Banner 23 block design & features
Banner23 is a full-width status strip built with shadcn/ui theme tokens. A chart-accent alert icon sits beside a short maintenance headline, unavailable-window schedule in tabular numerals, and a dismiss control at the end of the row.
The fill and border use a soft chart-4 wash so the warning stays theme-friendly in light and dark modes without hard-coded amber. Density is compact, with the icon and close button aligned to the message. Closing removes the section from local state for the session.
The aesthetic is operational and serious rather than promotional. Complexity is low and content-driven: title, message, and schedule string. The chart-token warning treatment is the distinctive detail versus generic yellow alert bars.