feat: some nice animations for settings areas missing it & fix update video

src/interface/components/FeedbackModal.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
-  import { fade } from "svelte/transition";
+  import { fade, scale } from "svelte/transition";
-  import { onMount } from "svelte";
+  import { onMount, tick } from "svelte";
   import Switch from "./Switch.svelte";
   import {
     FEEDBACK_CATEGORIES,
@@ -23,6 +23,7 @@
     type FeedbackStatusItem,
   } from "@/seqta/utils/feedback/client";
   import { settingsState } from "@/seqta/utils/listeners/SettingsState";
+  import Spinner from "./Spinner.svelte";
 
   let { onClose, initialFeedbackId = null } = $props<{
     onClose: () => void;
@@ -65,6 +66,63 @@
   const btnPrimary = $derived(
     `${btn} ${isDark ? "bg-zinc-200 text-zinc-900" : "bg-zinc-800 text-white"}`,
   );
+  const panelKey = $derived(
+    tab === "send"
+      ? successId
+        ? "send-success"
+        : "send-form"
+      : selectedItem
+        ? `status-${selectedItem.id}`
+        : "status-list",
+  );
+
+  let panelBodyEl = $state<HTMLDivElement | null>(null);
+  let panelHeightPx = $state<number | null>(null);
+
+  const panelHeightEase = "cubic-bezier(0.22, 1, 0.36, 1)";
+  const panelHeightMotion = $derived(
+    $settingsState.animations && panelHeightPx !== null
+      ? `height 280ms ${panelHeightEase}`
+      : "none",
+  );
+
+  function measurePanelHeight() {
+    if (!panelBodyEl) return;
+    panelHeightPx = panelBodyEl.scrollHeight;
+  }
+
+  function panelMeasure(node: HTMLDivElement) {
+    panelBodyEl = node;
+
+    const update = () => {
+      panelHeightPx = node.scrollHeight;
+    };
+
+    update();
+    const ro = new ResizeObserver(() => update());
+    ro.observe(node);
+
+    return {
+      destroy() {
+        ro.disconnect();
+        if (panelBodyEl === node) panelBodyEl = null;
+      },
+    };
+  }
+
+  $effect(() => {
+    panelKey;
+    includeContact;
+    errorMessage;
+    statusLoading;
+    statusItems.length;
+    selectedItem;
+    void tick().then(() => measurePanelHeight());
+  });
+
+  function isStatusDetailKey(key: string): boolean {
+    return key.startsWith("status-") && key !== "status-list";
+  }
 
   function errText(e: unknown): string {
     if (e instanceof FeedbackApiError) return e.message;
@@ -112,6 +170,7 @@
   }
 
   onMount(() => {
+    void tick().then(() => measurePanelHeight());
     if (typeof initialFeedbackId === "string" && initialFeedbackId) {
       void openStatusItem(initialFeedbackId);
     }
@@ -166,11 +225,11 @@
   }}
   role="button"
   tabindex="-1"
-  transition:fade={{ duration: 150 }}
+  transition:fade={{ duration: $settingsState.animations ? 200 : 0 }}
 >
   <!-- svelte-ignore a11y_no_static_element_interactions -->
   <div
-    class="p-5 mx-4 w-full max-w-lg max-h-[90vh] overflow-y-auto rounded-2xl shadow-2xl border text-[18px] {isDark
+    class="feedback-dialog p-5 mx-4 w-full max-w-lg max-h-[90vh] overflow-y-auto rounded-2xl shadow-2xl border text-[18px] {isDark
       ? 'bg-zinc-800 text-white border-zinc-700'
       : 'bg-white text-zinc-900 border-zinc-200'}"
     onclick={(e) => e.stopPropagation()}
@@ -179,6 +238,12 @@
     aria-modal="true"
     aria-labelledby="feedback-modal-title"
     tabindex="-1"
+    in:scale={{
+      duration: $settingsState.animations ? 280 : 0,
+      start: 0.92,
+      opacity: 0,
+      easing: (t) => 1 - Math.pow(1 - t, 3),
+    }}
   >
     <div
       class="flex gap-1 p-1 mb-4 rounded-full {isDark ? 'bg-zinc-900' : 'bg-zinc-100'}"
@@ -193,8 +258,13 @@
       </button>
     </div>
 
-    {#if tab === "send"}
+    <div
-      {#if successId}
+      class="feedback-panel"
+      style:height={panelHeightPx === null ? "auto" : `${panelHeightPx}px`}
+      style:transition={panelHeightMotion}
+    >
+      <div class="feedback-panel__body" use:panelMeasure>
+    {#if panelKey === "send-success" && successId}
         <h2 id="feedback-modal-title" class="mb-3 text-xl font-bold">Thanks for the feedback</h2>
         <p class="mb-2 text-zinc-600 dark:text-zinc-300">Reference ID:</p>
         <p class="mb-4 px-3 py-2 font-mono text-base rounded-lg {isDark ? 'bg-zinc-900' : 'bg-zinc-100'} break-all">{successId}</p>
@@ -202,7 +272,7 @@
           <button type="button" class={btnMuted} onclick={() => successId && openStatusItem(successId)}>Check status</button>
           <button type="button" class={btnPrimary} onclick={onClose}>Done</button>
         </div>
-      {:else}
+      {:else if panelKey === "send-form"}
         <h2 id="feedback-modal-title" class="mb-1 text-xl font-bold">Send feedback</h2>
         <p class="mb-4 text-zinc-600 dark:text-zinc-400">Anonymous by default. Contact and school details are optional.</p>
 
@@ -274,8 +344,7 @@
             </button>
           </div>
         </div>
-      {/if}
+    {:else if isStatusDetailKey(panelKey) && selectedItem}
-    {:else if selectedItem}
       <div class="flex items-start justify-between gap-3 mb-3">
         <h2 id="feedback-modal-title" class="text-xl font-bold">Feedback status</h2>
         <button type="button" class="{btnMuted} !text-base !px-3 !py-1.5" onclick={() => { selectedItem = null; void loadStatusList(); }}>Back</button>
@@ -292,7 +361,7 @@
       {/if}
       {#if statusError}<p class="mb-3 text-red-600 dark:text-red-400" role="alert">{statusError}</p>{/if}
       <div class="flex gap-3 justify-end">
-        <button type="button" class={btnMuted} onclick={() => openStatusItem(selectedItem.id)} disabled={statusLoading}>
+        <button type="button" class={btnMuted} onclick={() => openStatusItem(selectedItem!.id)} disabled={statusLoading}>
           {statusLoading ? "Refreshing…" : "Refresh"}
         </button>
         <button type="button" class={btnPrimary} onclick={onClose}>Close</button>
@@ -306,7 +375,15 @@
       </div>
       {#if statusError}<p class="mb-3 text-red-600 dark:text-red-400" role="alert">{statusError}</p>{/if}
       {#if statusLoading && !statusItems.length}
-        <p class="text-zinc-500">Loading…</p>
+        <div class="feedback-loading" aria-busy="true" aria-live="polite">
+          <Spinner size="md" />
+          <p class="text-zinc-500">Checking your feedback…</p>
+          <div class="feedback-loading__skeleton" aria-hidden="true">
+            <span></span>
+            <span></span>
+            <span></span>
+          </div>
+        </div>
       {:else if !statusItems.length}
         <p class="mb-4 text-zinc-500">No feedback yet.</p>
         <button type="button" class={btnPrimary} onclick={() => selectTab("send")}>Send feedback</button>
@@ -336,8 +413,69 @@
     {/if}
       </div>
     </div>
+  </div>
+</div>
 
 <style>
+  .feedback-dialog {
+    display: flex;
+    flex-direction: column;
+  }
+
+  .feedback-panel {
+    position: relative;
+    overflow: hidden;
+    min-height: 0;
+  }
+
+  .feedback-panel__body {
+    width: 100%;
+  }
+
+  .feedback-loading {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    gap: 0.75rem;
+    min-height: 14rem;
+    padding: 1rem 0 1.5rem;
+  }
+
+  .feedback-loading__skeleton {
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+    width: 100%;
+    margin-top: 0.5rem;
+  }
+
+  .feedback-loading__skeleton span {
+    display: block;
+    height: 3.5rem;
+    border-radius: 0.5rem;
+    background: color-mix(in srgb, currentColor 8%, transparent);
+    animation: feedback-skeleton-pulse 1.2s ease-in-out infinite;
+  }
+
+  .feedback-loading__skeleton span:nth-child(2) {
+    animation-delay: 0.15s;
+  }
+
+  .feedback-loading__skeleton span:nth-child(3) {
+    animation-delay: 0.3s;
+  }
+
+  @keyframes feedback-skeleton-pulse {
+    0%,
+    100% {
+      opacity: 0.45;
+    }
+    50% {
+      opacity: 0.9;
+    }
+  }
+
   :global(.feedback-field),
   :global(.feedback-field option) {
     -webkit-text-fill-color: currentColor !important;

src/interface/components/store/CloudHeader.svelte

@@ -2,6 +2,7 @@
   import { onMount } from "svelte";
   import { cloudAuth } from "@/seqta/utils/CloudAuth";
   import CloudPfpAvatar from "@/interface/components/CloudPfpAvatar.svelte";
+  import { settingsState } from "@/seqta/utils/listeners/SettingsState";
 
   let { alwaysShowUserName = false, onClick = undefined } = $props<{
     alwaysShowUserName?: boolean;
@@ -19,7 +20,7 @@
     return unsubscribe;
   });
 
-  function handleClickOutside(e: MouseEvent) {
+  function handleClickOutside(e: PointerEvent) {
     if (dropdownEl && !dropdownEl.contains(e.target as Node)) {
       open = false;
     }
@@ -28,11 +29,11 @@
   $effect(() => {
     if (open) {
       const timer = setTimeout(() => {
-        document.addEventListener("click", handleClickOutside);
+        document.addEventListener("pointerdown", handleClickOutside);
       }, 0);
       return () => {
         clearTimeout(timer);
-        document.removeEventListener("click", handleClickOutside);
+        document.removeEventListener("pointerdown", handleClickOutside);
       };
     }
   });
@@ -47,7 +48,8 @@
     open = false;
   }
 
-  function handleButtonClick() {
+  function handleButtonClick(event: MouseEvent) {
+    event.stopPropagation();
     if (onClick) {
       onClick();
     } else {
@@ -65,7 +67,7 @@
   }
 </script>
 
-<div class="relative flex items-center" bind:this={dropdownEl}>
+<div class="relative z-20 flex shrink-0 items-center" bind:this={dropdownEl}>
   <button
     type="button"
     onclick={handleButtonClick}
@@ -100,7 +102,8 @@
     <!-- svelte-ignore a11y_click_events_have_key_events -->
     <!-- svelte-ignore a11y_no_static_element_interactions -->
     <div
-      class="absolute right-0 top-full mt-2 w-80 rounded-xl border border-zinc-200 dark:border-zinc-600 bg-white dark:bg-zinc-800 shadow-xl z-[100] overflow-hidden"
+      class="cloud-dropdown absolute right-0 top-full mt-2 w-80 rounded-xl border border-zinc-200 dark:border-zinc-600 bg-white dark:bg-zinc-800 shadow-xl z-[100] overflow-hidden"
+      class:cloud-dropdown--motion={$settingsState.animations}
       onclick={(e) => e.stopPropagation()}
     >
       <div class="p-4 border-b border-zinc-200 dark:border-zinc-600">
@@ -160,3 +163,21 @@
     </div>
   {/if}
 </div>
+
+<style>
+  .cloud-dropdown--motion {
+    transform-origin: top right;
+    animation: cloud-dropdown-in 0.22s cubic-bezier(0.22, 1, 0.36, 1) forwards;
+  }
+
+  @keyframes cloud-dropdown-in {
+    from {
+      opacity: 0;
+      transform: scale(0.94) translateY(-6px);
+    }
+    to {
+      opacity: 1;
+      transform: scale(1) translateY(0);
+    }
+  }
+</style>

src/interface/components/store/Header.svelte

@@ -5,6 +5,7 @@
   import MotionDiv from "../MotionDiv.svelte";
   import PlainCloseButton from "../PlainCloseButton.svelte";
   import CloudHeader from "./CloudHeader.svelte";
+  import { settingsState } from "@/seqta/utils/listeners/SettingsState";
 
   type SettingsPage = "settings" | "themes" | "backgrounds";
 
@@ -33,10 +34,12 @@
   ];
 
   const activeIndex = $derived(tabs.findIndex((tab) => tab.id === activePage));
+  const motion = $derived($settingsState.animations ? "var(--bs-settings-ease)" : "0s");
 </script>
 
 <header
   class="flex shrink-0 items-center gap-4 border-b border-zinc-200/60 px-5 py-4 dark:border-zinc-700/50"
+  style="--bs-settings-ease: 0.28s cubic-bezier(0.22, 1, 0.36, 1)"
 >
   <button type="button" class="hidden shrink-0 lg:block" onclick={onLogoClick}>
     <img
@@ -52,7 +55,7 @@
   </button>
 
   <div
-    class="h-12 min-w-[14rem] flex-1 rounded-full bg-zinc-100/80 p-1 dark:bg-zinc-900/50"
+    class="tab-track h-12 min-w-0 flex-1 rounded-full bg-zinc-100/80 p-1 dark:bg-zinc-900/50"
     role="tablist"
     aria-label="Settings pages"
   >
@@ -68,7 +71,7 @@
           role="tab"
           aria-selected={activePage === tab.id}
           onclick={() => setActivePage(tab.id)}
-          class="relative z-10 h-10 flex-1 rounded-full px-4 text-base transition-colors duration-200
+          class="relative z-10 h-10 flex-1 whitespace-nowrap rounded-full px-4 text-base transition-colors duration-200
             {activePage === tab.id
             ? 'font-semibold text-zinc-900 dark:text-white'
             : 'text-zinc-500 hover:text-zinc-900 dark:text-zinc-400 dark:hover:text-white'}"
@@ -80,8 +83,13 @@
   </div>
 
   <div class="flex shrink-0 items-center gap-2">
-    {#if showStoreTools}
+    <div
-      <label class="relative hidden w-40 md:block xl:w-56">
+      class="store-search-wrap hidden md:block"
+      class:store-search-wrap--open={showStoreTools}
+      style="transition: max-width {motion}, opacity {motion}, transform {motion}"
+      aria-hidden={!showStoreTools}
+    >
+      <label class="relative block w-40 md:w-48 xl:w-56">
         <span class="sr-only">Search {activePage}</span>
         <svg
           class="pointer-events-none absolute left-3 top-1/2 h-4 w-4 -translate-y-1/2 text-zinc-400"
@@ -96,11 +104,14 @@
           type="search"
           placeholder={activePage === "themes" ? "Search themes" : "Search backgrounds"}
           value={searchTerm}
+          tabindex={showStoreTools ? undefined : -1}
           oninput={(event) => setSearchTerm(event.currentTarget.value)}
           class="store-search h-12 w-full rounded-full bg-zinc-100/80 pl-9 pr-4 text-sm text-zinc-900 transition-colors duration-150 placeholder:text-zinc-400 focus:bg-zinc-200/70 dark:bg-zinc-900/50 dark:text-white dark:focus:bg-zinc-700"
         />
       </label>
+    </div>
 
+    {#if showStoreTools}
       <CloudHeader />
     {/if}
 
@@ -109,6 +120,27 @@
 </header>
 
 <style>
+  .store-search-wrap {
+    overflow: hidden;
+    max-width: 0;
+    opacity: 0;
+    transform: translateX(8px);
+    pointer-events: none;
+  }
+
+  .store-search-wrap--open {
+    max-width: 10rem;
+    opacity: 1;
+    transform: translateX(0);
+    pointer-events: auto;
+  }
+
+  @media (min-width: 1280px) {
+    .store-search-wrap--open {
+      max-width: 14rem;
+    }
+  }
+
   .store-search,
   .store-search:focus,
   .store-search:focus-visible {

src/interface/pages/settings.svelte

@@ -56,7 +56,7 @@
   let compactActiveTab = $state(0);
   let activePage = $state<PageId>("settings");
   let activeSection = $state("general");
-  let activeThemeView = $state<ThemeView>("theme-settings");
+  let activeThemeView = $state<ThemeView>("theme-store");
   let activeBackgroundView = $state<BackgroundView>("background-settings");
   let selectedBackgroundCategory = $state("All");
   let backgroundCategories = $state<string[]>([]);
@@ -93,9 +93,9 @@
     {
       label: "Themes",
       items: [
+        { id: "theme-store", label: "Store" },
         { id: "theme-settings", label: "Theme settings" },
         { id: "create-theme", label: "Create theme" },
-        { id: "theme-store", label: "Store" },
       ],
     },
   ];
@@ -356,7 +356,10 @@
       searchTerm={storeSearchTerm}
       setSearchTerm={(term) => (storeSearchTerm = term)}
       {activePage}
-      setActivePage={(page) => (activePage = page)}
+      setActivePage={(page) => {
+        activePage = page;
+        if (page === "themes") activeThemeView = "theme-store";
+      }}
       showStoreTools={isStoreView}
       onLogoClick={handleDevModeToggle}
       onClose={handleClose}

src/plugins/built-in/timetable/CalendarSyncControl.svelte

@@ -66,6 +66,7 @@
   let rootEl = $state<HTMLDivElement | null>(null);
   let triggerEl = $state<HTMLButtonElement | null>(null);
   let menuEl = $state<HTMLDivElement | null>(null);
+  let modalEl = $state<HTMLDivElement | null>(null);
   let menuStyle = $state("");
   let toastTimer: ReturnType<typeof setTimeout> | null = null;
 
@@ -325,12 +326,17 @@
     const themeHost = rootEl?.closest(".bsplus-calendar-sync-mount");
     if (themeHost instanceof HTMLElement) syncCalendarSyncTheme(themeHost);
     if (menuEl) syncCalendarSyncTheme(menuEl);
+    if (modalEl) syncCalendarSyncTheme(modalEl);
   }
 
   $effect(() => {
     if (menuOpen && menuEl) syncHostTheme();
   });
 
+  $effect(() => {
+    if (modalOpen && modalEl) syncHostTheme();
+  });
+
   $effect(() => {
     if (!menuOpen || !triggerEl) return;
     updateMenuPosition();
@@ -550,6 +556,7 @@
   {#if modalOpen}
     <div
       class="bsplus-cal-modal-backdrop"
+      bind:this={modalEl}
       use:portalToBody
       onclick={(e) => {
         if (e.target === e.currentTarget && !modalBusy) closeModal();
@@ -963,6 +970,10 @@
     backdrop-filter: blur(4px);
   }
 
+  .bsplus-cal-modal-backdrop.dark .bsplus-cal-modal {
+    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
+  }
+
   .bsplus-cal-modal {
     width: min(100%, 400px);
     padding: 20px;

src/seqta/ui/Loading.ts

@@ -1,5 +1,6 @@
 import browser from "webextension-polyfill";
 import stringToHTML from "@/seqta/utils/stringToHTML";
+import { settingsState } from "@/seqta/utils/listeners/SettingsState";
 import loadingSpinner from "./loading-spinner.html?raw";
 import loadingOverlay from "./loading-overlay.html?raw";
 import { startLoadingCanvas } from "./loadingCanvas";
@@ -9,32 +10,46 @@ import {
 } from "./loadingVariants";
 
 let stopCanvas: (() => void) | null = null;
+let unbindThemeGuard: (() => void) | null = null;
+let activeLoading: {
+  host: HTMLElement;
+  shadow: ShadowRoot;
+  variant: LoadingVariant;
+} | null = null;
+
+const THEME_GUARD_KEYS = [
+  "selectedTheme",
+  "selectedColor",
+  "DarkMode",
+  "adaptiveThemeColour",
+  "selectedFont",
+] as const;
+
+const LOADING_PALETTE = {
+  line: "rgba(255, 255, 255, 0.08)",
+  lineAccent: "rgba(255, 255, 255, 0.15)",
+  lineBlue: "rgba(96, 165, 250, 0.42)",
+  grid: "rgba(255, 255, 255, 0.028)",
+  text: "#f4f4f5",
+} as const;
 
 const loadingStyles = /* css */ `
-  .bkloading {
+  :host {
-    --bk-line-color: rgba(255, 255, 255, 0.08);
+    --bk-line-color: ${LOADING_PALETTE.line};
-    --bk-line-accent: rgba(255, 255, 255, 0.15);
+    --bk-line-accent: ${LOADING_PALETTE.lineAccent};
-    --bk-line-blue: rgba(96, 165, 250, 0.42);
+    --bk-line-blue: ${LOADING_PALETTE.lineBlue};
-    --bk-grid-color: rgba(255, 255, 255, 0.028);
+    --bk-grid-color: ${LOADING_PALETTE.grid};
     --bk-spin-outer: 1s;
     --bk-spin-inner: 3s;
     --bk-spin-small: 3s;
     --bk-stage-name: bkloading-stage-in;
     --bk-stage-duration: 0.85s;
-    position: absolute;
+    color: ${LOADING_PALETTE.text};
-    inset: 0;
-    z-index: 1000000;
-    overflow: hidden;
-    contain: strict;
-    color: #f4f4f5;
-    background:
-      radial-gradient(ellipse 70% 45% at 50% 95%, rgba(37, 99, 235, 0.12), transparent 62%),
-      linear-gradient(180deg, #010101 0%, #040404 50%, #080808 100%);
     opacity: 1;
     transition: opacity 0.85s cubic-bezier(0.4, 0, 0.2, 1);
   }
 
-  .bkloading.closeLoading {
+  :host(.closeLoading) {
     opacity: 0;
     pointer-events: none;
   }
@@ -184,24 +199,80 @@ function overlayWithSpinner(): string {
   );
 }
 
-function applyVariantTheme(root: HTMLElement, variant: LoadingVariant) {
+function applyHostShell(host: HTMLElement) {
-  const { theme } = variant;
+  const shell = [
-  root.dataset.variant = variant.id;
+    ["position", "fixed"],
-  root.style.background = theme.background;
+    ["inset", "0"],
-  root.style.setProperty("--bk-spin-outer", theme.spinOuter);
+    ["z-index", "1000000"],
-  root.style.setProperty("--bk-spin-inner", theme.spinInner);
+    ["display", "block"],
-  root.style.setProperty("--bk-spin-small", theme.spinSmall);
+    ["overflow", "hidden"],
-  root.style.setProperty("--bk-stage-name", theme.stageName);
+    ["contain", "strict"],
-  root.style.setProperty("--bk-stage-duration", theme.stageDuration);
+    ["visibility", "visible"],
+    ["pointer-events", "auto"],
+    ["color", LOADING_PALETTE.text],
+    ["--bk-line-color", LOADING_PALETTE.line],
+    ["--bk-line-accent", LOADING_PALETTE.lineAccent],
+    ["--bk-line-blue", LOADING_PALETTE.lineBlue],
+    ["--bk-grid-color", LOADING_PALETTE.grid],
+  ] as const;
 
-  const vignette = root.querySelector(".bkloading__vignette") as HTMLElement | null;
+  for (const [prop, value] of shell) {
+    host.style.setProperty(prop, value, "important");
+  }
+}
+
+function applyVariantTheme(
+  host: HTMLElement,
+  shadow: ShadowRoot,
+  variant: LoadingVariant,
+) {
+  const { theme } = variant;
+  host.dataset.variant = variant.id;
+  applyHostShell(host);
+  host.style.setProperty("background", theme.background, "important");
+  host.style.setProperty("--bk-spin-outer", theme.spinOuter, "important");
+  host.style.setProperty("--bk-spin-inner", theme.spinInner, "important");
+  host.style.setProperty("--bk-spin-small", theme.spinSmall, "important");
+  host.style.setProperty("--bk-stage-name", theme.stageName, "important");
+  host.style.setProperty("--bk-stage-duration", theme.stageDuration, "important");
+
+  const vignette = shadow.querySelector(".bkloading__vignette") as HTMLElement | null;
   if (vignette) vignette.style.opacity = String(theme.vignetteOpacity);
 }
 
-function startCanvasForRoot(root: HTMLElement, variant: LoadingVariant) {
+function refreshActiveLoadingTheme() {
+  if (!activeLoading || activeLoading.host.classList.contains("closeLoading")) return;
+  applyVariantTheme(activeLoading.host, activeLoading.shadow, activeLoading.variant);
+}
+
+function bindLoadingThemeGuard() {
+  const onThemeChange = () => refreshActiveLoadingTheme();
+  for (const key of THEME_GUARD_KEYS) {
+    settingsState.register(key, onThemeChange);
+  }
+
+  const observer = new MutationObserver(onThemeChange);
+  observer.observe(document.documentElement, {
+    attributes: true,
+    attributeFilter: ["style", "class", "data-city-state"],
+  });
+
+  return () => {
+    for (const key of THEME_GUARD_KEYS) {
+      settingsState.unregister(key, onThemeChange);
+    }
+    observer.disconnect();
+  };
+}
+
+function startCanvasForRoot(
+  host: HTMLElement,
+  shadow: ShadowRoot,
+  variant: LoadingVariant,
+) {
   stopCanvas?.();
-  const canvas = root.querySelector(".bkloading__canvas") as HTMLCanvasElement | null;
+  const canvas = shadow.querySelector(".bkloading__canvas") as HTMLCanvasElement | null;
-  stopCanvas = canvas ? startLoadingCanvas(canvas, root, variant) : null;
+  stopCanvas = canvas ? startLoadingCanvas(canvas, host, variant) : null;
 }
 
 export function AppendLoadingSymbol(givenID: string, position: string) {
@@ -216,23 +287,31 @@ export function AppendLoadingSymbol(givenID: string, position: string) {
 export function stopLoadingAnimation() {
   stopCanvas?.();
   stopCanvas = null;
+  unbindThemeGuard?.();
+  unbindThemeGuard = null;
+  activeLoading = null;
 }
 
 export default function loading() {
   stopLoadingAnimation();
 
   const variant = pickLoadingVariant();
+  const host = document.createElement("div");
+  host.id = "loading";
+  host.className = "bkloading";
 
-  const loadinghtml = stringToHTML(/* html */ `
+  const shadow = host.attachShadow({ mode: "open" });
-    <div class="bkloading" id="loading" data-variant="${variant.id}">
+  shadow.innerHTML = `
     <style>${loadingStyles}</style>
     ${overlayWithSpinner()}
     <div class="bkloading__version">v${browser.runtime.getManifest().version}</div>
-    </div>`);
+  `;
 
-  const root = loadinghtml.firstChild as HTMLElement;
+  document.documentElement.append(host);
-  document.documentElement.append(root);
 
-  applyVariantTheme(root, variant);
+  applyVariantTheme(host, shadow, variant);
-  startCanvasForRoot(root, variant);
+  startCanvasForRoot(host, shadow, variant);
+
+  activeLoading = { host, shadow, variant };
+  unbindThemeGuard = bindLoadingThemeGuard();
 }

src/seqta/ui/loadingCanvas.ts

@@ -78,8 +78,8 @@ function cycle(
   return { t: fadeT, fade: true, ambient: smooth((len - tick) / revealMs) };
 }
 
-function cssVar(root: HTMLElement, name: string, fallback: string): string {
+function cssVar(_root: HTMLElement, _name: string, fallback: string): string {
-  return getComputedStyle(root).getPropertyValue(name).trim() || fallback;
+  return fallback;
 }
 
 function drawGrid(