Floating layers and status feedback
Gallery Proof Notification Center

Complete the Notification Center in a gallery proofing scenario: includes real content, interactive controls, clear status feedback, and responsive layouts across sizes.
Floating layers and status feedbackNotification CenterHTMLCSSJavaScript
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    <header class="mast"><div><span class="eyebrow">paper / Notification Center / BEGINNER</span><h1>Gallery Proof Notification Center</h1><p class="intro">Complete the Notification Center in a gallery proofing scenario: includes real content, interactive controls, clear status feedback, and responsive layouts across sizes.</p></div><span class="scenario">Gallery Proof</span></header>
    <div class="composition-deck"><div class="deck-bar"><span>CONTROL DECK · 04</span><span>Notification Center</span><span class="deck-lights" aria-hidden="true"><i></i><i></i><i></i></span></div><section class="demo" aria-label="Gallery proof notification center interactive area"><section id="evidenceShell" class="evidence-shell" data-board-mode="scan"><header class="evidence-head"><div><span class="eyebrow">Gallery proof / EVIDENCE BOARD</span><h2>Notification Center monitoring panel</h2><p>Place the main case into an evidence board, using separate observation cards, logs, and mode-switch records to track the current result.</p></div><div class="evidence-tools"><div class="row"><button class="action primary" type="button" data-board-mode="scan">Scan</button><button class="action" type="button" data-board-mode="proof">Verify</button><button class="action" type="button" data-board-mode="handoff">Handoff</button></div><output id="evidenceStatus">Awaiting Sampling</output></div></header><div class="evidence-body"><section class="evidence-stage"><div class="evidence-ribbon"><button type="button" data-evidence-card="0" aria-pressed="true"><span>01</span><strong>Gallery proof inspiration</strong><small>Check whether the status change is visible</small></button><button type="button" data-evidence-card="1" aria-pressed="false"><span>02</span><strong>Gallery Proof Records</strong><small>Confirm keyboard and click entry points are consistent</small></button><button type="button" data-evidence-card="2" aria-pressed="false"><span>03</span><strong>Gallery Proof Collaboration</strong><small>Check whether the layout falls back on narrow screens</small></button><button type="button" data-evidence-card="3" aria-pressed="false"><span>04</span><strong>Gallery proof progress</strong><small>Record current review conclusion</small></button></div><div id="evidenceCoreShell" class="evidence-core-shell"><div class="workflow-compare"><form id="workflowCompareControls" class="compare-controls"><fieldset><legend>Reference Channel</legend><label><input type="radio" name="workflowChannel" value="A" checked>A · Gallery proof open panel</label><label><input type="radio" name="workflowChannel" value="B">B · Gallery proof in progress</label></fieldset><label>Pending workload weight<input id="workflowCompareWeight" type="range" min="10" max="90" value="50"><output id="workflowCompareWeightValue">50 item</output></label><label><input id="workflowCompareFreeze" type="checkbox">Freeze current version</label><button id="workflowCompareCapture" class="action primary" type="button">Sample and Process</button><ol id="workflowCompareShelf" aria-label="Version Sampling Record"></ol></form><section class="compare-stage"><header><span class="eyebrow">Gallery Proof COMPARE</span><h2>Gallery Proof Two-Version Comparison</h2><output id="workflowCompareLive">Version A waiting for sampling</output></header><section id="workflowCore" class="workflow-core compare-core" data-compare-channel="A" style="--compare-split:50%"><!-- 11DZ_CORE_START:overlays-feedback-notification-center --><section class="notification-center-demo"><div class="notification-home"><span class="eyebrow">NOTIFICATION CENTER</span><h2>Gallery Proof Notification Center</h2><button id="notificationOpen" type="button" aria-haspopup="dialog" aria-controls="notificationCenter" data-core-bridge="overlays-feedback-notification-center">Open notifications <span id="notificationBadge">3</span></button></div><dialog id="notificationCenter" aria-labelledby="notificationTitle"><header><div><span class="eyebrow">INBOX</span><h2 id="notificationTitle">All notifications</h2></div><button id="notificationClose" type="button" aria-label="Close notification center">×</button></header><div class="notification-filters" role="group" aria-label="Notification filter"><button type="button" data-notification-filter="all" aria-pressed="true">All</button><button type="button" data-notification-filter="unread" aria-pressed="false">Unread</button></div><div id="notificationList" class="notification-list"><article data-notification data-read="false"><button type="button"><i aria-hidden="true"></i><span><strong>Gallery proof inspiration</strong><small>1 hours ago</small></span><em>Unread</em></button></article><article data-notification data-read="false"><button type="button"><i aria-hidden="true"></i><span><strong>Gallery Proof Records</strong><small>2 hours ago</small></span><em>Unread</em></button></article><article data-notification data-read="false"><button type="button"><i aria-hidden="true"></i><span><strong>Gallery Proof Collaboration</strong><small>3 hours ago</small></span><em>Unread</em></button></article><article data-notification data-read="true"><button type="button"><i aria-hidden="true"></i><span><strong>Gallery proof progress</strong><small>4 hours ago</small></span><em>Read</em></button></article><article data-notification data-read="true"><button type="button"><i aria-hidden="true"></i><span><strong>Gallery Proof Reminder</strong><small>5 hours ago</small></span><em>Read</em></button></article></div><footer><output id="notificationCount">3 unread items</output><button id="notificationReadAll" type="button">Mark All as Read</button></footer></dialog></section><!-- 11DZ_CORE_END --></section></section></div></div></section><aside class="evidence-rail"><label>Canvas Zoom<input id="evidenceZoom" type="range" min="88" max="128" value="100"><output id="evidenceZoomValue">100%</output></label><label>Current sample<select id="evidenceStep"><option value="0">Gallery proof inspiration</option><option value="1">Gallery Proof Records</option><option value="2">Gallery Proof Collaboration</option><option value="3">Gallery proof progress</option></select></label><ul id="evidenceChecklist" class="evidence-checklist"><li>Gallery proof inspiration</li><li>Gallery Proof Records</li><li>Gallery Proof Collaboration</li><li>Gallery proof progress</li></ul><button id="evidenceCapture" class="action primary" type="button">Write evidence</button><ol id="evidenceLog" class="evidence-log"><li>Evidence not yet entered</li></ol></aside></div></section><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
  </main>
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const workflowCompareCore=document.querySelector('#workflowCore');const workflowCompareWeight=document.querySelector('#workflowCompareWeight');const workflowCompareState={channel:'A',weight:50,frozen:false,snapshots:[]};function workflowCompareFingerprint(){const controls=[...workflowCompareCore.querySelectorAll('input,select,textarea')];const outputs=[...workflowCompareCore.querySelectorAll('output,[role="status"],strong')].map(node=>node.textContent.trim()).filter(Boolean);return {controlValues:controls.map(control=>control.type==='checkbox'||control.type==='radio'?control.checked:control.value),summary:outputs.slice(0,4).join(' / '),nodes:workflowCompareCore.querySelectorAll('*').length};}function workflowCompareDrive(){workflowCompareCore.dataset.compareChannel=workflowCompareState.channel;workflowCompareCore.style.setProperty('--compare-split',workflowCompareState.weight+'%');document.querySelector('#workflowCompareWeightValue').textContent=workflowCompareState.weight+' Item';document.querySelector('#workflowCompareLive').textContent=workflowCompareState.channel+' Version · '+workflowCompareState.weight+' Item'+(workflowCompareState.frozen?' · Frozen':'');announce('Gallery proof is being viewed '+workflowCompareState.channel+' Version');}function workflowCompareCapture(source){const bridge=workflowBridgeActivate();const snapshot={...workflowCompareFingerprint(),channel:workflowCompareState.channel,weight:workflowCompareState.weight,source,bridge:bridge.summary};workflowCompareState.snapshots.push(snapshot);const item=document.createElement('li');item.innerHTML='<b>'+snapshot.channel+'</b><span>'+(snapshot.summary||snapshot.bridge)+'</span><small>'+snapshot.weight+' Item · '+snapshot.bridge+'</small>';document.querySelector('#workflowCompareShelf').prepend(item);announce('sampled '+snapshot.channel+' Version and complete processing · '+bridge.summary);}document.querySelectorAll('[name="workflowChannel"]').forEach(input=>input.addEventListener('change',()=>{workflowCompareState.channel=input.value;workflowCompareDrive();}));workflowCompareWeight.addEventListener('input',()=>{workflowCompareState.weight=Number(workflowCompareWeight.value);workflowCompareDrive();});document.querySelector('#workflowCompareFreeze').addEventListener('change',event=>{workflowCompareState.frozen=event.currentTarget.checked;workflowCompareDrive();});document.querySelector('#workflowCompareCapture').addEventListener('click',()=>workflowCompareCapture('Button Sampling'));workflowCompareCore.addEventListener('dblclick',()=>workflowCompareCapture('Main view double-click'));workflowCompareDrive();
workflowBridgeReset();
const evidenceShell=document.querySelector('#evidenceShell');const evidenceStatus=document.querySelector('#evidenceStatus');const evidenceZoom=document.querySelector('#evidenceZoom');const evidenceZoomValue=document.querySelector('#evidenceZoomValue');const evidenceStep=document.querySelector('#evidenceStep');const evidenceChecklistItems=[...document.querySelectorAll('#evidenceChecklist li')];const evidenceCards=[...document.querySelectorAll('[data-evidence-card]')];const evidenceLog=document.querySelector('#evidenceLog');const evidenceModeButtons=[...evidenceShell.querySelectorAll('button[data-board-mode]')];const evidenceNotes=["Gallery proof inspiration","Gallery Proof Records","Gallery Proof Collaboration","Gallery proof progress"];const evidenceCore=document.querySelector('#workflowCore');let evidenceCaptures=0;function evidenceSetCard(index){evidenceCards.forEach((card,cardIndex)=>{const active=cardIndex===index;card.setAttribute('aria-pressed',String(active));});evidenceChecklistItems.forEach((item,itemIndex)=>{item.classList.toggle('is-active',itemIndex===index);item.classList.toggle('is-done',itemIndex<evidenceCaptures);});}function evidenceRender(reason){const version=evidenceCore?.dataset.workflowVersion||'0';const zoom=Number(evidenceZoom.value);const active=Math.min(evidenceNotes.length-1,Number(evidenceStep.value)||0);evidenceShell.style.setProperty('--evidence-zoom',String(zoom));evidenceZoomValue.textContent=zoom+'%';evidenceSetCard(active);evidenceStatus.textContent=reason+' · Core Version '+version;}evidenceModeButtons.forEach(button=>button.addEventListener('click',()=>{evidenceModeButtons.forEach(item=>item.classList.toggle('primary',item===button));evidenceShell.dataset.boardMode=button.dataset.boardMode;evidenceRender('Switched to'+button.textContent);announce('Evidence mode:'+button.textContent);}));evidenceCards.forEach((card,index)=>card.addEventListener('click',()=>{evidenceStep.value=String(index);evidenceRender('Switched to observation card');announce('Observation card:'+evidenceNotes[index]);}));evidenceZoom.addEventListener('input',()=>{evidenceRender('Canvas zoom updated');announce('Observe scaling '+evidenceZoom.value+'%');});evidenceStep.addEventListener('change',()=>{const index=Number(evidenceStep.value)||0;evidenceRender('Sampling switched');announce('Current sample:'+evidenceNotes[index]);});document.querySelector('#evidenceCapture').addEventListener('click',()=>{const index=Math.min(evidenceNotes.length-1,Number(evidenceStep.value)||0);const note=evidenceNotes[index];const version=evidenceCore?.dataset.workflowVersion||'0';evidenceCaptures+=1;const item=document.createElement('li');item.textContent='Evidence '+evidenceCaptures+' · '+note+' · Core Version '+version;const empty=evidenceLog.querySelector('li')?.textContent==='Evidence not yet entered';if(empty)evidenceLog.replaceChildren(item);else evidenceLog.prepend(item);while(evidenceLog.children.length>6)evidenceLog.lastElementChild.remove();evidenceRender('Evidence written '+evidenceCaptures);announce('Evidence written '+evidenceCaptures+' · '+note);});evidenceCore?.addEventListener('focusin',()=>evidenceRender('Main Case Gets Focus'));evidenceCore?.addEventListener('click',()=>evidenceRender('Primary example interaction'));evidenceRender('Awaiting Sampling');
  </script>
</body>
</html>