Sidebar 243px, collapsed 90px, desktop hover-expand overlay. Responsive topbar height 56/72/82. Transparent sidebar/header borders in dark. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Sidebar 243px, collapsed 90px, desktop hover-expand overlay. Responsive topbar height 56/72/82. Transparent sidebar/header borders in dark. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>