Creative Visual Effects

Cloud Lake Hall Spotlight Stage

Complete a spotlight stage for a Cloud Lake Hall scenario: includes real content, actionable controls, clear state feedback, and responsive layouts across sizes.

Creative Visual EffectsSpotlight StageHTMLCanvasJavaScript
With JavaScript enabled, you can edit, run, and save this example. The fixed source is as follows:
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  <title>Cloud Lake Hall Spotlight Stage</title>
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<body data-aesthetic="minimal" data-composition="studio">
  <main class="page">
    <header class="mast"><div><span class="eyebrow">minimal / Spotlight Stage / ADVANCED</span><h1>Cloud Lake Hall Spotlight Stage</h1><p class="intro">Complete a spotlight stage for a Cloud Lake Hall scenario: includes real content, actionable controls, clear state feedback, and responsive layouts across sizes.</p></div><span class="scenario">Cloud Lake Hall</span></header>
    <div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="Cloud Lake Hall Spotlight Stage interactive area"><div class="workflow-guide"><nav class="guide-rail" aria-label="Cloud Lake Hall guidance"><span class="eyebrow">Cloud Lake Hall GUIDE</span><ol><li data-workflow-guide-step="0" aria-current="step"><b>1</b><span>Cloud Lake Hall Base Layer</span></li><li data-workflow-guide-step="1"><b>2</b><span>Dynamic Layers in Cloud Lake Hall</span></li><li data-workflow-guide-step="2"><b>3</b><span>Cloud Lake Hall display layers</span></li></ol><div class="guide-actions"><button id="workflowGuideBack" class="action" type="button" disabled>Previous</button><button id="workflowGuideNext" class="action primary" type="button">Complete this step</button></div><div id="workflowGuideProgress" role="progressbar" aria-label="Cloud Lake Hall Completion" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i></i></div></nav><section id="workflowCore" class="workflow-core guide-core" data-guide-step="0" aria-describedby="workflowGuideInstruction"><p id="workflowGuideInstruction">Please complete the tasks related to “Cloud Lake Hall Base Layer” in the main example.</p><!-- 11DZ_CORE_START:creative-effects-spotlight-stage --><div class="spotlight-lab"><section id="spotlightStage" class="spotlight-stage" tabindex="0" aria-label="Cloud Lake Hall Spotlight Stage; move the pointer or use the arrow keys to control the light source" aria-describedby="spotlightHelp"><div class="spotlight-copy"><span>Cloud Lake Hall / LIVE</span><h2>Move attention to the place that truly matters</h2><p id="spotlightHelp">Move the pointer, touch the stage, or use the arrow keys to control the spotlight.</p></div><div class="spotlight-cards" aria-hidden="true"><i></i><i></i><i></i></div></section><aside class="spotlight-controls panel"><span class="eyebrow">SPOTLIGHT STAGE</span><h2>Spotlight Stage</h2><label>Aperture size <input id="spotlightSize" type="range" min="90" max="320" value="190" data-core-bridge="creative-effects-spotlight-stage"><output id="spotlightSizeValue">190px</output></label><label>Ambient brightness <input id="spotlightAmbient" type="range" min="4" max="34" value="12"><output id="spotlightAmbientValue">12%</output></label><button id="spotlightCenter" class="action" type="button">Back to center</button></aside></div><!-- 11DZ_CORE_END --></section><aside class="guide-evidence"><details id="workflowGuideDetails"><summary>View acceptance requirements</summary><ul><li>The base layer of the Cloud Lake Hall needs a visible state change</li><li>The dynamic layering of the Cloud Lake Hall needs a visible state change</li><li>The layering in the Cloud Lake Hall display needs a visible state change</li></ul></details><form id="workflowGuideEvidenceForm"><label>This step evidence<textarea id="workflowGuideEvidence" rows="3" placeholder="Record the observed state"></textarea></label><input class="action" type="submit" value="Save evidence"></form><output id="workflowGuideSummary">0 / 3 Steps Complete</output></aside></div><p id="status" class="status" role="status" aria-live="polite"></p></section></div>
  </main>
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    'use strict';
    const statusOutput = document.querySelector('#status');
    const announce = message => { statusOutput.textContent = message; };
    /* 11DZ_CORE_SCRIPT_START:creative-effects-spotlight-stage */
const spotlightStage=document.querySelector('#spotlightStage');const spotlightSize=document.querySelector('#spotlightSize');const spotlightAmbient=document.querySelector('#spotlightAmbient');let spotlightPoint={x:50,y:50};function setSpotlight(x,y){spotlightPoint.x=Math.max(0,Math.min(100,x));spotlightPoint.y=Math.max(0,Math.min(100,y));spotlightStage.style.setProperty('--spot-x',spotlightPoint.x+'%');spotlightStage.style.setProperty('--spot-y',spotlightPoint.y+'%');}function pointerSpotlight(event){const rect=spotlightStage.getBoundingClientRect();setSpotlight((event.clientX-rect.left)/rect.width*100,(event.clientY-rect.top)/rect.height*100);}spotlightStage.addEventListener('pointermove',pointerSpotlight);spotlightStage.addEventListener('pointerdown',pointerSpotlight);spotlightStage.addEventListener('keydown',event=>{if(!['ArrowLeft','ArrowRight','ArrowUp','ArrowDown'].includes(event.key))return;event.preventDefault();setSpotlight(spotlightPoint.x+(event.key==='ArrowRight'?4:event.key==='ArrowLeft'?-4:0),spotlightPoint.y+(event.key==='ArrowDown'?4:event.key==='ArrowUp'?-4:0));announce('Spotlight position '+Math.round(spotlightPoint.x)+'%,'+Math.round(spotlightPoint.y)+'%');});spotlightSize.addEventListener('input',()=>{spotlightStage.style.setProperty('--spot-size',spotlightSize.value+'px');document.querySelector('#spotlightSizeValue').textContent=spotlightSize.value+'px';announce('Aperture size '+spotlightSize.value+' pixels');});spotlightAmbient.addEventListener('input',()=>{spotlightStage.style.setProperty('--ambient',Number(spotlightAmbient.value)/100);document.querySelector('#spotlightAmbientValue').textContent=spotlightAmbient.value+'%';announce('Ambient brightness '+spotlightAmbient.value+'%');});document.querySelector('#spotlightCenter').addEventListener('click',()=>{setSpotlight(50,50);spotlightStage.focus();announce('The spotlight has returned to center stage');});
/* 11DZ_CORE_SCRIPT_END */
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const workflowGuideCore=document.querySelector('#workflowCore');const workflowGuideStages=["Cloud Lake Hall Base Layer","Dynamic Layers in Cloud Lake Hall","Cloud Lake Hall display layers"];const workflowGuideState={step:0,completed:new Set(),evidence:new Map(),consumedVersion:0};function workflowGuideDrive(){const step=workflowGuideState.step;workflowGuideCore.dataset.guideStep=String(step);document.querySelector('#workflowGuideInstruction').textContent='Please complete the main example ‘'+workflowGuideStages[step]+'Related actions.”';document.querySelectorAll('[data-workflow-guide-step]').forEach((item,index)=>{item.classList.toggle('is-complete',workflowGuideState.completed.has(index));if(index===step)item.setAttribute('aria-current','step');else item.removeAttribute('aria-current');});document.querySelector('#workflowGuideBack').disabled=step===0;document.querySelector('#workflowGuideNext').textContent=step===workflowGuideStages.length-1?'Application Effect':'Complete this step';const percent=Math.round(workflowGuideState.completed.size/workflowGuideStages.length*100);const progress=document.querySelector('#workflowGuideProgress');progress.setAttribute('aria-valuenow',String(percent));progress.querySelector('i').style.width=percent+'%';document.querySelector('#workflowGuideSummary').textContent=workflowGuideState.completed.size+' / '+workflowGuideStages.length+' Step complete · '+workflowBridgeSummary();announce('Cloud Lake Hall current step:'+workflowGuideStages[step]);}function workflowGuideAdvance(direction){if(direction>0){const bridge=workflowBridgeActivate();const version=Number(workflowGuideCore.dataset.workflowVersion||0);if(version<=workflowGuideState.consumedVersion){announce('Please complete the visible state change in the main example first');return;}workflowGuideState.consumedVersion=version;workflowGuideState.completed.add(workflowGuideState.step);announce('Main case changes recorded · '+bridge.summary);}workflowGuideState.step=Math.max(0,Math.min(workflowGuideStages.length-1,workflowGuideState.step+direction));workflowGuideDrive();}document.querySelector('#workflowGuideBack').addEventListener('click',()=>workflowGuideAdvance(-1));document.querySelector('#workflowGuideNext').addEventListener('click',()=>workflowGuideAdvance(1));document.querySelector('#workflowGuideEvidenceForm').addEventListener('submit',event=>{event.preventDefault();const version=Number(workflowGuideCore.dataset.workflowVersion||0);if(version<=workflowGuideState.consumedVersion){announce('Evidence not saved: the main example has no new changes yet');return;}const text=document.querySelector('#workflowGuideEvidence').value.trim();workflowGuideState.evidence.set(workflowGuideState.step,text||'Visible status check completed');workflowGuideState.completed.add(workflowGuideState.step);workflowGuideState.consumedVersion=version;workflowGuideDrive();announce('Evidence for this step has been saved · '+workflowBridgeSummary());});document.querySelector('#workflowGuideDetails').addEventListener('toggle',event=>announce(event.currentTarget.open?'Acceptance requirements expanded':'Acceptance requirements collapsed'));workflowGuideDrive();
workflowBridgeReset();
  </script>
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