.sitemap-tree {
  margin: 0 auto;
  max-width: 1000px;
}

.tree-node {
  margin: 0;
  padding: 0;
  list-style: none;
  position: relative;
}

.tree-node::before {
  content: "";
  position: absolute;
  top: 0;
  left: -20px;
  border-left: 2px solid #cbd5e0; /* soft gray line */
  height: 100%;
}

.tree-node::after {
  content: "";
  position: absolute;
  top: 20px;
  left: -20px;
  border-top: 2px solid #cbd5e0;
  width: 20px;
}

.tree-node:last-child::before {
  height: 20px;
}

.tree-node > .node-content {
  padding: 0.75rem 1rem;
  margin: 0.25rem 0;
  background: #ffffff;
  border-radius: 8px;
  border: 1.5px solid #d1d5db;
  transition: all 0.2s ease;
  cursor: pointer;
  position: relative;
  z-index: 1;
  display: block;
  text-decoration: none;
  color: #1e509c;
  font-weight: 500;
}

.tree-node > .node-content:hover {
  border-color: #1e509c;
  background-color: #f0f4f8;
}

.tree-node > .node-content.link {
  cursor: pointer;
}

.tree-node > .node-content.link:hover {
  text-decoration: none;
}

/* Uniform Styling for All Node Types */
.tree-node.home > .node-content,
.tree-node.about > .node-content,
.tree-node.world > .node-content,
.tree-node.admissions > .node-content,
.tree-node.media > .node-content,
.tree-node.centers > .node-content,
.tree-node.contact > .node-content,
.tree-node.city > .node-content,
.tree-node.branch > .node-content,
.tree-node.leaf > .node-content {
  background: #ffffff;
  color: #1e509c;
  font-weight: 500;
  border: 1.5px solid #d1d5db;
  font-size: 0.95rem;
}

.tree-node.home > .node-content {
  font-weight: 600;
  font-size: 1.1rem;
}

.tree-node > .node-content:hover {
  background: #f0f4f8;
  border-color: #1e509c;
}

/* Link styling */
.node-link {
  display: block;
  text-decoration: none;
  color: inherit;
  width: 100%;
  height: 100%;
}

.node-link:hover {
  text-decoration: none;
  color: inherit;
}

.children {
  margin-left: 40px;
  margin-top: 0.5rem;
}

.root {
  margin-left: 0;
}

.root::before,
.root::after {
  display: none;
}

/* Toggle Button */
.toggle-btn {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: white !important;
  border: none;
  border-radius: 50%;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.toggle-btn:hover {
  background: #cbd5e0;
}

.toggle-btn::after {
  content: "−";
  color: #1e509c;
  font-weight: bold;
  font-size: 14px;
}

.collapsed .toggle-btn::after {
  content: "+";
}

.collapsed .children {
  display: none;
}

.root {
  margin-left: 0;
}

.root::before,
.root::after {
  display: none;
}

@media (max-width: 768px) {
  .container {
    padding: 2rem;
  }

  .children {
    margin-left: 30px;
  }

  .tree-node::before {
    left: -15px;
  }

  .tree-node::after {
    left: -15px;
    width: 15px;
  }
}