[theme] replace all hardcoded colors by css vars and drop ununsed vars

searx/static/themes/simple/src/less/autocomplete.less

@@ -9,7 +9,7 @@
   &:active,
   &:focus,
   &:hover {
-    background-color: var(--background_color);
+    background-color: var(--color-autocompoleter-background);
   }
 
   &:empty {
@@ -45,7 +45,7 @@
 
   &.open {
     display: block;
-    background-color: var(--background_color);
+    background-color: var(--color-autocompleter-background);
     border: 1px solid var(--color-base);
     max-height: 500px;
     overflow-y: auto;

searx/static/themes/simple/src/less/definitions.less

@@ -11,9 +11,8 @@ html {
   --color-base-light: #ecf0f1;
   --color-highlight: #094089;
   --color-black: #000;
-
+  --color-base-border: #d7d7d7;
-  /// From autocomplete.less
+  --color-base-shadow: #ccc;
-  --background_color: white;
 
   /// Modal Colors
   --color-error: #db3434;
@@ -26,65 +25,43 @@ html {
   /// General Colors
   --color-font: #444;
   --color-font-light: #888;
-  --color-red: #25a55b;
   --color-url-font: #29314d;
   --color-url-visited-font: #684898;
 
-  /// Link Colors
-  --color-a-font: var(--color-base);
-  --color-a-font-hover: var(--color-base);
-
   /// Header
   --color-header-background: #f7f7f7;
-  --color-header-border: #d7d7d7;
 
   /// Footer
   --color-footer-background: #f7f7f7;
-  --color-footer-border: #d7d7d7;
 
   /// Search-Input
   --color-search-border: var(--color-base);
   --color-search-background: #fff;
   --color-search-font: #222;
+  --color-search-help: white;
 
   /// Autocompleter
-  --color-autocompleter-choices-background: #fff;
+  --color-autocompleter-background: white;
-  --color-autocompleter-choices-border: var(--color-base);
-  --color-autocompleter-choices-border-left-right: var(--color-base);
-  --color-autocompleter-choices-border-bottom: var(--color-base);
-  --color-autocompleter-choices-font: #444;
-
-  /// Answers
-  --color-answers-border: var(--color-base-dark);
-
-  // Selected
-  --color-autocompleter-selected-background: #444;
-  --color-autocompleter-selected-font: #fff;
-  --color-autocompleter-selected-queried-font: #9fcfff;
 
   /// Categories
   --color-categories-item-selected: var(--color-base);
   --color-categories-item-selected-font: #fff;
   --color-categories-item-border-selected: var(--color-base-dark);
   --color-categories-item-border-unselected: #e8e7e6;
-  --color-categories-item-border-unselected-hover: var(--color-base);
 
   /// Results
-  --color-suggestions-button-background: var(--color-base);
-  --color-suggestions-button-font: #fff;
   --color-download-button-background: var(--color-base);
   --color-download-button-font: #fff;
-  --color-result-search-background: var(--color-base-light);
-  --color-result-definition-border: gray;
   --color-result-torrent-border: lightgray;
   --color-result-top-border: #e8e7e6;
+  --color-result-vim-selected: #f7f7f7;
 
   // Link to result
   --color-result-link-font: var(--color-base-dark);
   --color-result-link-visited-font: var(--color-url-visited-font);
 
   // Url to result
-  --color-result-url-font: var(--color-red);
+  --color-result-url-font: #25a55b;
 
   // Publish Date
   --color-result-publishdate-font: var(--color-font-light);
@@ -98,21 +75,40 @@ html {
   --color-result-search-url-font: #444;
 
   /// Settings
-  --color-settings-fieldset: var(--color-base);
-  --color-settings-table-striped: #dbdbdb;
   --color-settings-tr-hover: #ececec;
+  --color-settings-engine-description-font: darken(#dcdcdc, 30%);
 
   // Labels
-  --color-settings-label-allowed-background: #e74c3c;
-  --color-settings-label-allowed-font: #fff;
-  --color-settings-label-deny-background: #2eee71;
-  --color-settings-label-deny-font: var(--color-font);
   --color-settings-return-background: var(--color-base);
   --color-settings-return-font: #fff;
 
   /// Other
   --color-engines-font: var(--color-font-light);
-  --color-percentage-div-background: #444;
+
+  /// From Toolkit
+  --color-toolkit-badge-font: #fff;
+  --color-toolkit-badge-background: #777;
+  --color-toolkit-kbd-font: #fff;
+  --color-toolkit-kbd-background: #000;
+  --color-toolkit-dialog-border: #000;
+  --color-toolkit-dialog-background: #fff;
+  --color-toolkit-tabs-label-border: #fff;
+  --color-toolkit-tabs-section-border: #000;
+  --color-toolkit-select-border: #d7d7d7;
+  --color-toolkit-checkbox-onoff-background: #dcdcdc;
+  --color-toolkit-checkbox-onoff-label-shadow: rgba(0, 0, 0, 0.3);
+  --color-toolkit-checkbox-onoff-label-background: #3498db;
+  --color-toolkit-checkbox-onoff-checked-background: #dcdcdc;
+  --color-toolkit-checkbox-label-background: #fff;
+  --color-toolkit-checkbox-label-shadow1: #fff;
+  --color-toolkit-checkbox-label-shadow2: rgba(0, 0, 0, 0.5);
+  --color-toolkit-checkbox-label-border: #333;
+  --color-toolkit-checkbox-input-border: #3498db;
+  --color-toolkit-loader-border: rgba(0, 0, 0, 0.2);
+  --color-toolkit-loader-borderleft: rgba(255, 255, 255, 0);
+  --color-toolkit-engine-tooltip-border: #ddd;
+  --color-toolkit-engine-tooltip-shadow: rgba(0, 0, 0, 0.1);
+  --color-toolkit-engine-tooltip-background: #fff;
 }
 
 /// General Size
@@ -122,6 +118,9 @@ html {
 @results-gap: 5rem;
 @search-width: 40rem;
 
+/// From style.less
+@stacked-bar-chart: rgb(0, 0, 0);
+
 /// Load fonts from this directory.
 @icon-font-path:          "../../../fonts/";
 //** File name for all font files.

searx/static/themes/simple/src/less/preferences.less

@@ -40,7 +40,7 @@
     padding: 5px 0 0 0;
     float: left;
     width: 50%;
-    color: darken(#dcdcdc, 30%);
+    color: var(--color-settings-engine-description-font);
     font-size: 90%;
   }
 
@@ -84,7 +84,7 @@
 
   .preferences_back {
     background: none repeat scroll 0 0 var(--color-settings-return-background);
-    color: white;
+    color: var(--color-settings-return-font);
     border: 0 none;
     .rounded-corners;
 

searx/static/themes/simple/src/less/search.less

@@ -6,7 +6,7 @@
   padding: 0 2em 0 @results-offset;
   margin: 0;
   background: var(--color-header-background);
-  border-bottom: 1px solid var(--color-header-border);
+  border-bottom: 1px solid var(--color-base-border);
 }
 
 #search_wrapper {
@@ -225,13 +225,9 @@
   }
 
   input[type="checkbox"]:focus + label {
-    box-shadow: 0 0 8px #3498db;
+    box-shadow: 0 0 8px var(--color-base);
   }
 
-  /* label:hover {
-  border-bottom: 2px solid @color-categories-item-border-unselected-hover;
-  } */
-
   input[type="checkbox"]:checked + label {
     background: var(--color-categories-item-selected);
     color: var(--color-categories-item-selected-font);
@@ -251,7 +247,7 @@
     transition: opacity 1s ease;
     font-size: 0.8em;
     text-align: center;
-    background: white;
+    background: var(--color-search-help);
   }
 
   &:hover .help {

searx/static/themes/simple/src/less/style.less

@@ -6,8 +6,6 @@
 
 // stylelint-disable no-descending-specificity
 
-@stacked-bar-chart: rgb(0, 0, 0);
-
 @import "../../__common__/less/new_issue.less";
 @import "../../__common__/less/stats.less";
 @import "../../__common__/less/result_templates.less";
@@ -79,7 +77,7 @@ footer {
   width: 100%;
   text-align: center;
   background-color: var(--color-footer-background);
-  border-top: 1px solid var(--color-footer-border);
+  border-top: 1px solid var(--color-base-border);
   overflow: hidden;
 
   p {
@@ -125,7 +123,7 @@ a {
 }
 
 article[data-vim-selected] {
-  background: #f7f7f7;
+  background: var(--color-result-vim-selected);
 }
 
 article[data-vim-selected]::before {
@@ -452,9 +450,9 @@ article.result-images[data-vim-selected]::before {
 
 #answers {
   grid-area: answers;
-  border: 1px solid #ddd;
+  border: 1px solid var(--color-base-border);
   padding: 0.9em;
-  box-shadow: 0 0 5px #ccc;
+  box-shadow: 0 0 5px var(--color-base-shadow);
 
   h4 {
     display: none;
@@ -480,10 +478,10 @@ article.result-images[data-vim-selected]::before {
 
   .infobox {
     margin: 10px 0 10px;
-    border: 1px solid #ddd;
+    border: 1px solid var(--color-base-border);
     padding: 0.9em;
     font-size: 0.9em;
-    box-shadow: 0 0 5px #ccc;
+    box-shadow: 0 0 5px var(--color-base-shadow);
 
     h2 {
       margin: 0 0 0.5em 0;
@@ -571,11 +569,11 @@ article.result-images[data-vim-selected]::before {
 }
 
 #backToTop {
-  border: 1px solid #ddd;
+  border: 1px solid var(--color-base-border);
   margin: 0;
   padding: 0;
   font-size: 1em;
-  box-shadow: 0 0 5px #ccc;
+  box-shadow: 0 0 5px var(--color-base-shadow);
   background: white;
   position: fixed;
   bottom: 8rem;

searx/static/themes/simple/src/less/toolkit.less

@@ -49,8 +49,8 @@ html.js .show_if_nojs {
 
 .badge {
   display: inline-block;
-  color: #fff;
+  color: var(--color-toolkit-badge-font);
-  background-color: #777;
+  background-color: var(--color-toolkit-badge-background);
   text-align: center;
   white-space: nowrap;
   vertical-align: baseline;
@@ -64,8 +64,8 @@ kbd {
   padding: 2px 4px;
   margin: 1px;
   font-size: 90%;
-  color: white;
+  color: var(--color-toolkit-kbd-font);
-  background: black;
+  background: var(--color-toolkit-kbd-background);
 }
 
 // table
@@ -122,7 +122,7 @@ div.selectable_url {
   position: relative;
   padding: 1em 1em 1em 2.7em;
   margin: 0 0 1em 0;
-  border: 1px solid black;
+  border: 1px solid var(--color-toolkit-dialog-border);
   border-radius: 4px;
   text-align: left;
 
@@ -191,7 +191,7 @@ div.selectable_url {
 .dialog-modal {
   .dialog();
 
-  background: white;
+  background: var(--color-toolkit-dialog-background);
   position: fixed;
   top: 50%;
   left: 50%;
@@ -244,7 +244,7 @@ div.selectable_url {
     margin: 0 0.7em;
     letter-spacing: 0.5px;
     text-transform: uppercase;
-    border: solid white;
+    border: solid var(--color-toolkit-tabs-label-border);
     border-width: 0 0 2px 0;
 
     .disable-user-select();
@@ -260,7 +260,7 @@ div.selectable_url {
     min-width: 100%;
     padding: 0.7rem 0;
     box-sizing: border-box;
-    border-top: 1px solid black;
+    border-top: 1px solid var(--color-toolkit-tabs-section-border);
     display: none;
   }
 
@@ -327,7 +327,7 @@ select {
     -webkit-appearance: none;
     -moz-appearance: none;
     border: none;
-    border-bottom: 1px solid #d7d7d7;
+    border-bottom: 1px solid var(--color-toolkit-select-border);
     background: url(data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0idXRmLTgiPz4KPCFET0NUWVBFIHN2ZyBQVUJMSUMgIi0vL1czQy8vRFREIFNWRyAxLjEvL0VOIiAiaHR0cDovL3d3dy53My5vcmcvR3JhcGhpY3MvU1ZHLzEuMS9EVEQvc3ZnMTEuZHRkIj4KPHN2ZyB2ZXJzaW9uPSIxLjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgeD0iMHB4IiB5PSIwcHgiIHdpZHRoPSI1MTJweCIgaGVpZ2h0PSI1MTJweCIgdmlld0JveD0iMCAwIDUxMiA1MTIiIGVuYWJsZS1iYWNrZ3JvdW5kPSJuZXcgMCAwIDUxMiA1MTIiIHhtbDpzcGFjZT0icHJlc2VydmUiPjxnPjxwb2x5Z29uIHBvaW50cz0iMTI4LDE5MiAyNTYsMzIwIDM4NCwxOTIiLz48L2c+PC9zdmc+Cg==) no-repeat;
     background-position-x: 105%;
     background-size: 2em;
@@ -347,7 +347,7 @@ select {
     display: inline-block;
     width: 40px;
     height: 10px;
-    background: #dcdcdc;
+    background: var(--color-toolkit-checkbox-onoff-background);
     margin: 8px 1rem;
     position: relative;
     border-radius: 50px;
@@ -360,10 +360,10 @@ select {
       top: -5px;
       cursor: pointer;
       border-radius: 50px;
-      box-shadow: 0 3px 5px 0 rgba(0, 0, 0, 0.3);
+      box-shadow: 0 3px 5px 0 var(--color-toolkit-checkbox-onoff-label-shadow);
       transition: all 0.4s ease;
       left: 27px;
-      background-color: #3498db;
+      background-color: var(--color-toolkit-checkbox-onoff-label-background);
     }
 
     input[type=checkbox] {
@@ -371,7 +371,7 @@ select {
 
       &:checked + label {
         left: -5px;
-        background: #dcdcdc;
+        background: var(--color-toolkit-checkbox-onoff-checked-background);
       }
     }
   }
@@ -391,9 +391,9 @@ select {
       position: absolute;
       top: 0;
       left: 0;
-      background: white;
+      background: var(--color-toolkit-checkbox-label-background);
       border-radius: 4px;
-      box-shadow: inset 0 1px 1px white, 0 1px 4px rgba(0, 0, 0, 0.5);
+      box-shadow: inset 0 1px 1px var(--color-toolkit-checkbox-label-shadow1), 0 1px 4px var(--color-toolkit-checkbox-label-shadow2);
 
       &::after {
         content: '';
@@ -402,7 +402,7 @@ select {
         position: absolute;
         top: 4px;
         left: 4px;
-        border: 3px solid #333;
+        border: 3px solid var(--color-toolkit-checkbox-label-border);
         border-top: none;
         border-right: none;
         background: transparent;
@@ -415,7 +415,7 @@ select {
       visibility: hidden;
 
       &:checked + label::after {
-        border-color: #3498db;
+        border-color: var(--color-toolkit-checkbox-input-border);
         opacity: 1;
       }
     }
@@ -453,10 +453,10 @@ select {
   font-size: 10px;
   position: relative;
   text-indent: -9999em;
-  border-top: 0.5em solid rgba(0, 0, 0, 0.2);
+  border-top: 0.5em solid var(--color-toolkit-loader-border);
-  border-right: 0.5em solid rgba(0, 0, 0, 0.2);
+  border-right: 0.5em solid var(--color-toolkit-loader-border);
-  border-bottom: 0.5em solid rgba(0, 0, 0, 0.2);
+  border-bottom: 0.5em solid var(--color-toolkit-loader-border);
-  border-left: 0.5em solid rgba(255, 255, 255, 0);
+  border-left: 0.5em solid var(--color-toolkit-loader-borderleft);
   -webkit-transform: translateZ(0);
   -ms-transform: translateZ(0);
   transform: translateZ(0);
@@ -494,9 +494,9 @@ select {
   position: absolute;
   padding: 0.5rem 1rem;
   margin: 0 0 0 2rem;
-  border: 1px solid #ddd;
+  border: 1px solid var(--color-toolkit-engine-tooltip-border);
-  box-shadow: 2px 2px 2px 0 rgba(0, 0, 0, 0.1);
+  box-shadow: 2px 2px 2px 0 var(--color-toolkit-engine-tooltip-shadow);
-  background: white;
+  background: var(--color-toolkit-engine-tooltip-background);
   font-size: 14px;
   font-weight: normal;
   z-index: 1000000;