/* Ayuda breve junto al visor: cerrada al empezar, sin tapar los astros. */
.view-explanation {
  margin-top: 8px;
  border: 1px solid #3d5574;
  border-radius: 12px;
  background: linear-gradient(110deg, #18283d, #201f39);
  color: #e7edfa;
  min-width: 0;
}
.view-explanation > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 13px;
  min-height: 40px;
  box-sizing: border-box;
  color: #dbe7ff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.view-explanation > summary::-webkit-details-marker {
  display: none;
}
.view-explanation > summary > span {
  display: grid;
  place-items: center;
  border: 1px solid #92b4d9;
  border-radius: 50%;
  width: 21px;
  height: 21px;
  color: #b6dcff;
}
.view-explanation > summary::after {
  content: '+';
  margin-left: auto;
  font-size: 19px;
  color: #baa9e3;
}
.view-explanation[open] > summary::after {
  content: '−';
}
.view-explanation summary:focus-visible {
  outline: 3px solid #bcd5ff;
  outline-offset: -3px;
}
.view-explanation-content {
  padding: 0 14px 13px;
  font-size: 13px;
  line-height: 1.55;
}
.view-explanation-content h3 {
  font-size: 16px;
  margin: 4px 0;
  color: #f4d18b;
}
.view-explanation-content p {
  margin: 6px 0;
}
.view-explanation-content details {
  border-top: 1px solid #405069;
  margin-top: 10px;
  padding-top: 8px;
}
.view-explanation-content summary {
  color: #c7b7eb;
  cursor: pointer;
}
.view-explanation-content dl {
  margin: 9px 0;
}
.view-explanation-content dl > div {
  display: grid;
  grid-template-columns: minmax(100px, 1fr) minmax(0, 3fr);
  gap: 10px;
  padding: 5px 0;
}
.view-explanation-content dt {
  color: #a5c9e8;
}
.view-explanation-content dd {
  margin: 0;
  overflow-wrap: anywhere;
}
.view-explanation-source {
  font-size: 11px;
  color: #b9c8df;
}
#observatory-stage.is-immersive .scene-column {
  display: flex;
  flex-direction: column;
}
#observatory-stage.is-immersive .scene-shell {
  flex: 1;
  height: auto;
  min-height: 100px;
}
#observatory-stage.is-immersive .view-explanation {
  flex: 0 0 auto;
  margin: 0;
  border-radius: 0;
  max-height: 25dvh;
  overflow-y: auto;
}
#observatory-stage.is-immersive .view-explanation > summary {
  position: sticky;
  top: 0;
  background: #18283d;
}
@media (max-width: 600px) {
  .view-explanation-content dl > div {
    grid-template-columns: minmax(80px, 1fr) minmax(0, 2fr);
  }
}