Audio terminal viewport information panel
Complete the viewport information panel for an audio terminal bay scenario: include realistic content, interactive controls, clear status feedback, and responsive layouts across sizes.
With JavaScript enabled, you can edit, run, and save this example. The fixed source is as follows:
<!doctype html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Audio terminal viewport information panel</title>
<style>
:root { --ink:#18314f; --paper:#f7f8f2; --accent:#ff6b5e; --secondary:#71c9b5; --line:color-mix(in srgb, var(--ink) 18%, transparent); --shadow:0 24px 60px color-mix(in srgb, var(--ink) 16%, transparent); color-scheme:light; }
* { box-sizing:border-box; }
html { min-width:320px; background:var(--paper); }
body { min-height:100vh; margin:0; overflow-x:hidden; color:var(--ink); font-family:Didot,"Songti SC",serif; background:linear-gradient(30deg,transparent 48%,color-mix(in srgb,var(--accent) 9%,transparent) 49% 51%,transparent 52%),var(--paper);background-size:52px 90px; }
button,input,select,textarea { color:inherit; font:inherit; }
button,[role="button"],input,select,textarea { accent-color:var(--accent); }
button { cursor:pointer; }
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible { outline:3px solid var(--accent); outline-offset:3px; }
[hidden] { display:none !important; }
@media (max-width:700px) { .mast h1 { line-height:1.08 !important; letter-spacing:-.035em !important; overflow-wrap:anywhere; } }
@media (prefers-reduced-motion:reduce) { *,*::before,*::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; } }
.page{width:min(1040px,calc(100% - 36px));margin:auto;padding:64px 0}.mast{display:grid;justify-items:center;text-align:center;border-block:3px double var(--accent);padding:26px;gap:20px;margin-bottom:32px}.mast h1{font-family:Didot,"Songti SC",serif;font-weight:700;font-size:clamp(38px,8vw,86px);letter-spacing:.035em;margin:0;line-height:1}.eyebrow{display:block;color:var(--accent);font:800 11px/1 ui-monospace,monospace;letter-spacing:.3em}.intro{max-width:600px;margin-inline:auto;line-height:1.8}.scenario{padding:8px 26px;border-inline:1px solid var(--accent);letter-spacing:.16em}.demo{border:4px double var(--accent);border-radius:0;clip-path:polygon(24px 0,calc(100% - 24px) 0,100% 24px,100% calc(100% - 24px),calc(100% - 24px) 100%,24px 100%,0 calc(100% - 24px),0 24px);position:relative;min-height:440px;overflow:hidden;padding:clamp(28px,5vw,60px);background:var(--paper)}@media(max-width:700px){.page{width:calc(100% - 20px);padding:24px 0}.mast{padding:18px}.demo{padding:18px}}
.panel{padding:22px;border:1px solid var(--line);background:color-mix(in srgb,#fff 58%,transparent)}.stack{display:grid;gap:15px}.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.action{min-height:44px;padding:10px 17px;border:1px solid var(--ink);border-radius:999px;background:transparent}.action.primary,.action.is-active{color:var(--paper);background:var(--accent)}.muted{opacity:.68}.status{min-height:24px;margin-top:15px;color:var(--accent);font-weight:800}.metric{font-size:clamp(30px,6vw,58px);font-weight:900}.meter{height:9px;overflow:hidden;border-radius:999px;background:color-mix(in srgb,var(--ink) 12%,transparent)}.meter>i{display:block;height:100%;background:var(--accent)}.chip{padding:6px 9px;border:1px solid var(--line);border-radius:999px;font-size:12px}
.composition-studio{display:grid;gap:14px}.studio-ruler{display:flex;justify-content:space-between;padding:0 4px;color:color-mix(in srgb,var(--ink) 55%,transparent);font:700 11px/1 ui-monospace,monospace;letter-spacing:.14em}.studio-ruler::before{content:"01 / WORKING PROTOTYPE"}.studio-ruler::after{content:"360 · 768 · 1440"}.composition-studio .demo::after{content:"";position:absolute;right:18px;bottom:18px;width:24px;height:24px;border-right:2px solid var(--accent);border-bottom:2px solid var(--accent);pointer-events:none}
.viewport-lab{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(180px,.65fr);gap:16px}.viewport-lab>header{grid-column:1/-1;display:grid;grid-template-columns:1fr auto;gap:8px 18px;align-items:end;padding-bottom:16px;border-bottom:5px solid var(--ink)}.viewport-lab h2{margin:.2em 0}.viewport-lab header output{grid-column:2;grid-row:1/3;font:900 clamp(32px,7vw,66px)/1 ui-monospace,monospace}.viewport-board{position:relative;min-height:300px;padding:28px;border:1px solid var(--line);background:repeating-linear-gradient(90deg,transparent 0 39px,color-mix(in srgb,var(--line) 35%,transparent) 40px)}.viewport-board>i{position:absolute;background:var(--accent);transition:width .2s,height .2s}.viewport-board>i:first-child{left:0;top:0;height:8px}.viewport-board>i:nth-child(2){right:0;top:0;width:8px}.viewport-board dl{display:grid;grid-template-columns:1fr 1fr;gap:12px}.viewport-board dl div{padding:16px;background:var(--paper);border:1px solid var(--line)}.viewport-board dt{font-size:12px}.viewport-board dd{margin:7px 0 0;font-weight:900}.viewport-lab>aside{padding:20px;border:1px solid var(--line)}.viewport-lab ol{display:grid;gap:8px;padding-left:22px}@media(max-width:680px){.viewport-lab{grid-template-columns:1fr}.viewport-lab>header{grid-template-columns:1fr}.viewport-lab header output{grid-area:auto}.viewport-board dl{grid-template-columns:1fr}}.workflow-guide{display:grid;grid-template-columns:190px minmax(0,1fr);grid-template-areas:"rail core" "rail evidence";gap:14px 18px}.guide-rail{grid-area:rail;display:grid;align-content:start;gap:15px;padding:18px;border-right:1px solid var(--line)}.guide-rail ol{display:grid;gap:8px;padding:0;margin:0;list-style:none}.guide-rail li{display:grid;grid-template-columns:30px 1fr;gap:8px;align-items:center;padding:9px;opacity:.5}.guide-rail li[aria-current="step"]{opacity:1;color:var(--paper);background:var(--ink)}.guide-rail li.is-complete{opacity:1;color:var(--accent)}.guide-actions{display:grid;grid-template-columns:1fr 1fr;gap:7px}.guide-actions .action{padding-inline:8px}#workflowGuideProgress{height:6px;background:var(--line)}#workflowGuideProgress i{display:block;width:0;height:100%;background:var(--accent)}.guide-core{grid-area:core;min-width:0;padding:16px;border:1px solid var(--line)}.guide-core>p{margin:0 0 14px;padding:10px;border-left:4px solid var(--accent);background:color-mix(in srgb,var(--secondary) 12%,transparent)}.guide-core[data-guide-step="1"]{border-radius:28px}.guide-core[data-guide-step="2"]{box-shadow:inset 0 0 0 4px color-mix(in srgb,var(--accent) 35%,transparent)}.guide-evidence{grid-area:evidence;display:grid;grid-template-columns:1fr 1fr auto;gap:12px;align-items:start}.guide-evidence details,.guide-evidence form{padding:12px;border:1px solid var(--line)}.guide-evidence label{display:grid;gap:7px}.guide-evidence textarea{width:100%;padding:9px;border:1px solid var(--line);background:var(--paper)}@media(max-width:900px){.workflow-guide{grid-template-columns:1fr;grid-template-areas:"core" "rail" "evidence"}.guide-rail{border-right:0;border-bottom:1px solid var(--line)}.guide-rail ol{grid-template-columns:repeat(3,1fr)}.guide-evidence{grid-template-columns:1fr}}
</style>
</head>
<body data-aesthetic="art-deco" data-composition="studio">
<main class="page">
<header class="mast"><div><span class="eyebrow">art-deco / viewport info panel / BEGINNER</span><h1>Audio terminal viewport information panel</h1><p class="intro">Complete the viewport information panel for an audio terminal bay scenario: include realistic content, interactive controls, clear status feedback, and responsive layouts across sizes.</p></div><span class="scenario">Audio terminal position</span></header>
<div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="Audio terminal position viewport info panel interaction area"><div class="workflow-guide"><nav class="guide-rail" aria-label="Audio Terminal Bay Guide"><span class="eyebrow">Audio Terminal Bay GUIDE</span><ol><li data-workflow-guide-step="0" aria-current="step"><b>1</b><span>Audio terminal port permission check</span></li><li data-workflow-guide-step="1"><b>2</b><span>Audio terminal capability log</span></li><li data-workflow-guide-step="2"><b>3</b><span>Audio terminal bay local storage</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="Audio Terminal Bay 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 operations related to the “audio terminal bay permission check” in the main example.</p><!-- 11DZ_CORE_START:browser-media-device-viewport-inspector --><div class="viewport-lab"><header><span class="eyebrow">VIEWPORT RULER</span><h2>Audio terminal viewport measuring station</h2><output id="viewportReading">—</output><button id="viewportCapture" class="action primary" type="button" data-core-bridge="browser-media-device-viewport-inspector">Record current size</button></header><section class="viewport-board" aria-label="Viewport Size Diagram"><i id="viewportWidthBar"></i><i id="viewportHeightBar"></i><dl><div><dt>Content Area</dt><dd id="viewportInner">—</dd></div><div><dt>Available screen area</dt><dd id="viewportScreen">—</dd></div><div><dt>Pixel density</dt><dd id="viewportDpr">—</dd></div><div><dt>Screen Orientation</dt><dd id="viewportOrientation">—</dd></div></dl></section><aside><h3>Size Snapshot</h3><ol id="viewportHistory"><li>Record the comparison after resizing the window</li></ol></aside></div><!-- 11DZ_CORE_END --></section><aside class="guide-evidence"><details id="workflowGuideDetails"><summary>View acceptance requirements</summary><ul><li>The audio terminal bay permission check requires one visible state change</li><li>Audio Terminal Bay capability logging requires one visible state change</li><li>Audio terminal position local save requires a single 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>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:browser-media-device-viewport-inspector */
const viewportHistory=[];const viewportReading=document.querySelector('#viewportReading');function measureViewport(){const width=innerWidth;const height=innerHeight;const orientation=width>=height?'horizontal':'Portrait';viewportReading.textContent=width+' × '+height;document.querySelector('#viewportInner').textContent=document.documentElement.clientWidth+' × '+document.documentElement.clientHeight;document.querySelector('#viewportScreen').textContent=screen.availWidth+' × '+screen.availHeight;document.querySelector('#viewportDpr').textContent=(devicePixelRatio||1).toFixed(2)+' dppx';document.querySelector('#viewportOrientation').textContent=orientation;document.querySelector('#viewportWidthBar').style.width=Math.min(100,width/16)+'%';document.querySelector('#viewportHeightBar').style.height=Math.min(100,height/10)+'%';}function captureViewport(){viewportHistory.unshift({width:innerWidth,height:innerHeight,dpr:devicePixelRatio||1,at:new Date()});viewportHistory.splice(5);document.querySelector('#viewportHistory').replaceChildren(...viewportHistory.map(entry=>{const item=document.createElement('li');item.textContent=entry.width+' × '+entry.height+' · '+entry.dpr.toFixed(1)+'x';return item;}));announce('Recorded # '+viewportHistory.length+' viewport snapshots');}addEventListener('resize',measureViewport,{passive:true});document.querySelector('#viewportCapture').addEventListener('click',captureViewport);measureViewport();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"browser-media-device-viewport-inspector","selector":"[data-core-bridge=\"browser-media-device-viewport-inspector\"]","mode":"click","key":"Enter"};const workflowBridgeCore=document.querySelector('#workflowCore');const workflowBridgeControl=workflowBridgeCore.querySelector(workflowBridgeSpec.selector);if(!workflowBridgeControl)throw new Error('Missing core bridge: '+workflowBridgeSpec.name);const workflowBridgeControlledId=workflowBridgeControl.getAttribute('aria-controls');const workflowBridgeControlled=workflowBridgeControlledId?document.getElementById(workflowBridgeControlledId):null;workflowBridgeCore.dataset.workflowBridge=workflowBridgeSpec.name;workflowBridgeCore.dataset.workflowVersion='0';function workflowBridgeSerialize(){const visualNode=workflowBridgeCore.firstElementChild||workflowBridgeCore;const visual=getComputedStyle(visualNode);const outputs=[...workflowBridgeCore.querySelectorAll('output,[role="status"],[aria-live],meter,progress')].map(node=>node.textContent.trim()+'|'+node.getAttribute('aria-valuenow')+'|'+node.getAttribute('value'));const canvas=[...workflowBridgeCore.querySelectorAll('canvas')].map(node=>{try{return node.toDataURL().slice(-160);}catch{return 'canvas-unavailable';}});return JSON.stringify({html:workflowBridgeCore.innerHTML,status:statusOutput.textContent,outputs,canvas,visual:[visual.display,visual.visibility,visual.opacity,visual.transform,visual.filter,visual.backgroundColor,visual.width,visual.height],scroll:workflowBridgeSpec.mode==='scroll'?workflowBridgeControl.scrollTop:null});}let workflowBridgeLastEffect=workflowBridgeSerialize();function workflowBridgeSummary(){const label=(workflowBridgeControl.getAttribute('aria-label')||workflowBridgeControl.textContent||workflowBridgeControl.value||workflowBridgeSpec.name).trim().replace(/\s+/g,' ').slice(0,72);return label+' · Core Version '+workflowBridgeCore.dataset.workflowVersion;}function workflowBridgeCommit(){const effect=workflowBridgeSerialize();if(effect===workflowBridgeLastEffect)return {changed:false,summary:workflowBridgeSummary()};workflowBridgeLastEffect=effect;workflowBridgeCore.dataset.workflowVersion=String(Number(workflowBridgeCore.dataset.workflowVersion||0)+1);return {changed:true,summary:workflowBridgeSummary()};}function workflowBridgeScheduleCommit(){queueMicrotask(workflowBridgeCommit);setTimeout(workflowBridgeCommit,0);}workflowBridgeControl.addEventListener("click",workflowBridgeScheduleCommit);const workflowBridgeStateTargets=new Set(workflowBridgeCore.querySelectorAll('dialog'));if(workflowBridgeControlled&&workflowBridgeCore.contains(workflowBridgeControlled))workflowBridgeStateTargets.add(workflowBridgeControlled);workflowBridgeStateTargets.forEach(target=>['close','cancel','toggle'].forEach(eventName=>target.addEventListener(eventName,workflowBridgeScheduleCommit)));function workflowBridgeActivate(){workflowBridgeControl.focus();workflowBridgeControl.click();const result=workflowBridgeCommit();setTimeout(workflowBridgeCommit,0);return result;}function workflowBridgeReset(){workflowBridgeCore.dataset.workflowVersion='0';workflowBridgeLastEffect=workflowBridgeSerialize();}
const workflowGuideCore=document.querySelector('#workflowCore');const workflowGuideStages=["Audio terminal port permission check","Audio terminal capability log","Audio terminal bay local storage"];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?'Recording capability':'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('Audio terminal 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>
</body>
</html>