diff --git a/desktopenvs/hyprdrive/config-updater/updater.conf b/desktopenvs/hyprdrive/config-updater/updater.conf
index 34b5b10..bb821b1 100644
--- a/desktopenvs/hyprdrive/config-updater/updater.conf
+++ b/desktopenvs/hyprdrive/config-updater/updater.conf
@@ -25,7 +25,18 @@ config scripts
 config station-bar
 config supersonic-booster
 config transmitter-panel
-config vicinae
+config vicinae         # NOTE: settings.json is live from here, but cosmonaut.toml is NOT —
+                       # vicinae only reads named themes from ~/.local/share/vicinae/themes/,
+                       # so the copy this deploys to ~/.config/vicinae/ is inert and the real
+                       # one is installed once by setup/modules/Desktop-Environments/
+                       # hyprdrive.sh (apply-theme.sh then re-colours it in place). After
+                       # editing cosmonaut.toml here, re-run that copy or the launcher keeps
+                       # the old palette — and if the theme file is missing entirely, vicinae
+                       # silently falls back to its default grey dark theme:
+                       #   cp -f ~/Dotfiles/desktopenvs/hyprdrive/vicinae/cosmonaut.toml \
+                       #      ~/.local/share/vicinae/themes/cosmonaut.toml
+                       #   vicinae server   # restart: a newly added theme file is only
+                       #                    # registered at server startup
 config xfce4
 
 # ── intentionally not managed here ───────────────────────────────────────────
diff --git a/desktopenvs/hyprdrive/supersonic-booster/style/style.css b/desktopenvs/hyprdrive/supersonic-booster/style/style.css
index fc17ba8..a46b130 100644
--- a/desktopenvs/hyprdrive/supersonic-booster/style/style.css
+++ b/desktopenvs/hyprdrive/supersonic-booster/style/style.css
@@ -46,6 +46,10 @@ drawingarea {
 /* ---- tab switcher ------------------------------------------------------- */
 .sb-tabbar {
   margin-bottom: 4px;
+  /* keep the last tab clear of the floating ✕, which is an overlay child and
+   * so claims no layout space of its own — same reservation .sb-header makes
+   * for the title (34px button + 20px margin + a little breathing room) */
+  margin-right: 64px;
 }
 .sb-tab {
   color: @text;
diff --git a/desktopenvs/hyprlua/audio-panel-theme/style.css b/desktopenvs/hyprlua/audio-panel-theme/style.css
index aaf8cfa..36005c9 100644
--- a/desktopenvs/hyprlua/audio-panel-theme/style.css
+++ b/desktopenvs/hyprlua/audio-panel-theme/style.css
@@ -44,7 +44,10 @@ drawingarea {
 }
 
 /* ---- tab switcher --------------------------------------------------------- */
-.sb-tabbar { margin-bottom: 4px; }
+/* margin-right keeps the last tab clear of the floating ✕, which is an overlay
+ * child and so claims no layout space of its own — same reservation .sb-header
+ * makes for the title (34px button + 20px margin + breathing room) */
+.sb-tabbar { margin-bottom: 4px; margin-right: 64px; }
 .sb-tab {
   color: @text;
   background-color: @violet;
diff --git a/desktopenvs/hyprlua/audio-panel/style/style.css b/desktopenvs/hyprlua/audio-panel/style/style.css
index 3bbe252..f353bf5 100644
--- a/desktopenvs/hyprlua/audio-panel/style/style.css
+++ b/desktopenvs/hyprlua/audio-panel/style/style.css
@@ -44,7 +44,10 @@ drawingarea {
 }
 
 /* ---- tab switcher --------------------------------------------------------- */
-.sb-tabbar { margin-bottom: 4px; }
+/* margin-right keeps the last tab clear of the floating ✕, which is an overlay
+ * child and so claims no layout space of its own — same reservation .sb-header
+ * makes for the title (34px button + 20px margin + breathing room) */
+.sb-tabbar { margin-bottom: 4px; margin-right: 64px; }
 .sb-tab {
   color: @text;
   background-color: @violet;