[web-client] simple theme: move sources to client/simple/src

Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>

21 files changed, 0 insertions, 3855 deletions

diff --git a/searx/static/themes/simple/src/less/animations.less b/searx/static/themes/simple/src/less/animations.less
deleted file mode 100644
index 75c98308f..000000000
--- a/searx/static/themes/simple/src/less/animations.less
+++ /dev/null
@@ -1,19 +0,0 @@
-.dialog-modal {
-  animation-name: dialogmodal;
-  animation-duration: 0.13s;
-
-  @keyframes dialogmodal {
-    0% {
-      opacity: 0;
-    }
-
-    50% {
-      opacity: 0.5;
-      transform: translate(-50%, -50%) scale(1.05);
-    }
-  }
-}
-
-input.checkbox-onoff[type="checkbox"]::before {
-  transition: left 0.25s;
-}
diff --git a/searx/static/themes/simple/src/less/autocomplete.less b/searx/static/themes/simple/src/less/autocomplete.less
deleted file mode 100644
index 8285ff2c6..000000000
--- a/searx/static/themes/simple/src/less/autocomplete.less
+++ /dev/null
@@ -1,74 +0,0 @@
-/*! Autocomplete.js v2.6.3 | license MIT | (c) 2017, Baptiste Donaux | http://autocomplete-js.com */
-
-.autocomplete {
-  position: absolute;
-  width: @search-width;
-  max-height: 0;
-  overflow-y: hidden;
-  .ltr-text-align-left();
-
-  .rounded-corners;
-
-  &:active,
-  &:focus,
-  &:hover {
-    background-color: var(--color-autocomplete-background);
-  }
-
-  &:empty {
-    display: none;
-  }
-
-  > ul {
-    list-style-type: none;
-    margin: 0;
-    padding: 0;
-
-    > li {
-      cursor: pointer;
-      padding: 0.5rem 1rem;
-
-      &.active,
-      &:active,
-      &:focus,
-      &:hover {
-        background-color: var(--color-autocomplete-background-hover);
-
-        a:active,
-        a:focus,
-        a:hover {
-          text-decoration: none;
-        }
-      }
-
-      &.locked {
-        cursor: inherit;
-      }
-    }
-  }
-
-  &.open {
-    display: block;
-    background-color: var(--color-autocomplete-background);
-    color: var(--color-autocomplete-font);
-    max-height: 32rem;
-    overflow-y: auto;
-    z-index: 5000;
-    margin-top: 3.5rem;
-    border-radius: 0.8rem;
-
-    &:empty {
-      display: none;
-    }
-  }
-}
-
-@media screen and (max-width: @phone) {
-  .autocomplete {
-    width: 100%;
-
-    > ul > li {
-      padding: 1rem;
-    }
-  }
-}
diff --git a/searx/static/themes/simple/src/less/code.less b/searx/static/themes/simple/src/less/code.less
deleted file mode 100644
index 6e838bf88..000000000
--- a/searx/static/themes/simple/src/less/code.less
+++ /dev/null
@@ -1,51 +0,0 @@
-@import "../generated/pygments.less";
-
-.codelines {
-  margin: @results-margin 0 0 0;
-  padding: @result-padding 0 0 0;
-}
-
-.code-highlight-sxng() {
-  .code-highlight {
-    pre {
-      overflow: auto;
-      margin: 0;
-      padding: 0 0 0.75rem 0;
-    }
-
-    .linenos {
-      user-select: none;
-      cursor: default;
-
-      &::selection {
-        background: transparent; /* WebKit/Blink Browsers */
-      }
-
-      &::-moz-selection {
-        background: transparent; /* Gecko Browsers */
-      }
-      margin-right: 8px;
-      text-align: right;
-    }
-
-    span.linenos {
-      color: var(--color-line-number);
-    }
-  }
-}
-
-.code-highlight-sxng();
-
-/// Dark Theme (autoswitch based on device pref)
-@media (prefers-color-scheme: dark) {
-  :root.theme-auto {
-    .code-highlight-dark();
-    .code-highlight-sxng();
-  }
-}
-
-// Dark Theme by preferences
-:root.theme-dark {
-  .code-highlight-dark();
-  .code-highlight-sxng();
-}
diff --git a/searx/static/themes/simple/src/less/definitions.less b/searx/static/themes/simple/src/less/definitions.less
deleted file mode 100644
index 7501305fc..000000000
--- a/searx/static/themes/simple/src/less/definitions.less
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * SearXNG, A privacy-respecting, hackable metasearch engine
- *
- * To change the colors of the site, simple edit this variables
- */
-
-/// Light Theme
-:root {
-  /// Base Colors
-  --color-base-font: #444;
-  --color-base-font-rgb: 68, 68, 68;
-  --color-base-background: #fff;
-  --color-base-background-mobile: #f2f5f8;
-  --color-url-font: #334999;
-  --color-url-visited-font: #9822c3;
-  /// Header Colors
-  --color-header-background: #fdfbff;
-  --color-header-border: #ddd;
-  /// Footer Colors
-  --color-footer-background: #fdfbff;
-  --color-footer-border: #ddd;
-  /// Sidebar Colors
-  --color-sidebar-border: #ddd;
-  --color-sidebar-font: #000;
-  --color-sidebar-background: #fff;
-  /// BackToTop Colors
-  --color-backtotop-font: #444;
-  --color-backtotop-border: #ddd;
-  --color-backtotop-background: #fff;
-  /// Button Colors
-  --color-btn-background: #3050ff;
-  --color-btn-font: #fff;
-  --color-show-btn-background: #bbb;
-  --color-show-btn-font: #000;
-  /// Search Input Colors
-  --color-search-border: #bbb;
-  --color-search-shadow: 0 2px 8px rgb(34 38 46 / 25%);
-  --color-search-background: #fff;
-  --color-search-font: #222;
-  --color-search-background-hover: #3050ff;
-  /// Modal Colors
-  --color-error: #db3434;
-  --color-error-background: lighten(#db3434, 40%);
-  --color-warning: #dbba34;
-  --color-warning-background: lighten(#dbba34, 40%);
-  --color-success: #42db34;
-  --color-success-background: lighten(#42db34, 40%);
-  /// Categories Colors
-  --color-categories-item-selected-font: #3050ff;
-  --color-categories-item-border-selected: #3050ff;
-  /// Autocomplete Colors
-  --color-autocomplete-font: #000;
-  --color-autocomplete-border: #bbb;
-  --color-autocomplete-shadow: 0 2px 8px rgb(34 38 46 / 25%);
-  --color-autocomplete-background: #fff;
-  --color-autocomplete-background-hover: #e3e3e3;
-  /// Answer Colors
-  --color-answer-font: #444;  // same as --color-base-font
-  --color-answer-background: #fff;
-  /// Results Colors
-  --color-result-background: #fff;
-  --color-result-border: #ddd;
-  --color-result-url-font: #000;
-  --color-result-vim-selected: #f7f7f7;
-  --color-result-vim-arrow: #000bbb;
-  --color-result-description-highlight-font: #000;
-  --color-result-link-font: #000bbb;
-  --color-result-link-font-highlight: #000bbb;
-  --color-result-link-visited-font: #9822c3;
-  --color-result-publishdate-font: #777;
-  --color-result-engines-font: #545454;
-  --color-result-search-url-border: #ddd;
-  --color-result-search-url-font: #000;
-  // Images Colors
-  --color-result-image-span-font: #444;
-  --color-result-image-span-font-selected: #fff;
-  --color-result-image-background: #fff;
-  /// Settings Colors
-  --color-settings-tr-hover: #ebebeb;
-  --color-settings-engine-description-font: #545454;
-  --color-settings-table-group-background: #0001;
-  /// Detail modal
-  --color-result-detail-font: #fff;
-  --color-result-detail-label-font: lightgray;
-  --color-result-detail-background: #242424;
-  --color-result-detail-hr: #555;
-  --color-result-detail-link: #8af;
-  --color-result-detail-loader-border: rgb(255 255 255 / 20%);
-  --color-result-detail-loader-borderleft: rgb(0 0 0 / 0%);
-  /// Toolkit Colors
-  --color-toolkit-badge-font: #fff;
-  --color-toolkit-badge-background: #545454;
-  --color-toolkit-kbd-font: #fff;
-  --color-toolkit-kbd-background: #000;
-  --color-toolkit-dialog-border: #ddd;
-  --color-toolkit-dialog-background: #fff;
-  --color-toolkit-tabs-label-border: #fff;
-  --color-toolkit-tabs-section-border: #ddd;
-  --color-toolkit-select-background: #e1e1e1;
-  --color-toolkit-select-border: #ddd;
-  --color-toolkit-select-background-hover: #bbb;
-  --color-toolkit-input-text-font: #222;
-  --color-toolkit-checkbox-onoff-off-background: #ddd;
-  --color-toolkit-checkbox-onoff-on-background: #ddd;
-  --color-toolkit-checkbox-onoff-on-mark-background: #3050ff;
-  --color-toolkit-checkbox-onoff-on-mark-color: #fff;
-  --color-toolkit-checkbox-onoff-off-mark-background: #aaa;
-  --color-toolkit-checkbox-onoff-off-mark-color: #fff;
-  --color-toolkit-checkbox-label-background: #ddd;
-  --color-toolkit-checkbox-label-border: #ddd;
-  --color-toolkit-checkbox-input-border: #3050ff;
-  --color-toolkit-engine-tooltip-border: #ddd;
-  --color-toolkit-engine-tooltip-background: #fff;
-  --color-toolkit-loader-border: rgb(0 0 0 / 20%);
-  --color-toolkit-loader-borderleft: rgb(255 255 255 / 0%);
-  --color-doc-code: #003;
-  --color-doc-code-background: #ddeaff;
-  /// Other misc colors
-  --color-bar-chart-primary: #5bc0de;
-  --color-bar-chart-secondary: #deb15b;
-  --color-image-resolution-background: rgb(0 0 0 / 50%);
-  --color-image-resolution-font: #fff;
-  --color-loading-indicator: rgb(255 255 255 / 20%);
-  --color-loading-indicator-gap: #fff;
-  --color-line-number: #64708d;
-  // Favicons Colors
-  --color-favicon-background-color: #ddd;
-  --color-favicon-border-color: #ccc;
-}
-
-.dark-themes() {
-  /// Base Colors
-  --color-base-font: #bbb;
-  --color-base-font-rgb: 187, 187, 187;
-  --color-base-background: #222428;
-  --color-base-background-mobile: #222428;
-  --color-url-font: #8af;
-  --color-url-visited-font: #c09cd9;
-  /// Header Colors
-  --color-header-background: #1e1e22;
-  --color-header-border: #333;
-  /// Footer Colors
-  --color-footer-background: #1e1e22;
-  --color-footer-border: #333;
-  /// Sidebar Colors
-  --color-sidebar-border: #555;
-  --color-sidebar-font: #fff;
-  --color-sidebar-background: #292c34;
-  /// BackToTop Colors
-  --color-backtotop-font: #bbb;
-  --color-backtotop-border: #333;
-  --color-backtotop-background: #2b2e36;
-  /// Button Colors
-  --color-btn-background: #58f;
-  --color-btn-font: #222;
-  --color-show-btn-background: #555;
-  --color-show-btn-font: #fff;
-  /// Search Input Colors
-  --color-search-border: #555;
-  --color-search-shadow: 0 2px 8px rgb(34 38 46 / 25%);
-  --color-search-background: #2b2e36;
-  --color-search-font: #fff;
-  --color-search-background-hover: #58f;
-  /// Modal Colors
-  --color-error: #f55b5b;
-  --color-error-background: darken(#db3434, 40%);
-  --color-warning: #f1d561;
-  --color-warning-background: darken(#dbba34, 40%);
-  --color-success: #79f56e;
-  --color-success-background: darken(#42db34, 40%);
-  /// Categories Colors
-  --color-categories-item-selected-font: #58f;
-  --color-categories-item-border-selected: #58f;
-  /// Autocomplete Colors
-  --color-autocomplete-font: #fff;
-  --color-autocomplete-border: #555;
-  --color-autocomplete-shadow: 0 2px 8px rgb(34 38 46 / 25%);
-  --color-autocomplete-background: #2b2e36;
-  --color-autocomplete-background-hover: #1e1e22;
-  /// Answer Colors
-  --color-answer-font: #bbb; // same as --color-base-font
-  --color-answer-background: #26292f;
-  /// Results Colors
-  --color-result-background: #26292f;
-  --color-result-border: #333;
-  --color-result-url-font: #fff;
-  --color-result-vim-selected: #1f1f23cc;
-  --color-result-vim-arrow: #8af;
-  --color-result-description-highlight-font: #fff;
-  --color-result-link-font: #8af;
-  --color-result-link-font-highlight: #8af;
-  --color-result-link-visited-font: #c09cd9;
-  --color-result-publishdate-font: #888;
-  --color-result-engines-font: #a4a4a4;
-  --color-result-search-url-border: #555;
-  --color-result-search-url-font: #fff;
-  /// Detail modal : same as the light version
-  --color-result-detail-font: #fff;
-  --color-result-detail-label-font: lightgray;
-  --color-result-detail-background: #1a1a1c;
-  --color-result-detail-hr: #555;
-  --color-result-detail-link: #8af;
-  --color-result-detail-loader-border: rgb(255 255 255 / 20%);
-  --color-result-detail-loader-borderleft: rgb(0 0 0 / 0%);
-  // Images Colors
-  --color-result-image-span-font: #bbb;
-  --color-result-image-span-font-selected: #222;
-  --color-result-image-background: #222;
-  /// Settings Colors
-  --color-settings-tr-hover: #2c2c32;
-  --color-settings-engine-description-font: darken(#dcdcdc, 30%);
-  --color-settings-table-group-background: #1b1b21;
-  /// Toolkit Colors
-  --color-toolkit-badge-font: #fff;
-  --color-toolkit-badge-background: #555;
-  --color-toolkit-kbd-font: #000;
-  --color-toolkit-kbd-background: #fff;
-  --color-toolkit-dialog-border: #555;
-  --color-toolkit-dialog-background: #1e1e22;
-  --color-toolkit-tabs-label-border: #222;
-  --color-toolkit-tabs-section-border: #555;
-  --color-toolkit-select-background: #313338;
-  --color-toolkit-select-border: #555;
-  --color-toolkit-select-background-hover: #373b49;
-  --color-toolkit-input-text-font: #fff;
-  --color-toolkit-checkbox-onoff-off-background: #313338;
-  --color-toolkit-checkbox-onoff-on-background: #313338;
-  --color-toolkit-checkbox-onoff-on-mark-background: #58f;
-  --color-toolkit-checkbox-onoff-on-mark-color: #222;
-  --color-toolkit-checkbox-onoff-off-mark-background: #ddd;
-  --color-toolkit-checkbox-onoff-off-mark-color: #222;
-  --color-toolkit-checkbox-label-background: #222;
-  --color-toolkit-checkbox-label-border: #333;
-  --color-toolkit-checkbox-input-border: #58f;
-  --color-toolkit-engine-tooltip-border: #333;
-  --color-toolkit-engine-tooltip-background: #222;
-  --color-toolkit-loader-border: rgb(255 255 255 / 20%);
-  --color-toolkit-loader-borderleft: rgb(0 0 0 / 0%);
-  --color-doc-code: #ddd;
-  --color-doc-code-background: #4d5a6f;
-  // Favicons Colors
-  --color-favicon-background-color: #ddd;
-  --color-favicon-border-color: #ccc;
-}
-
-.black-themes() {
-  --color-base-background: #000;
-  --color-base-background-mobile: #000;
-  --color-header-background: #000;
-  --color-footer-background: #000;
-  --color-sidebar-background: #000;
-}
-
-/// Dark Theme (autoswitch based on device pref)
-@media (prefers-color-scheme: dark) {
-  :root.theme-auto {
-    .dark-themes();
-  }
-}
-
-// Dark Theme by preferences
-:root.theme-dark {
-  .dark-themes();
-}
-
-:root.theme-black {
-  .dark-themes();
-  .black-themes();
-}
-
-/// General Size
-@results-width: 45rem;
-@results-sidebar-width: 25rem;
-@results-offset: 10rem;
-@results-tablet-offset: 0.5rem;
-@results-gap: 5rem;
-@results-margin: 0.125rem;
-@result-padding: 1rem;
-@results-image-row-height: 12rem;
-@results-image-row-height-phone: 10rem;
-@search-width: 44rem;
-// heigh of #search, see detail.less
-@search-height: 13rem;
-
-/// Device Size
-/// @desktop > @tablet
-@tablet: 79.75em;  // see https://github.com/searxng/searxng/issues/874
-@phone: 50em;
-@small-phone: 35em;
-@ultra-small-phone: 20rem;
-
-/// 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.
-@icon-font-name:          "glyphicons-halflings-regular";
-//** Element ID within SVG icon file.
-@icon-font-svg-id:        "glyphicons_halflingsregular";
-
-// decoration of the select HTML elements
-@select-light-svg-path:   "../svg/select-light.svg";
-@select-dark-svg-path:    "../svg/select-dark.svg";
diff --git a/searx/static/themes/simple/src/less/detail.less b/searx/static/themes/simple/src/less/detail.less
deleted file mode 100644
index fd5cd8e05..000000000
--- a/searx/static/themes/simple/src/less/detail.less
+++ /dev/null
@@ -1,253 +0,0 @@
-#main_results #results.image-detail-open.only_template_images {
-  width: min(98%, 59.25rem) !important;
-}
-
-#main_results #results.only_template_images.image-detail-open #backToTop {
-  .ltr-left(56.75rem) !important;
-  .ltr-right(inherit);
-}
-
-article.result-images .detail {
-  display: none;
-}
-
-#results.image-detail-open article.result-images[data-vim-selected] .detail {
-  display: flex;
-  flex-direction: column;
-  position: fixed;
-  .ltr-left(60rem);
-  .ltr-right(0);
-  top: @search-height;
-  transition: top 0.064s ease-in 0s;
-  bottom: 0;
-  background: var(--color-result-detail-background);
-  border: 1px solid var(--color-result-detail-background);
-  z-index: 1000;
-  padding: 4rem 3rem 3rem 3rem;
-
-  a.result-images-source {
-    display: block;
-    flex: 1;
-    text-align: left;
-    width: 100%;
-    border: none;
-    text-decoration: none;
-
-    img {
-      padding: 0;
-      margin: 0;
-      border: none;
-      object-fit: contain;
-      width: inherit;
-      height: inherit;
-      max-width: 100%;
-      min-height: inherit;
-      max-height: calc(100vh - 25rem - 7rem);
-      background: inherit;
-    }
-  }
-
-  .result-images-labels {
-    color: var(--color-result-detail-font);
-    height: 19rem;
-
-    hr {
-      border-top: 1px solid var(--color-result-detail-hr);
-      border-bottom: none;
-    }
-
-    h4 {
-      height: 2rem;
-      overflow: hidden;
-      text-overflow: ellipsis;
-      font-size: 0.9rem;
-      margin-bottom: 0;
-    }
-
-    p {
-      color: var(--color-result-detail-label-font);
-      font-size: 0.9rem;
-      white-space: nowrap;
-      text-overflow: ellipsis;
-      overflow: hidden;
-      margin: 0.8rem 0;
-
-      span {
-        display: inline-block;
-        width: 12rem;
-      }
-    }
-
-    h4,
-    p,
-    a {
-      .ltr-text-align-left();
-    }
-
-    p.result-content {
-      height: 2rem;
-      line-height: unset;
-      overflow: hidden;
-      text-overflow: ellipsis;
-    }
-
-    p.result-url {
-      white-space: nowrap;
-      overflow: hidden hidden;
-      text-overflow: ellipsis;
-    }
-
-    p.result-content:hover,
-    p.result-url:hover {
-      position: relative;
-      overflow: inherit !important;
-      background: var(--color-result-detail-background);
-      text-overflow: inherit !important;
-    }
-
-    a,
-    a:visited,
-    a:hover,
-    a:active {
-      color: var(--color-result-detail-link);
-    }
-
-    a:hover {
-      text-decoration: underline;
-    }
-  }
-
-  a.result-detail-close {
-    top: 1rem;
-    .ltr-left(1rem);
-    padding: 0.4rem;
-  }
-
-  a.result-detail-previous {
-    top: 1rem;
-    .ltr-right(6rem);
-    // center the icon by moving it slightly on the left
-    padding-top: 0.4rem;
-    .ltr-padding-right(0.5rem);
-    padding-bottom: 0.4rem;
-    .ltr-padding-left(0.3rem);
-  }
-
-  a.result-detail-next {
-    top: 1rem;
-    .ltr-right(2rem);
-    padding: 0.4rem;
-  }
-
-  a.result-detail-close,
-  a.result-detail-next,
-  a.result-detail-previous {
-    border-radius: 50%;
-    display: block;
-    width: 1.5rem;
-    height: 1.5rem;
-    position: absolute;
-    filter: opacity(40%);
-    z-index: 1200;
-
-    span {
-      display: block;
-      width: 1.5rem;
-      height: 1.5rem;
-      text-align: center;
-    }
-  }
-
-  a.result-detail-next,
-  a.result-detail-previous {
-    span::before {
-      // vertical center small icons
-      vertical-align: sub;
-    }
-  }
-
-  a.result-detail-close,
-  a.result-detail-close:visited,
-  a.result-detail-close:hover,
-  a.result-detail-close:active,
-  a.result-detail-previous,
-  a.result-detail-previous:visited,
-  a.result-detail-previous:hover,
-  a.result-detail-previous:active,
-  a.result-detail-next,
-  a.result-detail-next:visited,
-  a.result-detail-next:hover,
-  a.result-detail-next:active {
-    color: var(--color-result-detail-font);
-    background: var(--color-result-detail-background);
-    border: 1px solid var(--color-result-detail-font);
-  }
-
-  a.result-detail-close:focus,
-  a.result-detail-close:hover,
-  a.result-detail-previous:focus,
-  a.result-detail-previous:hover,
-  a.result-detail-next:focus,
-  a.result-detail-next:hover {
-    filter: opacity(80%);
-  }
-
-  .loader {
-    position: absolute;
-    top: 1rem;
-    .ltr-right(50%);
-    border-top: 0.5em solid var(--color-result-detail-loader-border);
-    border-right: 0.5em solid var(--color-result-detail-loader-border);
-    border-bottom: 0.5em solid var(--color-result-detail-loader-border);
-    border-left: 0.5em solid var(--color-result-detail-loader-borderleft);
-  }
-}
-
-#results.image-detail-open.scrolling article.result-images[data-vim-selected] .detail {
-  top: 0;
-
-  a.result-images-source img {
-    max-height: calc(100vh - 25rem);
-  }
-}
-
-@media screen and (max-width: @tablet) {
-  #results.image-detail-open article.result-images[data-vim-selected] .detail {
-    top: 0;
-    .ltr-left(0);
-
-    a.result-images-source {
-      display: flex;
-      flex-direction: column;
-      justify-content: center;
-
-      img {
-        width: 100%;
-        max-height: calc(100vh - 24rem);
-      }
-    }
-
-    a.result-detail-next {
-      .ltr-right(1rem);
-    }
-  }
-}
-
-@media screen and (max-width: @phone) {
-  #results.image-detail-open article.result-images[data-vim-selected] .detail {
-    top: 0;
-    .ltr-left(0);
-    padding: 1rem;
-
-    a.result-images-source img {
-      width: 100%;
-      max-height: calc(100vh - 20rem);
-      margin: 0;
-    }
-
-    .result-images-labels p span {
-      width: inherit;
-      .ltr-margin-right(1rem);
-    }
-  }
-}
diff --git a/searx/static/themes/simple/src/less/embedded.less b/searx/static/themes/simple/src/less/embedded.less
deleted file mode 100644
index bd7b89ea6..000000000
--- a/searx/static/themes/simple/src/less/embedded.less
+++ /dev/null
@@ -1,33 +0,0 @@
-iframe[src^="https://w.soundcloud.com"] {
-  height: 120px;
-}
-
-iframe[src^="https://www.deezer.com"] {
-  // The real size is 92px, but 94px are needed to avoid an inner scrollbar of
-  // the embedded HTML.
-  height: 94px;
-}
-
-iframe[src^="https://www.mixcloud.com"] {
-  // the embedded player from mixcloud has some quirks: initial there is an
-  // issue with an image URL that is blocked since it is an a Cross-Origin
-  // request. The alternative text (<img alt='Mixcloud Logo'> then cause an
-  // scrollbar in the inner of the iframe we can't avoid.  Another quirk comes
-  // when pressing the play button, sometimes the shown player has an height of
-  // 200px, sometimes 250px.
-  height: 250px;
-}
-
-iframe[src^="https://bandcamp.com/EmbeddedPlayer"] {
-  // show playlist
-  height: 350px;
-}
-
-iframe[src^="https://bandcamp.com/EmbeddedPlayer/track"] {
-  // hide playlist
-  height: 120px;
-}
-
-iframe[src^="https://genius.com/songs"] {
-  height: 65px;
-}
diff --git a/searx/static/themes/simple/src/less/index.less b/searx/static/themes/simple/src/less/index.less
deleted file mode 100644
index 8590d0c3b..000000000
--- a/searx/static/themes/simple/src/less/index.less
+++ /dev/null
@@ -1,51 +0,0 @@
-#main_index {
-  margin-top: 26vh;
-}
-
-.index {
-  text-align: center;
-
-  .title {
-    background: url('../img/searxng.png') no-repeat;
-    min-height: 4rem;
-    margin: 4rem auto;
-    background-position: center;
-    background-size: contain;
-  }
-
-  h1 {
-    font-size: 4em;
-    visibility: hidden;
-  }
-
-  #search,
-  #search_header {
-    margin: 0 auto;
-    background: inherit;
-    border: inherit;
-    padding: 0;
-    display: block;
-  }
-
-  .search_filters {
-    display: block;
-    margin: 1em 0;
-  }
-
-  .category label {
-    padding: 6px 10px;
-    border-bottom: initial !important;
-  }
-}
-
-@media screen and (max-width: @tablet) {
-  div.title {
-    h1 {
-      font-size: 1em;
-    }
-  }
-
-  #main_index {
-    margin-top: 6em;
-  }
-}
diff --git a/searx/static/themes/simple/src/less/info.less b/searx/static/themes/simple/src/less/info.less
deleted file mode 100644
index f354135d2..000000000
--- a/searx/static/themes/simple/src/less/info.less
+++ /dev/null
@@ -1,10 +0,0 @@
-.info-page {
-  code {
-    font-family: monospace;
-    .rounded-corners-tiny;
-    background-color: var(--color-doc-code-background);
-    color: var(--color-doc-code);
-    padding: 0.2rem;
-    border: 0 none;
-  }
-}
diff --git a/searx/static/themes/simple/src/less/mixins.less b/searx/static/themes/simple/src/less/mixins.less
deleted file mode 100644
index a4bae7128..000000000
--- a/searx/static/themes/simple/src/less/mixins.less
+++ /dev/null
@@ -1,40 +0,0 @@
-// SPDX-License-Identifier: AGPL-3.0-or-later
-
-// Mixins
-.text-size-adjust (@property: 100%) {
-  -webkit-text-size-adjust: @property;
-  -ms-text-size-adjust: @property;
-  -moz-text-size-adjust: @property;
-  text-size-adjust: @property;
-}
-
-.rounded-corners (@radius: 10px) {
-  border-radius: @radius;
-}
-
-.rounded-right-corners (@radius: 0 10px 10px 0) {
-  border-radius: @radius;
-}
-
-.rounded-corners-tiny (@radius: 5px) {
-  border-radius: @radius;
-}
-
-// disable user selection
-.disable-user-select () {
-  -webkit-touch-callout: none;
-  user-select: none;
-}
-
-.show-content-button() {
-  padding: 5px 10px;
-  .rounded-corners-tiny;
-  background: var(--color-show-btn-background);
-  color: var(--color-show-btn-font);
-  cursor: pointer;
-
-  &:hover {
-    background: var(--color-btn-background);
-    color: var(--color-btn-font);
-  }
-}
diff --git a/searx/static/themes/simple/src/less/new_issue.less b/searx/static/themes/simple/src/less/new_issue.less
deleted file mode 100644
index e10a2791c..000000000
--- a/searx/static/themes/simple/src/less/new_issue.less
+++ /dev/null
@@ -1,37 +0,0 @@
-// SPDX-License-Identifier: AGPL-3.0-or-later
-.stats_endpoint {
-  .github-issue-button {
-    display: block;
-    font-size: 16px;
-  }
-
-  .issue-hide {
-    display: none;
-  }
-
-  input[type=checked] {
-    position: absolute;
-  }
-
-  label {
-    margin: 1rem 1rem 1rem 0;
-  }
-
-  .step_content {
-    margin: 1rem 1rem 1rem 2rem;
-  }
-
-  .step1,
-  .step2 {
-    visibility: hidden;
-  }
-
-  .step1_delay {
-    transition: visibility 0s linear 4s;
-  }
-
-  #step1:checked ~ .step1,
-  #step2:checked ~ .step2 {
-    visibility: visible;
-  }
-}
diff --git a/searx/static/themes/simple/src/less/preferences.less b/searx/static/themes/simple/src/less/preferences.less
deleted file mode 100644
index 497b2077a..000000000
--- a/searx/static/themes/simple/src/less/preferences.less
+++ /dev/null
@@ -1,233 +0,0 @@
-table {
-  border-collapse: collapse;
-
-  th,
-  td {
-    text-align: center;
-    padding: 1rem 0.5rem;
-    .ltr-text-align-left();
-  }
-
-  tr.pref-group th {
-    font-weight: normal;
-    .ltr-text-align-left();
-    background: var(--color-settings-table-group-background);
-  }
-}
-
-#main_preferences {
-  form {
-    width: 100%;
-  }
-
-  fieldset {
-    margin: 8px;
-    border: none;
-  }
-
-  legend {
-    margin: 0;
-    padding: 5px 0 0 0;
-    display: block;
-    .ltr-float-left();
-    width: 300px;
-  }
-
-  input[type="text"] {
-    width: 13.25rem;
-    color: var(--color-toolkit-input-text-font);
-    border: none;
-    background: none repeat scroll 0 0 var(--color-toolkit-select-background);
-    padding: 0.2rem 0.4rem;
-    height: 2rem;
-    .rounded-corners-tiny;
-
-    &:hover,
-    &:focus {
-      background-color: var(--color-toolkit-select-background-hover);
-    }
-  }
-
-  div.pref-group {
-    width: 100%;
-    font-weight: normal;
-    padding: 1rem 0.5rem;
-    .ltr-text-align-left();
-    background: var(--color-settings-table-group-background);
-  }
-
-  .value {
-    margin: 0;
-    padding: 0;
-    .ltr-float-left();
-    width: 15em;
-
-    select,
-    input[type="text"] {
-      font-size: inherit !important;
-      margin-top: 0;
-      .ltr-margin-right(1rem);
-      margin-bottom: 0;
-      .ltr-margin-left(0);
-    }
-
-    select {
-      width: 14rem;
-    }
-
-    select:focus,
-    input:focus {
-      outline: none;
-      box-shadow: 0 0 1px 1px var(--color-btn-background);
-    }
-  }
-
-  .description {
-    margin: 0;
-    padding: 5px 0 0 0;
-    .ltr-float-right();
-    width: 50%;
-    color: var(--color-settings-engine-description-font);
-    font-size: 90%;
-  }
-
-  .bang {
-    .ltr-text-align-left();
-    .rounded-corners-tiny;
-    background-color: var(--color-doc-code-background);
-    color: var(--color-doc-code);
-    padding: 0.2rem;
-    border: 0 none;
-  }
-
-  .category {
-    .ltr-margin-right(0.5rem);
-
-    label {
-      border: 2px solid transparent;
-      padding: 0.2rem 0.4rem;
-      .rounded-corners-tiny;
-    }
-  }
-
-  .category input[type="checkbox"]:checked + label {
-    border: 2px solid var(--color-categories-item-border-selected);
-  }
-
-  table.table_engines {
-    th.name {
-      /* stylelint-disable */
-      label {
-        cursor: pointer;
-      }
-      /* stylelint-enable */
-
-      .engine-tooltip {
-        margin-top: 1.8rem;
-        .ltr-left(calc((100% - 85em) / 2 + 10em));
-        max-width: 40rem;
-
-        .engine-description {
-          margin-top: 0.5rem;
-        }
-
-        .bang {
-          margin: 0.3rem;
-        }
-      }
-    }
-
-    .checkbox-col,
-    .name,
-    .shortcut {
-      .ltr-text-align-left();
-    }
-  }
-
-  table.cookies {
-    width: 100%;
-    direction: ltr;
-
-    th,
-    td {
-      text-align: left;
-      font-family: monospace;
-      font-size: 1rem;
-      padding: 0.5em;
-      vertical-align: top;
-    }
-
-    td:first-child {
-      word-break: keep-all;
-      width: 14rem;
-      padding-right: 1rem;
-    }
-
-    td:last-child {
-      word-break: break-all;
-    }
-
-    & > tbody > tr:nth-child(even) > th,
-    & > tbody > tr:nth-child(even) > td {
-      background-color: var(--color-settings-tr-hover);
-    }
-  }
-
-  .preferences_back {
-    background: none repeat scroll 0 0 var(--color-btn-background);
-    color: var(--color-btn-font);
-    border: 0 none;
-    .rounded-corners;
-
-    cursor: pointer;
-    display: inline-block;
-    margin: 2px 4px;
-    padding: 0.7em;
-
-    a {
-      color: var(--color-settings-return-font);
-    }
-
-    a::first-letter {
-      text-transform: uppercase;
-    }
-  }
-
-  #toggle-all-engines-container {
-    width: max-content;
-    margin-left: auto;
-  }
-
-  div.selectable_url {
-    pre {
-      width: 100%;
-    }
-  }
-
-  #copy-hash-container {
-    display: flex;
-    align-items: center;
-    gap: 0.5rem;
-
-    div.selectable_url {
-      pre {
-        width: auto;
-        flex-grow: 1;
-      }
-    }
-  }
-
-  #pref-hash-input {
-    width: 100%;
-  }
-}
-
-@media screen and (max-width: @tablet) {
-  .preferences_back {
-    clear: both;
-  }
-
-  .engine-tooltip {
-    .ltr-left(10em) !important;
-  }
-}
diff --git a/searx/static/themes/simple/src/less/result_templates.less b/searx/static/themes/simple/src/less/result_templates.less
deleted file mode 100644
index afabdf322..000000000
--- a/searx/static/themes/simple/src/less/result_templates.less
+++ /dev/null
@@ -1,7 +0,0 @@
-// SPDX-License-Identifier: AGPL-3.0-or-later
-
-.osm-map-box {
-  height: 300px;
-  width: 100%;
-  margin: 10px 0;
-}
diff --git a/searx/static/themes/simple/src/less/rss.less b/searx/static/themes/simple/src/less/rss.less
deleted file mode 100644
index 0bc6622e3..000000000
--- a/searx/static/themes/simple/src/less/rss.less
+++ /dev/null
@@ -1,45 +0,0 @@
-@import (inline) "../../node_modules/normalize.css/normalize.css";
-@import "definitions.less";
-
-.text-size-adjust (@property: 100%) {
-  -webkit-text-size-adjust: @property;
-  -ms-text-size-adjust: @property;
-  -moz-text-size-adjust: @property;
-  text-size-adjust: @property;
-}
-
-// Reset padding and margin
-html,
-body,
-main {
-  padding: 0;
-  margin: 0;
-}
-
-html {
-  font-family: sans-serif;
-  font-size: 0.9em;
-  .text-size-adjust;
-
-  color: var(--color-base-font);
-  background-color: var(--color-base-background);
-
-  scroll-behavior: smooth;
-}
-
-body {
-  margin-inline: 1rem;
-}
-
-a {
-  text-decoration: none;
-  color: var(--color-url-font);
-
-  &:visited {
-    color: var(--color-url-visited-font);
-
-    .highlight {
-      color: var(--color-url-visited-font);
-    }
-  }
-}
diff --git a/searx/static/themes/simple/src/less/search.less b/searx/static/themes/simple/src/less/search.less
deleted file mode 100644
index a46e4bf06..000000000
--- a/searx/static/themes/simple/src/less/search.less
+++ /dev/null
@@ -1,393 +0,0 @@
-/*
-* SearXNG, A privacy-respecting, hackable metasearch engine
-*/
-
-#search {
-  padding: 0;
-  margin: 0;
-}
-
-#search_header {
-  padding-top: 1.5em;
-  .ltr-padding-right(2em);
-  .ltr-padding-left(@results-offset - 3rem);
-  margin: 0;
-  background: var(--color-header-background);
-  border-bottom: 1px solid var(--color-header-border);
-  display: grid;
-  gap: 1rem 1.2rem;
-  grid-template-columns: 3rem 1fr;
-  grid-template-areas:
-    "logo search"
-    "spacer categories";
-}
-
-.category_checkbox,
-.category_button {
-  display: inline-block;
-  position: relative;
-  .ltr-margin-right(1rem);
-  padding: 0;
-}
-
-.category_checkbox {
-  input {
-    display: none;
-  }
-
-  label {
-    svg {
-      padding-right: 0.2rem;
-    }
-
-    cursor: pointer;
-    padding: 0.2rem 0;
-    display: inline-flex;
-    text-transform: capitalize;
-    font-size: 0.9em;
-    border-bottom: 2px solid transparent;
-    .disable-user-select;
-
-    div.category_name {
-      margin: auto 0;
-    }
-  }
-
-  input[type="checkbox"]:checked + label {
-    color: var(--color-categories-item-selected-font);
-    border-bottom: 2px solid var(--color-categories-item-border-selected);
-  }
-}
-
-button.category_button {
-  background-color: inherit;
-  color: var(--color-base-font);
-  cursor: pointer;
-  padding: 0.2rem 0;
-  display: inline-flex;
-  align-items: center;
-  text-transform: capitalize;
-  font-size: 0.9em;
-  border: none;
-  border-bottom: 2px solid transparent;
-
-  svg {
-    padding-right: 0.2rem;
-  }
-
-  &.selected,
-  &:active {
-    color: var(--color-categories-item-selected-font);
-    border-bottom: 2px solid var(--color-categories-item-border-selected);
-  }
-}
-
-// only used when JavaScript is disabled
-.no-js #categories_container:has(button.category_button:focus-within) button.category_button {
-  &.selected {
-    color: var(--color-base-font);
-    border-bottom: none;
-  }
-
-  &:focus-within {
-    color: var(--color-categories-item-selected-font);
-    border-bottom: 2px solid var(--color-categories-item-border-selected);
-  }
-}
-
-#search_logo {
-  padding: 0.5rem 10px 0 10px;
-  grid-area: logo;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-
-  svg {
-    flex: 1;
-    width: 30px;
-    height: 30px;
-    margin: 0.5rem 0 auto 0;
-  }
-}
-
-.search_categories {
-  grid-area: categories;
-
-  .help {
-    display: none;
-  }
-
-  &:hover .help {
-    display: block;
-    position: absolute;
-    background: var(--color-base-background);
-    padding: 1rem 0.6rem 0.6rem 0;
-    z-index: 1000;
-    width: 100%;
-    left: -0.1rem;
-  }
-}
-
-#search_view {
-  padding: 0.5rem 0.3rem 0 0.5rem;
-  grid-area: search;
-
-  body.results_endpoint & {
-    padding: 0.5rem 2.8rem 0 0;
-  }
-}
-
-.search_box {
-  border-radius: 0.8rem;
-  width: @search-width;
-  display: inline-flex;
-  flex-direction: row;
-  white-space: nowrap;
-  box-shadow: var(--color-search-shadow);
-}
-
-#clear_search {
-  display: block;
-  border-collapse: separate;
-  box-sizing: border-box;
-  width: 1.8rem;
-  margin: 0;
-  padding: 0.8rem 0.2rem;
-  background: none repeat scroll 0 0 var(--color-search-background);
-  border: none;
-  outline: none;
-  color: var(--color-search-font);
-  font-size: 1.1rem;
-  z-index: 1000;
-
-  &:hover {
-    color: var(--color-search-background-hover);
-  }
-
-  &.empty * {
-    display: none;
-  }
-}
-
-html.no-js #clear_search.hide_if_nojs {
-  display: none;
-}
-
-#q,
-#send_search {
-  display: block;
-  margin: 0;
-  padding: 0.8rem;
-  background: none repeat scroll 0 0 var(--color-search-background);
-  border: none;
-  outline: none;
-  color: var(--color-search-font);
-  font-size: 1.1rem;
-  z-index: 100;
-}
-
-#q {
-  width: 100%;
-  .ltr-padding-left(1rem);
-  .ltr-padding-right(0) !important;
-  .ltr-rounded-left-corners(0.8rem);
-}
-
-#q::-ms-clear,
-#q::-webkit-search-cancel-button {
-  display: none;
-}
-
-#send_search {
-  .ltr-rounded-right-corners(0.8rem);
-
-  &:hover {
-    cursor: pointer;
-    background-color: var(--color-search-background-hover);
-    color: var(--color-search-background);
-  }
-}
-
-.no-js #clear_search,
-.no-js #send_search {
-  width: auto !important;
-  .ltr-border-left(1px solid var(--color-search-border));
-}
-
-.search_filters {
-  margin-top: 0.6rem;
-  .ltr-margin-right(0);
-  margin-bottom: 0;
-  .ltr-margin-left(@results-offset + 0.6rem);
-  display: flex;
-  overflow-x: auto;
-  overscroll-behavior-inline: contain;
-
-  select {
-    background-color: inherit;
-
-    &:hover,
-    &:focus {
-      color: var(--color-base-font);
-    }
-  }
-}
-
-@media screen and (max-width: @tablet) {
-  #search_header {
-    padding: 1.5em @results-tablet-offset 0 @results-tablet-offset;
-    column-gap: @results-tablet-offset;
-  }
-
-  .search_filters {
-    margin-top: 0.6rem;
-    .ltr-margin-right(0);
-    margin-bottom: 0;
-    .ltr-margin-left(@results-tablet-offset + 3rem);
-  }
-
-  #categories {
-    font-size: 90%;
-    clear: both;
-  }
-}
-
-@media screen and (max-width: @tablet) and (hover: none) {
-  #main_index,
-  #main_results {
-    #categories_container {
-      width: max-content;
-
-      .category_checkbox {
-        display: inline-block;
-        width: auto;
-      }
-    }
-
-    #categories {
-      width: 100%;
-      .ltr-text-align-left();
-      overflow: scroll hidden;
-      -webkit-overflow-scrolling: touch;
-    }
-  }
-}
-
-@media screen and (max-width: @phone) {
-  #search_header {
-    width: 100%;
-    margin: 0;
-    padding: 0.1rem 0 0 0;
-    gap: 0 0;
-    grid-template-areas:
-      "logo search"
-      "categories categories";
-  }
-
-  .search_logo {
-    padding: 0;
-  }
-
-  .search_box {
-    width: 98%;
-    display: flex;
-  }
-
-  #q {
-    width: 100%;
-    flex: 1;
-  }
-
-  .search_filters {
-    margin: 0 10px;
-    padding: 0.5rem 0;
-  }
-
-  .category {
-    display: inline-block;
-    width: auto;
-    margin: 0;
-
-    svg {
-      display: none;
-    }
-  }
-
-  .category_checkbox {
-    label {
-      padding: 1rem !important;
-      margin: 0 !important;
-    }
-  }
-
-  .category_button {
-    padding: 1rem !important;
-    margin: 0 !important;
-  }
-
-  #search_view:focus-within {
-    display: block;
-    background-color: var(--color-search-background);
-    position: absolute;
-    top: 0;
-    height: 100%;
-    width: 100%;
-    z-index: 2000;
-
-    .search_box {
-      border-bottom: 1px solid var(--color-search-border);
-      width: 100%;
-      border-radius: 0;
-      box-shadow: none;
-
-      #send_search {
-        .ltr-margin-right(0) !important; // Delete when send_search button is disabled on mobile.
-      }
-
-      * {
-        border: none;
-        border-radius: 0;
-        box-shadow: none;
-      }
-    }
-  }
-
-  #main_results #q:placeholder-shown ~ #send_search {
-    .ltr-margin-right(2.6rem);
-    transition: margin 0.1s;
-  }
-}
-
-@media screen and (max-width: @ultra-small-phone) {
-  #search_header {
-    grid-template-areas:
-      "search search"
-      "categories categories";
-  }
-
-  #search_logo {
-    display: none;
-  }
-}
-
-#categories {
-  .disable-user-select;
-
-  &::-webkit-scrollbar {
-    width: 0;
-    height: 0;
-  }
-}
-
-#categories_container {
-  position: relative;
-}
-
-.favicon img {
-  height: 1.5rem;
-  width: 1.5rem;
-  border-radius: 10%;
-  background-color: var(--color-favicon-background-color);
-  border: 1px solid var(--color-favicon-border-color);
-  display: flex;
-}
diff --git a/searx/static/themes/simple/src/less/stats.less b/searx/static/themes/simple/src/less/stats.less
deleted file mode 100644
index 1e823f7c9..000000000
--- a/searx/static/themes/simple/src/less/stats.less
+++ /dev/null
@@ -1,106 +0,0 @@
-// SPDX-License-Identifier: AGPL-3.0-or-later
-
-.engine-stats {
-  border-spacing: 0;
-  border-collapse: collapse;
-
-  tr td,
-  tr th {
-    border-bottom: 1px solid var(--color-result-border);
-    padding: 0.25rem;
-  }
-
-  table.engine-tooltip {
-    border-spacing: 0;
-    border-collapse: collapse;
-
-    td,
-    th {
-      border: none;
-    }
-  }
-
-  .engine-name {
-    width: 20rem;
-  }
-
-  .engine-score {
-    width: 7rem;
-    text-align: right;
-  }
-
-  .engine-reliability {
-    text-align: right;
-  }
-}
-
-table.engine-error th.engine-error-type,
-table.engine-error td.engine-error-type,
-failed-test {
-  width: 10rem;
-}
-
-.engine-errors {
-  margin-top: 3rem;
-
-  table.engine-error {
-    max-width: 1280px;
-    margin: 1rem 0 3rem 0;
-    border: 1px solid var(--color-result-border);
-    .ltr-text-align-left();
-
-    tr th,
-    tr td {
-      padding: 0.5rem;
-    }
-
-    & span.log_parameters {
-      border-right: 1px solid solid var(--color-result-border);
-      padding: 0 1rem 0 0;
-      margin: 0 0 0 0.5rem;
-    }
-  }
-}
-
-.bar-chart-value {
-  width: 3em;
-  display: inline-block;
-  text-align: right;
-  padding-right: 0.5rem;
-}
-
-.bar-chart-graph {
-  width: calc(100% - 5rem);
-  display: inline-block;
-}
-
-.bar-chart-bar {
-  border: 3px solid var(--color-bar-chart-primary);
-  margin: 1px 0;
-}
-
-.bar-chart-serie1 {
-  border: 3px solid var(--color-bar-chart-primary);
-  margin: 1px 0;
-  float: left;
-}
-
-.bar-chart-serie2 {
-  border: 3px solid var(--color-bar-chart-secondary);
-  margin: 1px 0;
-  float: left;
-}
-
-.bar0 {
-  width: 0;
-  border: 0;
-}
-
-.generate-bar(100);
-
-.generate-bar(@n, @i: 1) when (@i =< @n) {
-  .bar@{i} {
-    width: (@i * 100% / @n);
-  }
-  .generate-bar(@n, (@i + 1));
-}
diff --git a/searx/static/themes/simple/src/less/style-center.less b/searx/static/themes/simple/src/less/style-center.less
deleted file mode 100644
index 3618bed86..000000000
--- a/searx/static/themes/simple/src/less/style-center.less
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
---center-page-width overrides the less variable @results-width when the results are centered
-see the CSS rules for #results in style.less ( grid-template-columns and gap).
-
-In this file, the --center-page-width values comes from the Oscar theme (Bootstrap 3).
-
-All rules starts with ".center-alignment-yes #main_results" to be enabled only
-on the /search URL and when the "center alignment" preference is enabled.
-*/
-
-@media screen and (min-width: @phone) {
-  .center-alignment-yes #main_results {
-    --center-page-width: 48rem;
-  }
-}
-
-@media screen and (width >= 62rem) {
-  .center-alignment-yes #main_results {
-    --center-page-width: 60rem;
-  }
-}
-
-@media screen and (min-width: @tablet) {
-  .center-alignment-yes #main_results {
-    --center-page-width: 73rem;
-  }
-}
-
-@media screen and (min-width: @phone) and (max-width: @tablet) {
-  // any change must be reset in @media screen and (min-width: @tablet) { ... }
-  .center-alignment-yes #main_results {
-    #results {
-      grid-template-columns: 60% calc(40% - @results-gap);
-      margin-left: 0;
-      margin-right: 0;
-    }
-
-    #urls {
-      .ltr-margin-left(3rem);
-    }
-
-    #sidebar {
-      .ltr-margin-right(1rem);
-    }
-
-    #backToTop {
-      .ltr-left(calc(60% + 1rem));
-    }
-  }
-}
-
-@media screen and (min-width: @tablet) {
-  .center-alignment-yes #main_results {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-
-    #search {
-      width: 100%;
-      display: flex;
-      flex-direction: column;
-      align-items: center;
-    }
-
-    #search_header {
-      grid-template-columns: calc(50% - 4.5rem - var(--center-page-width) / 2) 3rem var(--center-page-width);
-      grid-template-areas: "na logo search" "na spacer categories";
-      column-gap: 1.2rem;  // from search.less
-      width: 100%;
-      padding-left: 0;
-      padding-right: 0;
-    }
-
-    .search_filters {
-      .ltr-margin-left(0.5rem);
-      width: var(--center-page-width);
-    }
-
-    #results {
-      // from style.less (when screen width = @tablet, reset layout from tablet)
-      .ltr-margin-right(2rem);
-      .ltr-margin-left(@results-offset);
-      //
-
-      &.only_template_images,
-      &.image-detail-open {
-        // * grid-template-columns and .ltr-margin-left are set in style.less
-        // * With .image-detail-open.only_template_images, the width is set in detail.less
-        // * #results is going to be centered because of the #main_results rules,
-        //   align-self aligns the results on the left or right according to the language.
-        align-self: flex-start;
-      }
-
-      &:not(.only_template_images, .image-detail-open) {
-        // the gap is set in style.less
-        .ltr-margin-left(1.5rem);
-        grid-template-columns: calc(var(--center-page-width) - @results-gap - @results-sidebar-width) @results-sidebar-width;
-
-        #backToTop {
-          .ltr-left(calc(50% - @results-sidebar-width - @results-gap + 1rem + var(--center-page-width) / 2));
-        }
-      }
-
-      .result .content {
-        max-width: inherit;
-      }
-    }
-
-    // from style.less (when screen width = @tablet, reset layout from tablet)
-    #urls {
-      .ltr-margin-left(0);
-    }
-
-    #sidebar {
-      .ltr-margin-right(0);
-    }
-  }
-}
diff --git a/searx/static/themes/simple/src/less/style-ltr.less b/searx/static/themes/simple/src/less/style-ltr.less
deleted file mode 100644
index 6f7218b02..000000000
--- a/searx/static/themes/simple/src/less/style-ltr.less
+++ /dev/null
@@ -1,85 +0,0 @@
-.ltr-left(@offset) {
-  left: @offset;
-}
-
-.ltr-right(@offset) {
-  right: @offset;
-}
-
-.ltr-margin-right(@offset) {
-  margin-right: @offset;
-}
-
-.ltr-margin-left(@offset) {
-  margin-left: @offset;
-}
-
-.ltr-border-right(@offset) {
-  border-right: @offset;
-}
-
-.ltr-border-left(@offset) {
-  border-left: @offset;
-}
-
-.ltr-padding-right(@offset) {
-  padding-right: @offset;
-}
-
-.ltr-padding-left(@offset) {
-  padding-left: @offset;
-}
-
-.ltr-float-left() {
-  float: left;
-}
-
-.ltr-float-right() {
-  float: right;
-}
-
-.ltr-text-align-right() {
-  text-align: right;
-}
-
-.ltr-rounded-left-corners(@radius) {
-  border-radius: @radius 0 0 @radius;
-}
-
-.ltr-rounded-top-left-corners(@radius) {
-  border-radius: @radius 0 0 0;
-}
-
-.ltr-rounded-bottom-left-corners(@radius) {
-  border-radius: 0 0 0 @radius;
-}
-
-.ltr-rounded-right-corners(@radius) {
-  border-radius: 0 @radius @radius 0;
-}
-
-.ltr-rounded-top-right-corners(@radius) {
-  border-radius: 0 @radius 0 0;
-}
-
-.ltr-rounded-bottom-right-corners(@radius) {
-  border-radius: 0 0 @radius 0;
-}
-
-.ltr-text-align-left() {
-  text-align: left;
-}
-
-.ltr-border-left-width(@offset) {
-  border-left-width: @offset;
-}
-
-.ltr-border-right-width(@offset) {
-  border-right-width: @offset;
-}
-
-.ltr-transform() {
-  transform: scale(1, 1);
-}
-
-@import "style.less";
diff --git a/searx/static/themes/simple/src/less/style-rtl.less b/searx/static/themes/simple/src/less/style-rtl.less
deleted file mode 100644
index 8e2634d34..000000000
--- a/searx/static/themes/simple/src/less/style-rtl.less
+++ /dev/null
@@ -1,159 +0,0 @@
-.ltr-left(@offset) {
-  right: @offset;
-}
-
-.ltr-right(@offset) {
-  left: @offset;
-}
-
-.ltr-margin-right(@offset) {
-  margin-left: @offset;
-}
-
-.ltr-margin-left(@offset) {
-  margin-right: @offset;
-}
-
-.ltr-border-right(@offset) {
-  border-left: @offset;
-}
-
-.ltr-border-left(@offset) {
-  border-right: @offset;
-}
-
-.ltr-padding-right(@offset) {
-  padding-left: @offset;
-}
-
-.ltr-padding-left(@offset) {
-  padding-right: @offset;
-}
-
-.ltr-float-left() {
-  float: right;
-}
-
-.ltr-float-right() {
-  float: left;
-}
-
-.ltr-text-align-right() {
-  text-align: left;
-}
-
-.ltr-rounded-left-corners(@radius) {
-  border-radius: 0 @radius @radius 0;
-}
-
-.ltr-rounded-top-left-corners(@radius) {
-  border-radius: 0 @radius 0 0;
-}
-
-.ltr-rounded-bottom-left-corners(@radius) {
-  border-radius: 0 0 @radius 0;
-}
-
-.ltr-rounded-right-corners(@radius) {
-  border-radius: @radius 0 0 @radius;
-}
-
-.ltr-rounded-top-right-corners(@radius) {
-  border-radius: @radius 0 0 0;
-}
-
-.ltr-rounded-bottom-right-corners(@radius) {
-  border-radius: 0 0 0 @radius;
-}
-
-.ltr-text-align-left() {
-  text-align: right;
-}
-
-.ltr-border-left-width(@offset) {
-  border-right-width: @offset;
-}
-
-.ltr-border-right-width(@offset) {
-  border-left-width: @offset;
-}
-
-.ltr-transform() {
-  transform: scale(-1, 1);
-}
-
-@import "style.less";
-
-#q,
-#sidebar .infobox dt bdi {
-  direction: rtl;
-}
-
-// URL are displayed LTR but align on the right
-#urls {
-  direction: initial;
-  text-align: right;
-
-  .result .url_header {
-    direction: rtl;
-  }
-
-  .result .url_wrapper {
-    justify-content: end;
-  }
-}
-
-// Image flexbox
-#main_results div#results.only_template_images #urls {
-  direction: rtl;
-}
-
-// Image detail
-#results.image-detail-open article.result-images[data-vim-selected] .detail .result-images-labels p {
-  direction: rtl;
-
-  &.result-url {
-    // Display URL using the LTR direction
-    direction: ltr;
-
-    span {
-      // And put the label on the right
-      direction: rtl;
-      float: right;
-    }
-  }
-}
-
-// select HTML element
-@supports ((background-position-x: 100%) and ((appearance: none) or (-webkit-appearance: none) or (-moz-appearance: none))) {
-  select {
-    border-width: 0 0 0 2rem;
-    background-position-x: -2rem;
-  }
-}
-
-// vim hotkey helps is not translated
-#vim-hotkeys-help table {
-  direction: ltr;
-  text-align: left;
-}
-
-// Logo on the right
-#main_preferences h1,
-#main_stats h1 {
-  background-position-x: 100%;
-}
-
-// patch of stats.less
-.bar-chart-serie1,
-.bar-chart-serie2 {
-  float: right;
-}
-
-.engine-stats .engine-name,
-.engine-stats .engine-score,
-.engine-stats .result-count,
-.engine-stats .response-time,
-.engine-stats .engine-reliability {
-  text-align: right;
-}
diff --git a/searx/static/themes/simple/src/less/style.less b/searx/static/themes/simple/src/less/style.less
deleted file mode 100644
index 7dca47402..000000000
--- a/searx/static/themes/simple/src/less/style.less
+++ /dev/null
@@ -1,1162 +0,0 @@
-/*
-* SearXNG, A privacy-respecting, hackable metasearch engine
-*
-* To convert "style.less" to "style.css" run: $make styles
-*/
-
-// stylelint-disable no-descending-specificity
-
-@import (inline) "../../node_modules/normalize.css/normalize.css";
-@import "definitions.less";
-@import "mixins.less";
-@import "code.less";
-@import "toolkit.less";
-@import "autocomplete.less";
-@import "detail.less";
-@import "animations.less";
-@import "embedded.less";
-@import "info.less";
-@import "new_issue.less";
-@import "stats.less";
-@import "result_templates.less";
-
-// for index.html template
-@import "index.less";
-
-// for preferences.html template
-@import "preferences.less";
-
-// Search-Field
-@import "search.less";
-
-// to center the results
-@import "style-center.less";
-
-// ion-icon
-.ion-icon {
-  display: inline-block;
-  vertical-align: bottom;
-  line-height: 1;
-  text-decoration: inherit;
-  .ltr-transform();
-}
-
-.ion-icon-small {
-  width: 1rem;
-  height: 1rem;
-  .ion-icon;
-}
-
-.ion-icon-big {
-  width: 1.5rem;
-  height: 1.5rem;
-  .ion-icon;
-}
-
-// Main LESS-Code
-html {
-  font-family: sans-serif;
-  font-size: 0.9em;
-  .text-size-adjust;
-
-  color: var(--color-base-font);
-  background-color: var(--color-base-background);
-  padding: 0;
-  margin: 0;
-
-  scroll-behavior: smooth;
-}
-
-body,
-main {
-  padding: 0;
-  margin: 0;
-}
-
-body {
-  display: flex;
-  flex-direction: column;
-  height: 100vh;
-  margin: 0;
-}
-
-main {
-  width: 100%;
-  margin-bottom: 2rem;
-  flex: 1;
-}
-
-.page_with_header {
-  margin: 2em auto;
-  width: 85em;
-}
-
-footer {
-  clear: both;
-  min-height: 4rem;
-  padding: 1rem 0;
-  width: 100%;
-  text-align: center;
-  background-color: var(--color-footer-background);
-  border-top: 1px solid var(--color-footer-border);
-  overflow: hidden;
-
-  p {
-    font-size: 0.9em;
-  }
-}
-
-.page_with_header .logo {
-  height: 40px;
-}
-
-input[type="submit"],
-#results button[type="submit"],
-.button {
-  padding: 0.7rem;
-  display: inline-block;
-  background: var(--color-btn-background);
-  color: var(--color-btn-font);
-  .rounded-corners;
-
-  border: 0;
-  cursor: pointer;
-}
-
-a {
-  text-decoration: none;
-  color: var(--color-url-font);
-
-  &:visited {
-    color: var(--color-url-visited-font);
-
-    .highlight {
-      color: var(--color-url-visited-font);
-    }
-  }
-}
-
-article[data-vim-selected] {
-  background: var(--color-result-vim-selected);
-  .ltr-border-left(0.2rem solid var(--color-result-vim-arrow));
-  .ltr-rounded-right-corners(10px);
-}
-
-article.result-images[data-vim-selected] {
-  background: var(--color-result-vim-arrow);
-  border: none;
-  .rounded-corners;
-
-  .image_thumbnail {
-    filter: opacity(60%);
-  }
-
-  span.title,
-  span.source {
-    color: var(--color-result-image-span-font-selected);
-  }
-}
-
-article[data-vim-selected].category-videos,
-article[data-vim-selected].category-news,
-article[data-vim-selected].category-map,
-article[data-vim-selected].category-music,
-article[data-vim-selected].category-files,
-article[data-vim-selected].category-social {
-  border: 1px solid var(--color-result-vim-arrow);
-  .rounded-corners;
-}
-
-.result {
-  margin: @results-margin 0;
-  padding: @result-padding;
-  box-sizing: border-box;
-  width: 100%;
-  .ltr-border-left(0.2rem solid transparent);
-
-  h3 {
-    font-size: 1.2rem;
-    word-wrap: break-word;
-    margin: 0.4rem 0 0.4rem 0;
-    padding: 0;
-
-    a {
-      color: var(--color-result-link-font);
-      font-weight: normal;
-      font-size: 1.1em;
-
-      &:visited {
-        color: var(--color-result-link-visited-font);
-      }
-
-      &:focus,
-      &:hover {
-        text-decoration: underline;
-        border: none;
-        outline: none;
-      }
-    }
-  }
-
-  .cache_link,
-  .proxyfied_link {
-    font-size: smaller !important;
-    margin-left: 0.5rem;
-  }
-
-  .content,
-  .stat {
-    font-size: 0.9em;
-    margin: 0;
-    padding: 0;
-    max-width: 54em;
-    word-wrap: break-word;
-    line-height: 1.24;
-
-    .highlight {
-      color: var(--color-result-description-highlight-font);
-      background: inherit;
-      font-weight: bold;
-    }
-  }
-
-  .altlink a {
-    font-size: 0.9em;
-    margin: 0 10px 0 0;
-    .show-content-button;
-  }
-
-  .codelines {
-    .highlight {
-      color: inherit;
-      background: inherit;
-      font-weight: normal;
-    }
-  }
-
-  .url_header {
-    display: flex;
-    gap: 0.5rem;
-  }
-
-  .url_wrapper {
-    display: flex;
-    align-items: center;
-    font-size: 1rem;
-    color: var(--color-result-url-font);
-    flex-flow: row nowrap;
-    overflow: hidden;
-    margin: 0;
-    padding: 0;
-
-    .url_o1 {
-      white-space: nowrap;
-      flex-shrink: 1;
-      padding-bottom: 1px;
-
-      .url_i1 {
-        unicode-bidi: plaintext;
-      }
-    }
-
-    .url_o1::after {
-      content: " ";
-      width: 1ch;
-      display: inline-block;
-    }
-
-    .url_o2 {
-      overflow: hidden;
-      white-space: nowrap;
-      flex: 0 1 content;
-      text-align: right;
-      padding-bottom: 1px;
-
-      .url_i2 {
-        float: right;
-      }
-    }
-  }
-
-  .published_date,
-  .result_length,
-  .result_views,
-  .result_author,
-  .result_shipping,
-  .result_source_country {
-    font-size: 0.8em;
-    color: var(--color-result-publishdate-font);
-  }
-
-  .result_price {
-    font-size: 1.2em;
-    color: var(--color-result-description-highlight-font);
-  }
-
-  img.thumbnail {
-    .ltr-float-left();
-    padding-top: 0.6rem;
-    .ltr-padding-right(1rem);
-    width: 7rem;
-    height: unset; // remove height value that was needed for lazy loading
-  }
-
-  .break {
-    clear: both;
-  }
-}
-
-.result-paper,
-.result-packages {
-  .attributes {
-    display: table;
-    border-spacing: 0.125rem;
-
-    div {
-      display: table-row;
-
-      span {
-        font-size: 0.9rem;
-        margin-top: 0.25rem;
-        display: table-cell;
-
-        time {
-          font-size: 0.9rem;
-        }
-      }
-
-      span:first-child {
-        color: var(--color-base-font);
-        min-width: 10rem;
-      }
-
-      span:nth-child(2) {
-        color: var(--color-result-publishdate-font);
-      }
-    }
-  }
-
-  .content {
-    margin-top: 0.25rem;
-  }
-
-  .comments {
-    font-size: 0.9rem;
-    margin: 0.25rem 0 0 0;
-    padding: 0;
-    word-wrap: break-word;
-    line-height: 1.24;
-    font-style: italic;
-  }
-}
-
-.result-packages {
-  .attributes {
-    margin-top: 0.3rem;
-  }
-}
-
-.template_group_images {
-  display: flex;
-  flex-wrap: wrap;
-}
-
-.template_group_images::after {
-  flex-grow: 10;
-  content: "";
-}
-
-.category-videos,
-.category-news,
-.category-map,
-.category-music,
-.category-files,
-.category-social {
-  border: 1px solid var(--color-result-border);
-  margin: 0 @results-tablet-offset 1rem @results-tablet-offset !important;
-  .rounded-corners;
-}
-
-.category-social .image {
-  width: auto !important;
-  min-width: 48px;
-  min-height: 48px;
-  padding: 0 5px 25px 0 !important;
-}
-
-.audio-control audio {
-  width: 100%;
-  padding: 10px 0 0 0;
-}
-
-.embedded-content iframe {
-  width: 100%;
-  padding: 10px 0 0 0;
-}
-
-.result-videos {
-  img.thumbnail {
-    .ltr-float-left();
-    padding-top: 0.6rem;
-    .ltr-padding-right(1rem);
-    width: 20rem;
-    height: unset; // remove height value that was needed for lazy loading
-  }
-}
-
-.result-videos .content {
-  overflow: hidden;
-}
-
-.result-videos .embedded-video iframe {
-  width: 100%;
-  aspect-ratio: 16 / 9;
-  padding: 10px 0 0 0;
-}
-
-@supports not (aspect-ratio: 1 / 1) {
-  // support older browsers which do not have aspect-ratio
-  // https://caniuse.com/?search=aspect-ratio
-  .result-videos .embedded-video iframe {
-    height: calc(@results-width * 9 / 16);
-  }
-}
-
-.engines {
-  .ltr-float-right();
-  display: flex;
-  flex-wrap: wrap;
-  justify-content: flex-end;
-  color: var(--color-result-engines-font);
-
-  span {
-    font-size: smaller;
-    margin-top: 0;
-    margin-bottom: 0;
-    .ltr-margin-right(0.5rem);
-    .ltr-margin-left(0);
-  }
-}
-
-.small_font {
-  font-size: 0.8em;
-}
-
-.highlight {
-  color: var(--color-result-link-font-highlight);
-  background: inherit;
-}
-
-.empty_element {
-  font-style: italic;
-}
-
-.result-images {
-  flex-grow: 1;
-  padding: 0.5rem 0.5rem 3rem 0.5rem;
-  margin: 0.25rem;
-  border: none !important;
-  height: @results-image-row-height;
-  width: unset;
-
-  & > a {
-    position: relative;
-    outline: none;
-  }
-
-  img {
-    margin: 0;
-    padding: 0;
-    border: none;
-    height: 100%;
-    width: 100%;
-    object-fit: cover;
-    vertical-align: bottom;
-    background: var(--color-result-image-background);
-  }
-
-  .image_resolution {
-    position: absolute;
-    right: 0;
-    bottom: 0;
-    background: var(--color-image-resolution-background);
-    padding: 0.3rem 0.5rem;
-    font-size: 0.9rem;
-    color: var(--color-image-resolution-font);
-    border-top-left-radius: 0.3rem;
-  }
-
-  span.title,
-  span.source {
-    display: block;
-    position: absolute;
-
-    width: 100%;
-    font-size: 0.9rem;
-    color: var(--color-result-image-span-font);
-    padding: 0.5rem 0 0 0;
-    overflow: hidden;
-    text-overflow: ellipsis;
-    white-space: nowrap;
-  }
-
-  span.source {
-    padding: 1.8rem 0 0 0;
-    font-size: 0.7rem;
-  }
-}
-
-.result-map {
-  img.image {
-    .ltr-float-right() !important;
-    height: 100px !important;
-    width: auto !important;
-  }
-
-  table {
-    font-size: 0.9em;
-    width: auto;
-    border-collapse: separate;
-    border-spacing: 0 0.35rem;
-
-    th {
-      font-weight: inherit;
-      width: 17rem;
-      vertical-align: top;
-      .ltr-text-align-left();
-    }
-
-    td {
-      vertical-align: top;
-      .ltr-text-align-left();
-    }
-  }
-}
-
-.hidden {
-  display: none !important;
-}
-
-#results {
-  margin-top: 1rem;
-  .ltr-margin-right(2rem);
-  margin-bottom: 0;
-  .ltr-margin-left(@results-offset);
-  display: grid;
-  grid-template:
-      "corrections sidebar" min-content
-      "answers sidebar" min-content
-      "urls sidebar" 1fr
-      "pagination sidebar" min-content
-      / @results-width @results-sidebar-width
-  ;
-  gap: 0 @results-gap;
-}
-
-#results #sidebar *:first-child {
-  margin-top: 0;
-}
-
-#urls {
-  padding: 0;
-  grid-area: urls;
-}
-
-#apis .wrapper {
-  display: flex;
-}
-
-#suggestions {
-  .wrapper {
-    display: flex;
-    flex-flow: column;
-    justify-content: flex-end;
-
-    form {
-      display: inline-block;
-      flex: 1 1 50%;
-    }
-  }
-}
-
-#suggestions,
-#infoboxes {
-  input {
-    padding: 0;
-    margin: 3px;
-    font-size: 0.9em;
-    display: inline-block;
-    background: transparent;
-    color: var(--color-result-search-url-font);
-    cursor: pointer;
-    width: calc(100%);
-    text-overflow: ellipsis;
-    overflow: hidden;
-    text-align: left;
-  }
-
-  input[type="submit"],
-  .infobox .url a {
-    color: var(--color-result-link-font);
-    text-decoration: none;
-    font-size: 0.9rem;
-
-    &:hover {
-      text-decoration: underline;
-    }
-  }
-}
-
-#corrections {
-  grid-area: corrections;
-  display: flex;
-  flex-flow: row wrap;
-  margin: 0 0 1em 0;
-
-  h4,
-  input[type="submit"] {
-    display: inline-block;
-    padding: 0.5rem;
-    margin: 0.5rem;
-  }
-
-  input[type="submit"] {
-    font-size: 0.8rem;
-    .rounded-corners-tiny;
-  }
-}
-
-#infoboxes .title,
-#suggestions .title,
-#search_url .title,
-#engines_msg .title,
-#apis .title {
-  margin: 2em 0 0.5em 0;
-  color: var(--color-base-font);
-}
-
-summary.title {
-  cursor: pointer;
-  padding-top: 1em;
-}
-
-.sidebar-collapsible {
-  border-top: 1px solid var(--color-sidebar-border);
-  padding-bottom: 0.5em;
-}
-
-#sidebar-end-collapsible {
-  border-bottom: 1px solid var(--color-sidebar-border);
-  width: 100%;
-}
-
-#answers {
-  grid-area: answers;
-  background: var(--color-answer-background);
-  padding: @result-padding;
-  margin: 1rem 0;
-  margin-top: 0;
-  color: var(--color-answer-font);
-  .rounded-corners;
-
-  h4 {
-    display: none;
-  }
-
-  span {
-    overflow-wrap: anywhere;
-  }
-
-  .answer {
-    display: flex;
-    flex-direction: column;
-  }
-
-  .answer-url {
-    margin: 5px 10px 10px auto;
-  }
-}
-
-#infoboxes {
-  form {
-    min-width: 210px;
-  }
-}
-
-#sidebar {
-  grid-area: sidebar;
-  word-wrap: break-word;
-  color: var(--color-sidebar-font);
-
-  .infobox {
-    margin: 10px 0 10px;
-    border: 1px solid var(--color-sidebar-border);
-    padding: 1rem;
-    font-size: 0.9em;
-    .rounded-corners;
-
-    h2 {
-      margin: 0 0 0.5em 0;
-    }
-
-    img {
-      max-width: 100%;
-      max-height: 12em;
-      display: block;
-      margin: 0 auto;
-      padding: 0;
-    }
-
-    dt {
-      font-weight: bold;
-    }
-
-    .attributes {
-      dl {
-        margin: 0.5em 0;
-      }
-
-      dt {
-        display: inline;
-        margin-top: 0.5em;
-        .ltr-margin-right(0.25em);
-        margin-bottom: 0.5em;
-        .ltr-margin-left(0);
-        padding: 0;
-      }
-
-      dd {
-        display: inline;
-        margin: 0.5em 0;
-        padding: 0;
-      }
-    }
-
-    input {
-      font-size: 1em;
-    }
-
-    br {
-      clear: both;
-    }
-
-    .attributes,
-    .urls {
-      clear: both;
-    }
-  }
-}
-
-#apis {
-  input {
-    font-size: 0.9em;
-    margin: 0 10px 0 0;
-    .show-content-button;
-  }
-}
-
-#engines_msg {
-  .engine-name {
-    width: 10rem;
-  }
-
-  .response-error {
-    color: var(--color-error);
-  }
-
-  .bar-chart-value {
-    width: auto;
-  }
-}
-
-#search_url {
-  div.selectable_url {
-    pre {
-      float: left;
-      width: 200em;
-    }
-  }
-
-  button#copy_url {
-    float: right;
-    padding: 0.4rem;
-    margin-left: 0.5rem;
-    border-radius: 0.3rem;
-    display: none;    // will be shown by JS.
-  }
-}
-
-#links_on_top {
-  position: absolute;
-  .ltr-right(1rem);
-  .ltr-text-align-right();
-  top: 2.7rem;
-  padding: 0;
-  border: 0;
-  display: flex;
-  align-items: center;
-  font-size: 1em;
-  color: var(--color-search-font);
-
-  a {
-    display: flex;
-    align-items: center;
-    margin-left: 1em;
-
-    svg {
-      font-size: 1.2em;
-      .ltr-margin-right(0.125em);
-    }
-  }
-
-  a,
-  a:link *,
-  a:hover *,
-  a:visited *,
-  a:active * {
-    color: var(--color-search-font);
-  }
-}
-
-#pagination {
-  grid-area: pagination;
-
-  br {
-    clear: both;
-  }
-}
-
-.numbered_pagination {
-  display: flex;
-  flex-direction: row;
-  justify-content: center;
-  align-items: center;
-  overflow: hidden;
-}
-
-.page_number {
-  background: transparent !important;
-  color: var(--color-result-link-font) !important;
-  text-decoration: underline;
-}
-
-.page_number_current {
-  background: transparent;
-  color: var(--color-result-link-visited-font);
-  border: none;
-}
-
-#backToTop {
-  border: 1px solid var(--color-backtotop-border);
-  margin: 0;
-  padding: 0;
-  font-size: 1em;
-  background: var(--color-backtotop-background);
-  position: fixed;
-  bottom: 8rem;
-  .ltr-left(@results-width + @results-offset + (0.5 * @results-gap - 1.2em));
-  transition: opacity 0.5s;
-  opacity: 0;
-  pointer-events: none;
-  .rounded-corners;
-
-  a {
-    display: block;
-    margin: 0;
-    padding: 0.7em;
-  }
-
-  a,
-  a:visited,
-  a:hover,
-  a:active {
-    color: var(--color-backtotop-font);
-  }
-}
-
-#results.scrolling #backToTop {
-  opacity: 1;
-  pointer-events: all;
-}
-
-/*
-  tablet layout
-*/
-
-.results-tablet() {
-  #links_on_top {
-    span {
-      display: none;
-    }
-  }
-
-  .page_with_header {
-    margin: 2rem 0.5rem;
-    width: auto;
-  }
-
-  #infoboxes {
-    position: inherit;
-    max-width: inherit;
-
-    .infobox {
-      clear: both;
-
-      img {
-        .ltr-float-left();
-        max-width: 10em;
-        margin-top: 0.5em;
-        .ltr-margin-right(0.5em);
-        margin-bottom: 0.5em;
-        .ltr-margin-left(0);
-      }
-    }
-  }
-
-  #sidebar {
-    margin: 0 @results-tablet-offset @results-margin @results-tablet-offset;
-    padding: 0;
-    float: none;
-    border: none;
-    width: auto;
-
-    input {
-      border: 0;
-    }
-  }
-
-  .result {
-    .thumbnail {
-      max-width: 98%;
-    }
-
-    .url {
-      span.url {
-        display: block;
-        white-space: nowrap;
-        text-overflow: ellipsis;
-        overflow: hidden;
-        width: 100%;
-      }
-    }
-
-    .engines {
-      .ltr-float-right();
-      display: flex;
-      flex-wrap: wrap;
-      justify-content: flex-end;
-      padding: 3px 0 0 0;
-    }
-  }
-
-  .result-images {
-    border-bottom: none !important;
-  }
-
-  .image_result {
-    max-width: 98%;
-
-    img {
-      max-width: 98%;
-    }
-  }
-
-  #backToTop {
-    display: none;
-  }
-
-  #pagination {
-    margin: 2rem 0 0 0 !important;
-  }
-
-  #main_results div#results {
-    margin: 0 auto;
-    justify-content: center;
-    display: grid;
-    grid-template:
-      "corrections" min-content
-      "answers" min-content
-      "sidebar" min-content
-      "urls" 1fr
-      "pagination" min-content
-      / @results-width
-    ;
-    gap: 0;
-  }
-}
-
-@media screen and (width <= calc(@tablet - 0.5px)) {
-  #links_on_top {
-    span {
-      display: none;
-    }
-  }
-}
-
-@media screen and (width <= 52rem) {
-  body.results_endpoint {
-    #links_on_top {
-      .link_on_top_about,
-      .link_on_top_donate {
-        display: none;
-      }
-    }
-  }
-}
-
-@media screen and (min-width: @phone) and (max-width: @tablet) {
-  // when .center-alignment-yes, see style-center.less
-  // the media query includes "min-width: @phone"
-  // because the phone layout includes the tablet layout unconditionally.
-  .center-alignment-no {
-    .results-tablet();
-  }
-}
-
-/* Misc */
-
-#main_results div#results.only_template_images {
-  margin: 1rem @results-tablet-offset 0 @results-tablet-offset;
-  display: grid;
-  grid-template:
-    "corrections" min-content
-    "answers" min-content
-    "sidebar" min-content
-    "urls" 1fr
-    "pagination" min-content
-    / 100%;
-  gap: 0;
-
-  #sidebar {
-    display: none;
-  }
-
-  #urls {
-    margin: 0;
-    display: flex;
-    flex-wrap: wrap;
-  }
-
-  #urls::after {
-    flex-grow: 10;
-    content: "";
-  }
-
-  #backToTop {
-    .ltr-left(auto);
-    .ltr-right(1rem);
-  }
-
-  #pagination {
-    .ltr-margin-right(4rem);
-  }
-}
-
-/*
-  phone layout
-*/
-
-@media screen and (max-width: @phone) {
-  // based on the tablet layout
-  .results-tablet();
-
-  html {
-    background-color: var(--color-base-background-mobile);
-  }
-
-  #main_results div#results {
-    grid-template-columns: 100%;
-    margin: 0 auto;
-  }
-
-  #links_on_top {
-    top: 1.4rem;
-    .ltr-right(10px);
-  }
-
-  #main_index #links_on_top {
-    top: 0.5rem;
-    .ltr-right(0.5rem);
-  }
-
-  #results {
-    margin: 0;
-    padding: 0;
-  }
-
-  #pagination {
-    margin: 2rem 1rem 0 1rem !important;
-  }
-
-  article[data-vim-selected] {
-    border: 1px solid var(--color-result-vim-arrow);
-    .rounded-corners;
-  }
-
-  .result {
-    background: var(--color-result-background);
-    border: 1px solid var(--color-result-background);
-    margin: 1rem 2%;
-    width: 96%;
-    .rounded-corners;
-  }
-
-  .result-images {
-    margin: 0;
-    height: @results-image-row-height-phone;
-    background: var(--color-base-background-mobile);
-    width: unset;
-  }
-
-  .infobox {
-    border: none !important;
-    background-color: var(--color-sidebar-background);
-  }
-
-  .numbered_pagination {
-    display: none;
-  }
-
-  .result-paper,
-  .result-packages {
-    .attributes {
-      display: block;
-
-      div {
-        display: block;
-
-        span {
-          display: inline;
-        }
-
-        span:first-child {
-          font-weight: bold;
-        }
-
-        span:nth-child(2) {
-          .ltr-margin-left(0.5rem);
-        }
-      }
-    }
-  }
-}
-
-/*
-  small-phone layout
-*/
-
-@media screen and (max-width: @small-phone) {
-  .result-videos {
-    img.thumbnail {
-      float: none !important;
-    }
-
-    .content {
-      overflow: inherit;
-    }
-  }
-}
-
-pre code {
-  white-space: pre-wrap;
-}
diff --git a/searx/static/themes/simple/src/less/toolkit.less b/searx/static/themes/simple/src/less/toolkit.less
deleted file mode 100644
index d3fb2273b..000000000
--- a/searx/static/themes/simple/src/less/toolkit.less
+++ /dev/null
@@ -1,646 +0,0 @@
-// other solution :  http://stackoverflow.com/questions/1577598/how-to-hide-parts-of-html-when-javascript-is-disabled/13857783#13857783
-
-// stylelint-disable no-descending-specificity
-
-html.no-js .hide_if_nojs {
-  display: none;
-}
-
-html.js .show_if_nojs {
-  display: none;
-}
-
-.center {
-  text-align: center;
-}
-
-.right {
-  float: right;
-}
-
-.left {
-  float: left;
-}
-
-.invisible {
-  display: none !important;
-}
-
-.list-unstyled {
-  list-style-type: none;
-
-  li {
-    margin-top: 4px;
-    margin-bottom: 4px;
-  }
-}
-
-.danger {
-  background-color: var(--color-error-background);
-}
-
-.warning {
-  background: var(--color-warning-background);
-}
-
-.success {
-  background: var(--color-success-background);
-}
-
-.badge {
-  display: inline-block;
-  color: var(--color-toolkit-badge-font);
-  background-color: var(--color-toolkit-badge-background);
-  text-align: center;
-  white-space: nowrap;
-  vertical-align: baseline;
-  min-width: 10px;
-  padding: 1px 5px;
-  border-radius: 5px;
-}
-
-// kbd
-kbd {
-  padding: 2px 4px;
-  margin: 1px;
-  font-size: 90%;
-  color: var(--color-toolkit-kbd-font);
-  background: var(--color-toolkit-kbd-background);
-}
-
-// table
-table {
-  width: 100%;
-
-  &.striped {
-    tr {
-      border-bottom: 1px solid var(--color-settings-tr-hover);
-    }
-  }
-}
-
-th {
-  padding: 0.4em;
-}
-
-td {
-  padding: 0 4px;
-}
-
-tr {
-  &:hover {
-    background: var(--color-settings-tr-hover) !important;
-  }
-}
-
-// pre
-.pre() {
-  display: block;
-  font-size: 0.8em;
-  word-break: break-all;
-  margin: 0.1em;
-  user-select: all;
-}
-
-div.selectable_url {
-  display: block;
-  border: 1px solid var(--color-result-search-url-border);
-  padding: 4px;
-  color: var(--color-result-search-url-font);
-  margin: 0.1em;
-  overflow: hidden;
-  height: 1.2em;
-  line-height: 1.2em;
-  .rounded-corners-tiny;
-
-  pre {
-    .pre();
-  }
-}
-
-// dialog
-.dialog() {
-  position: relative;
-  display: flex;
-  padding: 1rem;
-  margin: 0 0 1em 0;
-  border: 1px solid var(--color-toolkit-dialog-border);
-  .ltr-text-align-left();
-  .rounded-corners;
-
-  .close {
-    .ltr-float-right();
-    position: relative;
-    top: -3px;
-    color: inherit;
-    font-size: 1.5em;
-  }
-
-  ul,
-  ol,
-  p {
-    margin: 1px 0 0 0;
-  }
-
-  table {
-    width: auto;
-  }
-
-  tr {
-    vertical-align: text-top;
-
-    &:hover {
-      background: transparent !important;
-    }
-  }
-
-  td {
-    padding: 0 1em 0 0;
-    padding-top: 0;
-    .ltr-padding-right(1rem);
-    padding-bottom: 0;
-    .ltr-padding-left(0);
-  }
-
-  h4 {
-    margin-top: 0.3em;
-    margin-bottom: 0.3em;
-  }
-}
-
-.dialog-error {
-  .dialog();
-
-  color: var(--color-error);
-  background: var(--color-error-background);
-  border-color: var(--color-error);
-}
-
-.dialog-error-block {
-  .dialog();
-
-  display: block;
-  color: var(--color-error);
-  background: var(--color-error-background);
-  border-color: var(--color-error);
-}
-
-.dialog-warning {
-  .dialog();
-
-  color: var(--color-warning);
-  background: var(--color-warning-background);
-  border-color: var(--color-warning);
-}
-
-.dialog-modal {
-  .dialog();
-
-  display: block;
-  background: var(--color-toolkit-dialog-background);
-  position: fixed;
-  top: 50%;
-  left: 50%;
-  margin: 0 auto;
-  transform: translate(-50%, -50%);
-  z-index: 5000;
-
-  h3 {
-    margin-top: 0;
-  }
-}
-
-// btn-collapse
-.btn-collapse {
-  cursor: pointer;
-}
-
-//
-.scrollx {
-  overflow: auto hidden;
-  display: block;
-  padding: 0;
-  margin: 0;
-  border: none;
-}
-
-/* -- tabs -- */
-.tabs .tabs > label {
-  font-size: 90%;
-}
-
-ul.tabs {
-  border-bottom: 1px solid var(--color-toolkit-tabs-section-border);
-  list-style: none;
-  padding-left: 0;
-
-  li {
-    display: flex;
-  }
-}
-
-.tabs {
-  display: flex;
-  flex-wrap: wrap;
-  width: 100%;
-  min-width: 100%;
-
-  & > * {
-    order: 2;
-  }
-
-  & > input[type=radio] {
-    display: none;
-  }
-
-  & > label,
-  & > li > a {
-    order: 1;
-    padding: 0.7em;
-    margin: 0 0.7em;
-    letter-spacing: 0.5px;
-    text-transform: uppercase;
-    border: solid var(--color-toolkit-tabs-label-border);
-    border-width: 0 0 2px 0;
-    color: unset;
-
-    .disable-user-select();
-
-    cursor: pointer;
-
-    &.active {
-      border-bottom: 2px solid var(--color-categories-item-border-selected);
-      background: var(--color-categories-item-selected);
-      color: var(--color-categories-item-selected-font);
-    }
-  }
-
-  & > label:hover,
-  & > li > a:hover {
-    border-bottom: 2px solid var(--color-categories-item-border-selected);
-  }
-
-  & > section {
-    min-width: 100%;
-    padding: 0.7rem 0;
-    box-sizing: border-box;
-    border-top: 1px solid var(--color-toolkit-tabs-section-border);
-    display: none;
-  }
-
-  // default selection
-  & > label:last-of-type {
-    border-bottom: 2px solid var(--color-categories-item-border-selected);
-    background: var(--color-categories-item-selected);
-    color: var(--color-categories-item-selected-font);
-    letter-spacing: -0.1px;
-  }
-
-  & > section:last-of-type {
-    display: block;
-  }
-}
-
-html body .tabs > input:checked {
-  ~ section {
-    display: none;
-  }
-
-  ~ label {
-    position: inherited;
-    background: inherit;
-    border-bottom: 2px solid transparent;
-    font-weight: normal;
-    color: inherit;
-
-    &:hover {
-      border-bottom: 2px solid var(--color-categories-item-border-selected);
-    }
-  }
-
-  + label {
-    border-bottom: 2px solid var(--color-categories-item-border-selected);
-    background: var(--color-categories-item-selected);
-    color: var(--color-categories-item-selected-font);
-  }
-
-  + label + section {
-    display: block;
-  }
-}
-
-/* -- select -- */
-select {
-  height: 2.4rem;
-  margin-top: 0;
-  .ltr-margin-right(1rem);
-  margin-bottom: 0;
-  .ltr-margin-left(0);
-  padding: 0.2rem !important;
-  color: var(--color-search-font);
-  font-size: 0.9rem;
-  z-index: 100;
-
-  &:hover,
-  &:focus {
-    cursor: pointer;
-  }
-}
-
-@supports ((background-position-x: 100%) and ((appearance: none) or (-webkit-appearance: none) or (-moz-appearance: none))) {
-  select {
-    appearance: none;
-    -webkit-appearance: none;
-    -moz-appearance: none;
-    border-width: 0 2rem 0 0;
-    border-color: transparent;
-    background: data-uri('image/svg+xml;charset=UTF-8', @select-light-svg-path) no-repeat;
-    background-position-x: calc(100% + 2rem);
-    background-size: 2rem;
-    background-origin: content-box;
-    background-color: var(--color-toolkit-select-background);
-    outline: medium none;
-    text-overflow: ellipsis;
-    .rounded-corners-tiny;
-
-    &:hover,
-    &:focus {
-      background-color: var(--color-toolkit-select-background-hover);
-    }
-
-    option {
-      background-color: var(--color-base-background);
-    }
-  }
-
-  @media (prefers-color-scheme: dark) {
-    html.theme-auto select,
-    html.theme-dark select {
-      background-image: data-uri('image/svg+xml;charset=UTF-8', @select-dark-svg-path);
-    }
-  }
-
-  html.theme-dark select {
-    background-image: data-uri('image/svg+xml;charset=UTF-8', @select-dark-svg-path);
-  }
-}
-
-/* -- checkbox-onoff -- */
-input.checkbox-onoff[type="checkbox"] {
-  -webkit-appearance: none;
-  -moz-appearance: none;
-  appearance: none;
-  cursor: pointer;
-  display: inline-block;
-  width: 2.5em;
-  height: 0.7em;
-  box-shadow: none !important;
-  margin: 0 16px;
-  border-radius: 10px;
-  position: relative;
-
-  /* focus & hover */
-  &:focus,
-  &:hover {
-    outline: none;
-  }
-
-  &:focus::after {
-    content: "";
-    position: absolute;
-    width: 3.5em;
-    height: 1.65em;
-    border: 1px solid var(--color-btn-background);
-    border-radius: 12px;
-    box-shadow: var(--color-btn-background) 0 0 3px;
-    z-index: 1200;
-    top: -0.55em;
-    left: -0.6em;
-  }
-
-  &::before {
-    position: absolute;
-    top: -0.5em;
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    font-size: 0.75em;
-    width: 1.875em;
-    height: 1.875em;
-    border-radius: 50%;
-  }
-}
-
-/* check mark
-reversed-checkbox displays unchecked checkedboxes as checked, and vice versa.
-see https://github.com/searxng/searxng/blob/3408d061aab9abc6168fec9bbc6deab71b236dac/searx/templates/simple/preferences.html#L313
-*/
-input.checkbox-onoff[type="checkbox"],
-input.checkbox-onoff.reversed-checkbox[type="checkbox"]:checked {
-  background: var(--color-toolkit-checkbox-onoff-off-background);
-
-  &::before {
-    left: -0.5em;
-    content: "\2715";
-    color: var(--color-toolkit-checkbox-onoff-off-mark-color);
-    background: var(--color-toolkit-checkbox-onoff-off-mark-background);
-  }
-}
-
-input.checkbox-onoff[type="checkbox"]:checked,
-input.checkbox-onoff.reversed-checkbox[type="checkbox"] {
-  background: var(--color-toolkit-checkbox-onoff-on-background);
-
-  &::before {
-    left: calc(100% - 1.5em);
-    content: "\2713";
-    color: var(--color-toolkit-checkbox-onoff-on-mark-color);
-    background: var(--color-toolkit-checkbox-onoff-on-mark-background);
-  }
-}
-
-/* -- checkbox -- */
-@supports (transform: rotate(-45deg)) {
-  input[type=checkbox]:not(.checkbox-onoff) {
-    -webkit-appearance: none;
-    -moz-appearance: none;
-    appearance: none;
-
-    width: 20px;
-    height: 20px;
-    cursor: pointer;
-    position: relative;
-    top: 0;
-    left: 0;
-    border: 2px solid var(--color-toolkit-checkbox-input-border);
-    .rounded-corners(0.3em);
-
-    &::after {
-      content: '';
-      width: 9px;
-      height: 5px;
-      position: absolute;
-      top: 3px;
-      left: 2px;
-      border: 3px solid var(--color-toolkit-checkbox-label-border);
-      border-top: none;
-      border-right: none;
-      background: transparent;
-      opacity: 0;
-      transform: rotate(-45deg);
-    }
-
-    &:checked::after {
-      border-color: var(--color-toolkit-checkbox-input-border);
-      opacity: 1;
-    }
-  }
-
-  // disabled : can't be focused, show only the check mark
-  input[type=checkbox][disabled]:not(.checkbox-onoff) {
-    border: inherit;
-    background-color: transparent !important;
-    cursor: inherit;
-  }
-
-  // if not checked and possible to checked then display a "light" check mark on hover
-  input.checkbox[type=checkbox]:not(:checked, [disabled], .checkbox-onoff):hover::after {
-    opacity: 0.5;
-  }
-}
-
-@media screen and (max-width: @phone) {
-  .tabs > label {
-    width: 100%;
-  }
-}
-
-/* -- loader -- */
-.loader,
-.loader::after {
-  border-radius: 50%;
-  width: 2em;
-  height: 2em;
-}
-
-.loader {
-  margin: 1em auto;
-  font-size: 10px;
-  position: relative;
-  text-indent: -9999em;
-  border-top: 0.5em solid var(--color-toolkit-loader-border);
-  border-right: 0.5em solid var(--color-toolkit-loader-border);
-  border-bottom: 0.5em solid var(--color-toolkit-loader-border);
-  border-left: 0.5em solid var(--color-toolkit-loader-borderleft);
-  -webkit-transform: translateZ(0);
-  -ms-transform: translateZ(0);
-  transform: translateZ(0);
-  -webkit-animation: load8 1.2s infinite linear;
-  animation: load8 1.2s infinite linear;
-}
-
-@-webkit-keyframes load8 {
-  0% {
-    -webkit-transform: rotate(0deg);
-    transform: rotate(0deg);
-  }
-
-  100% {
-    -webkit-transform: rotate(360deg);
-    transform: rotate(360deg);
-  }
-}
-
-@keyframes load8 {
-  0% {
-    -webkit-transform: rotate(0deg);
-    transform: rotate(0deg);
-  }
-
-  100% {
-    -webkit-transform: rotate(360deg);
-    transform: rotate(360deg);
-  }
-}
-
-/* -- engine-tooltip -- */
-.engine-tooltip {
-  display: none;
-  position: absolute;
-  padding: 0.5rem 1rem;
-  margin: 0 0 0 2rem;
-  border: 1px solid var(--color-toolkit-engine-tooltip-border);
-  background: var(--color-toolkit-engine-tooltip-background);
-  font-size: 14px;
-  font-weight: normal;
-  z-index: 5000;
-  text-align: left;
-  .rounded-corners;
-}
-
-th:hover .engine-tooltip,
-td:hover .engine-tooltip,
-.engine-tooltip:hover {
-  display: inline-block;
-}
-
-/* -- stacked bar chart -- */
-.stacked-bar-chart {
-  margin: 0;
-  padding: 0 0.125rem 0 4rem;
-  width: 100%;
-  width: -moz-available;
-  width: -webkit-fill-available;
-  width: fill;
-  flex-flow: row nowrap;
-  align-items: center;
-  display: inline-flex;
-}
-
-.stacked-bar-chart-value {
-  width: 3rem;
-  display: inline-block;
-  position: absolute;
-  padding: 0 0.5rem;
-  text-align: right;
-}
-
-.stacked-bar-chart-base {
-  display: flex;
-  flex-shrink: 0;
-  flex-grow: 0;
-  flex-basis: unset;
-}
-
-.stacked-bar-chart-median {
-  .stacked-bar-chart-base();
-
-  background: var(--color-base-font);
-  border: 1px solid rgba(var(--color-base-font-rgb), 0.9);
-  padding: 0.3rem 0;
-}
-
-.stacked-bar-chart-rate80 {
-  .stacked-bar-chart-base();
-
-  background: transparent;
-  border: 1px solid rgba(var(--color-base-font-rgb), 0.3);
-  padding: 0.3rem 0;
-}
-
-.stacked-bar-chart-rate95 {
-  .stacked-bar-chart-base();
-
-  background: transparent;
-  border-bottom: 1px dotted rgba(var(--color-base-font-rgb), 0.5);
-  padding: 0;
-}
-
-.stacked-bar-chart-rate100 {
-  .stacked-bar-chart-base();
-
-  background: transparent;
-  border-left: 1px solid rgba(var(--color-base-font-rgb), 0.9);
-  padding: 0.4rem 0;
-  width: 1px;
-}
diff --git a/searx/static/themes/simple/src/less/toolkit_loader.less b/searx/static/themes/simple/src/less/toolkit_loader.less
deleted file mode 100644
index 8b705e42b..000000000
--- a/searx/static/themes/simple/src/less/toolkit_loader.less
+++ /dev/null
@@ -1,29 +0,0 @@
-.loader,
-.loader::after {
-  border-radius: 50%;
-  width: 10em;
-  height: 10em;
-}
-
-.loader {
-  margin: 60px auto;
-  font-size: 10px;
-  position: relative;
-  text-indent: -9999em;
-  border-top: 1.1em solid var(--color-loading-indicator);
-  border-right: 1.1em solid var(--color-loading-indicator);
-  border-bottom: 1.1em solid var(--color-loading-indicator);
-  border-left: 1.1em solid var(--color-loading-indicator-gap);
-  transform: translateZ(0);
-  animation: load8 1.1s infinite linear;
-}
-
-@keyframes load8 {
-  0% {
-    transform: rotate(0deg);
-  }
-
-  100% {
-    transform: rotate(360deg);
-  }
-}