most of it

frontend/src/lib/assets/css/main.less

@@ -1,26 +1,33 @@
-@background-color: white;
-@normal-font-color: #333333;
-@hover-color: #dee2e6;
-@heading-font-color: #4b678b;
-@link-font-color: #4b678b;
-@banner-color: #06d6a0;
+:root {
+    --background-color: white;
+    --background-color-90: #ffffffe6;
+    --normal-font-color: #333333;
+    --normal-font-color-12: rgba(51, 51, 51, 0.12);
+    --hover-color: #dee2e6;
+    --heading-font-color: #672129;
+    --link-font-color: #672129;
+    --banner-color: #06d6a0;
+    --opposite-bg-color: #000;
+    --opposite-bg-color-80: rgba(0, 0, 0, 0.8);
+    --opposite-bg-color-5: rgba(0, 0, 0, 0.05);
+}
 
-@desktop: ~"only screen and (min-width: 1024px)";
-@tablet: ~"only screen and (min-width: 768px)";
-@mobile: ~"only screen and (min-width: 100px)";
-
-@body-fontsize-mobile: 17px;
-@body-fontsize-pc: 24px;
-@body-fontsize-mobile: 16px;
-@body-lineheight-mobile: 130%;
-@body-lineheight-pc: 130%;
-
-@body-maxwidth: 1800px;
-@body-small-maxwidth: 1200px;
-
-/* Allgemeine Stile */
-
-/* roboto-condensed-regular - latin */
+body.darkTheme {
+    --background-color: #1a1a1a; /* softer than #121212 */
+    --background-color-90: rgba(26, 26, 26, 0.9);
+    --normal-font-color: #d1d1d1; /* off-white, less harsh */
+    --normal-font-color-12: rgba(209, 209, 209, 0.12);
+    --hover-color: #404040; /* subtle change for hover */
+    --heading-font-color: #9fb3c7; /* slightly brighter for better readability */
+    --link-font-color: #9fb3c7;
+    --banner-color: #04a577; /* a cooler shade for the banner */
+    --opposite-bg-color: #fafafa; /* off-white */
+    --opposite-bg-color-80: rgba(250, 250, 250, 0.8);
+    --opposite-bg-color-5: rgba(250, 250, 250, 0.05);
+    .row ul li::before {
+        background-image: url("../../../../media/arrow-right-darkt.svg") !important;
+    }
+}
 
 * {
     font-family: "Roboto Condensed", sans-serif;
@@ -30,14 +37,13 @@
 }
 
 body {
-    font-family: "Roboto Condensed", sans-serif;
-    color: #333 !important;
     height: 100%;
-    background-color: #f9f9f9;
     overflow-x: hidden !important;
 }
 body {
-    background-color: @background-color;
+    color: var(--normal-font-color);
+    font-family: "Roboto Condensed", sans-serif;
+    background-color: var(--background-color);
     min-height: 100vh;
     display: flex;
     justify-content: center;
@@ -69,8 +75,8 @@ ol {
 
 /* Links */
 a {
-    color: @link-font-color;
-    text-decoration: none;
+    color: var(--link-font-color);
+    text-decoration: underline;
     font-weight: 700;
 }
 
@@ -94,20 +100,17 @@ td {
 }
 
 th {
-    background-color: #f4f4f4;
+    background-color: var(--background-color-90);
 }
 button {
     background-color: inherit;
     border: none;
     cursor: pointer;
     font-size: inherit;
-    color: #333;
+    color: var(--normal-font-color);
 }
 input,
 select {
-    color: #333;
+    color: var(--normal-font-color);
     width: 100%;
 }
-
-.text-container {
-}