#tree-container {
  margin: 20px auto;
  max-width: 800px;
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

#tree-container h3 {
  margin-top: 0;
  margin-bottom: 15px;
  color: #333;
}

table.fancytree-ext-table {
  width: 100%;
  background-color: white;
  border-collapse: collapse;
}

table.fancytree-ext-table thead {
  background-color: #f5f5f5;
  border-bottom: 2px solid #ddd;
}

table.fancytree-ext-table thead th {
  padding: 8px;
  text-align: left;
  font-weight: bold;
}

table.fancytree-ext-table tbody td {
  padding: 4px 8px;
  border-bottom: 1px solid #eee;
}

table.fancytree-ext-table tbody a {
  display: none;
  color: #4CAF50;
  text-decoration: none;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 3px;
}

table.fancytree-ext-table tbody a:hover {
  background-color: #f0f0f0;
  text-decoration: underline;
}

table.fancytree-ext-table tbody tr.fancytree-active {
  background-color: white;
}

table.fancytree-ext-table tbody tr.fancytree-active .fancytree-title {
  background-color: #99defd;
  padding: 2px 4px;
  border-radius: 3px;
}

table.fancytree-ext-table tbody tr.fancytree-active:not(.fancytree-has-children) a.del {
  display: inline;
}

table.fancytree-ext-table tbody tr.fancytree-active:not(.fancytree-folder) a {
  display: inline;
}

table.fancytree-ext-table tbody tr.fancytree-active.fancytree-folder a.mkdir {
  display: inline;
}

table.fancytree-ext-table tbody tr.fancytree-active.fancytree-folder a.load {
  display: inline;
}

.file-reader {
  visibility: hidden;
  position: absolute;
  width: 0;
  height: 0;
}

.tree-instructions {
  background-color: #e7f3ff;
  padding: 10px;
  border-radius: 4px;
  margin-bottom: 15px;
  font-size: 14px;
  color: #333;
}

.tree-instructions ul {
  margin: 5px 0;
  padding-left: 20px;
}

.tree-instructions li {
  margin: 3px 0;
}