More visible selected article (#8230)

There was not enough difference between selected and not-selected articles, especially not due to hovering using the same style.
Already relevant as is, and more relevant for a future feature depending on selected article.
Additional help welcome to further improve the styling, in this PR or a future one, also for the other themes.

In this example, the third article is the one selected:

<img width="443" height="189" alt="image" src="https://github.com/user-attachments/assets/06168e9f-1b91-47e2-9b64-4fd8ca6c7186" />

* Compensate the increased border-left-width

* Implement in Pafat

* Implement in Nord

* Shorten comment

* Implement in Alternative Dark

* Implement for Flat

* Implement for Swage

* Implement in Ansum and Mapco

* Call stylelint_fix before rtlcss
So that RTLCSS includes the fixes from previous step

16 files changed, 194 insertions, 18 deletions

diff --git a/p/themes/Alternative-Dark/adark.css b/p/themes/Alternative-Dark/adark.css
index 5a4725309..f23245f42 100644
--- a/p/themes/Alternative-Dark/adark.css
+++ b/p/themes/Alternative-Dark/adark.css
@@ -753,7 +753,7 @@ kbd {
 }
 
 .flux .flux_header:hover {
-	background: var(--background-color-hover) !important;
+	background: var(--background-color-hover);
 }
 
 .flux.current {
@@ -801,6 +801,19 @@ kbd {
 	background: var(--background-color-dark);
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-left-width: 5px;
+	border-left-style: double;
+}
+
+.flux.current > .flux_header,
+.flux.not_read.current > .flux_header, .flux.not_read.current > .flux_header:hover,
+.flux.favorite.current > .flux_header, .flux.favorite.current > .flux_header:hover {
+	background: linear-gradient(to right, transparent 0, transparent 3px, var(--background-color-hover) 3px);
+	margin-left: -3px; /* Compensate increased border-left-width */
+}
+
 .flux_header {
 	font-size: 0.8rem;
 	border-top: 1px solid var(--border-color-dark);
diff --git a/p/themes/Alternative-Dark/adark.rtl.css b/p/themes/Alternative-Dark/adark.rtl.css
index f6ba6dea0..e9b38e2b5 100644
--- a/p/themes/Alternative-Dark/adark.rtl.css
+++ b/p/themes/Alternative-Dark/adark.rtl.css
@@ -753,7 +753,7 @@ kbd {
 }
 
 .flux .flux_header:hover {
-	background: var(--background-color-hover) !important;
+	background: var(--background-color-hover);
 }
 
 .flux.current {
@@ -801,6 +801,19 @@ kbd {
 	background: var(--background-color-dark);
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-right-width: 5px;
+	border-right-style: double;
+}
+
+.flux.current > .flux_header,
+.flux.not_read.current > .flux_header, .flux.not_read.current > .flux_header:hover,
+.flux.favorite.current > .flux_header, .flux.favorite.current > .flux_header:hover {
+	background: linear-gradient(to left, transparent 0, transparent 3px, var(--background-color-hover) 3px);
+	margin-right: -3px; /* Compensate increased border-left-width */
+}
+
 .flux_header {
 	font-size: 0.8rem;
 	border-top: 1px solid var(--border-color-dark);
diff --git a/p/themes/Ansum/_list-view.css b/p/themes/Ansum/_list-view.css
index 477916601..57cbce410 100644
--- a/p/themes/Ansum/_list-view.css
+++ b/p/themes/Ansum/_list-view.css
@@ -17,11 +17,17 @@
 
 	&.current {
 		background: var(--white);
-		border-left-color: var(--main-first);
+		border-left: 2px solid var(--main-first);
+		transition: unset;
 
 		&:not(.active) {
 			background: var(--grey-lighter);
 		}
+
+		.flux_header {
+			background-color: unset;
+			margin-left: -2px; /* Compensate increased border-left-width */
+		}
 	}
 
 	&.not_read:not(.current) {
@@ -52,8 +58,6 @@
 
 	&.favorite {
 		border-left-color: var(--fav-bg);
-
-		transition: all 0.15s ease-in-out;
 	}
 
 	&.favorite:not(.current) {
diff --git a/p/themes/Ansum/_list-view.rtl.css b/p/themes/Ansum/_list-view.rtl.css
index f6beeee10..5253bb696 100644
--- a/p/themes/Ansum/_list-view.rtl.css
+++ b/p/themes/Ansum/_list-view.rtl.css
@@ -17,11 +17,17 @@
 
 	&.current {
 		background: var(--white);
-		border-right-color: var(--main-first);
+		border-right: 2px solid var(--main-first);
+		transition: unset;
 
 		&:not(.active) {
 			background: var(--grey-lighter);
 		}
+
+		.flux_header {
+			background-color: unset;
+			margin-right: -2px; /* Compensate increased border-left-width */
+		}
 	}
 
 	&.not_read:not(.current) {
@@ -52,8 +58,6 @@
 
 	&.favorite {
 		border-right-color: var(--fav-bg);
-
-		transition: all 0.15s ease-in-out;
 	}
 
 	&.favorite:not(.current) {
diff --git a/p/themes/Flat/flat.css b/p/themes/Flat/flat.css
index bd02514af..ba2442fb8 100644
--- a/p/themes/Flat/flat.css
+++ b/p/themes/Flat/flat.css
@@ -737,6 +737,17 @@ th {
 	text-align: center;
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-left-width: 5px;
+	border-left-style: double;
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to right, transparent 0, transparent 3px, #fff 3px);
+	margin-left: -3px; /* Compensate increased border-left-width */
+}
+
 /*=== Content of feed articles */
 .content {
 	padding: 20px 10px;
diff --git a/p/themes/Flat/flat.rtl.css b/p/themes/Flat/flat.rtl.css
index 5a4537fcb..a32517a6d 100644
--- a/p/themes/Flat/flat.rtl.css
+++ b/p/themes/Flat/flat.rtl.css
@@ -737,6 +737,17 @@ th {
 	text-align: center;
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-right-width: 5px;
+	border-right-style: double;
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to left, transparent 0, transparent 3px, #fff 3px);
+	margin-right: -3px; /* Compensate increased border-left-width */
+}
+
 /*=== Content of feed articles */
 .content {
 	padding: 20px 10px;
diff --git a/p/themes/Mapco/_list-view.css b/p/themes/Mapco/_list-view.css
index 2d69e0e24..a491a2a18 100644
--- a/p/themes/Mapco/_list-view.css
+++ b/p/themes/Mapco/_list-view.css
@@ -16,7 +16,13 @@
 
 	&.current {
 		background: var(--grey-lighter);
-		border-left-color: var(--main-first);
+		border-left: 2px solid var(--main-first);
+		transition: unset;
+
+		.flux_header {
+			background-color: unset;
+			margin-left: -2px; /* Compensate increased border-left-width */
+		}
 	}
 
 	&.not_read:not(.current) {
@@ -48,8 +54,6 @@
 
 	&.favorite {
 		border-left-color: var(--fav-bg);
-
-		transition: all 0.15s ease-in-out;
 	}
 
 	&.favorite:not(.current) {
diff --git a/p/themes/Mapco/_list-view.rtl.css b/p/themes/Mapco/_list-view.rtl.css
index 27388479a..8e043e347 100644
--- a/p/themes/Mapco/_list-view.rtl.css
+++ b/p/themes/Mapco/_list-view.rtl.css
@@ -16,7 +16,13 @@
 
 	&.current {
 		background: var(--grey-lighter);
-		border-right-color: var(--main-first);
+		border-right: 2px solid var(--main-first);
+		transition: unset;
+
+		.flux_header {
+			background-color: unset;
+			margin-right: -2px; /* Compensate increased border-left-width */
+		}
 	}
 
 	&.not_read:not(.current) {
@@ -48,8 +54,6 @@
 
 	&.favorite {
 		border-right-color: var(--fav-bg);
-
-		transition: all 0.15s ease-in-out;
 	}
 
 	&.favorite:not(.current) {
diff --git a/p/themes/Nord/nord.css b/p/themes/Nord/nord.css
index 47769c786..7419de8ea 100644
--- a/p/themes/Nord/nord.css
+++ b/p/themes/Nord/nord.css
@@ -809,6 +809,12 @@ li.item.active {
 
 .flux.current {
 	background: var(--accent-bg);
+	border-left: 1px solid var(--highlight);
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to right, transparent 0, transparent 1px, var(--accent-bg) 1px);
+	margin-left: -1px; /* Compensate increased border-left-width */
 }
 
 .flux:not(.current):hover .item .title {
diff --git a/p/themes/Nord/nord.rtl.css b/p/themes/Nord/nord.rtl.css
index 5820aebdc..9b3232c79 100644
--- a/p/themes/Nord/nord.rtl.css
+++ b/p/themes/Nord/nord.rtl.css
@@ -809,6 +809,12 @@ li.item.active {
 
 .flux.current {
 	background: var(--accent-bg);
+	border-right: 1px solid var(--highlight);
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to left, transparent 0, transparent 1px, var(--accent-bg) 1px);
+	margin-right: -1px; /* Compensate increased border-left-width */
 }
 
 .flux:not(.current):hover .item .title {
diff --git a/p/themes/Origine/origine.css b/p/themes/Origine/origine.css
index 6bb083e3f..94474d640 100644
--- a/p/themes/Origine/origine.css
+++ b/p/themes/Origine/origine.css
@@ -886,6 +886,25 @@ button:hover .icon,
 	background-color: var(--favorite-article-background-color-hover);
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-left-width: 5px;
+	border-left-style: double;
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to right, transparent 0, transparent 3px, var(--background-color-hover) 3px);
+	margin-left: -3px; /* Compensate increased border-left-width */
+}
+
+.flux.not_read.current > .flux_header, .flux.not_read.current > .flux_header:hover {
+	background: linear-gradient(to right, transparent 0, transparent 3px, var(--unread-article-background-color-hover) 3px);
+}
+
+.flux.favorite.current > .flux_header, .flux.favorite.current > .flux_header:hover {
+	background: linear-gradient(to right, transparent 0, transparent 3px, var(--favorite-article-background-color-hover) 3px);
+}
+
 .flux_header {
 	font-size: 0.9rem;
 	border-top: 1px solid var(--border-color);
diff --git a/p/themes/Origine/origine.rtl.css b/p/themes/Origine/origine.rtl.css
index a2b82b987..d2beb6189 100644
--- a/p/themes/Origine/origine.rtl.css
+++ b/p/themes/Origine/origine.rtl.css
@@ -886,6 +886,25 @@ button:hover .icon,
 	background-color: var(--favorite-article-background-color-hover);
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-right-width: 5px;
+	border-right-style: double;
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to left, transparent 0, transparent 3px, var(--background-color-hover) 3px);
+	margin-right: -3px; /* Compensate increased border-left-width */
+}
+
+.flux.not_read.current > .flux_header, .flux.not_read.current > .flux_header:hover {
+	background: linear-gradient(to left, transparent 0, transparent 3px, var(--unread-article-background-color-hover) 3px);
+}
+
+.flux.favorite.current > .flux_header, .flux.favorite.current > .flux_header:hover {
+	background: linear-gradient(to left, transparent 0, transparent 3px, var(--favorite-article-background-color-hover) 3px);
+}
+
 .flux_header {
 	font-size: 0.9rem;
 	border-top: 1px solid var(--border-color);
diff --git a/p/themes/Pafat/pafat.css b/p/themes/Pafat/pafat.css
index ab9d5d1cd..cdc131e99 100644
--- a/p/themes/Pafat/pafat.css
+++ b/p/themes/Pafat/pafat.css
@@ -834,6 +834,25 @@ a.signin {
 	background-color: var(--background-color-favorite-hover);
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-left-width: 5px;
+	border-left-style: double;
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to right, transparent 0, transparent 3px, var(--background-color-hover) 3px);
+	margin-left: -3px; /* Compensate increased border-left-width */
+}
+
+.flux.not_read.current > .flux_header, .flux.not_read.current > .flux_header:hover {
+	background: linear-gradient(to right, transparent 0, transparent 3px, var(--unread-article-background-color-hover) 3px);
+}
+
+.flux.favorite.current > .flux_header, .flux.favorite.current > .flux_header:hover {
+	background: linear-gradient(to right, transparent 0, transparent 3px, var(--favorite-article-background-color-hover) 3px);
+}
+
 .flux_header {
 	font-size: 0.8rem;
 	border-top: 1px solid var(--border-color-grey-light);
diff --git a/p/themes/Pafat/pafat.rtl.css b/p/themes/Pafat/pafat.rtl.css
index 8f1de3b89..9a8d2c95c 100644
--- a/p/themes/Pafat/pafat.rtl.css
+++ b/p/themes/Pafat/pafat.rtl.css
@@ -834,6 +834,25 @@ a.signin {
 	background-color: var(--background-color-favorite-hover);
 }
 
+/* stylelint-disable-next-line no-duplicate-selectors */
+.flux.current {
+	border-right-width: 5px;
+	border-right-style: double;
+}
+
+.flux.current > .flux_header {
+	background: linear-gradient(to left, transparent 0, transparent 3px, var(--background-color-hover) 3px);
+	margin-right: -3px; /* Compensate increased border-left-width */
+}
+
+.flux.not_read.current > .flux_header, .flux.not_read.current > .flux_header:hover {
+	background: linear-gradient(to left, transparent 0, transparent 3px, var(--unread-article-background-color-hover) 3px);
+}
+
+.flux.favorite.current > .flux_header, .flux.favorite.current > .flux_header:hover {
+	background: linear-gradient(to left, transparent 0, transparent 3px, var(--favorite-article-background-color-hover) 3px);
+}
+
 .flux_header {
 	font-size: 0.8rem;
 	border-top: 1px solid var(--border-color-grey-light);
diff --git a/p/themes/Swage/swage.css b/p/themes/Swage/swage.css
index 4d03c5955..592f49167 100644
--- a/p/themes/Swage/swage.css
+++ b/p/themes/Swage/swage.css
@@ -995,8 +995,7 @@ main.post .drop-section li.item.feed a:hover .icon {
 		clear: both;
 	}
 
-	.flux_header:hover,
-	.current {
+	.flux_header:hover {
 		background-color: var(--color-background-hover);
 
 		&:not(.current):hover .item .title {
@@ -1004,6 +1003,19 @@ main.post .drop-section li.item.feed a:hover .icon {
 		}
 	}
 
+	&.current {
+		border-left: 2px solid var(--color-background-alert-darker);
+
+		.flux_header {
+			background-color: unset;
+			margin-left: -2px; /* Compensate increased border-left-width */
+		}
+
+		.flux_header:hover {
+			background: linear-gradient(to right, transparent 0, transparent 2px, var(--color-background-hover) 2px);
+		}
+	}
+
 	&.favorite:not(.current) {
 		background-color: var(--color-background-stared);
 
diff --git a/p/themes/Swage/swage.rtl.css b/p/themes/Swage/swage.rtl.css
index f6b55232a..345622b82 100644
--- a/p/themes/Swage/swage.rtl.css
+++ b/p/themes/Swage/swage.rtl.css
@@ -995,8 +995,7 @@ main.post .drop-section li.item.feed a:hover .icon {
 		clear: both;
 	}
 
-	.flux_header:hover,
-	.current {
+	.flux_header:hover {
 		background-color: var(--color-background-hover);
 
 		&:not(.current):hover .item .title {
@@ -1004,6 +1003,19 @@ main.post .drop-section li.item.feed a:hover .icon {
 		}
 	}
 
+	&.current {
+		border-right: 2px solid var(--color-background-alert-darker);
+
+		.flux_header {
+			background-color: unset;
+			margin-right: -2px; /* Compensate increased border-left-width */
+		}
+
+		.flux_header:hover {
+			background: linear-gradient(to left, transparent 0, transparent 2px, var(--color-background-hover) 2px);
+		}
+	}
+
 	&.favorite:not(.current) {
 		background-color: var(--color-background-stared);