9gag Gradient Dark - Revamped by ushruff

/* ==UserStyle==
@name           9gag Gradient Dark - Revamped
@namespace      github.com/ush-ruff
@homepageURL    https://github.com/ush-ruff/9gag-Gradient-Dark-Revamped
@version        2.13.4
@description    A better looking dark theme for 9gag.
@author         ushruff
@license        GNU GPLv3
@preprocessor   stylus
@var            checkbox restoreTagImg "Restore section tag images on sidebar" 1
@var            checkbox restoreSideBar "Restore home/trending tabs to old style" 0
@var            checkbox hideSidebarRight "Hide Right Sidebar / Featured Posts" 1
==/UserStyle== */

@-moz-document domain("9gag.com") {
  @import url('https://fonts.googleapis.com/css2?family=Rubik:wght@300;400;500;700&display=swap');
  @font-face {
    font-family: "Font Awesome";
    font-weight: 500;
    src: local("FontAwesome Regular"),
    url(https://cdn.rawgit.com/eXo-Necro/Files/ad4dfb1b/Font/fontawesome-webfont-4.7.0.ttf?raw=true);
  }
  @font-face {
    font-family: "Font Awesome";
    font-weight: 300;
    src: local("Font Awesome 5 Pro Light"),
    url(https://dl.dropboxusercontent.com/s/47z0fpgd1sx32t8/Font%20Awesome%205%20Pro-Light-300.otf);
  }
  @font-face {
    font-family: "Font Awesome";
    font-weight: 900;
    src: local("Font Awesome 5 Pro Solid"),
    url(https://dl.dropboxusercontent.com/s/e2y91lv99tje3rj/Font%20Awesome%205%20Pro-Solid-900.otf);
  }
  @font-face {
    font-family: "Font Awesome";
    font-weight: 100;
    src: local("Font Awesome 5 Brands Regular"),
    url(https://dl.dropboxusercontent.com/s/ytjt4oinha1xbnj/Font%20Awesome%205%20Brands-Regular-400.otf);
  }

  :root {
    --bg-100: #161616;
    --bg-200: #1c1c1c;
    --bg-300: #282828;
    --bg-400: #2b2b2b;
    --bg-450: #2e2e2e;
    --bg-500: #393939;
    --bg-600: #474747;
    --bg-700: #545454;
    --bg-800: #737373;
    --bg-900: #888888;
  
    --cl-100: #e9e9e9;
    --cl-200: #d9d9d9;
    --cl-300: #dadada;
    --cl-400: #cfcfcf;
    --cl-500: #b9b9b9;
    --cl-600: #a1a1a1;
    --cl-800: #8d8d8d;
    --cl-900: #999;
  
    --red-light: #f34235;
    --red-dark: #702321;
    --green-light: #13b66b;
    --blue-light: #0b8be1;
    --blue-lighter: #109ffd;
    --yellow: #dfb200;
  
    --ff: Rubik, Open Sans, sans-serif;
    --br: 0.25rem;
    --invert: brightness(10%) grayscale(1) invert(0.9);

    --cube-texture: url(https://i.imgur.com/3ZFqVkc.png);

  }
  * {
    scrollbar-width: thin;
    scrollbar-color: var(--bg-700) var(--bg-300);
  }
  ::-webkit-scrollbar {
    width: 1em;
    background: var(--bg-300);
  }
  ::-webkit-scrollbar-thumb {
    background: var(--bg-700);
    border: 3px solid var(--bg-300);
    border-radius: 100vh;
  }
  ::-webkit-scrollbar-thumb:hover {
    background-color: var(--bg-800);
  }
  html, body {
    font-family: var(--ff);
    background-color: var(--bg-100);
    color: var(--cl-500);
  }
  h1, h2, h3 {
    color: var(--cl-200);
  }
  a {
    color: var(--blue-light);
  }
  .field label {
    color: var(--cl-800);
  }
  .img-container, .sidebar {
    background-color: var(--bg-100);
  }

  /* ---- Buttons ---- */
  .ui-btn {
    font-family: var(--ff);
    border-radius: var(--br) !important;
    transition: background-color 175ms ease-in-out, color 175ms ease-in-out;
    
    &.btn-color-primary {
      background-color: var(--blue-lighter) !important;
      
      &:hover, &:focus {
        background-color: var(--blue-light) !important;
      }
    }
    &.btn-color-secondary {
      font-weight: 500;
      background-color: var(--bg-700) !important;
      color: var(--cl-200) !important;
      
      &:hover, &:focus {
        background-color: var(--bg-800) !important;
        color: var(--cl-100) !important;
      }
    }
    &.btn-color-danger {
      background-color: var(--red-dark) !important;
      color: var(--cl-300) !important;
      
      &:hover, &:focus {
        background-color: #a51b13 !important;
      }
    }
  }
  
  /* ---- Toast Notifications ---- */
  .ui-toast-view .ui-toast__default {
    background-color: var(--blue-light);
    border-color: var(--blue-lighter);
    color: var(--cl-100);
  }
  .ui-toast-view .ui-toast__info {
    background-color: var(--blue-light);
    color: var(--cl-100);
  }
  .ui-toast-view .ui-toast__notice {
    background-color: var(--yellow);
    color: var(--bg-100);
  }
  .ui-toast-view .ui-toast__error {
    background-color: var(--red-dark);
    color: var(--cl-100);
  }
  
  /* ---- Loading ---- */
  .loading a.btn {
    background-color: var(--bg-300);
    border-color: var(--bg-300);
  }
  .loading a.btn.spin {
    border-color: var(--bg-300);
  }
  .simple-spinner:not(:required)::before {
    border-top-color: var(--cl-500);
  }

  /* ---- Post not found - Error 404 ---- */
  .btn-download {
    background-image: none;
  }
  .btn-download::before {
    content: "\f063";
    font-family: "Font Awesome", var(--ff);
    font-weight: 500;
    margin-inline: -2rem 0.5rem;
  }
  
  /* ---- Back to Top ---- */
  a.back-to-top {
    background-color: var(--bg-500);
    border-color: var(--bg-700);
  }
  a.back-to-top:hover {
    background-color: var(--bg-600);
    border-color: var(--bg-800);
  }

  /* ---- Basic Modals ---- */
  .overlay.overlay-default .modal.with-footer {
    background-color: var(--bg-200);
    border-radius: var(--br);
    box-shadow: 0 0 15px 2px rgba(0, 0, 0, 0.5);

    .modal__content h2 {
      color: var(--cl-300);
    }
  }
  .overlay.overlay-default .modal__footer {
    background-color: transparent;
  }
  
  /* ---- Header ---- */
  header#top-nav, header.top-nav {
    background: linear-gradient(90deg, var(--bg-100), var(--bg-800));
    border-color: transparent;
  }
  .nav-wrap a.logo, .nav-wrap a.menu {
    filter: invert(0);
  }
  .nav-wrap a.menu:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }
  .nav-menu .secondary a {
    color: var(--cl-200)
  }
  .nav-menu .secondary a:hover {
    background-color: var(--bg-100);
    color: var(--cl-100);
  }
  .nav-menu a.new:after {
    background-color: var(--green-light);
    transition: all .25s ease;
  }
  .nav-menu a.new:hover:after {
    background-color: var(--red-light);
    box-shadow: 0 5px 8px rgba(0, 0, 0, 0.24)
  }
  .upload .btn-primary, .visitor-function .btn-primary {
    background-color: var(--bg-600);
    border: 0.0625rem solid var(--bg-700);
    color: var(--cl-300);
  }
  .upload .btn-primary:hover, .visitor-function .btn-primary:hover {
    background-color: var(--bg-500);
    border-color: var(--bg-600);
    color: var(--cl-200);
  }
  .visitor-function .btn-mute:hover {
    color: var(--cl-200);
  }
  .general-function {
    padding-right: 8px;
  }
  .general-function .search {
    position: relative;
    background: none;
  }
  .general-function .search::before {
    content: "\f002";
    position: absolute;
    inset: 0;
    text-indent: initial;
    font-family: "Font Awesome";
    font-size: 1.25em;
    font-weight: 300;
    padding: 0.5em;
    border-radius: 50%;
    color: var(--cl-900);
  }
  .general-function .search:is(:hover, :focus, .selected)::before {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--cl-100);
  }
  .user-function .btn-icon:is(.active, :hover, :focus) {
    filter: brightness(0) invert(1);
  }
  .nav-wrap .board-system__too-nav-button {
    padding-top: 0;
  }
  .nav-wrap .board-system__too-nav-button::before {
    content: "\f27a";
    font-family: "Font Awesome";
    font-size: 19px;
    font-weight: 300;
  }
  .nav-wrap .board-system__too-nav-button svg {
    display: none;
  }
  .nav-wrap .board-system__too-nav-button:is(:hover, :focus) {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--cl-300);
  }
  .nav-wrap .board-system__too-nav-button.active {
    color: var(--cl-300);
  }
  .nav-wrap .board-system__new-messages {
    background-color: var(--red-light);
    border: 1px solid var(--bg-500);
  }
  /* Upload Button */
  .upload .ui-btn.btn-color-primary {
    background-color: var(--bg-600) !important;
    border-radius: 100vw !important;
    color: transparent;
  }
  .upload .ui-btn.btn-color-primary:hover {
    background-color: var(--bg-500) !important;
  }
  .upload .btn-color-primary .ui-base-icon {
    display: none;
  }
  .upload .btn-color-primary::before {
    content: "\2b";
    font-family: "Font Awesome", var(--ff);
    font-size: 24px;
    font-weight: 500;
    margin-top: -4px;
    color: var(--cl-300);
  }
  .upload .btn-color-primary::after {
    content: "Upload";
    margin-left: -24px;
    color: var(--cl-300);
  }
  
  /* ---- Notifications ---- */
  .notification:hover {
    background: none;
  }
  .notification .bell, .notification .bell.selected, .notification .bell:hover {
    background-image: none;
  }
  .notification .bell::after {
    content: "\f0a2";
    font-family: "Font Awesome";
    color: var(--cl-900);
    font-size: 19px;
    font-weight: 500;
    line-height: 2.2rem;
  }
  .notification .bell:hover::after {
    color: var(--cl-100);
  }
  .notification .bell:hover {
    background-color: rgba(255, 255, 255, 0.1);
  }
  .notification .bell.selected {
    filter: brightness(0) invert(1);
  }
  .notification-menu {
    margin-block-start: 0.2em;
    background-color: var(--bg-200);
    border-color: var(--bg-200);
    border-radius: var(--br);
    box-shadow: 0 0 8px 2px rgba(0, 0, 0, 0.15);
  }
  .notification-menu::before {
    content: "";
    position: absolute;
    width: 1em;
    aspect-ratio: 1 / 1;
    top: calc(-0.5em - 1px);
    left: 48%;
    background-color: var(--bg-300);
    border-top: 1px solid var(--bg-200);
    border-left: 1px solid var(--bg-200);
    transform: rotate(45deg);
  }
  .notification-menu .tab-bar {
    padding-inline: 2em; 
    background-color: var(--bg-300);
    border-bottom: 1px solid var(--bg-300);
    border-radius: var(--br) var(--br) 0 0;
  }
  .notification-menu .tab-bar a {
    flex-basis: 100%;
    border-color: var(--bg-600);
    color: var(--cl-...