.tree {
  padding: 10px 0;
  font-family: inherit;
}

.tree-node {
  margin: 4px 0;
}

.tree-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: #f5f7fa;
  border: 1px solid #e2e6ea;
  border-radius: 8px;
  transition: background .15s ease, border-color .15s ease, transform .15s ease;
}

.tree-row:hover {
  background: #eaf1fb;
  border-color: #b8c9dd;
  transform: translateY(-1px);
}

.tree-row:active {
  transform: translateY(0);
}

.tree-toggle,
.tree-info {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid #c9d2dc;
  background: #fff;
  color: #33506e;
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease,
              color .15s ease, transform .15s ease, scale .1s ease;
}

.tree-toggle {
  transition: transform .25s cubic-bezier(.4, 0, .2, 1),
              scale .1s ease, background .15s ease;
}

.tree-toggle:active {
  scale: .85;
}

.tree-node.collapsed > .tree-row .tree-toggle {
  transform: rotate(-90deg);
}

.tree-node.leaf > .tree-row .tree-toggle {
  visibility: hidden;
}

.tree-node:not(:has(> .tree-children)) > .tree-row .tree-toggle {
  visibility: hidden;
}

.tree-info {
  font-style: italic;
  font-weight: 700;
  font-family: Georgia, serif;
  font-size: 13px;
}

.tree-toggle:hover,
.tree-info:hover {
  background: #8e44ad;
  border-color: #8e44ad;
  color: #fff;
}

.tree-info:hover {
  transform: scale(1.12);
}

.tree-info:active {
  transform: scale(.95);
}

.tree-title {
  font-weight: 600;
  color: #22303d;
}

.tree-children {
  position: relative;
  margin-left: 22px;
  padding-left: 14px;
  overflow: hidden;
  max-height: 1000px;
  opacity: 1;
  transition: max-height .3s cubic-bezier(.4, 0, .2, 1), opacity .25s ease;
}

.tree-children::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 6px;
  border-left: 1px dashed #cfd8e3;
}

.tree-children::after {
  content: "";
  position: absolute;
  left: 4px;
  bottom: 0;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #cfd8e3;
}

.tree-node.collapsed > .tree-children {
  max-height: 0;
  opacity: 0;
}

.tree-modal-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(0, 0, 0, .45);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .2s ease, visibility 0s linear .2s;
}

.tree-modal-overlay.open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity .2s ease, visibility 0s linear 0s;
}

.tree-modal {
  width: 100%;
  max-width: 420px;
  padding: 20px 22px;
  background: #fff;
  color: #1f2933;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .25);
  transform: scale(.95) translateY(6px);
  transition: transform .25s cubic-bezier(.4, 0, .2, 1), background .3s, color .3s;
}

.tree-modal-overlay.open .tree-modal {
  transform: scale(1) translateY(0);
}

.tree-modal-title {
  margin-bottom: 10px;
  font-size: 1.1em;
  font-weight: 700;
  line-height: 1.3;
}

.tree-modal-text {
  margin-bottom: 16px;
  line-height: 1.5;
  white-space: pre-line;
}

.tree-modal-close {
  display: block;
  margin-left: auto;
  padding: 8px 16px;
  border: none;
  border-radius: 8px;
  background: #8e44ad;
  color: #fff;
  cursor: pointer;
  transition: background .15s ease, transform .1s ease;
}

.tree-modal-close:hover {
  background: #732d91;
}

.tree-modal-close:active {
  transform: scale(.96);
}

[data-theme="dark"] .tree-row,
.dark-theme .tree-row,
body.dark .tree-row {
  background: #2b2d31;
  border-color: #444;
}

[data-theme="dark"] .tree-row:hover,
.dark-theme .tree-row:hover,
body.dark .tree-row:hover {
  background: #3a3d42;
  border-color: #555;
}

[data-theme="dark"] .tree-title,
.dark-theme .tree-title,
body.dark .tree-title {
  color: #f0f0f0;
}

[data-theme="dark"] .tree-toggle,
[data-theme="dark"] .tree-info,
.dark-theme .tree-toggle,
.dark-theme .tree-info,
body.dark .tree-toggle,
body.dark .tree-info {
  background: #1e1e1e;
  border-color: #555;
  color: #ccc;
}

[data-theme="dark"] .tree-toggle:hover,
[data-theme="dark"] .tree-info:hover,
.dark-theme .tree-toggle:hover,
.dark-theme .tree-info:hover,
body.dark .tree-toggle:hover,
body.dark .tree-info:hover {
  background: #8e44ad;
  border-color: #8e44ad;
  color: #fff;
}

[data-theme="dark"] .tree-children::before,
.dark-theme .tree-children::before,
body.dark .tree-children::before {
  border-left-color: #555;
}

[data-theme="dark"] .tree-children::after,
.dark-theme .tree-children::after,
body.dark .tree-children::after {
  background: #555;
}

[data-theme="dark"] .tree-modal,
.dark-theme .tree-modal,
body.dark .tree-modal {
  background: #222;
  color: #eee;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .8);
}

[data-theme="dark"] .tree-modal-title,
.dark-theme .tree-modal-title,
body.dark .tree-modal-title {
  color: #fff;
}

[data-theme="dark"] .tree-modal-text,
.dark-theme .tree-modal-text,
body.dark .tree-modal-text {
  color: #ccc;
}

@media (prefers-reduced-motion: reduce) {
  .tree-row,
  .tree-toggle,
  .tree-info,
  .tree-children,
  .tree-modal,
  .tree-modal-overlay,
  .tree-modal-close {
    transition: none !important;
  }
}