File Upload Skeleton Screen Transition
Skeleton screen transition for file upload scenarios: includes real content, interactive controls, clear state feedback, and responsive layouts.
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<!doctype html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>File Upload Skeleton Screen Transition</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); }
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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(1100px,calc(100% - 34px));margin:auto;padding:68px 0}.mast{display:grid;grid-template-columns:1fr auto;align-items:center;gap:40px;margin:0 4vw 36px}.mast h1{font-family:Optima,"Songti SC",serif;font-weight:700;font-size:clamp(40px,8vw,86px);letter-spacing:-.025em;margin:0;line-height:1.02}.eyebrow{display:block;margin-bottom:12px;color:var(--accent);font-size:12px;letter-spacing:.2em}.intro{max-width:60ch;line-height:1.9}.scenario{display:grid;width:108px;height:108px;place-items:center;padding:12px;border:1px solid var(--line);border-radius:50%;text-align:center}.demo{border-radius:72px 18px 72px 18px;box-shadow:0 28px 80px color-mix(in srgb,var(--ink) 14%,transparent);position:relative;min-height:430px;overflow:hidden;padding:clamp(28px,5vw,58px);background:color-mix(in srgb,var(--paper) 84%,transparent)}@media(max-width:700px){.page{width:calc(100% - 18px);padding:24px 0}.mast{grid-template-columns:1fr;margin-inline:12px}.scenario{width:auto;height:auto;border-radius:999px}.demo{padding:18px}}
.panel{padding:24px;border-block:1px solid var(--ink);background:transparent}.stack{display:grid;gap:22px}.row{display:flex;flex-wrap:wrap;gap:16px}.action{padding:8px 0;border:0;border-bottom:1px solid currentColor;background:transparent;letter-spacing:.08em}.action.primary,.action.is-active{color:var(--accent);border-bottom-width:4px}.status{min-height:28px;margin-top:20px;font-style:italic}.metric{font-family:Didot,serif;font-size:clamp(38px,8vw,76px)}.muted{max-width:54ch;line-height:1.8}.meter{position:relative;height:3px;background:var(--line)}.meter>i{position:absolute;inset:0 auto 0 0;background:var(--accent)}.chip{padding-bottom:3px;border-bottom:1px solid var(--ink);font-size:13px}
.composition-index{position:relative;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px}.index-mark{display:grid;align-content:space-between;width:76px;padding:16px 10px;border:1px solid var(--line);color:var(--accent);background:color-mix(in srgb,var(--paper) 82%,transparent);text-align:center}.index-mark strong{font:900 34px/1 ui-monospace,monospace}.index-mark span{writing-mode:vertical-rl;font:800 10px/1.2 ui-monospace,monospace;letter-spacing:.18em}.composition-index .demo{grid-column:1;grid-row:1}.composition-index::before{content:"";position:absolute;left:-12px;top:38px;width:5px;height:45%;background:linear-gradient(var(--accent),var(--secondary))}@media(max-width:700px){.composition-index{grid-template-columns:1fr}.index-mark{grid-row:1;width:auto;grid-template-columns:auto 1fr}.index-mark span{writing-mode:horizontal-tb}.composition-index .demo{grid-row:2}}
.skeleton-demo{display:grid;gap:20px;max-width:760px;margin:auto}.skeleton-demo header{display:flex;justify-content:space-between;gap:20px;align-items:end}.skeleton-demo h2{margin:.3em 0}.skeleton-card{display:grid;grid-template-columns:90px 1fr;gap:18px;padding:24px;border:1px solid var(--line);border-radius:18px}.skeleton-avatar,.skeleton-copy i{background:linear-gradient(90deg,var(--line),color-mix(in srgb,var(--paper) 75%,var(--secondary)),var(--line));background-size:220% 100%;animation:skeletonSweep 1.2s ease infinite}.skeleton-avatar{width:90px;aspect-ratio:1;border-radius:50%}.skeleton-copy{display:grid;align-content:center;gap:11px}.skeleton-copy i{display:block;height:16px;border-radius:999px}.skeleton-copy i:nth-child(2){width:82%}.skeleton-copy i:nth-child(3){width:55%}.skeleton-card.is-loaded{grid-template-columns:1fr}.skeleton-card.is-loaded>.skeleton-avatar,.skeleton-card.is-loaded>.skeleton-copy{display:none}.loaded-content{line-height:1.7}@keyframes skeletonSweep{to{background-position:-220% 0}}@media(max-width:520px){.skeleton-demo header{align-items:stretch;flex-direction:column}.skeleton-card{grid-template-columns:60px 1fr}.skeleton-avatar{width:60px}}.workflow-dispatch{display:grid;grid-template-columns:minmax(210px,.48fr) minmax(0,1.52fr);gap:18px}.dispatch-console{display:grid;align-content:start;gap:16px;padding:22px;border:1px solid var(--line);border-radius:18px;background:color-mix(in srgb,var(--secondary) 12%,var(--paper))}.dispatch-console h2{margin:.2em 0}.dispatch-console form,.dispatch-console label{display:grid;gap:7px}.dispatch-console input,.dispatch-console select{min-width:0;width:100%;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--paper)}.dispatch-console fieldset{display:flex;gap:12px;border:1px solid var(--line);border-radius:10px}.dispatch-console fieldset label{display:flex;align-items:center}.dispatch-workbench{--dispatch-load:.22;min-width:0;padding:14px;border-left:8px solid color-mix(in srgb,var(--accent) calc(var(--dispatch-load)*100%),var(--line));background:linear-gradient(90deg,color-mix(in srgb,var(--accent) 8%,transparent),transparent 28%)}.dispatch-workbench[data-dispatch-priority="urgent"]{box-shadow:inset 0 0 0 2px var(--accent)}@media(max-width:900px){.workflow-dispatch{grid-template-columns:1fr}.dispatch-console{order:2}}
</style>
</head>
<body data-aesthetic="organic" data-composition="field-index">
<main class="page">
<header class="mast"><div><span class="eyebrow">organic / Skeleton Screen Transition / ADVANCED</span><h1>File Upload Skeleton Screen Transition</h1><p class="intro">Skeleton screen transition for file upload scenarios: includes real content, interactive controls, clear state feedback, and responsive layouts.</p></div><span class="scenario">File Upload</span></header>
<div class="composition-index"><section class="demo" aria-label="File Upload Skeleton Screen Transition Interactive Area"><div class="workflow-dispatch"><aside class="dispatch-console"><span class="eyebrow">File Upload DISPATCH</span><h2>Upload Queue Control Center</h2><form id="workflowDispatchForm"><label>Task Type<select id="workflowDispatchKind"><option>Image File</option><option>Document File</option><option>Compressed Files</option></select></label><label>File count<input id="workflowDispatchAmount" type="number" min="1" max="9999" value="27"><span>one</span></label><fieldset><legend>Processing priority</legend><label><input type="radio" name="workflowPriority" value="normal" checked>Regular</label><label><input type="radio" name="workflowPriority" value="urgent">Urgent</label></fieldset><button class="action primary" type="submit">Start upload</button></form><label>Current task<select id="workflowDispatchActive" aria-label="Switch current task"><option value="1">Image File</option><option value="2">Document File</option></select></label><output id="workflowDispatchSummary">Waiting for Dispatch</output></aside><section id="workflowCore" class="workflow-core dispatch-workbench" data-dispatch-priority="normal"><!-- 11DZ_CORE_START:animation-microinteractions-skeleton-screen --><div class="skeleton-demo panel"><header><span class="eyebrow">SKELETON SCREEN</span><h2>File Upload Content Card</h2><button id="toggleSkeleton" class="action primary" type="button" data-core-bridge="animation-microinteractions-skeleton-screen">Loading content</button></header><article id="skeletonCard" class="skeleton-card" aria-busy="true"><div class="skeleton-avatar"></div><div class="skeleton-copy"><i></i><i></i><i></i></div><div class="loaded-content" hidden><strong>File upload update complete</strong><p>Skeleton placeholders are replaced with real content after the local simulated loading ends.</p></div></article></div><!-- 11DZ_CORE_END --></section></div><p id="status" class="status" role="status" aria-live="polite"></p></section><aside class="index-mark" aria-hidden="true"><strong>05</strong><span>File Upload FIELD INDEX</span></aside></div>
</main>
<script>
'use strict';
const statusOutput = document.querySelector('#status');
const announce = message => { statusOutput.textContent = message; };
/* 11DZ_CORE_SCRIPT_START:animation-microinteractions-skeleton-screen */
const skeletonCard=document.querySelector('#skeletonCard');const toggleSkeleton=document.querySelector('#toggleSkeleton');toggleSkeleton.addEventListener('click',()=>{const loaded=skeletonCard.classList.toggle('is-loaded');skeletonCard.setAttribute('aria-busy',String(!loaded));skeletonCard.querySelector('.loaded-content').hidden=!loaded;toggleSkeleton.textContent=loaded?'Show Skeleton Again':'Loading content';announce(loaded?'Content loading complete':'Skeleton Placeholder Restored');});
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"animation-microinteractions-skeleton-screen","selector":"[data-core-bridge=\"animation-microinteractions-skeleton-screen\"]","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 workflowDispatchCore=document.querySelector('#workflowCore');const workflowDispatchForm=document.querySelector('#workflowDispatchForm');const workflowDispatchSelect=document.querySelector('#workflowDispatchActive');const workflowDispatchJobs=new Map([["1",{"label":"Image File","amount":12,"priority":"normal","touches":0}],["2",{"label":"Document File","amount":21,"priority":"urgent","touches":0}]]);let workflowDispatchSerial=workflowDispatchJobs.size;function workflowDispatchDrive(job,activate=false){workflowDispatchCore.dataset.dispatchPriority=job.priority;workflowDispatchCore.style.setProperty('--dispatch-load',Math.min(.95,.16+job.amount/120));const bridge=activate?workflowBridgeActivate():{changed:false,summary:workflowBridgeSummary()};document.querySelector('#workflowDispatchSummary').textContent=job.label+' · '+job.amount+' items · '+bridge.summary;announce('Upload queue current task:'+job.label);}function workflowDispatchRender(activeId,activate=false){workflowDispatchSelect.replaceChildren(...[...workflowDispatchJobs].map(([id,job])=>{const option=document.createElement('option');option.value=id;option.textContent=job.label+(job.priority==='urgent'?' · Urgent':'');return option;}));workflowDispatchSelect.value=activeId;workflowDispatchDrive(workflowDispatchJobs.get(activeId),activate);}workflowDispatchForm.addEventListener('submit',event=>{event.preventDefault();const data=new FormData(workflowDispatchForm);const id=String(++workflowDispatchSerial);workflowDispatchJobs.set(id,{label:document.querySelector('#workflowDispatchKind').value,amount:Math.max(1,Number(document.querySelector('#workflowDispatchAmount').value)||1),priority:data.get('workflowPriority'),touches:0});workflowDispatchRender(id,true);});workflowDispatchSelect.addEventListener('change',()=>workflowDispatchDrive(workflowDispatchJobs.get(workflowDispatchSelect.value),true));workflowDispatchCore.addEventListener('focusin',()=>{const job=workflowDispatchJobs.get(workflowDispatchSelect.value);if(!job)return;job.touches+=1;document.querySelector('#workflowDispatchSummary').textContent=job.label+' · '+job.amount+' items · '+workflowBridgeSummary();});workflowDispatchRender('1',false);
workflowBridgeReset();
</script>
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