html,
body {
  height: 100%;
  margin: 0;
}

svg {
  display: block;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  width: 100%;
}

svg {
  border: 1px solid black;
}

line {
  stroke: #aaa;
}

circle {
  fill: magenta;
  stroke: #fff;
  stroke-width: 4.3px;
}

text {
  font-family: Arial, sans-serif;
  font-size: 23px;
  pointer-events: none;
}

.ui-bar {
  position: fixed;
  left: 10px;
  top: 10px;
  display: inline-flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid #ddd;
  padding: 8px 10px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  font: 14px system-ui, sans-serif;
  z-index: 20;
}

.ui-bar input[type="text"],
.ui-bar input[type="number"] {
  padding: 6px 8px;
  border: 1px solid #ccc;
  border-radius: 6px;
}

.ui-bar button {
  padding: 6px 10px;
  border: 1px solid #bbb;
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
}

#khopMenu {
  position: fixed;
  z-index: 25;
  display: none;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 10px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.14);
  width: 300px;
  font: 14px system-ui, sans-serif;
}

#khopMenu .title {
  font-weight: 600;
  margin-bottom: 6px;
}

#khopMenu .row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 0px 0px;
}

#khopMenu button {
  padding: 6px 10px;
  border: 1px solid #bbb;
  background: #fff;
  border-radius: 6px;
  cursor: pointer;
}

.node.dim {
  opacity: 0.15;
}

.label.dim {
  opacity: 0.1;
}

.link.dim {
  opacity: 0.05;
}

.node.match {
  stroke: #111;
  stroke-width: 2.5px;
}

.label.match {
  font-weight: 700;
}

.link.match {
  stroke-opacity: 0.9;
}

.hidden {
  display: none;
}