Sidebar width: 16rem felt empty, 13rem felt cramped, 14rem stuck
The hub layout (left sticky profile / right content) needed two rounds of width tuning before it stopped looking off.
The home page uses a brittanychiang-style two-column layout: left sticky profile card, right scrolling content (About / Featured projects / Recent posts).
First version: lg:grid-cols-[16rem_1fr] inside max-w-5xl. On a 2000px-wide monitor, the column rendered fine but the whole layout felt floaty — too much white space on either side of max-w-5xl, and the sidebar had ~80px of vertical air below the nav links.
Round 1: narrow the sidebar
Tried 13rem. Sidebar got tighter, but on the same wide display the visual problem was unchanged: the page was still squeezed into 1024px in the middle of a 2000px viewport. The sidebar wasn't the issue; the container was.
Round 2: widen container + sidebar
Settled on max-w-6xl (1152px) + lg:grid-cols-[14rem_1fr] + lg:gap-16. The container takes 128px more horizontal space, so the layout feels less like a column dropped in the middle. The sidebar at 14rem (224px) is wide enough for two-word link labels without wrapping; 13rem was cutting things close.
What I learned about my own debugging
I was solving the wrong axis. "Sidebar feels empty" is a per-column observation, but the actual feel came from container width relative to viewport. Once I switched from "fix the sidebar" to "fix the page's proportion," it was obvious.
Pattern lesson: when a component feels off, check whether the issue is at that component's level or one level up. Most layout-feel issues live in the parent's width/gap/padding, not the component itself.
What I didn't do
I considered adding content to the sidebar to fill the empty space (a "currently building" line, a tagline). Decided against — adding noise to fix a proportions bug just hides the bug. Better to leave the sidebar quiet and fix the actual proportion.
This entry is kind=ux-retro because the lesson is a UI design heuristic, not an engineering bug.