Deep-sea gradient mesh experiment
Complete a gradient mesh experiment in a deep-sea scene: includes real content, interactive controls, clear state feedback, and responsive layouts.
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>Deep-sea gradient mesh experiment</title>
<style>
:root { --ink:#3a2419; --paper:#fbf3df; --accent:#c66a2d; --secondary:#b5c88d; --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:Baskerville,"Songti SC",serif; background:linear-gradient(90deg,var(--paper) 0 72%,color-mix(in srgb,var(--secondary) 18%,var(--paper)) 72%); }
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(1200px,calc(100% - 38px));margin:auto;padding:76px 0}.mast{display:grid;grid-template-columns:2fr 1fr;gap:7vw;align-items:center;margin-bottom:44px}.mast h1{font-family:Baskerville,"Songti SC",serif;font-weight:800;font-size:clamp(48px,11vw,112px);line-height:.86;letter-spacing:-.06em;margin:0}.eyebrow{display:block;margin-bottom:22px;color:var(--accent);font:800 11px/1 ui-monospace,monospace;letter-spacing:.26em}.intro{max-width:46ch;margin-top:26px;font-size:17px;line-height:1.85}.scenario{align-self:end;padding-bottom:14px;border-bottom:5px solid var(--accent);font-weight:800}.demo{border-radius:0 60px 0 0;box-shadow:-16px 18px 0 color-mix(in srgb,var(--accent) 22%,transparent);position:relative;min-height:460px;overflow:hidden;padding:clamp(30px,6vw,72px);background:color-mix(in srgb,var(--paper) 92%,#fff)}@media(max-width:700px){.page{width:calc(100% - 22px);padding:30px 0}.mast{grid-template-columns:1fr}.demo{padding:20px}}
.panel{padding:18px;border:2px solid var(--line);border-radius:26px;box-shadow:0 12px 0 color-mix(in srgb,var(--secondary) 35%,transparent)}.row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.stack{display:grid;gap:12px}.action{padding:12px 20px;border:2px solid var(--ink);border-radius:14px;background:var(--paper);box-shadow:0 5px 0 var(--ink);font-weight:800}.action:active{transform:translateY(4px);box-shadow:0 1px 0 var(--ink)}.action.primary,.action.is-active{color:var(--paper);background:var(--accent)}.status{text-align:center;min-height:26px;margin-top:18px}.metric{text-align:center;font-size:clamp(34px,8vw,70px);font-weight:900}.muted{text-align:center;opacity:.7}.meter{height:14px;padding:2px;border:2px solid var(--ink);border-radius:999px}.meter>i{display:block;height:100%;border-radius:inherit;background:var(--secondary)}.chip{padding:7px 11px;border-radius:12px;background:color-mix(in srgb,var(--accent) 12%,transparent)}
.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}
.mesh-lab{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(220px,.6fr);gap:16px}.mesh-stage{--mesh-hue:208;--mesh-sat:78%;--x1:18%;--y1:22%;--x2:82%;--y2:18%;--x3:62%;--y3:82%;position:relative;display:grid;min-height:450px;place-items:center;overflow:hidden;border:1px solid var(--line);border-radius:28px;background:radial-gradient(circle at var(--x1) var(--y1),hsl(var(--mesh-hue) var(--mesh-sat) 68%) 0 5%,transparent 34%),radial-gradient(circle at var(--x2) var(--y2),hsl(calc(var(--mesh-hue) + 74) var(--mesh-sat) 70%) 0 4%,transparent 38%),radial-gradient(circle at var(--x3) var(--y3),hsl(calc(var(--mesh-hue) + 154) var(--mesh-sat) 64%) 0 4%,transparent 40%),linear-gradient(135deg,hsl(calc(var(--mesh-hue) - 28) 46% 14%),hsl(calc(var(--mesh-hue) + 32) 56% 26%));transition:background .5s ease}.mesh-stage::after{content:"";position:absolute;inset:0;background:linear-gradient(120deg,transparent,rgba(255,255,255,.17),transparent);mix-blend-mode:overlay}.mesh-stage>div{position:relative;z-index:2;max-width:620px;padding:clamp(28px,7vw,72px);color:white;text-align:center}.mesh-stage h2{margin:.25em 0;font-size:clamp(36px,7vw,78px);line-height:.94}.mesh-controls{display:grid;align-content:center;gap:17px}.mesh-controls label{display:grid;grid-template-columns:1fr auto;gap:8px;font-weight:800}.mesh-controls input{grid-column:1/-1}@media(max-width:740px){.mesh-lab{grid-template-columns:1fr}.mesh-stage{min-height:340px}}.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="magazine" data-composition="studio">
<main class="page">
<header class="mast"><div><span class="eyebrow">magazine / gradient mesh experiment / BEGINNER</span><h1>Deep-sea gradient mesh experiment</h1><p class="intro">Complete a gradient mesh experiment in a deep-sea scene: includes real content, interactive controls, clear state feedback, and responsive layouts.</p></div><span class="scenario">Deep Sea</span></header>
<div class="composition-studio"><div class="studio-ruler" aria-hidden="true"></div><section class="demo" aria-label="Deep-sea gradient mesh experimental interaction area"><div class="workflow-dispatch"><aside class="dispatch-console"><span class="eyebrow">Deep Sea DISPATCH</span><h2>Submarine mission control</h2><form id="workflowDispatchForm"><label>Task Type<select id="workflowDispatchKind"><option>Sonar Scan</option><option>Hot Spring Sampling</option><option>Return Beacon</option></select></label><label>Subsea Depth<input id="workflowDispatchAmount" type="number" min="1" max="9999" value="24"><span>m</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">Dive in</button></form><label>Current task<select id="workflowDispatchActive" aria-label="Switch current task"><option value="1">Sonar Scan</option><option value="2">Hot Spring Sampling</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:creative-effects-gradient-mesh --><div class="mesh-lab"><section id="meshStage" class="mesh-stage" aria-label="Deep-sea gradient mesh experiment"><div><span>Deep Sea</span><h2>Colors blend naturally between multiple anchors</h2><p>Each light spot is an independent grid anchor.</p></div></section><aside class="mesh-controls panel"><span class="eyebrow">GRADIENT MESH</span><h2>Gradient Mesh Experiment</h2><label>Primary Hue <input id="meshHue" type="range" min="0" max="360" value="208" data-core-bridge="creative-effects-gradient-mesh"><output id="meshHueValue">208°</output></label><label>Color intensity <input id="meshSaturation" type="range" min="35" max="100" value="78"><output id="meshSaturationValue">78%</output></label><button id="meshArrange" class="action primary" type="button">Mobile Grid Anchor Points</button></aside></div><!-- 11DZ_CORE_END --></section></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:creative-effects-gradient-mesh */
const meshStage=document.querySelector('#meshStage');const meshHue=document.querySelector('#meshHue');const meshSaturation=document.querySelector('#meshSaturation');const meshPositions=[[18,22,82,18,62,82],[72,16,22,66,84,78],[42,12,88,54,18,88],[12,48,58,22,74,86]];let meshPosition=0;function renderMesh(){meshStage.style.setProperty('--mesh-hue',meshHue.value);meshStage.style.setProperty('--mesh-sat',meshSaturation.value+'%');document.querySelector('#meshHueValue').textContent=meshHue.value+'°';document.querySelector('#meshSaturationValue').textContent=meshSaturation.value+'%';announce('Mesh hue '+meshHue.value+' Degree, concentration '+meshSaturation.value+'%');}[meshHue,meshSaturation].forEach(input=>input.addEventListener('input',renderMesh));document.querySelector('#meshArrange').addEventListener('click',()=>{meshPosition=(meshPosition+1)%meshPositions.length;const values=meshPositions[meshPosition];['--x1','--y1','--x2','--y2','--x3','--y3'].forEach((name,index)=>meshStage.style.setProperty(name,values[index]+'%'));announce('Gradient mesh anchors have been rearranged');});renderMesh();
/* 11DZ_CORE_SCRIPT_END */
const workflowBridgeSpec={"name":"creative-effects-gradient-mesh","selector":"[data-core-bridge=\"creative-effects-gradient-mesh\"]","mode":"range","key":"ArrowRight"};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("input",workflowBridgeScheduleCommit);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();const step=Number(workflowBridgeControl.step)||1;const min=workflowBridgeControl.min===''?-Infinity:Number(workflowBridgeControl.min);const max=workflowBridgeControl.max===''?Infinity:Number(workflowBridgeControl.max);let next=Math.min(max,Math.max(min,(Number(workflowBridgeControl.value)||0)+step));if(next===Number(workflowBridgeControl.value))next=Math.max(min,Number(workflowBridgeControl.value)-step);workflowBridgeControl.value=String(next);workflowBridgeControl.dispatchEvent(new Event('input',{bubbles:true}));workflowBridgeControl.dispatchEvent(new Event('change',{bubbles:true}));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":"Sonar Scan","amount":12,"priority":"normal","touches":0}],["2",{"label":"Hot Spring Sampling","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+' m · '+bridge.summary;announce('Dive mission 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+' m · '+workflowBridgeSummary();});workflowDispatchRender('1',false);
workflowBridgeReset();
</script>
</body>
</html>