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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8"/>
<meta name="viewport" content="width=device-width,initial-scale=1.0"/>
<title>Problem Solver</title>
<link href="https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,400;0,500;0,600;1,400&display=swap" rel="stylesheet"/>
<style>
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
 --white:#ffffff;
 --bg:#f8f9fa;
 --bg2:#f1f3f5;
 --border:#e9ecef;
 --border2:#dee2e6;
 --text:#0f1117;
 --text2:#343a40;
 --text3:#6c757d;
 --text4:#adb5bd;
 --accent:#2563eb;
 --accent-h:#1d4ed8;
 --accent-bg:#eff6ff;
 --accent-border:#bfdbfe;
 --success:#16a34a;
 --success-bg:#f0fdf4;
 --success-border:#bbf7d0;
 --danger:#dc2626;
 --radius:10px;
 --radius-sm:7px;
 --shadow:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);
 --shadow-md:0 4px 6px rgba(0,0,0,.05),0 2px 4px rgba(0,0,0,.04);
}
html,body{height:100%;font-family:'Inter',system-ui,sans-serif;font-size:15px;line-height:1.5;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;}
/* ── Layout ── */
.app{display:grid;grid-template-rows:57px 1fr;height:100vh;overflow:hidden;}
/* ── Nav ── */
.nav{
 display:flex;align-items:center;padding:0 28px;
 background:var(--white);border-bottom:1px solid var(--border);
 box-shadow:var(--shadow);position:relative;z-index:10;
}
.nav-logo{display:flex;align-items:center;gap:9px;}
.nav-mark{
 width:28px;height:28px;background:var(--accent);border-radius:7px;
 display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.nav-mark svg{width:14px;height:14px;stroke:#fff;fill:none;stroke-width:2.5;}
.nav-name{font-size:15px;font-weight:600;color:var(--text);letter-spacing:-.01em;}
/* ── Body ── */
.body{display:grid;grid-template-columns:380px 1fr;overflow:hidden;}
/* ── Sidebar ── */
.side{
 background:var(--white);border-right:1px solid var(--border);
 display:flex;flex-direction:column;overflow:hidden;
}
.side-scroll{flex:1;overflow-y:auto;padding:28px 24px 0;}
.side-scroll::-webkit-scrollbar{width:0;}
.side-foot{padding:20px 24px;border-top:1px solid var(--border);}
/* Section label */
.slabel{
 font-size:11px;font-weight:600;color:var(--text4);
 letter-spacing:.08em;text-transform:uppercase;
 margin-bottom:10px;
}
/* Name field */
.name-field{margin-bottom:28px;}
.name-field label{display:block;font-size:13px;font-weight:500;color:var(--text3);margin-bottom:6px;}
input[type=text]{
 width:100%;background:var(--bg);border:1.5px solid var(--border);
 border-radius:var(--radius-sm);color:var(--text);
 font:inherit;font-size:15px;padding:10px 14px;
 outline:none;transition:border-color .15s,box-shadow .15s;
}
input[type=text]:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.1);}
input::placeholder{color:var(--text4);}
/* ── Tabs ── */
.tabs{
 display:grid;grid-template-columns:1fr 1fr;
 gap:0;background:var(--bg2);border-radius:var(--radius);
 padding:3px;margin-bottom:16px;
}
.tab{
 padding:9px 12px;text-align:center;font-size:14px;font-weight:500;
 color:var(--text3);border-radius:8px;cursor:pointer;
 transition:all .18s;user-select:none;
}
.tab.on{
 background:var(--white);color:var(--text);font-weight:600;
 box-shadow:var(--shadow);
}
/* ── Panes ── */
#pp,#up{display:none;}
#pp.on,#up.on{display:block;}
/* Upload — primary */
.drop{
 border:2px dashed var(--border2);border-radius:var(--radius);
 padding:36px 20px;text-align:center;cursor:pointer;
 background:var(--bg);transition:border-color .2s,background .2s;
 position:relative;
}
.drop:hover,.drop.over{border-color:var(--accent);background:var(--accent-bg);}
.drop-icon{
 width:44px;height:44px;border-radius:11px;
 background:var(--white);border:1.5px solid var(--border);
 display:flex;align-items:center;justify-content:center;
 margin:0 auto 14px;box-shadow:var(--shadow);
}
.drop-icon svg{width:20px;height:20px;stroke:var(--text3);fill:none;stroke-width:1.8;}
.drop h4{font-size:15px;font-weight:600;color:var(--text2);margin-bottom:4px;}
.drop p{font-size:13px;color:var(--text3);line-height:1.5;}
.drop-chips{display:flex;gap:6px;justify-content:center;margin-top:12px;}
.chip{
 font-size:11px;font-weight:500;color:var(--text3);
 background:var(--white);border:1px solid var(--border);
 border-radius:4px;padding:2px 7px;letter-spacing:.03em;
}
.fbadge{
 display:none;align-items:center;gap:10px;
 padding:11px 14px;background:var(--success-bg);
 border:1.5px solid var(--success-border);border-radius:var(--radius-sm);
 margin-top:12px;
}
.fbadge.on{display:flex;}
.fbadge-icon{width:28px;height:28px;background:var(--success-bg);border:1.5px solid var(--success-border);border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.fbadge-icon svg{width:14px;height:14px;stroke:var(--success);fill:none;stroke-width:2;}
.fbadge-name{flex:1;font-size:13px;font-weight:500;color:var(--success);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.fbadge-clear{cursor:pointer;color:var(--text4);font-size:16px;line-height:1;transition:color .15s;}
.fbadge-clear:hover{color:var(--text2);}
input[type=file]{display:none;}
/* Textarea */
textarea{
 width:100%;background:var(--bg);border:1.5px solid var(--border);
 border-radius:var(--radius);color:var(--text);
 font:inherit;font-size:14px;line-height:1.7;
 padding:14px;min-height:220px;resize:none;outline:none;
 transition:border-color .15s,box-shadow .15s;
}
textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(37,99,235,.1);}
textarea::placeholder{color:var(--text4);}
/* ── Buttons ── */
.btn-run{
 width:100%;background:var(--accent);color:#fff;border:none;
 border-radius:var(--radius-sm);padding:13px 18px;
 font:inherit;font-size:15px;font-weight:600;cursor:pointer;
 display:flex;align-items:center;justify-content:center;gap:8px;
 transition:background .15s,box-shadow .15s,transform .1s;
 letter-spacing:-.01em;
}
.btn-run:hover:not(:disabled){background:var(--accent-h);box-shadow:0 4px 14px rgba(37,99,235,.35);}
.btn-run:active:not(:disabled){transform:scale(.985);}
.btn-run:disabled{opacity:.45;cursor:not-allowed;}
.btn-run svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2.5;}
.btn-pdf{
 width:100%;margin-top:8px;background:transparent;
 color:var(--text3);border:1.5px solid var(--border);
 border-radius:var(--radius-sm);padding:11px 18px;
 font:inherit;font-size:14px;font-weight:500;cursor:pointer;
 display:flex;align-items:center;justify-content:center;gap:8px;
 transition:all .15s;
}
.btn-pdf:hover:not(:disabled){background:var(--success-bg);color:var(--success);border-color:var(--success-border);}
.btn-pdf:disabled{opacity:.3;cursor:not-allowed;}
.btn-pdf svg{width:13px;height:13px;stroke:currentColor;fill:none;stroke-width:2;}
/* ── Main output ── */
.main{display:flex;flex-direction:column;overflow:hidden;background:var(--white);}
.bar{
 display:flex;align-items:center;gap:10px;
 padding:0 28px;height:46px;border-bottom:1px solid var(--border);flex-shrink:0;
 background:var(--white);
}
.sdot{width:7px;height:7px;border-radius:50%;background:var(--border);flex-shrink:0;transition:background .3s;}
.sdot.run{background:var(--accent);animation:pulse .9s infinite;}
.sdot.done{background:var(--success);}
.sdot.err{background:var(--danger);}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.stxt{font-size:13px;color:var(--text3);}
.pipe{margin-left:auto;display:flex;align-items:center;gap:4px;}
.pn{
 font-size:11.5px;font-weight:500;color:var(--text4);
 padding:3px 9px;border-radius:5px;
 border:1px solid transparent;background:transparent;
 transition:all .2s;
}
.pn.run{color:var(--accent);border-color:var(--accent-border);background:var(--accent-bg);}
.pn.done{color:var(--success);border-color:var(--success-border);background:var(--success-bg);}
.ps{font-size:10px;color:var(--border);}
/* ── Output ── */
.out{flex:1;overflow-y:auto;background:var(--white);}
.out::-webkit-scrollbar{width:4px;}
.out::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px;}
.empty{
 display:flex;flex-direction:column;align-items:center;
 justify-content:center;height:100%;gap:14px;
 text-align:center;padding-bottom:60px;
}
.empty-ico{
 width:52px;height:52px;border-radius:13px;
 background:var(--bg);border:1.5px solid var(--border);
 display:flex;align-items:center;justify-content:center;
}
.empty-ico svg{width:22px;height:22px;stroke:var(--text4);fill:none;stroke-width:1.6;}
.empty h3{font-size:17px;font-weight:600;color:var(--text2);letter-spacing:-.01em;}
.empty p{font-size:14px;color:var(--text3);max-width:280px;line-height:1.65;}
/* ── Output sections ── */
.section{
 border-bottom:1px solid var(--border);
 padding:24px 32px;
 opacity:0;transform:translateY(8px);
 transition:opacity .35s ease,transform .35s ease;
}
.section.in{opacity:1;transform:translateY(0);}
.section:last-child{border-bottom:none;}
.section-hd{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.section-badge{
 font-size:11px;font-weight:600;color:var(--text3);
 background:var(--bg2);border:1px solid var(--border);
 border-radius:5px;padding:2px 8px;letter-spacing:.04em;
 text-transform:uppercase;flex-shrink:0;
}
.section-title{font-size:15px;font-weight:600;color:var(--text);letter-spacing:-.01em;flex:1;}
.section-spin{
 width:14px;height:14px;flex-shrink:0;
 border:1.8px solid var(--text4);border-top-color:transparent;
 border-radius:50%;animation:spin .7s linear infinite;
}
.section-tick{font-size:15px;color:var(--success);flex-shrink:0;}
@keyframes spin{to{transform:rotate(360deg)}}
/* ── Prose ── */
.prose{font-size:15px;line-height:1.8;color:var(--text2);}
.prose h2{
 font-size:14px;font-weight:600;color:var(--text);
 margin:20px 0 8px;letter-spacing:-.01em;
}
.prose h2:first-child{margin-top:0;}
.prose h3{font-size:14px;font-weight:600;color:var(--text2);margin:14px 0 5px;}
.prose strong{font-weight:600;color:var(--text);}
.prose ul,.prose ol{padding-left:20px;margin:6px 0 10px;}
.prose li{margin-bottom:4px;}
.prose br+br{display:none;}
/* ── Toast ── */
.toast{
 position:fixed;bottom:20px;left:50%;transform:translateX(-50%);
 background:var(--text);color:#fff;padding:10px 18px;
 border-radius:8px;font-size:14px;display:none;z-index:999;
 box-shadow:var(--shadow-md);white-space:nowrap;
}
.toast.err{background:var(--danger);}
@media(max-width:780px){
 .body{grid-template-columns:1fr;}
 .side{border-right:none;border-bottom:1px solid var(--border);}
 .main{min-height:55vh;}
 .pipe{display:none;}
}
</style>
</head>
<body>
<div class="app">
<nav class="nav">
 <div class="nav-logo">
 <div class="nav-mark">
 <svg viewBox="0 0 24 24"><path d="M9 12l2 2 4-4M21 12a9 9 0 11-18 0 9 9 0 0118 0z"/></svg>
 </div>
 <span class="nav-name">Problem Solver</span>
 </div>
 </nav>
<div class="body">
<!-- Sidebar -->
 <aside class="side">
 <div class="side-scroll">
<div class="slabel">Your name</div>
 <div class="name-field">
 <input type="text" id="iName" placeholder="e.g. Priya Sharma"/>
 </div>
<div class="slabel">Input</div>
 <div class="tabs">
 <div class="tab on" id="tUpload" onclick="setTab('upload')">Upload file</div>
 <div class="tab" id="tPaste" onclick="setTab('paste')">Paste text</div>
 </div>
<!-- Upload — default -->
 <div id="up" class="on">
 <div class="drop" id="dz"
 onclick="document.getElementById('fi').click()"
 ondragover="dg(event,true)" ondragleave="dg(event,false)" ondrop="dp(event)">
 <div class="drop-icon">
 <svg viewBox="0 0 24 24"><path d="M4 16v2a2 2 0 002 2h12a2 2 0 002-2v-2M16 10l-4-4-4 4M12 6v10"/></svg>
 </div>
 <h4>Upload a file</h4>
 <p>Drag & drop or click to browse</p>
 <div class="drop-chips">
 <span class="chip">PDF</span>
 <span class="chip">TXT</span>
 <span class="chip">MD</span>
 </div>
 </div>
 <div class="fbadge" id="fb">
 <div class="fbadge-icon">
 <svg viewBox="0 0 24 24"><path d="M9 12l2 2 4-4"/><rect x="3" y="3" width="18" height="18" rx="3"/></svg>
 </div>
 <span class="fbadge-name" id="fn">—</span>
 <span class="fbadge-clear" onclick="cf()">✕</span>
 </div>
 <input type="file" id="fi" accept=".pdf,.txt,.md" onchange="pf(event)"/>
 </div>
<!-- Paste text -->
 <div id="pp">
 <textarea id="tx" placeholder="Paste your transcript, meeting notes, problem description, or any text you want analyzed…"></textarea>
 </div>
</div>
<div class="side-foot">
 <button class="btn-run" id="bRun" onclick="run()">
 <svg viewBox="0 0 24 24"><path d="M5 3l14 9-14 9V3z"/></svg>
 Analyze
 </button>
 <button class="btn-pdf" id="bPdf" disabled onclick="getPdf()">
 <svg viewBox="0 0 24 24"><path d="M12 15V3m0 12l-4-4m4 4l4-4M3 17v2a2 2 0 002 2h14a2 2 0 002-2v-2"/></svg>
 Download PDF
 </button>
 </div>
 </aside>
<!-- Output -->
 <main class="main">
 <div class="bar">
 <div class="sdot" id="sd"></div>
 <span class="stxt" id="st">Ready</span>
 <div class="pipe">
 <div class="pn" id="pn0">Analysis</div><div class="ps">›</div>
 <div class="pn" id="pn1">Root Cause</div><div class="ps">›</div>
 <div class="pn" id="pn2">Solutions</div><div class="ps">›</div>
 <div class="pn" id="pn3">Action Plan</div><div class="ps">›</div>
 <div class="pn" id="pn4">Reflection</div>
 </div>
 </div>
<div class="out" id="out">
 <div class="empty" id="es">
 <div class="empty-ico">
 <svg viewBox="0 0 24 24"><path d="M9.663 17h4.673M12 3v1m6.364 1.636l-.707.707M21 12h-1M4 12H3m3.343-5.657l-.707-.707m2.828 9.9a5 5 0 117.072 0l-.548.547A3.374 3.374 0 0014 18.469V19a2 2 0 11-4 0v-.531c0-.895-.356-1.754-.988-2.386l-.548-.547z"/></svg>
 </div>
 <h3>Upload or paste your transcript</h3>
 <p>Meeting notes, interview recordings, problem descriptions — five agents will break it down and hand you a clear plan.</p>
 </div>
 </div>
 </main>
</div>
</div>
<div class="toast" id="toast"></div>
<script>
const API='https://banao-tech-problem-decoder.hf.space';
const AG=[
 {key:'analyst', title:'Problem Analysis', n:'01'},
 {key:'root_cause', title:'Root Cause', n:'02'},
 {key:'solutions', title:'Solutions', n:'03'},
 {key:'action_plan', title:'Action Plan', n:'04'},
 {key:'thinking', title:'Reflection', n:'05'},
];
let running=false,selFile=null,lastP=null,tab='upload';
function setTab(t){
 tab=t;
 document.getElementById('tUpload').classList.toggle('on',t==='upload');
 document.getElementById('tPaste').classList.toggle('on',t==='paste');
 document.getElementById('up').classList.toggle('on',t==='upload');
 document.getElementById('pp').classList.toggle('on',t==='paste');
}
function dg(e,on){e.preventDefault();document.getElementById('dz').classList.toggle('over',on);}
function dp(e){e.preventDefault();document.getElementById('dz').classList.remove('over');const f=e.dataTransfer.files[0];if(f)sf(f);}
function pf(e){const f=e.target.files[0];if(f)sf(f);}
function sf(f){
 selFile=f;
 document.getElementById('fn').textContent=f.name;
 document.getElementById('fb').classList.add('on');
}
function cf(){
 selFile=null;
 document.getElementById('fn').textContent='—';
 document.getElementById('fb').classList.remove('on');
 document.getElementById('fi').value='';
}
function toast(m,e=false){
 const t=document.getElementById('toast');
 t.textContent=m;t.className='toast'+(e?' err':'');
 t.style.display='block';
 setTimeout(()=>t.style.display='none',3500);
}
function ss(txt,s=''){
 document.getElementById('st').textContent=txt;
 document.getElementById('sd').className='sdot '+s;
}
function sp(i,s){const e=document.getElementById('pn'+i);if(e)e.className='pn '+s;}
function rp(){for(let i=0;i<5;i++)sp(i,'');}
function md(s){
 return s
 .replace(/^## (.+)$/gm,'<h2>$1</h2>')
 .replace(/^### (.+)$/gm,'<h3>$1</h3>')
 .replace(/\*\*(.+?)\*\*/g,'<strong>$1</strong>')
 .replace(/^[-*] (.+)$/gm,'<li>$1</li>')
 .replace(/(<li>[^]*?<\/li>\n?)+/g,x=>`<ul>${x}</ul>`)
 .replace(/\n/g,'<br>');
}
async function rf(f){
 if(f.name.endsWith('.pdf')){
 return new Promise((res,rej)=>{
 const r=new FileReader();
 r.onload=()=>res('__PDF_BASE64__'+r.result.split(',')[1]);
 r.onerror=rej;r.readAsDataURL(f);
 });
 }
 return new Promise((res,rej)=>{
 const r=new FileReader();
 r.onload=()=>res(r.result);
 r.onerror=rej;r.readAsText(f);
 });
}
async function run(){
 if(running)return;
 const name=document.getElementById('iName').value.trim()||'Anonymous';
 let content='';
 if(tab==='upload'){
 if(!selFile){toast('Upload a file first.',true);return;}
 try{content=await rf(selFile);}catch{toast('Could not read file.',true);return;}
 } else {
 content=document.getElementById('tx').value.trim();
 if(!content){toast('Paste something first.',true);return;}
 }
 running=true;
 lastP={content,user_name:name,user_role:'',user_goal:''};
 document.getElementById('bRun').disabled=true;
 document.getElementById('bPdf').disabled=true;
 rp();
 const out=document.getElementById('out');
 out.innerHTML='';
 ss('Running…','run');
 AG.forEach(a=>{
 const d=document.createElement('div');
 d.className='section';
 d.id='s-'+a.key;
 d.innerHTML=`
 <div class="section-hd">
 <span class="section-badge">${a.n}</span>
 <span class="section-title">${a.title}</span>
 <div class="section-spin" id="sp-${a.key}"></div>
 </div>
 <div class="prose" id="pr-${a.key}"></div>`;
 out.appendChild(d);
 });
 try{
 const res=await fetch(`${API}/analyze/stream`,{
 method:'POST',headers:{'Content-Type':'application/json'},
 body:JSON.stringify(lastP),
 });
 if(!res.ok){const e=await res.json().catch(()=>({detail:res.statusText}));throw new Error(e.detail);}
 const reader=res.body.getReader(),dec=new TextDecoder();
 let buf='',cur=null;
 while(true){
 const{done,value}=await reader.read();
 if(done)break;
 buf+=dec.decode(value,{stream:true});
 const lines=buf.split('\n');buf=lines.pop();
 for(const line of lines){
 if(!line.startsWith('data: '))continue;
 try{
 const m=JSON.parse(line.slice(6));
 if(m.event==='agent_start'){
 cur=m.agent;
 const i=AG.findIndex(a=>a.key===cur);
 sp(i,'run');
 document.getElementById('s-'+cur).classList.add('in');
 ss(m.label+'…','run');
 document.getElementById('s-'+cur).scrollIntoView({behavior:'smooth',block:'nearest'});
 } else if(m.event==='token'&&m.agent===cur){
 const p=document.getElementById('pr-'+m.agent);
 if(p){p.dataset.r=(p.dataset.r||'')+m.text;p.innerHTML=md(p.dataset.r);}
 } else if(m.event==='agent_done'){
 const sp2=document.getElementById('sp-'+m.agent);
 if(sp2)sp2.outerHTML='<span class="section-tick">✓</span>';
 const i=AG.findIndex(a=>a.key===m.agent);
 sp(i,'done');
 } else if(m.event==='done'){
 ss('Analysis complete','done');
 document.getElementById('bPdf').disabled=false;
 }
 }catch{}
 }
 }
 }catch(e){ss('Something went wrong','err');toast(e.message,true);}
 running=false;
 document.getElementById('bRun').disabled=false;
}
async function getPdf(){
 if(!lastP)return;
 const b=document.getElementById('bPdf');
 b.textContent='Generating…';b.disabled=true;
 try{
 const res=await fetch(`${API}/analyze/pdf`,{
 method:'POST',headers:{'Content-Type':'application/json'},
 body:JSON.stringify(lastP),
 });
 if(!res.ok)throw new Error('PDF generation failed');
 const blob=await res.blob(),a=document.createElement('a');
 a.href=URL.createObjectURL(blob);
 a.download=`analysis_${Date.now()}.pdf`;
 a.click();
 }catch(e){toast(e.message,true);}
 b.innerHTML='<svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><path d="M12 15V3m0 12l-4-4m4 4l4-4M3 17v2a2 2 0 002 2h14a2 2 0 002-2v-2"/></svg> Download PDF';
 b.disabled=false;
}
</script>
</body>
</html>