body {
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
}
.tree ul {
    list-style-type: none;
    position: relative;
    padding-left: 2rem;
}
.tree ul ul::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0.75rem;
    border-left: 1px solid #d1d5db;
    height: 100%;
}
.dark .tree ul ul::before {
    border-left-color: #4b5563;
}
.node {
    margin: 0.75rem 0;
}
.node-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: #ffffff;
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: background-color 0.3s ease;
}
.dark .node-content {
    background: #2d3748;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}
.node-title {
    font-weight: 600;
    font-size: 1rem;
    color: #1f2937;
}
.dark .node-title {
    color: #e5e7eb;
}
.node-description {
    font-size: 0.875rem;
    color: #6b7280;
}
.dark .node-description {
    color: #9ca3af;
}
.hidden {
    display: none;
}
.search-highlight {
    background-color: #fef9c3;
    color: #1f2937;
}
.dark .search-highlight {
    background-color: #4b5563;
    color: #e5e7eb;
}
.node-actions {
    display: none;
    gap: 0.5rem;
    margin-left: auto;
}
.node:hover .node-actions {
    display: flex;
}
.node-actions button {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    transition: background-color 0.2s ease, transform 0.2s ease;
}
.node-actions button:hover {
    transform: translateY(-1px);
}
.tree-container {
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}
.dark .tree-container {
    border-color: #4b5563;
    background-color: #2d3748;
}