diff --git a/src/web/public/app.js b/src/web/public/app.js
index 8dd00d49..72ae366e 100644
--- a/src/web/public/app.js
+++ b/src/web/public/app.js
@@ -1757,6 +1757,17 @@ class CodemanApp {
         else if (wantIdle && !hasIdle) { tab.classList.add('tab-alert-idle'); tab.classList.remove('tab-alert-action'); }
         else if (!alertType && (hasAction || hasIdle)) { tab.classList.remove('tab-alert-action', 'tab-alert-idle'); }
 
+        // Inject tab-number badge if missing (added after initial render)
+        if (!tab.querySelector('.tab-number')) {
+          const idx = this.sessionOrder.indexOf(id);
+          if (idx >= 0 && idx < 9) {
+            const numSpan = document.createElement('span');
+            numSpan.className = 'tab-number';
+            numSpan.textContent = String(idx + 1);
+            tab.insertBefore(numSpan, tab.firstChild);
+          }
+        }
+
         // Update status indicator
         const statusEl = tab.querySelector('.tab-status');
         if (statusEl && !statusEl.classList.contains(status)) {
@@ -1849,6 +1860,7 @@ class CodemanApp {
       // Reorder to put active tab first
       tabOrder = [this.activeSessionId, ...this.sessionOrder.filter(id => id !== this.activeSessionId)];
     }
+    let _tabIdx = 0;
     for (const id of tabOrder) {
       const session = this.sessions.get(id);
       if (!session) continue; // Skip if session was removed
@@ -1875,6 +1887,7 @@ class CodemanApp {
 
       const endedAttr = session._ended ? ' data-ended="1"' : '';
       parts.push(`<div class="session-tab ${isActive ? 'active' : ''}${alertClass}" data-id="${id}" data-color="${color}"${endedAttr} onclick="app.selectSession('${escapeHtml(id)}')" oncontextmenu="event.preventDefault(); app.startInlineRename('${escapeHtml(id)}')" tabindex="0" role="tab" aria-selected="${isActive ? 'true' : 'false'}" aria-label="${escapeHtml(name)} session" ${session.workingDir ? `title="${escapeHtml(session.workingDir)}"` : ''}>
+          ${_tabIdx < 9 ? '<span class="tab-number">' + (_tabIdx + 1) + '</span>' : ''}
           <span class="tab-status ${status}" aria-hidden="true"></span>
           <span class="tab-info">
             <span class="tab-name-row">
@@ -1888,6 +1901,7 @@ class CodemanApp {
           <span class="tab-gear" onclick="event.stopPropagation(); app.openSessionOptions('${escapeHtml(id)}')" title="Session options" aria-label="Session options" tabindex="0">&#x2699;</span>
           <span class="tab-close" onclick="event.stopPropagation(); app.requestCloseSession('${escapeHtml(id)}')" title="Close session" aria-label="Close session" tabindex="0">&times;</span>
         </div>`);
+      _tabIdx++;
     }
 
     container.innerHTML = parts.join('');
diff --git a/src/web/public/styles.css b/src/web/public/styles.css
index 0827d8f6..8914eb14 100644
--- a/src/web/public/styles.css
+++ b/src/web/public/styles.css
@@ -258,15 +258,16 @@ body {
 }
 
 .session-tab.active {
-  background: rgba(255, 255, 255, 0.04);
-  border-color: var(--glass-border);
-  color: var(--text);
-  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
+  background: rgba(34, 197, 94, 0.15) !important;
+  border: 2px solid #00FF66 !important;
+  color: #fff !important;
+  box-shadow: none !important;
+  outline: none !important;
 }
 
 /* Tab switch feedback: bright green glow on the newly-active tab */
 .session-tab.tab-glow {
-  animation: tab-glow 0.35s ease-out forwards;
+  animation: tab-glow 0.35s ease-out;
 }
 
 @keyframes tab-glow {
@@ -304,13 +305,36 @@ body {
 .session-tab[data-color="pink"] { border-left: 3px solid var(--session-pink); }
 
 /* Active tabs with color get subtle background tint */
-.session-tab.active[data-color="red"] { background: rgba(239, 68, 68, 0.1); }
-.session-tab.active[data-color="orange"] { background: rgba(249, 115, 22, 0.1); }
-.session-tab.active[data-color="yellow"] { background: rgba(234, 179, 8, 0.1); }
-.session-tab.active[data-color="green"] { background: rgba(34, 197, 94, 0.1); }
-.session-tab.active[data-color="blue"] { background: rgba(59, 130, 246, 0.1); }
-.session-tab.active[data-color="purple"] { background: rgba(168, 85, 247, 0.1); }
-.session-tab.active[data-color="pink"] { background: rgba(236, 72, 153, 0.1); }
+.session-tab.active[data-color="red"] { background: rgba(239, 68, 68, 0.15); border-color: rgba(239, 68, 68, 0.5); box-shadow: 0 0 10px rgba(239, 68, 68, 0.3); }
+.session-tab.active[data-color="orange"] { background: rgba(249, 115, 22, 0.15); border-color: rgba(249, 115, 22, 0.5); box-shadow: 0 0 10px rgba(249, 115, 22, 0.3); }
+.session-tab.active[data-color="yellow"] { background: rgba(234, 179, 8, 0.15); border-color: rgba(234, 179, 8, 0.5); box-shadow: 0 0 10px rgba(234, 179, 8, 0.3); }
+.session-tab.active[data-color="green"] { background: rgba(34, 197, 94, 0.15); border-color: rgba(34, 197, 94, 0.5); box-shadow: 0 0 10px rgba(34, 197, 94, 0.3); }
+.session-tab.active[data-color="blue"] { background: rgba(59, 130, 246, 0.15); border-color: rgba(59, 130, 246, 0.5); box-shadow: 0 0 10px rgba(59, 130, 246, 0.3); }
+.session-tab.active[data-color="purple"] { background: rgba(168, 85, 247, 0.15); border-color: rgba(168, 85, 247, 0.5); box-shadow: 0 0 10px rgba(168, 85, 247, 0.3); }
+.session-tab.active[data-color="pink"] { background: rgba(236, 72, 153, 0.15); border-color: rgba(236, 72, 153, 0.5); box-shadow: 0 0 10px rgba(236, 72, 153, 0.3); }
+
+/* Tab number indicator (Alt+N shortcut hint) */
+.session-tab .tab-number {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 16px;
+  height: 16px;
+  border-radius: 3px;
+  background: rgba(255, 255, 255, 0.15);
+  border: 1px solid rgba(255, 255, 255, 0.35);
+  color: rgba(255, 255, 255, 0.75);
+  font-size: 0.6rem;
+  font-weight: 700;
+  flex-shrink: 0;
+  font-family: monospace;
+}
+
+.session-tab.active .tab-number {
+  background: rgba(0, 255, 102, 0.2) !important;
+  border-color: rgba(0, 255, 102, 0.5) !important;
+  color: #00FF66 !important;
+}
 
 .session-tab .tab-info {
   display: flex;