The Matrix of Layouts: CSS Grid vs Flexbox

The Quest Begins (The "Why") I was building a admin dashboard for a side‑project and kept hitting the same wall: the sidebar would wrap weirdly on narrow screens, the cards in the main area would overlap when I added a new widget, and the footer stubbornly refused to stick to the bottom. I’d thrown Flexbox at every problem like a hammer looking for nails, and while it solved a few things, I felt like I was constantly patching leaks in a boat. One night, after three cups of coffee and a particula