style(navbar): dark outline instead of white halo on gym logo buttons

CLAUDE.md

@@ -79,7 +79,7 @@ Since 2026-09-25, one install serves several physical gyms: the `gyms` table, on
 folder per gym (`/3070/`, `/<postal-code>/`), content rows carry `gym_id`, and the
 backoffice has an "a editar" gym switcher (`admin_gym_id()` /
 `admin_gym()` in `config/functions_gyms.php`). `/` and `/home` 301 to the default gym (`is_default`); the other published gyms appear as highlighted buttons (`.gym-switch-btn`) at the right end of the public navbar (`site/includes/navbar.php`). `site/gym_chooser.php` is no longer used.
-Each gym has a brand colour (`gyms.brand_color`, `#RRGGBB`, migration `migration_20261013_gym_brand_color.sql`; gym 1 = green `#C2D500`, gym 2 = red): set in Gestão → Ginásios, emitted as `:root` overrides by `gym_brand_css()` in `site/includes/include.php`. New components must use `--fitme-accent*` / `--fitme-on-accent`, never a hard-coded colour; the CrossFit nav pill follows the brand colour too. The public navbar's bottom edge is an always-on, slow (14s) sweep in the brand colour (`.header-section::before/::after`, `nav-sweep`, static with reduced motion). Each gym can have a `logo` (same migration, plus `migration_20261026_gym_logo.sql`: the column was added to the 2026-10-13 file after it had already run on dev, so dev had no `logo` column until 2026-10-26 — never edit a migration that has run, add a new one); the header image and the logo are uploaded in Gestão → Ginásios (`gyms_save_image()` → `uploads/gyms/`, validated by content, SVG through `svg_is_safe()`), not typed as paths; `db_gyms_create/update` skip `brand_color`/`logo` while the migration isn't applied (`_gyms_cols()`); the navbar button for another gym is drawn in that gym's brand colour (`gym_brand_vars()` inline); with a logo (`gym_logo()`: the gym's own, or for the default gym the bundled `logo_black.svg`) the button shows the logo in full colour straight on the frosted navbar, with no face and no darkening on hover (`.gym-switch-btn--logo`: thin brand outline, hover = spinning ring only, no glow, a light `drop-shadow` halo on the image for contrast; name as alt), without one it shows the name. The navbar brand on each gym's page uses that gym's logo too. Uploads (header + logo) also accept JPEG XL (`.jxl`, detected by signature in `upload_image_ext()` when the caller allows `'jxl'`; the gyms form and gallery photos (`db_gallery_image_upload()`) do; `AddType image/jxl` in `.htaccess`; GD can't resize it, so it is stored as uploaded; Chrome/Firefox may not display JXL, Safari does). The public gallery lists its folder by extension (`site/includes/gallery.php`, `site/index.php`: jpg/jpeg/png/gif/webp/jxl; before 2026-10-26 it only listed `*.jpg`, so PNG/WebP uploads never showed). Gallery photos are not in the scroll "hover" (`.is-centered`, main.js) any more; only a real hover lights them. Mensalidades (`.pricing-section::before`) has a slow (26s) drifting brand-colour glow over the metal texture (`pricing-drift`, static with reduced motion).
+Each gym has a brand colour (`gyms.brand_color`, `#RRGGBB`, migration `migration_20261013_gym_brand_color.sql`; gym 1 = green `#C2D500`, gym 2 = red): set in Gestão → Ginásios, emitted as `:root` overrides by `gym_brand_css()` in `site/includes/include.php`. New components must use `--fitme-accent*` / `--fitme-on-accent`, never a hard-coded colour; the CrossFit nav pill follows the brand colour too. The public navbar's bottom edge is an always-on, slow (14s) sweep in the brand colour (`.header-section::before/::after`, `nav-sweep`, static with reduced motion). Each gym can have a `logo` (same migration, plus `migration_20261026_gym_logo.sql`: the column was added to the 2026-10-13 file after it had already run on dev, so dev had no `logo` column until 2026-10-26 — never edit a migration that has run, add a new one); the header image and the logo are uploaded in Gestão → Ginásios (`gyms_save_image()` → `uploads/gyms/`, validated by content, SVG through `svg_is_safe()`), not typed as paths; `db_gyms_create/update` skip `brand_color`/`logo` while the migration isn't applied (`_gyms_cols()`); the navbar button for another gym is drawn in that gym's brand colour (`gym_brand_vars()` inline); with a logo (`gym_logo()`: the gym's own, or for the default gym the bundled `logo_black.svg`) the button shows the logo in full colour straight on the frosted navbar, with no face and no darkening on hover (`.gym-switch-btn--logo`: thin brand outline, hover = spinning ring only, no glow, a thin dark `drop-shadow` outline on the image for contrast (a white halo washed out the lime FitMe 3070 logo); name as alt), without one it shows the name. The navbar brand on each gym's page uses that gym's logo too. Uploads (header + logo) also accept JPEG XL (`.jxl`, detected by signature in `upload_image_ext()` when the caller allows `'jxl'`; the gyms form and gallery photos (`db_gallery_image_upload()`) do; `AddType image/jxl` in `.htaccess`; GD can't resize it, so it is stored as uploaded; Chrome/Firefox may not display JXL, Safari does). The public gallery lists its folder by extension (`site/includes/gallery.php`, `site/index.php`: jpg/jpeg/png/gif/webp/jxl; before 2026-10-26 it only listed `*.jpg`, so PNG/WebP uploads never showed). Gallery photos are not in the scroll "hover" (`.is-centered`, main.js) any more; only a real hover lights them. Mensalidades (`.pricing-section::before`) has a slow (26s) drifting brand-colour glow over the metal texture (`pricing-drift`, static with reduced motion).
 An unpublished gym 404s publicly but previews for staff.
 
 ## Imagens / JPEG XL (2026-10-26)

site/assets/css/style.css

@@ -539,7 +539,8 @@ section[id] {
    frosted navbar. */
 .gym-switch-btn--logo::after,
 .gym-switch-btn--logo:is(:hover, :focus-visible)::after { display: none; }
-.gym-switch-btn--logo .gym-switch-logo { filter: drop-shadow(0 0 1.5px rgba(255, 255, 255, .9)); }
+/* Thin dark outline, not a white halo: a white glow washed out the lime FitMe 3070 logo. */
+.gym-switch-btn--logo .gym-switch-logo { filter: drop-shadow(0 0 .6px rgba(0, 0, 0, .55)) drop-shadow(0 1px 1px rgba(0, 0, 0, .18)); }
 
 /* ── Sticky Navbar ─────────────────────────────────────────────────────────── */
 .navbar-toggler {