:root {
  --docs-tree-surface: var(--bg-secondary, #0f1117);
  --docs-tree-surface-soft: color-mix(in srgb, var(--docs-tree-surface) 88%, white 12%);
  --docs-tree-border: var(--border, rgba(48, 54, 61, 0.6));
  --docs-tree-text: var(--text, #e6edf3);
  --docs-tree-text-strong: #f2f6f9;
  --docs-tree-muted: #a7b0ba;

  --docs-tree-folder: #a9c3b2;
  --docs-tree-folder-active: #c4dccb;
  --docs-tree-folder-glow: color-mix(in srgb, var(--docs-tree-folder-active) 30%, transparent);

  --docs-tree-green: var(--primary, #3fb950);
  --docs-tree-blue: var(--accent, #58a6ff);
  --docs-tree-purple: var(--accent-pink, #bc8cff);
  --docs-tree-amber: #d29922;

  --docs-tree-line-soft: color-mix(in srgb, var(--docs-tree-folder-active) 28%, var(--docs-tree-border));

  --docs-tree-card-bg: linear-gradient(
      180deg,
      color-mix(in srgb, var(--docs-tree-surface) 86%, white 14%) 0%,
      var(--docs-tree-surface) 100%
  );
  --docs-tree-card-bg-hover: linear-gradient(
      180deg,
      color-mix(in srgb, var(--docs-tree-surface-soft) 78%, white 22%) 0%,
      var(--docs-tree-surface) 100%
  );

  --docs-tree-shadow: 0 14px 32px rgba(0, 0, 0, 0.18);
}

html[data-theme="light"] {
  --docs-tree-surface: var(--bg-secondary, #ffffff);
  --docs-tree-surface-soft: #f6f8fa;
  --docs-tree-border: var(--border-primary, rgba(27, 31, 36, 0.12));
  --docs-tree-text: var(--text-primary, #1f2328);
  --docs-tree-text-strong: #304236;
  --docs-tree-muted: var(--text-muted, #57606a);
  --docs-tree-folder: #607969;
  --docs-tree-folder-active: #486857;
  --docs-tree-green: var(--accent-green-bright, #2da44e);
  --docs-tree-blue: var(--accent-blue, #0969da);
  --docs-tree-purple: var(--accent-purple, #8250df);
  --docs-tree-line-soft: color-mix(in srgb, var(--docs-tree-folder-active) 24%, var(--docs-tree-border));
  --docs-tree-card-bg: linear-gradient(180deg,
  color-mix(in srgb, var(--docs-tree-surface-soft) 90%, white 10%) 0%,
  var(--docs-tree-surface) 100%);
  --docs-tree-card-bg-hover: linear-gradient(180deg,
  color-mix(in srgb, var(--docs-tree-surface-soft) 82%, white 18%) 0%,
  color-mix(in srgb, var(--docs-tree-surface) 96%, white 4%) 100%);
  --docs-tree-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
}

.docs-tree {
  display: grid;
  gap: 24px;
}

.docs-tree-section__toggle {
  width: 100%;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 14px;
  padding: 10px 12px;
  color: var(--docs-tree-text);
  text-align: left;
  border-radius: 16px;
  background: color-mix(in srgb, var(--docs-tree-surface) 82%, transparent);
  transition: background 180ms ease,
  box-shadow 180ms ease,
  transform 180ms ease;
}

.docs-tree-section__toggle:hover,
.docs-tree-section__toggle:focus-visible {
  background: linear-gradient(
      90deg,
      color-mix(in srgb, var(--docs-tree-folder-glow) 72%, transparent),
      transparent 68%
  );
}

.docs-tree-section__toggle[aria-expanded="true"] {
  background: linear-gradient(
      90deg,
      color-mix(in srgb, var(--docs-tree-folder-glow) 90%, transparent),
      transparent 74%
  );
}

.docs-tree-section__folder {
  position: relative;
  width: 24px;
  height: 24px;
  color: var(--docs-tree-folder);
  filter: drop-shadow(0 2px 8px color-mix(in srgb, var(--docs-tree-folder) 18%, transparent));
}

.docs-tree-section__toggle[aria-expanded="true"] .docs-tree-section__folder {
  color: var(--docs-tree-folder-active);
  filter: drop-shadow(0 4px 12px color-mix(in srgb, var(--docs-tree-folder-active) 26%, transparent));
}

.docs-tree-section__folder svg {
  position: absolute;
  inset: 0;
  width: 24px;
  height: 24px;
  transition: opacity 180ms ease, transform 220ms ease;
}

.docs-tree-section__folder .folder-open {
  opacity: 0;
  transform: scale(0.92) rotate(-4deg);
}

.docs-tree-section__folder .folder-closed {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.docs-tree-section__toggle[aria-expanded="true"] .folder-open {
  opacity: 1;
  transform: scale(1) rotate(0deg);
}

.docs-tree-section__toggle[aria-expanded="true"] .folder-closed {
  opacity: 0;
  transform: scale(0.92) rotate(4deg);
}

.docs-tree-section__title-wrap {
  display: grid;
  gap: 2px;
}

.docs-tree-section__title {
  font-size: 1.05rem;
  line-height: 1.25;
  color: var(--docs-tree-text-strong);
}

.docs-tree-section__meta {
  color: var(--docs-tree-muted);
  font-size: 0.92rem;
}

.docs-tree-section__chevron {
  width: 20px;
  height: 20px;
  color: var(--docs-tree-muted);
  transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1), color 180ms ease;
  transform-origin: 50% 50%;
}

.docs-tree-section__toggle:hover .docs-tree-section__chevron,
.docs-tree-section__toggle:focus-visible .docs-tree-section__chevron {
  color: var(--docs-tree-text);
}

.docs-tree-section__toggle.is-open .docs-tree-section__chevron,
.docs-tree-section__toggle[aria-expanded="true"] .docs-tree-section__chevron {
  transform: rotate(90deg) translateX(1px);
}

.docs-tree-branch {
  position: relative;
  margin-top: 14px;
  margin-left: 12px;
  padding-left: 30px;
  display: grid;
  gap: 14px;
  height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-6px);
  transition: height 280ms cubic-bezier(0.16, 1, 0.3, 1), opacity 180ms ease, transform 220ms ease;
}

.docs-tree-branch.is-open {
  opacity: 1;
  transform: translateY(0);
}

.docs-tree-branch::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(
      180deg,
      color-mix(in srgb, var(--docs-tree-folder-active) 26%, transparent) 0%,
      var(--docs-tree-line-soft) 22%,
      color-mix(in srgb, var(--docs-tree-line-soft) 72%, transparent) 100%
  );
}

.docs-tree-item {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 16px;
}

.docs-tree-item__rail {
  position: relative;
  min-height: 100%;
}

.docs-tree-item__rail::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 32px;
  width: 30px;
  height: 1px;
  background: color-mix(in srgb, var(--branch-color, var(--docs-tree-green)) 22%, var(--docs-tree-border));
}

.docs-tree-item__node {
  position: absolute;
  top: 24px;
  left: -8px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: radial-gradient(circle at 35% 35%,
  color-mix(in srgb, white 30%, var(--branch-color, var(--docs-tree-green))) 0%,
  var(--branch-color, var(--docs-tree-green)) 65%,
  color-mix(in srgb, black 10%, var(--branch-color, var(--docs-tree-green))) 100%);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--branch-color, var(--docs-tree-green)) 10%, transparent),
  0 4px 10px color-mix(in srgb, var(--branch-color, var(--docs-tree-green)) 18%, transparent);
}

.docs-tree-item__body {
  position: relative;
  border: 1px solid var(--docs-tree-border);
  background: var(--docs-tree-card-bg);
  border-radius: 22px;
  padding: 18px 18px 16px;
  box-shadow: var(--docs-tree-shadow);
  transition: transform 180ms ease,
  box-shadow 180ms ease,
  border-color 180ms ease,
  background 180ms ease;
}

.docs-tree-item:hover .docs-tree-item__body,
.docs-tree-item:focus-within .docs-tree-item__body {
  transform: translateY(-2px);
  background: var(--docs-tree-card-bg-hover);
  border-color: color-mix(in srgb, var(--branch-color, var(--docs-tree-green)) 24%, var(--docs-tree-border));
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.08),
  0 4px 12px color-mix(in srgb, var(--branch-color, var(--docs-tree-green)) 10%, transparent);
}

.docs-tree-item__link {
  position: absolute;
  inset: 0;
  z-index: 3;
}

.docs-tree-item__topline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
  font: 600 11px/1.3 "JetBrains Mono", monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--docs-tree-muted);
}

.docs-tree-item__badge,
.docs-tree-item__audience,
.docs-tree-item__file,
.docs-tree-item__tags span {
  border: 1px solid color-mix(in srgb, var(--docs-tree-border) 82%, white 18%);
  background: linear-gradient(180deg,
  color-mix(in srgb, var(--docs-tree-surface-soft) 92%, white 8%),
  var(--docs-tree-surface-soft));
  border-radius: 999px;
  padding: 6px 10px;
}

.docs-tree-item__badge {
  color: var(--branch-color, var(--docs-tree-green));
  box-shadow: inset 0 1px 0 color-mix(in srgb, white 35%, transparent);
}

.docs-tree-item__content--single {
  display: block;
}

.docs-tree-item__main h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  line-height: 1.25;
  color: var(--docs-tree-text);
  transition: color 180ms ease;
}

.docs-tree-item:hover .docs-tree-item__main h3,
.docs-tree-item:focus-within .docs-tree-item__main h3 {
  color: color-mix(in srgb, var(--branch-color, var(--docs-tree-green)) 55%, var(--docs-tree-text));
}

.docs-tree-item__subtitle {
  margin: 0 0 6px;
  color: var(--docs-tree-muted);
}

.docs-tree-item__summary {
  margin: 0;
  color: var(--docs-tree-muted);
}

.docs-tree-item__tags {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.docs-tree-empty {
  margin-left: 22px;
  padding: 10px 0 2px;
  color: var(--docs-tree-muted);
}

.accent-green {
  --branch-color: var(--docs-tree-green);
}

.accent-blue {
  --branch-color: var(--docs-tree-blue);
}

.accent-purple {
  --branch-color: var(--docs-tree-purple);
}

.accent-amber {
  --branch-color: var(--docs-tree-amber);
}

@media (max-width: 720px) {
  .docs-tree-section__toggle {
    grid-template-columns: 24px minmax(0, 1fr) 18px;
    gap: 10px;
  }

  .docs-tree-branch {
    margin-left: 8px;
    padding-left: 22px;
  }

  .docs-tree-item {
    grid-template-columns: 16px minmax(0, 1fr);
    gap: 12px;
  }

  .docs-tree-item__rail::before {
    left: -22px;
    width: 22px;
  }

  .docs-tree-item__node {
    left: -6px;
  }

  .docs-tree-item__body {
    padding: 16px;
  }
}