/* Collapsible Menu - Yeni Stil */
.collapsible-menu {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
  max-width: 100%;
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  margin-bottom: 20px;
  overflow: hidden;
}

/* Menü öğeleri */
.collapsible-menu .menu-item {
  position: relative;
  border-bottom: 1px solid #f0f0f0;
  transition: background-color 0.3s ease;
}

.collapsible-menu .menu-item:last-child {
  border-bottom: none;
}

/* Menü öğesi içeriği */
.menu-item-content {
  display: flex;
  align-items: center;
  position: relative;
}

/* Menü bağlantısı */
.collapsible-menu .menu-link {
  flex: 1;
  display: block;
  padding: 14px 16px;
  color: #333;
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s ease;
}

.collapsible-menu .menu-item:hover > .menu-item-content > .menu-link {
  color: #0073aa;
}

/* Aktif menü öğesi */
.collapsible-menu .current-menu-item > .menu-item-content > .menu-link {
  color: #0073aa;
  font-weight: 600;
}

/* Toggle butonu */
.toggle-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  position: relative;
}

.toggle-btn:before {
  content: "+";
  font-size: 20px;
  color: #777;
  transition: transform 0.3s ease, color 0.3s ease;
}

.toggle-btn.active:before {
  content: "−";
  color: #0073aa;
}

/* Alt menü */
.collapsible-menu .sub-menu {
  display: none;
  background-color: #f9f9f9;
  padding: 5px 0;
}

.collapsible-menu .sub-menu.active {
  display: block;
}

/* Alt menü öğeleri */
.collapsible-menu .sub-menu .menu-item {
  border-bottom: none;
}

.collapsible-menu .sub-menu .menu-link {
  padding: 10px 16px 10px 30px;
  font-size: 14px;
  color: #555;
}

/* İkinci seviye alt menüler */
.collapsible-