YouTube UI Mockup Breakdown

{
 "type": "web browser UI mockup",
 "platform": "YouTube\",
 "browser_window": {
 "style": "macOS light mode",
 "tab": "YouTube",
 "url_bar": "youtube.com"
 },
 "layout": {
 "header": {
 "components": ["hamburger menu", "platform logo", "search bar", "create video icon", "notifications bell", "user profile avatar"]
 },
 "sidebar": {
 "position": "left",
 "item_count": 11,
 "sections": [
 {
 "name": "Main",
 "items": ["Home", "Shorts", "Subscriptions", "Originals", "YouTube Music"]
 },
 {
 "name": "Explore",
 "items": ["Trending", "Shopping", "Music", "Movies", "Live", "Gaming"]
 }
 ]
 },
 "main_content": {
 "category_tags": {
 "count": 10,
 "labels": ["All", "Gaming", "Music", "Live", "Podcasts", "AI", "Cars", "Mixes", "News", "Recently uploaded"]
 },
 "video_grid": {
 "card_count": 5,
 "cards": [
 {
 "position": "top left",
 "size": "large",
 "thumbnail_description": "Sam Altman and Greg Brockman sitting on a stage next to a standing humanoid robot, text overlay 'OpenAI Introducing Our Humanoid Robot', LIVE badge",
 "video_title": "Introducing Our Humanoid Robot\",
 "channel_name": "OpenAI\",
 "metadata": "482K watching now"
 },
 {
 "position": "top right",
 "size": "large",
 "thumbnail_description": "surprised man's face on the left, a large mansion hidden in a forest with an explosion on the right, bold yellow text overlay 'TOTAL SECRECY\'",
 "video_title": "I Bought 100 Million Dollar Secret House!\",
 "channel_name": "MrBeast",
 "metadata": "4.1M views, 19 hours ago, 20:49 duration"
 },
 {
 "position": "bottom left",
 "size": "small",
 "thumbnail_description": "Steve Carell holding a laptop showing a scene from The Office",
 "video_title": "Steve Carell Breaks Down His Most Iconic Characters | GQ",
 "channel_name": "GQ",
 "metadata": "987K views, 2 days ago, 17:46 duration"
 },
 {
 "position": "bottom middle",
 "size": "small",
 "thumbnail_description": "man looking through a spyglass at a sailing ship on the ocean at sunset",
 "video_title": "Black Sails Is Beautiful!",
 "channel_name": "Savage Books",
 "metadata": "606K views, 2 days ago, 17:46 duration"
 },
 {
 "position": "bottom right",
 "size": "small",
 "thumbnail_description": "creepy masked killer character from a video game with text overlay 'DEAD OF DAYLIGHT'",
 "video_title": "Playing As The Seekers In Dead By Daylight",
 "channel_name": "Unknown",
 "metadata": "806K views, 1 day ago, 28:39 duration"
 }
 ]
 }
 }
 }
}