hide logs, fix upload text, auto-scroll to download

frontend/index.html

@@ -416,23 +416,7 @@ input[type="range"]::-webkit-slider-thumb:hover {
   width: 0%;
 }
 
-.log-box {
-  background: #1C1A17;
-  color: #A89F94;
-  border-radius: 8px;
-  padding: 0.85rem 1rem;
-  font-family: 'SF Mono', 'Fira Code', monospace;
-  font-size: 11px;
-  line-height: 1.9;
-  max-height: 140px;
-  overflow-y: auto;
-  margin-top: 0.75rem;
-  white-space: pre-wrap;
-}
-
-.log-ok   { color: #6FCF97; }
-.log-err  { color: #EB5757; }
-.log-info { color: #56CCF2; }
+.log-box { display: none; }
 
 /* ── Results ─────────────────────────── */
 .stats-row {
@@ -560,9 +544,9 @@ footer a:hover { color: var(--ink); }
           <input type="file" id="fileModel" accept=".xlsx" multiple onchange="handleFiles('model', this.files)"/>
           <span class="drop-icon">📁</span>
           <div class="drop-text">
-            <strong>Drop model files here</strong>
+            <strong>Drop model file here</strong>
             or click to browse
-            <small>.xlsx only · multiple files accepted</small>
+            <small>.xlsx only · one file per species</small>
           </div>
         </div>
         <div class="file-chips" id="chipsModel"></div>
@@ -581,9 +565,9 @@ footer a:hover { color: var(--ink); }
           <input type="file" id="fileMapping" accept=".xlsx" multiple onchange="handleFiles('mapping', this.files)"/>
           <span class="drop-icon">📁</span>
           <div class="drop-text">
-            <strong>Drop mapping files here</strong>
+            <strong>Drop mapping file here</strong>
             or click to browse
-            <small>.xlsx only · same order as model files</small>
+            <small>.xlsx only · one file per species, same order as model</small>
           </div>
         </div>
         <div class="file-chips" id="chipsMapping"></div>
@@ -771,10 +755,13 @@ async function startJob() {
       sse.close();
       document.getElementById('statFiles').textContent    = (d.file_count   || '—').toLocaleString();
       document.getElementById('statSpecies').textContent  =  d.species_count || '—';
+      document.getElementById('downloadBtn').dataset.jobId = jobId;
       document.getElementById('resultsSection').classList.remove('hidden');
       document.getElementById('runBtn').disabled = false;
-      // Store job id for download
-      document.getElementById('downloadBtn').dataset.jobId = jobId;
+      // Auto-scroll to download button
+      setTimeout(() => {
+        document.getElementById('downloadBtn').scrollIntoView({ behavior: 'smooth', block: 'center' });
+      }, 300);
     }
 
     if (d.status === 'error') {