qs.toString(), {method:'POST', headers:{'Content-Type':'application/x-www-form-urlencoded'}, body:body}).then(function(r){return r.json()});
}

function toast(msg, ok) {
    var t = document.createElement('div');
    t.className = 'toast ' + (ok ? 'ok' : 'err');
    t.textContent = msg;
    document.body.appendChild(t);
    setTimeout(function() { t.remove(); }, 3000);
}

function formatSize(b) {
    if (b === 0) return '-';
    if (b < 1024) return b + ' B';
    if (b < 1048576) return (b/1024).toFixed(1) + ' KB';
    if (b < 1073741824) return (b/1048576).toFixed(1) + ' MB';
    return (b/1073741824).toFixed(1) + ' GB';
}

function fileIcon(item) {
    if (item.d) return '<span style="color:var(--accent);font-weight:600">DIR</span>';
    var e = (item.e || '').toLowerCase();
    var icons = {
        php:'<span style="color:#8892BF">PH</span>', js:'<span style="color:#f0db4f">JS</span>',
        html:'<span style="color:#e34c26">HT</span>', htm:'<span style="color:#e34c26">HT</span>',
        css:'<span style="color:#264de4">CS</span>', json:'<span style="color:#5B5B5B">{}</span>',
        xml:'<span style="color:#ff6600">XM</span>', txt:'<span style="color:var(--dim)">TX</span>