From bbb1be69a2d07c6d09c21609d28be03d04b1806f Mon Sep 17 00:00:00 2001
From: arookieofc <2128194521@qq.com>
Date: Tue, 3 Nov 2026 07:05:16 +0800
Subject: [PATCH] fix(linux): make the frameless settings window edge readable

#595 follow-up: the 1px --border-window hairline is nearly invisible on
the dark theme (#40434a against a dark desktop), which fuqiuluo confirmed
on Fedora 44 GNOME Wayland after the first edge commit. Blend the
foreground tone into the ring so the boundary reads on every theme;
still CSS-only, since Wayland gives undecorated windows no compositor
shadow to paint outside the surface.
---
 src/features/settings/dialog/SettingsDialog.module.css | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/features/settings/dialog/SettingsDialog.module.css b/src/features/settings/dialog/SettingsDialog.module.css
index 0a1105ab..a9ab4292 100644
--- a/src/features/settings/dialog/SettingsDialog.module.css
+++ b/src/features/settings/dialog/SettingsDialog.module.css
@@ -204,9 +204,10 @@
   color: var(--fg);
 }
 /* Linux draws no shadow for a frameless window (Wayland/KDE give undecorated
-   windows no CSD), so mark its edge in CSS instead. */
+   windows no CSD), so mark its edge in CSS instead. --border-window alone is
+   near-invisible on the dark theme, so blend the foreground tone into it. */
 .windowEdge {
-  box-shadow: inset 0 0 0 1px var(--border-window);
+  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--fg) 32%, var(--border-window));
 }
 .windowBody {
   flex: 1;