{
  pkgs,
  myConfig,
  ...
}: {
  id = 1;
  name = "YouTube";
  search.force = true;
  search.default = "ddg";
  extensions.force = true;
  extensions.packages = with pkgs.nur.repos.rycee.firefox-addons; [
    ublock-origin
    bitwarden
    tridactyl
  ];

  settings = {
    # --- Privacy & Hardening ---
    "browser.contentblocking.category" = "strict";
    "privacy.trackingprotection.enabled" = true;
    "privacy.resistFingerprinting" = true; # Note: Spoofs timezone and caps FPS to 60
    "geo.enabled" = false;
    "media.peerconnection.enabled" = false; # Prevents WebRTC IP leaks
    "network.dns.disablePrefetch" = true;
    "network.prefetch-next" = false;

    # --- NixOS / Hyprland Integration ---
    "widget.use-xdg-desktop-portal.file-picker" = 1; # Use native file picker

    # --- UI & Behavior ---
    "browser.compactmode.show" = true;
    "browser.tabs.closeWindowWithLastTab" = false;
    "extensions.pocket.enabled" = false;
    "extensions.screenshots.disabled" = true;
    "browser.topsites.contile.enabled" = false;
    "browser.formfill.enable" = false;
    "browser.search.suggest.enabled" = false;
    "browser.search.suggest.enabled.private" = false;
    "browser.urlbar.suggest.searches" = false;
    "browser.urlbar.showSearchSuggestionsFirst" = false;
    "browser.newtabpage.activity-stream.feeds.section.topstories" = false;
    "browser.newtabpage.activity-stream.feeds.snippets" = false;
    "browser.newtabpage.activity-stream.section.highlights.includePocket" = false;
    "browser.newtabpage.activity-stream.section.highlights.includeBookmarks" = false;
    "browser.newtabpage.activity-stream.section.highlights.includeDownloads" = false;
    "browser.newtabpage.activity-stream.section.highlights.includeVisited" = false;
    "browser.newtabpage.activity-stream.showSponsored" = false;
    "browser.newtabpage.activity-stream.system.showSponsored" = false;
    "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
    "toolkit.legacyUserProfileCustomizations.stylesheets" = true;
    "extensions.autoDisableScopes" = 0; # Enable extensions by default

    # --- Homepage & Navigation ---
    "browser.startup.homepage" = "https://youtube.com";
    "browser.newtabpage.pinned" = myConfig.firefox.newtabpage;

    # --- DNS over HTTPS (Quad9) ---
    "network.trr.mode" = 2; # Use DoH with system fallback
    "network.trr.uri" = "https://dns.quad9.net/dns-query";
  };

  userChrome = ''
    /* Hide the Navigation Bar by default */
    #nav-bar {
      height: 0px !important;
      min-height: 0px !important;
      overflow: hidden !important;
      opacity: 0 !important;
      transition: height 0.3s ease, opacity 0.3s ease !important;
      z-index: 100 !important;
    }

    /* Show the Navigation Bar on hover over the navigator toolbox */
    #navigator-toolbox:hover #nav-bar,
    #nav-bar:focus-within {
      height: 40px !important; /* Adjust based on your density settings */
      min-height: 40px !important;
      opacity: 1 !important;
    }

    /* Auto-hide Tabs Toolbar */
    #TabsToolbar {
      height: 0px !important;
      min-height: 0px !important;
      overflow: hidden !important;
      opacity: 0 !important;
      transition: height 0.3s ease, opacity 0.3s ease !important;
      z-index: 100 !important;
    }

    /* Show Tabs Toolbar on hover over the navigator toolbox */
    #navigator-toolbox:hover #TabsToolbar {
      height: 30px !important; /* Adjust based on your tab height preference */
      min-height: 30px !important;
      opacity: 1 !important;
    }

    /* Hide Bookmarks Toolbar */
    #PersonalToolbar {
      visibility: collapse !important;
    }
  '';
}