.glossary {
  color: purple;
  text-decoration: underline;
  cursor: help;
  position: relative;
  border: none;
  padding: 0;
  background: none;
}

/* .def is always hidden in-place; JS moves it to document.body and styles it inline */
.glossary .def {
  display: none;
}

/* Arrow styles — applied as classes on the detached .def element */
.gldef-above::after,
.gldef-below::after {
  content: '';
  position: absolute;
  left: calc(50% + var(--arrow-offset, 0px));
  transform: translateX(-50%);
  border: 6px solid transparent;
}
.gldef-above::after {
  top: 100%;
  border-top-color: #333;
}
.gldef-below::after {
  bottom: 100%;
  border-bottom-color: #333;
}

/* Reveal.js override: don't clobber slide theme colours or sizing */
.reveal .glossary {
  color: inherit;
  background: none;
  font-size: inherit;
  font-family: inherit;
  text-decoration: underline dotted;
  cursor: help;
  border: none;
  padding: 0;
  position: relative;
}

/* Term highlight on arrival from "Used in" book link */
@keyframes glterm-pulse {
  0%   { background-color: transparent; outline: none; }
  15%  { background-color: #fff3a0; outline: 2px solid #c8940a; outline-offset: 2px; }
  75%  { background-color: #fff3a0; outline: 2px solid #c8940a; outline-offset: 2px; }
  100% { background-color: transparent; outline: none; }
}
.glterm-highlight {
  animation: glterm-pulse 2.5s ease-out forwards;
  border-radius: 3px;
}
.reveal .glterm-highlight {
  animation: glterm-pulse 2.5s ease-out forwards;
}

/* glossary table styles */
.glossary_table td {
  vertical-align: top;
}

.glossary_table td:first-child {
  padding-right: 1em;
}

.glossary_table tr {
  border-bottom: 1px solid #ddd;
}

.glossary_table tr:nth-child(even) {
  background-color: #99999933;
}