- Flat purple-gradient nav bar with POSTERG/RÉPERTOIRE/À PROPOS links
- Full-width search bar with icon, bottom-border only, below nav
- Home: white bg, media card grid (thumbnail + author/title label below)
- Répertoire: 4-column index (Années/Catégories/Étudiantes/Mots-clés)
- TFE: 2-column layout (large text left, media right)
- À Propos: 2-column, large monospace text, new apropos.php page
- Admin: dark theme (#1a1a1a), purple gradient nav, bottom-border inputs
- New shared partials: templates/nav.php, templates/search-bar.php
- Rewrote all CSS: common, main, search, tfe, apropos, admin
- Reduce all spacing and padding in header for more compact fit
- Fix back button overflow by removing width: 100% and adding overflow handling
- Make filter section more compact with smaller fonts and spacing
- Add main-wrapper div to group main and footer
- Keep rounded corners (40px) on all three sections like main.css
- Footer stays at bottom of main content area
- Fix HTML structure: footer outside main, both inside wrapper
