TikTok UI, smartphone, social media app, colorful icons, trendy fonts, vibrant colors, scrolling feed, likes and comments section, notification bell, camera lens, microphone icon, hashtag symbol, trending challenges, discover page, user profile picture, followers counter, following button, heart reaction emoji, share button, music note symbol, filter effects, AR facial recognition, selfie mode, mobile device screen, high-tech gadget, sleek design, futuristic aesthetic, minimalistic background.