fix(electron): adjust tab styles (#7919)

![image.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/T2klNLEk0wxLh4NRDzhk/121ee595-99f0-43cb-be5f-ca1bdd15d6ca.png)

fix AF-1261

packages/frontend/core/src/modules/app-tabs-header/views/app-tabs-header.tsx

@@ -1,3 +1,4 @@
+// credits: tab overlay impl inspired by Figma desktop
 import {
   type DropTargetDropEvent,
   type DropTargetOptions,
@@ -208,7 +209,6 @@ const WorkbenchTab = ({
         data-testid="workbench-tab"
         data-active={tabActive}
         data-pinned={workbench.pinned}
-        data-padding-right={tabsLength > 1 && !workbench.pinned}
         className={styles.tab}
       >
         {workbench.views.map((view, viewIdx) => {
@@ -236,7 +236,11 @@ const WorkbenchTab = ({
                   )}
                 </div>
                 {workbench.pinned || !view.title ? null : (
-                  <div title={view.title} className={styles.splitViewLabelText}>
+                  <div
+                    title={view.title}
+                    className={styles.splitViewLabelText}
+                    data-padding-right={tabsLength > 1 && !workbench.pinned}
+                  >
                     {view.title}
                   </div>
                 )}

packages/frontend/core/src/modules/app-tabs-header/views/styles.css.ts

@@ -1,5 +1,9 @@
 import { cssVar } from '@toeverything/theme';
-import { style } from '@vanilla-extract/css';
+import { cssVarV2 } from '@toeverything/theme/v2';
+import { createVar, style } from '@vanilla-extract/css';
+
+export const tabOverlayWidth = createVar('0px');
+export const tabButtonWidth = createVar('16px');
 
 export const root = style({
   width: '100%',
@@ -94,9 +98,6 @@ export const tab = style({
       background: cssVar('backgroundPrimaryColor'),
       boxShadow: cssVar('shadow1'),
     },
-    '&[data-padding-right="true"]': {
-      paddingRight: 20,
-    },
     '&[data-pinned="true"]': {
       flexShrink: 0,
     },
@@ -115,27 +116,30 @@ export const splitViewLabel = style({
   fontWeight: 500,
   alignItems: 'center',
   cursor: 'default',
-  ':last-of-type': {
-    paddingRight: 0,
-  },
 });
 
-export const splitViewLabelText = style({
-  minWidth: 0,
-  textOverflow: 'ellipsis',
+export const tabCloseButtonWrapper = style({
+  pointerEvents: 'none',
+  position: 'absolute',
+  right: 0,
+  top: 0,
+  bottom: 0,
+  height: '100%',
+  width: 14,
   overflow: 'clip',
-  whiteSpace: 'nowrap',
-  color: cssVar('textSecondaryColor'),
-  fontSize: cssVar('fontXs'),
+  display: 'flex',
+  alignItems: 'center',
+  paddingRight: 8,
+  justifyContent: 'flex-end',
   selectors: {
-    [`${splitViewLabel}:hover &`]: {
-      color: cssVar('textPrimaryColor'),
+    [`${tab}:is([data-active=true], :hover) &:not(:empty)`]: {
+      width: 40,
     },
-    [`${splitViewLabel}[data-active="true"] &`]: {
-      color: cssVar('primaryColor'),
+    [`${tab}[data-active=true] &`]: {
+      background: `linear-gradient(270deg, ${cssVar('backgroundPrimaryColor')} 52.86%, rgba(255, 255, 255, 0.00) 100%)`,
     },
-    [`${splitViewLabel}:last-of-type &`]: {
-      textOverflow: 'clip',
+    [`${tab}[data-active=false] &`]: {
+      background: `linear-gradient(270deg, ${cssVar('backgroundSecondaryColor')} 65.71%, rgba(244, 244, 245, 0.00) 100%)`,
     },
   },
 });
@@ -165,48 +169,51 @@ export const labelIcon = style([
   },
 ]);
 
-export const tabCloseButtonWrapper = style({
-  pointerEvents: 'none',
-  position: 'absolute',
-  right: 0,
-  top: 0,
-  bottom: 0,
-  height: '100%',
-  width: 24,
-  overflow: 'clip',
-  display: 'flex',
-  alignItems: 'center',
-  paddingRight: 4,
-  justifyContent: 'flex-end',
-  selectors: {
-    [`${tab}:is([data-active=true], :hover) &:not(:empty)`]: {
-      width: 40,
-    },
-    [`${tab}[data-active=true] &`]: {
-      background: `linear-gradient(270deg, ${cssVar('backgroundPrimaryColor')} 52.86%, rgba(255, 255, 255, 0.00) 100%)`,
-    },
-    [`${tab}[data-active=false] &`]: {
-      background: `linear-gradient(270deg, ${cssVar('backgroundSecondaryColor')} 65.71%, rgba(244, 244, 245, 0.00) 100%)`,
-    },
-  },
-});
-
 export const tabCloseButton = style([
   tabIcon,
   {
     pointerEvents: 'auto',
     width: 16,
-    height: '100%',
+    height: 16,
+    borderRadius: 2,
     display: 'none',
     color: cssVar('iconColor'),
     selectors: {
       [`${tab}:is([data-active=true], :hover) &`]: {
         display: 'flex',
       },
+      '&:hover': {
+        color: cssVarV2('tab/iconColor/hover'),
+        background: cssVarV2('layer/background/hoverOverlay'),
+      },
     },
   },
 ]);
 
+export const splitViewLabelText = style({
+  minWidth: 0,
+  textOverflow: 'ellipsis',
+  overflow: 'clip',
+  whiteSpace: 'nowrap',
+  color: cssVar('textSecondaryColor'),
+  fontSize: cssVar('fontXs'),
+  paddingRight: 4,
+  selectors: {
+    [`${splitViewLabel}:hover &`]: {
+      color: cssVar('textPrimaryColor'),
+    },
+    [`${splitViewLabel}[data-active="true"] &`]: {
+      color: cssVar('primaryColor'),
+    },
+    [`${splitViewLabel}:last-of-type &`]: {
+      textOverflow: 'clip',
+    },
+    [`${splitViewLabel}:last-of-type [data-padding-right="true"]&`]: {
+      paddingRight: 20,
+    },
+  },
+});
+
 export const spacer = style({
   flexGrow: 1,
   height: '100%',