter: contrast(1.2) brightness(1.1);
        }

        * { box-sizing: border-box; margin: 0; padding: 0; user-select: none; }

        body {
            background: #222;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            font-family: var(--font-main);
            overflow: hidden;
        }

        /* Phone Frame */
        #phone-frame {
            width: 360px;
            height: 740px;
            background: #000;
            border: 12px solid #333;
            border-radius: 40px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
        }

        /* Screen/Wallpaper */
        #screen {
            width: 100%;
            height: 100%;
            background-image: var(--bg-url);
            background-size: cover;
            background-position: center;
            position: relative;
            transition: all 0.5s ease;
        }

        /* Status Bar */
        #status-bar {
       ...