diff --git a/modules/turnero/module.php b/modules/turnero/module.php
index 5273f7c..74f064d 100644
--- a/modules/turnero/module.php
+++ b/modules/turnero/module.php
@@ -1,22 +1,18 @@
 <?php
 /**
  * Descriptor del módulo Turnero — Oleada 1
- * Los links visibles se filtran según el rol del usuario.
+ * Links filtrados por rol con sub-acordeones para recepción y muestras.
  */
 
-$_trRole = $_SESSION['admin_user']['role'] ?? 'admin';
-$_trAdminRoles = ['superadmin', 'admin', 'supervisor'];
-$_trIsAdmin    = in_array($_trRole, $_trAdminRoles, true);
-$_trIsRecep    = $_trRole === 'recepcionista';
-$_trIsBacte    = $_trRole === 'bacteriologo';
+$_trRole    = $_SESSION['admin_user']['role'] ?? 'admin';
+$_trIsRecep = $_trRole === 'recepcionista';
+$_trIsBacte = $_trRole === 'bacteriologo';
 
 try {
     $_trPdo = Database::getInstance()->getConnection();
-
     $_trDesks = $_trPdo->query(
         "SELECT id, nombre FROM turnero_lugares WHERE activo=1 AND tipo='recepcion' ORDER BY sort_order"
     )->fetchAll(PDO::FETCH_ASSOC);
-
     $_trMuestras = $_trPdo->query(
         "SELECT id, nombre FROM turnero_lugares WHERE activo=1 AND tipo='muestras' ORDER BY sort_order"
     )->fetchAll(PDO::FETCH_ASSOC);
@@ -25,60 +21,67 @@ try {
     $_trMuestras = [];
 }
 
+// Sub-links de recepción
+$_trRecepChildren = [];
+foreach ($_trDesks as $_d) {
+    $_trRecepChildren[] = [
+        'name'  => $_d['nombre'],
+        'icon'  => 'fas fa-chair',
+        'route' => '/erp.php?m=turnero&v=recepcion&desk_id=' . (int)$_d['id'],
+    ];
+}
+if (empty($_trRecepChildren)) {
+    $_trRecepChildren[] = ['name' => 'Recepción', 'icon' => 'fas fa-chair', 'route' => '/erp.php?m=turnero&v=recepcion'];
+}
+
+// Sub-links de muestras
+$_trMuestrasChildren = [];
+foreach ($_trMuestras as $_m) {
+    $_trMuestrasChildren[] = [
+        'name'  => $_m['nombre'],
+        'icon'  => 'fas fa-flask',
+        'route' => '/erp.php?m=turnero&v=lugar&lugar_id=' . (int)$_m['id'],
+    ];
+}
+
 $_trLinks = [];
 
-// ── Recepcionista: solo sus escritorios + pantalla TV ─────────
+// ── Recepcionista ─────────────────────────────────────────────
 if ($_trIsRecep) {
     $_trLinks[] = ['name' => 'Pantalla TV', 'icon' => 'fas fa-tv', 'route' => '/erp.php?m=turnero&v=display_global'];
-    if (!empty($_trDesks)) {
-        foreach ($_trDesks as $_d) {
-            $_trLinks[] = [
-                'name'  => $_d['nombre'],
-                'icon'  => 'fas fa-concierge-bell',
-                'route' => '/erp.php?m=turnero&v=recepcion&desk_id=' . (int)$_d['id'],
-            ];
-        }
+    if (count($_trRecepChildren) > 1) {
+        $_trLinks[] = ['name' => 'Recepción', 'icon' => 'fas fa-concierge-bell', 'route' => null, 'children' => $_trRecepChildren];
     } else {
-        $_trLinks[] = ['name' => 'Recepción', 'icon' => 'fas fa-concierge-bell', 'route' => '/erp.php?m=turnero&v=recepcion'];
+        $_trLinks[] = array_merge($_trRecepChildren[0], ['icon' => 'fas fa-concierge-bell']);
     }
 
-// ── Bacteriólogo: dashboard, historial, TV + sus estaciones ──
+// ── Bacteriólogo ──────────────────────────────────────────────
 } elseif ($_trIsBacte) {
     $_trLinks[] = ['name' => 'Dashboard',   'icon' => 'fas fa-tachometer-alt', 'route' => '/erp.php?m=turnero&v=dashboard'];
     $_trLinks[] = ['name' => 'Historial',   'icon' => 'fas fa-history',        'route' => '/erp.php?m=turnero&v=historial'];
     $_trLinks[] = ['name' => 'Pantalla TV', 'icon' => 'fas fa-tv',             'route' => '/erp.php?m=turnero&v=display_global'];
-    foreach ($_trMuestras as $_m) {
-        $_trLinks[] = [
-            'name'  => $_m['nombre'],
-            'icon'  => 'fas fa-flask',
-            'route' => '/erp.php?m=turnero&v=lugar&lugar_id=' . (int)$_m['id'],
-        ];
+    if (count($_trMuestrasChildren) > 1) {
+        $_trLinks[] = ['name' => 'Estaciones', 'icon' => 'fas fa-flask', 'route' => null, 'children' => $_trMuestrasChildren];
+    } elseif (!empty($_trMuestrasChildren)) {
+        $_trLinks[] = $_trMuestrasChildren[0];
     }
 
-// ── Admin / Supervisor / otros: acceso completo ───────────────
+// ── Admin / Supervisor / otros ────────────────────────────────
 } else {
-    $_trLinks[] = ['name' => 'Dashboard',          'icon' => 'fas fa-tachometer-alt', 'route' => '/erp.php?m=turnero&v=dashboard'];
-    $_trLinks[] = ['name' => 'Historial',          'icon' => 'fas fa-history',        'route' => '/erp.php?m=turnero&v=historial'];
-    $_trLinks[] = ['name' => 'Configuración',      'icon' => 'fas fa-sliders-h',      'route' => '/erp.php?m=turnero&v=configuracion'];
-    $_trLinks[] = ['name' => 'Kiosko',             'icon' => 'fas fa-desktop',        'route' => '/erp.php?m=turnero&v=kiosko'];
-    $_trLinks[] = ['name' => 'Pantalla TV Global', 'icon' => 'fas fa-th-large',       'route' => '/erp.php?m=turnero&v=display_global'];
-    if (!empty($_trDesks)) {
-        foreach ($_trDesks as $_d) {
-            $_trLinks[] = [
-                'name'  => $_d['nombre'],
-                'icon'  => 'fas fa-concierge-bell',
-                'route' => '/erp.php?m=turnero&v=recepcion&desk_id=' . (int)$_d['id'],
-            ];
-        }
-    } else {
-        $_trLinks[] = ['name' => 'Recepción', 'icon' => 'fas fa-concierge-bell', 'route' => '/erp.php?m=turnero&v=recepcion'];
+    $_trLinks[] = ['name' => 'Dashboard',     'icon' => 'fas fa-tachometer-alt', 'route' => '/erp.php?m=turnero&v=dashboard'];
+    $_trLinks[] = ['name' => 'Historial',     'icon' => 'fas fa-history',        'route' => '/erp.php?m=turnero&v=historial'];
+    $_trLinks[] = ['name' => 'Configuración', 'icon' => 'fas fa-sliders-h',      'route' => '/erp.php?m=turnero&v=configuracion'];
+    $_trLinks[] = ['name' => 'Kiosko',        'icon' => 'fas fa-desktop',        'route' => '/erp.php?m=turnero&v=kiosko'];
+    $_trLinks[] = ['name' => 'Pantalla TV',   'icon' => 'fas fa-tv',             'route' => '/erp.php?m=turnero&v=display_global'];
+    if (count($_trRecepChildren) > 1) {
+        $_trLinks[] = ['name' => 'Recepción', 'icon' => 'fas fa-concierge-bell', 'route' => null, 'children' => $_trRecepChildren];
+    } elseif (!empty($_trRecepChildren)) {
+        $_trLinks[] = array_merge($_trRecepChildren[0], ['icon' => 'fas fa-concierge-bell']);
     }
-    foreach ($_trMuestras as $_m) {
-        $_trLinks[] = [
-            'name'  => $_m['nombre'],
-            'icon'  => 'fas fa-flask',
-            'route' => '/erp.php?m=turnero&v=lugar&lugar_id=' . (int)$_m['id'],
-        ];
+    if (count($_trMuestrasChildren) > 1) {
+        $_trLinks[] = ['name' => 'Estaciones', 'icon' => 'fas fa-flask', 'route' => null, 'children' => $_trMuestrasChildren];
+    } elseif (!empty($_trMuestrasChildren)) {
+        $_trLinks[] = $_trMuestrasChildren[0];
     }
 }
 
diff --git a/shared/components/sidebar.php b/shared/components/sidebar.php
index 564b60c..f6e8816 100644
--- a/shared/components/sidebar.php
+++ b/shared/components/sidebar.php
@@ -171,15 +171,43 @@ if (class_exists('ModuleRegistry', false)) {
 <?php   foreach ($catData['modules'] as $slug => $mod):
             $links = $mod['links'] ?? [];
             if (!empty($links)):
-                foreach ($links as $lnk):
-                    $href   = $_base . $lnk['route'];
-                    $active = $_isActive($lnk['route']);
+                foreach ($links as $lnkIdx => $lnk):
+                    $children = $lnk['children'] ?? [];
+                    if (!empty($children)):
+                        // Sub-acordeón para links con hijos
+                        $subId    = $catId . '-sub-' . $slug . '-' . $lnkIdx;
+                        $hasActive = false;
+                        foreach ($children as $ch) { if ($_isActive($ch['route']) !== '') { $hasActive = true; break; } }
+?>
+                <li class="sb-sub-header<?= $hasActive ? ' has-active' : '' ?>"
+                    onclick="sbToggleSub('<?= $subId ?>',this,event)">
+                    <i class="<?= htmlspecialchars($lnk['icon'], ENT_QUOTES, 'UTF-8') ?>"></i>
+                    <span><?= htmlspecialchars($lnk['name'], ENT_QUOTES, 'UTF-8') ?></span>
+                    <i class="fas fa-chevron-down sb-sub-chev"></i>
+                </li>
+                <li class="sb-sub-group<?= $hasActive ? '' : ' collapsed' ?>" id="<?= $subId ?>">
+                    <ul>
+<?php           foreach ($children as $ch):
+                    $href   = $_base . $ch['route'];
+                    $active = $_isActive($ch['route']);
+?>
+                        <li><a href="<?= htmlspecialchars($href, ENT_QUOTES, 'UTF-8') ?>"
+                               class="nav-link nav-link-sub<?= $active ?>">
+                            <i class="<?= htmlspecialchars($ch['icon'], ENT_QUOTES, 'UTF-8') ?>"></i>
+                            <?= htmlspecialchars($ch['name'], ENT_QUOTES, 'UTF-8') ?></a></li>
+<?php           endforeach; ?>
+                    </ul>
+                </li>
+<?php           else:
+                    $href   = $_base . ($lnk['route'] ?? '');
+                    $active = isset($lnk['route']) ? $_isActive($lnk['route']) : '';
 ?>
                 <li><a href="<?= htmlspecialchars($href, ENT_QUOTES, 'UTF-8') ?>"
                        class="nav-link<?= $active ?>">
                     <i class="<?= htmlspecialchars($lnk['icon'], ENT_QUOTES, 'UTF-8') ?>"></i>
                     <?= htmlspecialchars($lnk['name'], ENT_QUOTES, 'UTF-8') ?></a></li>
-<?php       endforeach;
+<?php           endif;
+                endforeach;
             else:
                 $route  = $mod['route'] ?? '';
                 $href   = $route ? $_base . $route : '#';
@@ -354,6 +382,25 @@ if (class_exists('ModuleRegistry', false)) {
 .sb-group { overflow: hidden; transition: max-height .28s ease, opacity .2s ease; }
 .sb-group > ul { list-style: none; padding: 0 0 4px; margin: 0; }
 .sb-group.collapsed { max-height: 0 !important; opacity: 0; pointer-events: none; }
+
+/* Sub-acordeón dentro de un módulo */
+.sb-sub-header {
+    display: flex; align-items: center; gap: 8px;
+    padding: 7px 16px 7px 20px;
+    cursor: pointer; user-select: none;
+    color: rgba(255,255,255,.75);
+    font-size: .84rem;
+    border-radius: 6px; margin: 1px 6px;
+    transition: background .15s, color .15s;
+}
+.sb-sub-header:hover, .sb-sub-header.has-active { color: #fff; background: rgba(255,255,255,.1); }
+.sb-sub-header span { flex: 1; }
+.sb-sub-chev { font-size: .6rem; opacity: .7; transition: transform .22s ease; flex-shrink: 0; }
+.sb-sub-header.collapsed .sb-sub-chev { transform: rotate(-90deg); }
+.sb-sub-group { overflow: hidden; transition: max-height .25s ease, opacity .2s ease; }
+.sb-sub-group > ul { list-style: none; padding: 0; margin: 0; }
+.sb-sub-group.collapsed { max-height: 0 !important; opacity: 0; pointer-events: none; }
+.nav-link-sub { padding-left: 36px !important; font-size: .82rem !important; }
 </style>
 
 <script>
@@ -380,6 +427,28 @@ if (class_exists('ModuleRegistry', false)) {
         }
     }
 
+    window.sbToggleSub = function(subId, headerEl, ev) {
+        if (ev) { ev.preventDefault(); ev.stopPropagation(); }
+        var group = document.getElementById(subId);
+        if (!group) return;
+        var collapsed = group.classList.contains('collapsed');
+        if (collapsed) {
+            group.classList.remove('collapsed');
+            group.style.maxHeight = group.scrollHeight + 'px';
+            group.style.opacity   = '1';
+            headerEl.classList.remove('collapsed');
+        } else {
+            group.style.maxHeight = group.scrollHeight + 'px';
+            group.style.opacity   = '1';
+            requestAnimationFrame(function(){
+                group.classList.add('collapsed');
+                headerEl.classList.add('collapsed');
+                group.style.maxHeight = '0';
+                group.style.opacity   = '0';
+            });
+        }
+    };
+
     window.sbToggleCat = function(catId, sectionEl, ev) {
         if (ev) { ev.preventDefault(); ev.stopPropagation(); }
         var nav = document.getElementById('erp-sidebar');
@@ -466,6 +535,14 @@ if (class_exists('ModuleRegistry', false)) {
         style.textContent = '.sb-group { transition: none !important; }';
         document.head.appendChild(style);
 
+        // Inicializar sub-grupos
+        document.querySelectorAll('.sb-sub-group').forEach(function(sg) {
+            if (!sg.classList.contains('collapsed')) {
+                sg.style.maxHeight = sg.scrollHeight + 'px';
+                sg.style.opacity   = '1';
+            }
+        });
+
         document.querySelectorAll('.sb-group').forEach(function(group) {
             var catId   = group.id;
             var section = document.querySelector('[data-cat="' + catId + '"]');