feat: redesign Cloud settings UI and switch to OAuth redirect login

- Move Cloud section inline with other settings, remove dedicated header bar
- Replace in-extension login form with browser redirect to accounts.betterseqta.org
- Background script intercepts OAuth callback URL to capture tokens
- Add animated CloudPanel overlay (same pattern as ColourPicker)
- Hide cloud sync details and profile picture setting when not signed in
- Simplify CloudSettingsSync UI, reduce text verbosity
- Fix settings download to merge keys instead of clear+set
- Add legacy-to-plugin settings migration for cloud sync
- Shorten profile picture and default page descriptions
- Make DisclaimerModal title/message dynamic
- Update CloudHeader button styling to match other buttons

src/interface/components/CloudPanel.svelte

@@ -0,0 +1,157 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { animate } from "motion";
+  import { delay } from "@/seqta/utils/delay.ts";
+  import { cloudAuth } from "@/seqta/utils/CloudAuth";
+
+  const { hidePanel } = $props<{
+    hidePanel: () => void;
+  }>();
+
+  let cloudState = $state(cloudAuth.state);
+  let background = $state<HTMLDivElement | null>(null);
+  let content = $state<HTMLDivElement | null>(null);
+  let loginError = $state<string | null>(null);
+
+  onMount(() => {
+    const unsub = cloudAuth.subscribe((s) => {
+      cloudState = s;
+    });
+
+    if (background && content) {
+      animate(
+        background,
+        { opacity: [0, 1] },
+        { duration: 0.3, ease: [0.4, 0, 0.2, 1] }
+      );
+      animate(
+        content,
+        { scale: [0.4, 1], opacity: [0, 1] },
+        { type: "spring", stiffness: 400, damping: 30 }
+      );
+    }
+
+    const handleEscapeKey = (e: KeyboardEvent) => {
+      if (e.key === "Escape") closePanel();
+    };
+    document.addEventListener("keydown", handleEscapeKey);
+
+    return () => {
+      unsub();
+      document.removeEventListener("keydown", handleEscapeKey);
+    };
+  });
+
+  async function closePanel() {
+    if (!background || !content) return;
+    animate(
+      content,
+      { scale: [1, 0.4], opacity: [1, 0] },
+      { type: "spring", stiffness: 400, damping: 30 }
+    );
+    animate(
+      background,
+      { opacity: [1, 0] },
+      { ease: [0.4, 0, 0.2, 1] }
+    );
+    await delay(400);
+    hidePanel();
+  }
+
+  function handleBackgroundClick(event: MouseEvent) {
+    if (event.target === background) closePanel();
+  }
+
+  async function handleSignIn() {
+    loginError = null;
+    const result = await cloudAuth.startLogin();
+    if (result.success) {
+      closePanel();
+    } else {
+      loginError = result.error ?? "Failed to open login page";
+    }
+  }
+
+  async function handleLogout() {
+    await cloudAuth.logout();
+  }
+
+  function getInitials(): string {
+    const u = cloudState.user;
+    if (!u) return "?";
+    if (u.displayName) return u.displayName.slice(0, 2).toUpperCase();
+    if (u.username) return u.username.slice(0, 2).toUpperCase();
+    if (u.email) return u.email.slice(0, 2).toUpperCase();
+    return "?";
+  }
+</script>
+
+<!-- svelte-ignore a11y_no_static_element_interactions -->
+<div
+  bind:this={background}
+  class="flex absolute top-0 left-0 z-50 justify-center items-center w-full h-full cursor-pointer bg-black/50"
+  onclick={handleBackgroundClick}
+  onkeydown={(e) => { if (e.key === "Enter") handleBackgroundClick; }}
+>
+  <div
+    bind:this={content}
+    class="p-5 w-[320px] bg-white rounded-xl border shadow-lg cursor-auto dark:bg-zinc-800 border-zinc-100 dark:border-zinc-700"
+  >
+    <h3 class="text-lg font-bold text-zinc-900 dark:text-white">BetterSEQTA Cloud</h3>
+    <p class="mt-0.5 text-sm text-zinc-500 dark:text-zinc-400">Account & sync</p>
+
+    <div class="mt-4">
+      {#if cloudState.isLoggedIn}
+        <div class="flex flex-col gap-4">
+          <div class="flex items-center gap-3">
+            {#if cloudState.user?.pfpUrl}
+              <img
+                src={cloudState.user.pfpUrl}
+                alt=""
+                class="w-12 h-12 rounded-full object-cover ring-2 ring-zinc-200 dark:ring-zinc-600"
+              />
+            {:else}
+              <div class="flex items-center justify-center w-12 h-12 rounded-full bg-zinc-300 dark:bg-zinc-600 text-zinc-700 dark:text-zinc-200 font-semibold text-base">
+                {getInitials()}
+              </div>
+            {/if}
+            <div class="min-w-0 flex-1">
+              <p class="text-sm font-medium text-zinc-900 dark:text-white truncate">
+                {cloudState.user?.displayName || cloudState.user?.username || cloudState.user?.email || "User"}
+              </p>
+              {#if cloudState.user?.email && cloudState.user?.email !== (cloudState.user?.displayName || cloudState.user?.username)}
+                <p class="text-xs text-zinc-500 dark:text-zinc-400 truncate">{cloudState.user.email}</p>
+              {/if}
+            </div>
+          </div>
+          <button
+            type="button"
+            onclick={handleLogout}
+            class="w-full px-4 py-2.5 text-sm font-medium rounded-lg bg-zinc-200 dark:bg-zinc-700 text-zinc-900 dark:text-white hover:bg-zinc-300 dark:hover:bg-zinc-600 transition-colors duration-200"
+          >
+            Sign out
+          </button>
+        </div>
+      {:else}
+        <div class="flex flex-col gap-3">
+          <p class="text-sm text-zinc-600 dark:text-zinc-400">
+            Sign in to sync settings across devices, use your cloud profile picture, and more.
+          </p>
+          <button
+            type="button"
+            onclick={handleSignIn}
+            class="w-full px-4 py-2.5 text-sm font-medium rounded-lg bg-zinc-800 dark:bg-zinc-200 text-white dark:text-zinc-900 hover:bg-zinc-700 dark:hover:bg-zinc-300 transition-colors duration-200"
+          >
+            Sign in with BetterSEQTA Cloud
+          </button>
+          {#if loginError}
+            <p class="text-xs text-red-600 dark:text-red-400">{loginError}</p>
+          {/if}
+          <p class="text-xs text-center text-zinc-400 dark:text-zinc-500">
+            Opens accounts.betterseqta.org in a new tab
+          </p>
+        </div>
+      {/if}
+    </div>
+  </div>
+</div>

src/interface/components/CloudSettingsSync.svelte

@@ -2,17 +2,17 @@
   import browser from "webextension-polyfill";
   import { cloudAuth } from "@/seqta/utils/CloudAuth";
   import { settingsState } from "@/seqta/utils/listeners/SettingsState";
-  import DisclaimerModal from "./DisclaimerModal.svelte";
   import Button from "./Button.svelte";
   import Switch from "./Switch.svelte";
 
+  let { showDisclaimer } = $props<{
+    showDisclaimer: (onConfirm: () => void, onCancel: () => void) => void;
+  }>();
+
   let cloudState = $state(cloudAuth.state);
   let busy = $state(false);
   let statusMessage = $state<string | null>(null);
   let statusError = $state<string | null>(null);
-  let lastUploadAt = $state<string | null>(null);
-  let lastDownloadAt = $state<string | null>(null);
-  let showRestoreConfirm = $state(false);
 
   $effect(() => {
     const unsub = cloudAuth.subscribe((s) => {
@@ -21,13 +21,6 @@
     return unsub;
   });
 
-  function formatNow(): string {
-    return new Date().toLocaleString(undefined, {
-      dateStyle: "short",
-      timeStyle: "short",
-    });
-  }
-
   async function upload() {
     const token = await cloudAuth.getStoredToken();
     if (!token) return;
@@ -40,8 +33,7 @@
         token,
       })) as { success?: boolean; error?: string };
       if (res?.success) {
-        statusMessage = "Settings saved to the cloud.";
-        lastUploadAt = formatNow();
+        statusMessage = "Settings uploaded.";
       } else {
         statusError = res?.error ?? "Upload failed";
       }
@@ -53,11 +45,10 @@
   }
 
   function promptDownload() {
-    showRestoreConfirm = true;
+    showDisclaimer(confirmDownload, () => {});
   }
 
   async function confirmDownload() {
-    showRestoreConfirm = false;
     const token = await cloudAuth.getStoredToken();
     if (!token) return;
     busy = true;
@@ -69,8 +60,7 @@
         token,
       })) as { success?: boolean; error?: string; notFound?: boolean };
       if (res?.success) {
-        statusMessage = "Settings restored from the cloud. SEQTA tabs were reloaded.";
-        lastDownloadAt = formatNow();
+        statusMessage = "Settings restored.";
       } else {
         statusError = res?.error ?? "Download failed";
       }
@@ -82,22 +72,13 @@
   }
 </script>
 
-<div
-  class="w-full rounded-xl border border-zinc-200/60 bg-zinc-50/80 px-4 py-2.5 dark:border-zinc-700/50 dark:bg-zinc-900/40"
->
-  <h3 class="text-xs font-bold text-zinc-800 dark:text-zinc-100">Cloud settings backup</h3>
-  <p class="mt-0.5 text-[11px] leading-snug text-zinc-500 dark:text-zinc-400">
-    Upload copies this browser’s BetterSEQTA+ settings to your account. Download replaces local settings with the
-    cloud copy (your sign-in stays on this device).
-  </p>
-
-  <div
-    class="mt-2 flex flex-col gap-2 rounded-lg border border-zinc-200/50 bg-white/60 px-3 py-2.5 dark:border-zinc-600/40 dark:bg-zinc-800/40"
-  >
-    <div class="flex items-start justify-between gap-3">
-      <p class="min-w-0 flex-1 pt-0.5 text-[11px] font-semibold leading-tight text-zinc-800 dark:text-zinc-100">
-        Automatic sync
-      </p>
+{#if cloudState.isLoggedIn}
+  <div class="flex flex-col gap-2.5">
+    <div class="flex items-center justify-between gap-3">
+      <div>
+        <p class="text-[11px] font-semibold text-zinc-800 dark:text-zinc-100">Automatic sync</p>
+        <p class="text-[10px] text-zinc-500 dark:text-zinc-400">Syncs settings when SEQTA loads and when you make changes</p>
+      </div>
       <div class="shrink-0">
         <Switch
           state={$settingsState.autoCloudSettingsSync !== false}
@@ -105,62 +86,35 @@
         />
       </div>
     </div>
-    <p class="text-[10px] leading-snug text-zinc-500 dark:text-zinc-400">
-      When signed in, each time SEQTA loads and also hourly, if the cloud backup is newer it will replace local
-      settings. Settings you change will upload shortly after you adjust them.
-    </p>
-    <p class="text-[10px] leading-snug text-zinc-500 dark:text-zinc-400">
-      Passwords, tokens, and other sensitive data are not included in the backup.
+
+    <div class="flex flex-wrap gap-2">
+      <Button
+        text={busy ? "Please wait\u2026" : "Upload"}
+        onClick={upload}
+        disabled={busy}
+      />
+      <Button
+        text={busy ? "Please wait\u2026" : "Download"}
+        onClick={promptDownload}
+        disabled={busy}
+      />
+    </div>
+
+    {#if statusMessage}
+      <p class="text-[11px] text-emerald-600 dark:text-emerald-400">{statusMessage}</p>
+    {/if}
+    {#if statusError}
+      <p class="text-[11px] text-red-600 dark:text-red-400">{statusError}</p>
+    {/if}
+
+    <p class="text-[10px] text-zinc-400 dark:text-zinc-500">
+      Passwords and tokens are never synced.
       <a
         href="https://betterseqta.org/privacy"
         target="_blank"
         rel="noopener noreferrer"
-        class="ml-0.5 inline font-medium text-emerald-600 underline decoration-emerald-600/50 underline-offset-2 transition-all duration-200 hover:text-emerald-700 hover:decoration-emerald-700 focus:outline-none focus-visible:ring-2 focus-visible:ring-emerald-500 focus-visible:ring-offset-2 focus-visible:ring-offset-white dark:text-emerald-400 dark:decoration-emerald-400/50 dark:hover:text-emerald-300 dark:focus-visible:ring-offset-zinc-800 rounded-sm"
-      >
-        Privacy policy
-      </a>
+        class="font-medium text-emerald-600 underline decoration-emerald-600/50 underline-offset-2 hover:text-emerald-700 dark:text-emerald-400 dark:hover:text-emerald-300 rounded-sm"
+      >Privacy policy</a>
     </p>
   </div>
-
-  <div class="mt-2 flex flex-wrap gap-2">
-    <Button
-      text={busy ? "Please wait…" : "Upload to cloud"}
-      onClick={upload}
-      disabled={busy || !cloudState.isLoggedIn}
-    />
-    <Button
-      text={busy ? "Please wait…" : "Download from cloud"}
-      onClick={promptDownload}
-      disabled={busy || !cloudState.isLoggedIn}
-    />
-  </div>
-
-  {#if !cloudState.isLoggedIn}
-    <p class="mt-2 text-[11px] text-zinc-500 dark:text-zinc-400">
-      Sign in from the BetterSEQTA Cloud header above to sync settings.
-    </p>
-  {/if}
-
-  {#if statusMessage}
-    <p class="mt-2 text-[11px] text-emerald-600 dark:text-emerald-400">{statusMessage}</p>
-  {/if}
-  {#if statusError}
-    <p class="mt-2 text-[11px] text-red-600 dark:text-red-400">{statusError}</p>
-  {/if}
-  {#if lastUploadAt || lastDownloadAt}
-    <p class="mt-1 text-[10px] text-zinc-400 dark:text-zinc-500">
-      {#if lastUploadAt}<span>Last upload: {lastUploadAt}</span>{/if}
-      {#if lastUploadAt && lastDownloadAt}<span class="mx-1">·</span>{/if}
-      {#if lastDownloadAt}<span>Last download: {lastDownloadAt}</span>{/if}
-    </p>
-  {/if}
-</div>
-
-{#if showRestoreConfirm}
-  <DisclaimerModal
-    title="Restore from cloud?"
-    message="This will replace BetterSEQTA+ settings in this browser with your cloud backup. Your BetterSEQTA Cloud sign-in on this device will be kept. Continue?"
-    onConfirm={confirmDownload}
-    onCancel={() => (showRestoreConfirm = false)}
-  />
 {/if}

src/interface/components/SignInToFavoriteModal.svelte

@@ -3,7 +3,6 @@
   import { animate } from "motion";
   import { onMount } from "svelte";
   import { cloudAuth } from "@/seqta/utils/CloudAuth";
-  import CloudLoginForm from "@/interface/components/store/CloudLoginForm.svelte";
 
   let { onClose } = $props<{ onClose: () => void }>();
   let modalElement: HTMLElement;
@@ -23,6 +22,10 @@
       );
     }
   });
+
+  async function handleSignIn() {
+    await cloudAuth.startLogin();
+  }
 </script>
 
 <div
@@ -52,7 +55,16 @@
       Sign in to the Theme Store to save favorites across devices, or create an account to get started.
     </p>
 
-    <CloudLoginForm compact onSuccess={onClose} />
+    <button
+      type="button"
+      onclick={handleSignIn}
+      class="w-full px-4 py-2.5 text-sm font-medium rounded-lg bg-zinc-800 dark:bg-zinc-200 text-white dark:text-zinc-900 hover:bg-zinc-700 dark:hover:bg-zinc-300 transition-colors duration-200"
+    >
+      Sign in with BetterSEQTA Cloud
+    </button>
+    <p class="mt-2 text-xs text-center text-zinc-400 dark:text-zinc-500">
+      Opens accounts.betterseqta.org in a new tab
+    </p>
 
     <div class="flex justify-end mt-4">
       <button

src/interface/components/store/CloudHeader.svelte

@@ -1,11 +1,10 @@
 <script lang="ts">
   import { onMount } from "svelte";
   import { cloudAuth } from "@/seqta/utils/CloudAuth";
-  import CloudLoginForm from "./CloudLoginForm.svelte";
 
-  let { alwaysShowUserName = false } = $props<{
-    /** When true (e.g. narrow extension popup), show display name below sm breakpoint */
+  let { alwaysShowUserName = false, onClick = undefined } = $props<{
     alwaysShowUserName?: boolean;
+    onClick?: () => void;
   }>();
 
   let cloudState = $state(cloudAuth.state);
@@ -42,6 +41,19 @@
     open = false;
   }
 
+  async function handleSignIn() {
+    await cloudAuth.startLogin();
+    open = false;
+  }
+
+  function handleButtonClick() {
+    if (onClick) {
+      onClick();
+    } else {
+      open = !open;
+    }
+  }
+
   function getInitials(): string {
     const u = cloudState.user;
     if (!u) return "?";
@@ -55,35 +67,35 @@
 <div class="relative flex items-center" bind:this={dropdownEl}>
   <button
     type="button"
-    onclick={() => (open = !open)}
-    class="flex items-center gap-2 px-3 py-2 rounded-lg bg-zinc-100/80 dark:bg-zinc-700/80 hover:bg-zinc-200/80 dark:hover:bg-zinc-600/80 transition-colors duration-200 text-base font-medium text-zinc-900 dark:text-white"
+    onclick={handleButtonClick}
+    class="flex items-center gap-2 px-3 py-1.5 text-[0.75rem] rounded-lg shadow-2xl border dark:bg-[#38373D]/50 bg-[#DDDDDD]/50 border-[#DDDDDD]/30 dark:border-[#38373D]/30 dark:text-white transition-colors duration-200"
   >
     {#if cloudState.isLoggedIn}
       {#if cloudState.user?.pfpUrl}
         <img
           src={cloudState.user.pfpUrl}
           alt=""
-          class="w-8 h-8 rounded-full object-cover ring-2 ring-zinc-200 dark:ring-zinc-600"
+          class="w-5 h-5 rounded-full object-cover ring-1 ring-zinc-200 dark:ring-zinc-600"
         />
       {:else}
-        <div class="flex items-center justify-center w-8 h-8 rounded-full bg-zinc-300 dark:bg-zinc-600 text-zinc-700 dark:text-zinc-200 font-semibold text-sm">
+        <div class="flex items-center justify-center w-5 h-5 rounded-full bg-zinc-300 dark:bg-zinc-600 text-zinc-700 dark:text-zinc-200 font-semibold text-[0.6rem]">
           {getInitials()}
         </div>
       {/if}
       <span
         class={alwaysShowUserName
-          ? "inline max-w-[10rem] truncate text-sm"
-          : "hidden max-w-24 truncate sm:inline text-base"}
+          ? "inline max-w-[10rem] truncate text-[0.75rem]"
+          : "hidden max-w-24 truncate sm:inline text-[0.75rem]"}
       >
         {cloudState.user?.displayName || cloudState.user?.username || cloudState.user?.email || "User"}
       </span>
     {:else}
-      <span class="text-xl font-IconFamily" aria-hidden="true">{'\ued53'}</span>
-      <span class="text-base font-medium">Sign in</span>
+      <span class="text-sm font-IconFamily" aria-hidden="true">{'\ued53'}</span>
+      <span class="text-[0.75rem]">Sign in</span>
     {/if}
   </button>
 
-  {#if open}
+  {#if !onClick && open}
     <!-- svelte-ignore a11y_click_events_have_key_events -->
     <!-- svelte-ignore a11y_no_static_element_interactions -->
     <div
@@ -127,11 +139,21 @@
             </button>
           </div>
         {:else}
-          <CloudLoginForm
-            onSuccess={() => {
-              open = false;
-            }}
-          />
+          <div class="flex flex-col gap-3">
+            <p class="text-sm text-zinc-600 dark:text-zinc-400">
+              Sign in to sync favorites across devices.
+            </p>
+            <button
+              type="button"
+              onclick={handleSignIn}
+              class="w-full px-4 py-3 text-base font-medium rounded-lg bg-zinc-800 dark:bg-zinc-200 text-white dark:text-zinc-900 hover:bg-zinc-700 dark:hover:bg-zinc-300 transition-colors duration-200"
+            >
+              Sign in with BetterSEQTA Cloud
+            </button>
+            <p class="text-xs text-center text-zinc-400 dark:text-zinc-500">
+              Opens accounts.betterseqta.org in a new tab
+            </p>
+          </div>
         {/if}
       </div>
     </div>