/* binary_tree.css — BST nodes + edges; the search path lights up, the found node turns green. */
.bt-target { fill: #8aa0b6; font-size: 12px; font-weight: 600; }
.bt-edge { stroke: rgba(148, 163, 184, 0.34); stroke-width: 1.4; }
.bt-node { fill: rgba(255, 255, 255, 0.05); stroke: rgba(148, 163, 184, 0.45); stroke-width: 1.5; }
.bt-vis { fill: rgba(56, 189, 248, 0.18); stroke: #38bdf8; stroke-width: 1.6; }
.bt-cur { fill: rgba(251, 191, 36, 0.3); stroke: #fbbf24; stroke-width: 2.2; }
.bt-found { fill: rgba(52, 211, 153, 0.3); stroke: #34d399; stroke-width: 2.4; }
.bt-v { fill: #eaf6ff; font-size: 13px; font-weight: 700; font-variant-numeric: tabular-nums; font-family: ui-monospace, Menlo, Consolas, monospace; }