diff --git a/app.js b/app.js
index 891de36..c1d096d 100644
--- a/app.js
+++ b/app.js
@@ -1,26 +1,4 @@
-var charts = {};
-
-document.getElementById('uploadBtn').addEventListener('click', function() {
-    document.getElementById('excelFile').click();
-});
-
-document.getElementById('excelFile').addEventListener('change', function(e) {
-    var file = e.target.files[0];
-    if (!file) return;
-    document.getElementById('statusMsg').textContent = 'Загрузка: ' + file.name + '...';
-
-    var reader = new FileReader();
-    reader.onload = function(ev) {
-        try {
-            var arr = new Uint8Array(ev.target.result);
-            var wb = XLSX.read(arr, {type: 'array'});
-            var ws = wb.Sheets[wb.SheetNames[0]];
-            var rows = XLSX.utils.sheet_to_json(ws, {defval: ''});
-            if (!rows.length) { document.getElementById('statusMsg').textContent = 'Файл пуст'; return; }
-            build(rows);
-        } catch(err) {
-            document.getElementById('statusMsg').textContent = 'Ошибка: ' + err.message;
-        }
+// Chart utility functions removed - using tables instead
     };
     reader.readAsArrayBuffer(file);
 });
@@ -114,24 +92,6 @@ function build(raw) {
     document.querySelector('#tblAll tbody').innerHTML = d.map(function(r){
         return '<tr><td>'+(r.name||'')+'</td><td>'+(r.division||'')+'</td><td>'+(r.course||'')+'</td><td>'+(r.status||'')+'</td><td>'+(r.score||'')+'</td><td>'+(r.trainer||'')+'</td></tr>';
     }).join('');
-
-    var cph = {};
-    d.forEach(function(r){if(!cph[r.name])cph[r.name]={d:r.division||'',c:{} };if(r.course)cph[r.name].c[r.course]=true});
-    var champs=Object.keys(cph).map(function(n){return{name:n,div:cph[n].d,cnt:Object.keys(cph[n].c).length}})
-        .sort(function(a,b){return b.cnt-a.cnt}).slice(0,10);
-    document.querySelector('#tblChamp tbody').innerHTML = champs.map(function(c){
-        return '<tr><td>'+c.name+'</td><td>'+c.div+'</td><td>'+c.cnt+'</td></tr>';
-    }).join('');
-
-    var noT=Object.keys(allN).filter(function(n){return !doneN[n]});
-    document.querySelector('#tblNoTrain tbody').innerHTML = noT.slice(0,20).map(function(n){
-        return '<tr><td>'+n+'</td><td>'+(cph[n]?cph[n].d:'')+'</td></tr>';
-    }).join('');
-
-    document.querySelector('#tblAll tbody').innerHTML = d.map(function(r){
-        var cls=done(r.status)?'status-completed':'status-not-started';
-        return '<tr><td>'+(r.name||'')+'</td><td>'+(r.division||'')+'</td><td>'+(r.course||'')+'</td><td class="'+cls+'">'+(r.status||'')+'</td><td>'+(r.score||'')+'</td><td>'+(r.trainer||'')+'</td></tr>';
-    }).join('');
 }
 
 function barH(id, labels, ds) {