diff --git a/changelog.md b/changelog.md
index 928601a..b6b064e 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,5 +1,16 @@
 # Changelog
 
+## 2025-12-17 - 1.5.0 - feat(combox)
+Introduce singleton SioCombox attached to document.body with open/close/toggle API and animated show/hide; integrate SioFab to use the singleton and update styles/positioning
+
+- Add SioCombox.createOnBody() and SioCombox.getInstance() singletons
+- Add isOpen state, open(), close(), toggle(), getIsOpen() and emit opened/closed/close events
+- Move combox out of the FAB shadow DOM — attach to body and position fixed bottom-right with z-index and enter/exit transitions
+- Update mobile layout to full-screen sizing and adjust transform origin for phablet
+- Update SioFab to create the singleton on firstUpdated(), listen for close events, and toggle the singleton instead of rendering it inside the FAB
+- Remove previous in-FAB combox container markup/CSS and hasShownOnce logic
+- Minor visual/UX improvements: scale/opacity transitions, pointer-events control, and positioning variables for consistent behavior
+
 ## 2025-12-17 - 1.4.1 - fix(ui)
 handle on-screen keyboard visibility to adjust layout and prevent inputs from being obscured
 
diff --git a/ts_web/00_commitinfo_data.ts b/ts_web/00_commitinfo_data.ts
index b79eb97..3e9e5c1 100644
--- a/ts_web/00_commitinfo_data.ts
+++ b/ts_web/00_commitinfo_data.ts
@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@social.io/catalog',
-  version: '1.4.1',
+  version: '1.5.0',
   description: 'catalog for social.io'
 }
diff --git a/ts_web/elements/sio-combox.ts b/ts_web/elements/sio-combox.ts
index 5e7ba58..d3fb126 100644
--- a/ts_web/elements/sio-combox.ts
+++ b/ts_web/elements/sio-combox.ts
@@ -36,6 +36,27 @@ declare global {
 export class SioCombox extends DeesElement {
   public static demo = () => html` <sio-combox></sio-combox> `;
 
+  // Singleton instance
+  private static instance: SioCombox | null = null;
+
+  /**
+   * Creates and appends a singleton combox to document.body
+   */
+  public static createOnBody(): SioCombox {
+    if (!SioCombox.instance) {
+      SioCombox.instance = new SioCombox();
+      document.body.appendChild(SioCombox.instance);
+    }
+    return SioCombox.instance;
+  }
+
+  /**
+   * Gets the singleton instance if it exists
+   */
+  public static getInstance(): SioCombox | null {
+    return SioCombox.instance;
+  }
+
   @property({ type: Object })
   public accessor referenceObject: HTMLElement;
 
@@ -45,6 +66,9 @@ export class SioCombox extends DeesElement {
   @state()
   private accessor isKeyboardVisible: boolean = false;
 
+  @state()
+  private accessor isOpen: boolean = false;
+
   private keyboardBlurTimeout?: number;
 
   @state()
@@ -174,6 +198,48 @@ export class SioCombox extends DeesElement {
         this.removeAttribute('keyboard-visible');
       }
     }
+    if (changedProperties.has('isOpen')) {
+      if (this.isOpen) {
+        this.classList.add('open');
+        this.dispatchEvent(new CustomEvent('opened', { bubbles: true, composed: true }));
+      } else {
+        this.classList.remove('open');
+        this.dispatchEvent(new CustomEvent('closed', { bubbles: true, composed: true }));
+      }
+    }
+  }
+
+  /**
+   * Opens the combox
+   */
+  public open() {
+    this.isOpen = true;
+  }
+
+  /**
+   * Closes the combox
+   */
+  public close() {
+    this.isOpen = false;
+    this.dispatchEvent(new CustomEvent('close', { bubbles: true, composed: true }));
+  }
+
+  /**
+   * Toggles the combox open/closed state
+   */
+  public toggle() {
+    if (this.isOpen) {
+      this.close();
+    } else {
+      this.open();
+    }
+  }
+
+  /**
+   * Returns whether the combox is currently open
+   */
+  public getIsOpen(): boolean {
+    return this.isOpen;
   }
 
   public static styles = [
@@ -181,6 +247,9 @@ export class SioCombox extends DeesElement {
     css`
       :host {
         display: block;
+        position: fixed;
+        bottom: 100px;
+        right: 20px;
         height: 600px;
         width: 800px;
         background: ${bdTheme('background')};
@@ -189,25 +258,22 @@ export class SioCombox extends DeesElement {
         box-shadow: ${unsafeCSS(shadows.xl)};
         overflow: hidden;
         font-family: ${unsafeCSS(fontFamilies.sans)};
-        position: relative;
         transform-origin: bottom right;
+        z-index: 10001;
+
+        /* Hidden by default */
+        opacity: 0;
+        pointer-events: none;
+        transform: scale(0.95) translateY(10px);
+        transition: opacity 200ms ease, transform 200ms ease;
       }
-      
-      :host(.animate-in) {
-        animation: scaleIn 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
+
+      :host(.open) {
+        opacity: 1;
+        pointer-events: all;
+        transform: scale(1) translateY(0);
       }
-      
-      @keyframes scaleIn {
-        from {
-          opacity: 0;
-          transform: scale(0.9) translateY(10px);
-        }
-        to {
-          opacity: 1;
-          transform: scale(1) translateY(0);
-        }
-      }
-      
+
       :host::before {
         content: '';
         position: absolute;
@@ -243,9 +309,19 @@ export class SioCombox extends DeesElement {
     // Mobile responsive layout - full screen with sliding mechanics
     cssManager.cssForPhablet(css`
       :host {
-        width: 100%;
-        height: 100%;
+        top: 0;
+        left: 0;
+        right: 0;
+        bottom: 0;
+        width: 100vw;
+        height: 100vh;
+        height: 100dvh;
         border-radius: 0;
+        transform-origin: center center;
+      }
+
+      :host(.open) {
+        transform: scale(1) translateY(0);
       }
 
       :host::before {
diff --git a/ts_web/elements/sio-fab.ts b/ts_web/elements/sio-fab.ts
index 3d98e69..049af79 100644
--- a/ts_web/elements/sio-fab.ts
+++ b/ts_web/elements/sio-fab.ts
@@ -32,9 +32,6 @@ export class SioFab extends DeesElement {
   @property({ type: Boolean })
   public accessor showCombox = false;
 
-  @state()
-  private accessor hasShownOnce = false;
-
   @state()
   private accessor shouldPulse = false;
 
@@ -62,7 +59,6 @@ export class SioFab extends DeesElement {
         --fab-gradient-hover-end: #c026d3;
         --fab-shadow-color: rgba(139, 92, 246, 0.25);
         --fab-size: 60px;
-        --fab-combox-offset: calc(var(--fab-size) + ${unsafeCSS(spacing["4"])});
       }
 
       #mainbox {
@@ -201,63 +197,13 @@ export class SioFab extends DeesElement {
       #mainbox .icon.close sio-icon {
         transform: scale(1);
       }
-
-      #comboxContainer {
-        position: absolute;
-        bottom: 0;
-        right: 0;
-        pointer-events: none;
-      }
-
-      #comboxContainer sio-combox {
-        position: absolute;
-        bottom: var(--fab-combox-offset);
-        right: 0;
-        transition: ${unsafeCSS(transitions.all)};
-        will-change: transform;
-        transform: translateY(${unsafeCSS(spacing["5"])});
-        opacity: 0;
-        pointer-events: none;
-      }
-
-      #comboxContainer.show {
-        pointer-events: all;
-      }
-
-      #comboxContainer.show sio-combox {
-        transform: translateY(0px);
-        opacity: 1;
-        pointer-events: all;
-      }
     `,
-    // Mobile responsive styles - smaller FAB and full-screen combox
+    // Mobile responsive styles - smaller FAB
     cssManager.cssForPhablet(css`
       :host {
         --fab-size: 48px;
         bottom: 16px;
         right: 16px;
-        will-change: auto;
-      }
-
-      #comboxContainer {
-        position: fixed;
-        top: 0;
-        left: 0;
-        bottom: auto;
-        right: auto;
-        width: 100vw;
-        height: 100vh;
-        height: 100dvh;
-      }
-
-      #comboxContainer sio-combox {
-        bottom: 0;
-        right: 0;
-        transform: none;
-      }
-
-      #comboxContainer.show sio-combox {
-        transform: none;
       }
     `),
   ];
@@ -276,11 +222,6 @@ export class SioFab extends DeesElement {
           <sio-icon icon="x" size="20"></sio-icon>
         </div>
       </div>
-      <div id="comboxContainer" class="${this.showCombox ? 'show' : ''}">
-        ${this.showCombox || this.hasShownOnce ? html`
-          <sio-combox @close=${() => this.showCombox = false}></sio-combox>
-        ` : ''}
-      </div>
     `;
   }
 
@@ -288,12 +229,12 @@ export class SioFab extends DeesElement {
    * toggles the combox
    */
   public async toggleCombox() {
-    console.log('toggle combox');
-    const wasOpen = this.showCombox;
-    this.showCombox = !this.showCombox;
-    if (this.showCombox) {
-      this.hasShownOnce = true;
-      if (!wasOpen) {
+    const combox = SioCombox.getInstance();
+    if (combox) {
+      const wasOpen = combox.getIsOpen();
+      combox.toggle();
+      this.showCombox = combox.getIsOpen();
+      if (this.showCombox && !wasOpen) {
         this.shouldPulse = true;
       }
     }
@@ -303,6 +244,14 @@ export class SioFab extends DeesElement {
     super.firstUpdated(args);
     const domtools = await this.domtoolsPromise;
 
+    // Create the singleton combox on body
+    const combox = SioCombox.createOnBody();
+
+    // Listen for close events
+    combox.addEventListener('close', () => {
+      this.showCombox = false;
+    });
+
     // Set up keyboard shortcut
     domtools.keyboard
       .on([domtools.keyboard.keyEnum.Ctrl, domtools.keyboard.keyEnum.S])
@@ -322,15 +271,5 @@ export class SioFab extends DeesElement {
         this.classList.remove('combox-open');
       }
     }
-
-    // Set reference object when combox is rendered
-    if ((changedProperties.has('showCombox') || changedProperties.has('hasShownOnce')) &&
-        (this.showCombox || this.hasShownOnce)) {
-      const sioCombox: SioCombox = this.shadowRoot.querySelector('sio-combox');
-      const mainBox: HTMLElement = this.shadowRoot.querySelector('#mainbox');
-      if (sioCombox && mainBox && !sioCombox.referenceObject) {
-        sioCombox.referenceObject = mainBox;
-      }
-    }
   }
 }