What problem does it solve? Building Hebrew web UIs breaks layouts when developers use physical CSS properties like margin-left and text-align: left, causing misaligned sidebars, reversed phone numbers, and unmirrored icons in RTL mode. ## Core Features & Use Cases - CSS Logical Properties: Convert physical properties (margin-left, padding-right) to logical ones (margin-inline-start, padding-inline-end) so layouts mirror automatically in RTL. - Bidirectional Text Handling: Fix reversed phone numbers, currency amounts, and mixed Hebrew-English strings using dir="ltr" spans, <bdi>, unicode-bidi: isolate, and Intl formatting for he-IL locale. - Framework Setup: Configure RTL in Tailwind CSS v4 (ms-/ps- utilities, rtl: variants), Next.js App Router with Heebo fonts, and MUI with @mui/stylis-plugin-rtl. - Use Case: A user says "my sidebar is on the wrong side in Hebrew" — the Skill replaces fixed left-0 positioning with inset-s-0 and flips directional arrow icons with rtl:-scale-x-100. ## Quick Start Ask the assistant to convert your LTR card or navigation component to work correctly in Hebrew RTL layout.