observador de consulta de mídia para gravador de áudio
Complete o observador de media query no cenário do gravador de áudio: inclua conteúdo real, controles acionáveis, feedback de status claro e um layout responsivo em diferentes tamanhos.
É possível editar, executar e salvar este exemplo após ativar JavaScript. O código-fonte fixo é o seguinte:
<!doctype html>
<html lang="pt-BR" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>observador de consulta de mídia para gravador de áudio</title>
<style>
:root { --ink:#24213a; --paper:#f6f1e8; --accent:#e6a23c; --secondary:#a8a1d8; --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:"DIN Alternate","Arial Narrow",sans-serif; background:repeating-linear-gradient(135deg,color-mix(in srgb,var(--ink) 5%,transparent) 0 1px,transparent 1px 18px),var(--paper); }
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; } }
.mast{display:flex;justify-content:space-between;border-bottom:6px solid var(--ink);padding-bottom:18px;gap:20px;align-items:flex-end;margin:0 0 22px}.page{width:min(1240px,calc(100% - 28px));margin:auto;padding:34px 0 70px}.scenario{padding:8px 12px;border:2px solid var(--ink);font:900 12px/1 ui-monospace,monospace}.mast h1{font-family:"DIN Condensed","Arial Narrow",sans-serif;font-weight:900;text-transform:uppercase;font-size:clamp(44px,10vw,104px);letter-spacing:-.02em;max-width:1000px;margin:0;line-height:.82}.intro{max-width:720px;font-family:"Arial Narrow",sans-serif;line-height:1.5}.eyebrow{display:inline-block;padding:6px 9px;color:var(--paper);background:var(--accent);font:900 10px/1 ui-monospace,monospace;letter-spacing:.12em}.demo{border-radius:3px;box-shadow:10px 10px 0 var(--accent);position:relative;min-height:400px;overflow:hidden;padding:32px;background:var(--paper)}@media(max-width:700px){.mast{display:grid;grid-template-columns:1fr}.page{width:calc(100% - 16px);padding-top:16px}.demo{padding:14px}}
.stack{display:flex;flex-direction:column;gap:18px}.panel{padding:28px;border-left:7px solid var(--accent);background:color-mix(in srgb,var(--secondary) 12%,var(--paper))}.action{min-height:46px;padding:11px 18px;border:0;border-bottom:3px solid var(--ink);background:transparent;font-weight:900}.action.primary,.action.is-active{color:var(--paper);background:var(--ink)}.row{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px}.metric{font:900 clamp(32px,7vw,64px)/1 ui-monospace,monospace}.status{min-height:22px;padding-top:12px;border-top:1px dashed var(--line)}.muted{color:color-mix(in srgb,var(--ink) 62%,transparent)}.chip{display:inline-block;padding:5px 8px;background:var(--secondary)}.meter{height:12px;border:1px solid var(--ink)}.meter>i{display:block;height:100%;background:var(--ink)}
.composition-gallery{margin:0;padding:clamp(8px,2vw,18px);border:1px solid var(--ink);background:color-mix(in srgb,var(--paper) 78%,transparent)}.gallery-caption{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;padding:15px 4px 2px;font-size:12px}.gallery-caption::before,.gallery-caption::after{content:"";height:1px;background:var(--line)}.gallery-caption strong{font:800 11px/1.2 ui-monospace,monospace;letter-spacing:.16em;text-transform:uppercase}.composition-gallery .demo{box-shadow:none}.composition-gallery .demo::before{content:"";position:absolute;inset:10px;border:1px dashed color-mix(in srgb,var(--accent) 36%,transparent);pointer-events:none}
.query-observatory{display:grid;grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr);gap:18px}.query-observatory>header{grid-column:1/-1;padding:18px;border-left:10px solid var(--accent)}.query-observatory h2{margin:.25em 0}.query-observatory fieldset{display:grid;gap:7px;padding:18px;border:1px solid var(--line)}.query-observatory fieldset label{display:grid;grid-template-columns:auto auto 1fr 14px;gap:9px;align-items:center;padding:11px;border-bottom:1px dotted var(--line)}.query-observatory code{overflow:hidden;text-overflow:ellipsis;font-size:11px}.query-observatory label i{width:12px;aspect-ratio:1;border-radius:50%;background:#8f8f8f}.query-observatory label.is-match i{background:#238a5b;box-shadow:0 0 0 4px #238a5b22}.query-preview{display:grid;grid-template-columns:1fr auto;gap:14px;padding:22px;color:var(--paper);background:var(--ink)}#queryShape{grid-column:1/-1;min-height:130px;border:2px dashed currentColor;border-radius:clamp(8px,4vw,40px);background:linear-gradient(120deg,var(--accent),transparent)}#queryMatches{grid-column:1/-1;display:flex;flex-wrap:wrap;gap:7px;padding:0;list-style:none}#queryMatches li{padding:6px 9px;border:1px solid currentColor}@media(max-width:680px){.query-observatory{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="industrial" data-composition="gallery-frame">
<main class="page">
<header class="mast"><div><span class="eyebrow">industrial / observador de consultas de mídia / BEGINNER</span><h1>observador de consulta de mídia para gravador de áudio</h1><p class="intro">Complete o observador de media query no cenário do gravador de áudio: inclua conteúdo real, controles acionáveis, feedback de status claro e um layout responsivo em diferentes tamanhos.</p></div><span class="scenario">Gravador de áudio</span></header>
<figure class="composition-gallery"><section class="demo" aria-label="Área interativa do observador de consulta de mídia do gravador de áudio"><div class="workflow-guide"><nav class="guide-rail" aria-label="Guia do gravador de áudio"><span class="eyebrow">gravador de áudio GUIDE</span><ol><li data-workflow-guide-step="0" aria-current="step"><b>1</b><span>Verificação de permissões do gravador de áudio</span></li><li data-workflow-guide-step="1"><b>2</b><span>Registro de capacidade do gravador de áudio</span></li><li data-workflow-guide-step="2"><b>3</b><span>Salvamento local do gravador de áudio</span></li></ol><div class="guide-actions"><button id="workflowGuideBack" class="action" type="button" disabled>Etapa anterior</button><button id="workflowGuideNext" class="action primary" type="button">Concluir esta etapa</button></div><div id="workflowGuideProgress" role="progressbar" aria-label="Progresso do gravador de áudio" 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">Conclua as ações relacionadas à verificação de permissões do gravador de áudio no caso principal.</p><!-- 11DZ_CORE_START:browser-media-device-media-query --><div class="query-observatory"><header><span class="eyebrow">MEDIA QUERY MATRIX</span><h2>Painel de consulta de ambiente do gravador de áudio</h2><p>Marque as condições que deseja observar; as alterações no navegador atualizarão imediatamente as luzes indicadoras.</p></header><fieldset id="queryFilters"><legend>Condições de observação</legend><label><input type="checkbox" value="0" checked data-core-bridge="browser-media-device-media-query"><span>Tela estreita</span><code>(max-width: 600px)</code><i aria-hidden="true"></i></label><label><input type="checkbox" value="1" checked><span>vertical</span><code>(orientation: portrait)</code><i aria-hidden="true"></i></label><label><input type="checkbox" value="2" checked><span>Reduzir animações</span><code>(prefers-reduced-motion: reduce)</code><i aria-hidden="true"></i></label><label><input type="checkbox" value="3" checked><span>alto contraste</span><code>(prefers-contrast: more)</code><i aria-hidden="true"></i></label></fieldset><section class="query-preview"><div id="queryShape" aria-hidden="true"></div><output id="querySummary" role="status">Aguardando cálculo</output><ul id="queryMatches"></ul><button id="queryReset" class="action" type="button">Observar tudo</button></section></div><!-- 11DZ_CORE_END --></section><aside class="guide-evidence"><details id="workflowGuideDetails"><summary>Ver requisitos de aceitação</summary><ul><li>A verificação de permissão do gravador de áudio requer uma mudança de estado visível</li><li>O registro de capacidades do gravador de áudio requer uma mudança de estado visível</li><li>O salvamento local do gravador de áudio requer uma mudança de estado visível uma vez</li></ul></details><form id="workflowGuideEvidenceForm"><label>Evidência desta etapa<textarea id="workflowGuideEvidence" rows="3" placeholder="Registrar o estado observado"></textarea></label><input class="action" type="submit" value="Salvar evidência"></form><output id="workflowGuideSummary">0 / 3 passos concluídos</output></aside></div><p id="status" class="status" role="status" aria-live="polite"></p></section><figcaption class="gallery-caption"><strong>Gravador de áudio / GALLERY 03</strong></figcaption></figure>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:browser-media-device-media-query */
const queryDefinitions=[["Tela estreita","(max-width: 600px)"],["vertical","(orientation: portrait)"],["Reduzir animações","(prefers-reduced-motion: reduce)"],["alto contraste","(prefers-contrast: more)"]];const queryRows=[...document.querySelectorAll('#queryFilters label')];const queryInputs=[...document.querySelectorAll('#queryFilters input')];const queryLists=queryDefinitions.map(entry=>matchMedia(entry[1]));function renderQueries(){const enabled=new Set(queryInputs.filter(input=>input.checked).map(input=>Number(input.value)));const matched=[];queryRows.forEach((row,index)=>{const active=enabled.has(index)&&queryLists[index].matches;row.classList.toggle('is-match',active);row.hidden=!enabled.has(index);if(active)matched.push(queryDefinitions[index][0]);});document.querySelector('#querySummary').textContent=matched.length+' Condição do ambiente do item atendida';document.querySelector('#queryMatches').replaceChildren(...matched.map(label=>{const item=document.createElement('li');item.textContent=label;return item;}));document.querySelector('#queryShape').style.transform='scale('+(1-Math.min(.24,matched.length*.05))+')';}queryInputs.forEach(input=>input.addEventListener('change',renderQueries));queryLists.forEach(query=>query.addEventListener?.('change',renderQueries));document.querySelector('#queryReset').addEventListener('click',()=>{queryInputs.forEach(input=>{input.checked=true;});queryRows.forEach(row=>{row.hidden=false;});renderQueries();announce('Todas as consultas de mídia foram restauradas');});renderQueries();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"browser-media-device-media-query","selector":"[data-core-bridge=\"browser-media-device-media-query\"]","mode":"toggle","key":" "};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+' · versão principal '+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.setAttribute('aria-keyshortcuts',workflowBridgeSpec.key===' '?'Space':workflowBridgeSpec.key);const workflowBridgeToggleKeyMatches=event=>event.key===workflowBridgeSpec.key||event.key==='Spacebar'||event.code==='Space';workflowBridgeControl.addEventListener('keydown',event=>{if(!workflowBridgeToggleKeyMatches(event))return;event.preventDefault();});workflowBridgeControl.addEventListener('keyup',event=>{if(!workflowBridgeToggleKeyMatches(event))return;event.preventDefault();workflowBridgeControl.click();});workflowBridgeControl.addEventListener("change",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=["Verificação de permissões do gravador de áudio","Registro de capacidade do gravador de áudio","Salvamento local do gravador de áudio"];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='Por favor, conclua no caso principal “'+workflowGuideStages[step]+'Ações relacionadas a ”.';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?'Capacidade de registro':'Concluir esta etapa';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+' Etapa concluída · '+workflowBridgeSummary();announce('Etapa atual do gravador de áudio:'+workflowGuideStages[step]);}function workflowGuideAdvance(direction){if(direction>0){const bridge=workflowBridgeActivate();const version=Number(workflowGuideCore.dataset.workflowVersion||0);if(version<=workflowGuideState.consumedVersion){announce('Complete primeiro a mudança visível de estado do caso principal');return;}workflowGuideState.consumedVersion=version;workflowGuideState.completed.add(workflowGuideState.step);announce('Mudanças do caso principal registradas · '+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('Prova não salva: o caso principal ainda não tem novas alterações');return;}const text=document.querySelector('#workflowGuideEvidence').value.trim();workflowGuideState.evidence.set(workflowGuideState.step,text||'Estado de visibilidade verificado como concluído');workflowGuideState.completed.add(workflowGuideState.step);workflowGuideState.consumedVersion=version;workflowGuideDrive();announce('Evidência desta etapa salva · '+workflowBridgeSummary());});document.querySelector('#workflowGuideDetails').addEventListener('toggle',event=>announce(event.currentTarget.open?'Requisitos de aceitação expandidos':'Requisitos de aceitação recolhidos'));workflowGuideDrive();
workflowBridgeReset();
</script>
</body>
</html>