/* Los videotutoriales: la galería, el recuadro «En vídeo», la página de cada
 * vídeo, el reproductor emergente y la cabecera de la portada.
 *
 * El HTML lo escribe `web/hooks/videos.py` y el reproductor
 * `javascripts/videos.js`. Los colores son los de `didacta.css`: el verde de
 * la casa para lo que se puede pulsar, y el negro del vídeo solo donde hay
 * un vídeo. */

:root {
  --dv-rule: var(--didacta-rule);
  --dv-card: #ffffff;
  --dv-soft: #f3f7f1;
  --dv-soft-2: #e4eee0;
  --dv-ink-soft: #346e3438;
  --dv-accent: var(--didacta-green-dark);
}

[data-md-color-scheme="slate"] {
  --dv-rule: #2f343c;
  --dv-card: #1e2229;
  --dv-soft: #1f2a22;
  --dv-soft-2: #26352a;
  --dv-ink-soft: #8ccf8c33;
  --dv-accent: #8ccf8c;
}

/* ---------------------------------------------------------- piezas comunes */

.dv-code {
  display: inline-block;
  padding: 0.05rem 0.42rem;
  border-radius: 0.3rem;
  background: var(--didacta-green-dark);
  color: #ffffff;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.5;
}

.dv-time {
  position: absolute;
  right: 0.45rem;
  bottom: 0.45rem;
  padding: 0.05rem 0.38rem;
  border-radius: 0.25rem;
  background: #14171cc7;
  color: #ffffff;
  font-size: 0.6rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

/* El botón de reproducir: redondo, verde, y a la vista en cuanto el puntero
 * pasa por encima. En una pantalla táctil no hay «por encima», así que se ve
 * siempre. */
.dv-play {
  position: absolute;
  inset: 0;
  width: 3rem;
  height: 3rem;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #346e34eb;
  box-shadow: 0 6px 22px #0000004d;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity 0.18s, transform 0.18s;
}

.dv-play svg {
  width: 1.35rem;
  height: 1.35rem;
  margin-left: 0.12rem;
  fill: #ffffff;
}

@media (hover: none) {
  .dv-play {
    opacity: 0.95;
    transform: none;
  }
}

/* ------------------------------------------------------------- galería -- */

.md-typeset .dv-doors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.8rem;
  margin: 1.2rem 0 0.6rem;
}

.md-typeset .dv-door {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--dv-rule);
  border-radius: 0.6rem;
  background: var(--dv-card);
  color: var(--md-default-fg-color);
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}

.md-typeset .dv-door:hover,
.md-typeset .dv-door:focus-visible {
  border-color: var(--didacta-green);
  transform: translateY(-2px);
  box-shadow: var(--md-shadow-z2);
  color: var(--md-default-fg-color);
}

.md-typeset .dv-door svg {
  width: 1.5rem;
  height: 1.5rem;
  margin-bottom: 0.25rem;
  fill: none;
  stroke: var(--dv-accent);
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.md-typeset .dv-door strong {
  font-size: 0.8rem;
}

.md-typeset .dv-door span {
  font-size: 0.68rem;
  line-height: 1.45;
  color: var(--md-default-fg-color--light);
}

.md-typeset .dv-count,
.md-typeset .dv-lead {
  font-size: 0.74rem;
  color: var(--md-default-fg-color--light);
}

.md-typeset .dv-lead--small {
  font-size: 0.68rem;
}

.md-typeset .dv-lead em {
  color: var(--md-default-fg-color);
  font-style: normal;
  font-weight: 600;
}

/* La rejilla: tres o cuatro por fila en un portátil, una en el móvil. Con
 * `:not([hidden])` porque así pone Material las listas en `flow-root`, y sin
 * él esa regla gana. */
.md-typeset .dv-grid:not([hidden]) {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(13.5rem, 1fr));
  gap: 1.1rem;
  margin: 1rem 0 2.2rem;
  padding: 0;
  list-style: none;
}

.md-typeset ol.dv-grid > li {
  margin: 0;
  display: flex;
}

.md-typeset ol.dv-grid > li > .dv-card {
  flex: 1;
}

.md-typeset .dv-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--dv-rule);
  border-radius: 0.6rem;
  background: var(--dv-card);
  color: var(--md-default-fg-color);
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}

.md-typeset a.dv-card:hover,
.md-typeset a.dv-card:focus-visible {
  border-color: var(--didacta-green);
  transform: translateY(-3px);
  box-shadow: var(--md-shadow-z2);
  color: var(--md-default-fg-color);
}

.md-typeset a.dv-card:hover .dv-play,
.md-typeset a.dv-card:focus-visible .dv-play,
.md-typeset a.dv-mini:hover .dv-play,
.md-typeset a.dv-mini:focus-visible .dv-play {
  opacity: 1;
  transform: scale(1);
}

.md-typeset .dv-card__thumb {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--dv-soft);
  border-bottom: 1px solid var(--dv-rule);
}

.md-typeset .dv-card__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  object-fit: cover;
  transition: transform 0.35s;
}

.md-typeset a.dv-card:hover .dv-card__thumb img {
  transform: scale(1.035);
}

.md-typeset .dv-card__thumb .dv-code {
  position: absolute;
  left: 0.45rem;
  top: 0.45rem;
}

.md-typeset .dv-card__body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.65rem 0.8rem 0.8rem;
}

.md-typeset .dv-card__title {
  font-size: 0.8rem;
  font-weight: 700;
  line-height: 1.3;
}

.md-typeset .dv-card__text {
  display: -webkit-box;
  overflow: hidden;
  font-size: 0.66rem;
  line-height: 1.5;
  color: var(--md-default-fg-color--light);
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.md-typeset .dv-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.1rem;
}

.md-typeset .dv-tag {
  padding: 0 0.45rem;
  border: 1px solid var(--md-default-fg-color--lighter);
  border-radius: 1rem;
  font-size: 0.56rem;
  font-weight: 600;
  line-height: 1.6;
  color: var(--md-default-fg-color--light);
}

.md-typeset .dv-tag--completa {
  border-color: #2d5fa0;
  color: #2d5fa0;
}

.md-typeset .dv-tag--opcional {
  border-color: #9a6a1c;
  color: #9a6a1c;
}

[data-md-color-scheme="slate"] .md-typeset .dv-tag--completa {
  border-color: #8fb2e3;
  color: #8fb2e3;
}

[data-md-color-scheme="slate"] .md-typeset .dv-tag--opcional {
  border-color: #e0b56a;
  color: #e0b56a;
}

/* Los que aún no están: la misma tarjeta, con el código en grande donde irá
 * la imagen, y un enlace a lo que ya hay escrito sobre lo mismo. */
.md-typeset .dv-card--pronto .dv-card__thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--dv-soft), var(--dv-soft-2));
}

.md-typeset .dv-card__big {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--dv-ink-soft);
}

.md-typeset .dv-card__soon {
  position: absolute;
  left: 0.45rem;
  top: 0.45rem;
  padding: 0.05rem 0.45rem;
  border-radius: 0.3rem;
  background: var(--dv-card);
  color: var(--md-default-fg-color--light);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.md-typeset .dv-card--pronto .dv-card__title {
  color: var(--md-default-fg-color--light);
}

.md-typeset .dv-card__read {
  margin-top: auto;
  padding-top: 0.25rem;
  font-size: 0.64rem;
  font-weight: 600;
}

/* El mapa de las rutas. */
.md-typeset .dv-routes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14.5rem, 1fr));
  gap: 0.7rem;
  margin: 1rem 0 1.6rem;
}

.md-typeset .dv-route {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--dv-rule);
  border-radius: 0.6rem;
  background: var(--dv-card);
  color: var(--md-default-fg-color);
  transition: border-color 0.15s;
}

.md-typeset .dv-route:hover,
.md-typeset .dv-route:focus-visible {
  border-color: var(--didacta-green);
  color: var(--md-default-fg-color);
}

.md-typeset .dv-route__letter {
  flex: none;
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 0.45rem;
  background: var(--didacta-green-dark);
  color: #ffffff;
  font-weight: 800;
}

.md-typeset .dv-route__body {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}

.md-typeset .dv-route__body strong {
  font-size: 0.74rem;
  line-height: 1.3;
}

.md-typeset .dv-route__body span {
  font-size: 0.64rem;
  line-height: 1.4;
  color: var(--md-default-fg-color--light);
}

.md-typeset .dv-route__body small {
  font-size: 0.58rem;
  color: var(--md-default-fg-color--lighter);
}

/* Por perfil. */
.md-typeset .dv-profiles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: 0.7rem;
  margin: 1rem 0 0.8rem;
}

.md-typeset .dv-profile {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0.7rem 0.9rem;
  border-left: 3px solid var(--didacta-green);
  border-radius: 0 0.5rem 0.5rem 0;
  background: var(--dv-soft);
}

.md-typeset .dv-profile strong {
  font-size: 0.74rem;
}

.md-typeset .dv-profile__mira {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.md-typeset .dv-profile small {
  font-size: 0.62rem;
  color: var(--md-default-fg-color--light);
}

/* Las fichas con el código de un vídeo, en el índice por pregunta. */
.md-typeset .dv-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.18rem;
  margin: 0.08rem 0.1rem;
  padding: 0.02rem 0.45rem;
  border: 1px solid var(--didacta-green-dark);
  border-radius: 1rem;
  background: var(--didacta-green-dark);
  color: #ffffff;
  font-size: 0.6rem;
  font-weight: 700;
  line-height: 1.6;
  white-space: nowrap;
}

.md-typeset .dv-chip:hover,
.md-typeset .dv-chip:focus-visible {
  background: var(--didacta-green);
  border-color: var(--didacta-green);
  color: #ffffff;
}

.md-typeset .dv-chip svg {
  width: 0.62rem;
  height: 0.62rem;
  fill: currentcolor;
}

.md-typeset .dv-chip--pronto,
.md-typeset .dv-chip--texto {
  border-color: var(--md-default-fg-color--lighter);
  background: transparent;
  color: var(--md-default-fg-color--light);
  font-weight: 600;
}

.md-typeset .dv-chip--pronto:hover,
.md-typeset .dv-chip--pronto:focus-visible {
  background: transparent;
  border-color: var(--md-default-fg-color--light);
  color: var(--md-default-fg-color);
}

.md-typeset .dv-chip--ruta {
  border-color: var(--dv-accent);
  background: transparent;
  color: var(--dv-accent);
}

.md-typeset .dv-chip--ruta:hover,
.md-typeset .dv-chip--ruta:focus-visible {
  background: var(--dv-accent);
  border-color: var(--dv-accent);
  color: var(--md-default-bg-color);
}

/* ------------------------------------------ en las páginas de la ayuda -- */

.md-typeset .dv-box {
  margin: 0 0 1.4rem;
  padding: 0.55rem 0.7rem 0.65rem;
  border: 1px solid var(--dv-rule);
  border-radius: 0.6rem;
  background: linear-gradient(180deg, var(--dv-soft), transparent 85%);
}

.md-typeset .dv-box__label {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: 0.4rem;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dv-accent);
}

.md-typeset .dv-box__label svg {
  width: 0.75rem;
  height: 0.75rem;
  fill: currentcolor;
}

.md-typeset .dv-box__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
}

.md-typeset .dv-mini {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  max-width: 24rem;
  padding: 0.3rem 0.5rem 0.3rem 0.3rem;
  border-radius: 0.5rem;
  color: var(--md-default-fg-color);
  transition: background 0.15s;
}

.md-typeset .dv-mini:hover,
.md-typeset .dv-mini:focus-visible {
  background: var(--md-accent-fg-color--transparent);
  color: var(--md-default-fg-color);
}

.md-typeset .dv-mini__thumb {
  position: relative;
  flex: none;
  width: 7.5rem;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border: 1px solid var(--dv-rule);
  border-radius: 0.35rem;
}

.md-typeset .dv-mini__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  margin: 0;
  object-fit: cover;
}

.md-typeset .dv-mini .dv-play {
  width: 1.8rem;
  height: 1.8rem;
  opacity: 0.92;
  transform: none;
}

.md-typeset .dv-mini .dv-play svg {
  width: 0.85rem;
  height: 0.85rem;
}

.md-typeset .dv-mini__body {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.15rem;
  min-width: 0;
}

.md-typeset .dv-mini__body strong {
  font-size: 0.72rem;
  line-height: 1.3;
}

.md-typeset .dv-mini__body small {
  font-size: 0.62rem;
  color: var(--md-default-fg-color--light);
  font-variant-numeric: tabular-nums;
}

.md-typeset .dv-inline {
  margin: -0.2rem 0 0.9rem;
}

.md-typeset .dv-inline a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-right: 0.4rem;
  padding: 0.2rem 0.65rem 0.2rem 0.25rem;
  border-radius: 1rem;
  background: var(--md-accent-fg-color--transparent);
  font-size: 0.68rem;
}

.md-typeset .dv-inline svg {
  flex: none;
  width: 1.1rem;
  height: 1.1rem;
  padding: 0.22rem 0.18rem 0.22rem 0.26rem;
  border-radius: 50%;
  background: var(--didacta-green-dark);
  fill: #ffffff;
}

/* ---------------------------------------------- la página de un vídeo --- */

.md-typeset .dv-page__meta {
  margin-top: -0.6rem;
  font-size: 0.7rem;
  color: var(--md-default-fg-color--light);
}

.md-typeset .dv-player {
  margin: 1rem 0 1.4rem;
  overflow: hidden;
  border-radius: 0.6rem;
  background: #000000;
  box-shadow: 0 2px 6px #1c1f2614, 0 18px 50px #1c1f2626;
}

.md-typeset .dv-player video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000000;
}

.md-typeset ol.dv-chapters:not([hidden]) {
  margin: 0.6rem 0 1.4rem;
  padding: 0;
  list-style: none;
  columns: 2 16rem;
  column-gap: 1.6rem;
}

.md-typeset ol.dv-chapters li {
  margin: 0 0 0.25rem;
  break-inside: avoid;
}

.md-typeset ol.dv-chapters a {
  display: flex;
  gap: 0.7rem;
  padding: 0.2rem 0.4rem;
  border-radius: 0.3rem;
  color: var(--md-default-fg-color);
}

.md-typeset ol.dv-chapters a:hover,
.md-typeset ol.dv-chapters a:focus-visible,
.md-typeset ol.dv-chapters a.dv-activo {
  background: var(--md-accent-fg-color--transparent);
}

.md-typeset ol.dv-chapters span,
.md-typeset .dv-t {
  font-variant-numeric: tabular-nums;
  color: var(--dv-accent);
  font-weight: 600;
}

/* ------------------------------------------------- el reproductor --- */

dialog.dv-lightbox {
  width: min(94vw, 76rem);
  max-width: none;
  max-height: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: #ffffff;
  overflow: visible;
}

dialog.dv-lightbox::backdrop {
  background: #0a0c0fdb;
  backdrop-filter: blur(4px);
}

dialog.dv-lightbox[open] .dv-lightbox__panel {
  animation: dv-entra 0.22s ease-out;
}

@keyframes dv-entra {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.985);
  }
}

@media (prefers-reduced-motion: reduce) {
  dialog.dv-lightbox[open] .dv-lightbox__panel {
    animation: none;
  }
}

.dv-lightbox__panel {
  overflow: hidden;
  border-radius: 0.7rem;
  background: #111317;
  box-shadow: 0 30px 90px #00000080;
  font-family: var(--md-text-font-family);
}

.dv-lightbox__head {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.6rem 0.55rem 0.9rem;
}

.dv-lightbox__head h2 {
  flex: 1;
  min-width: 0;
  margin: 0;
  overflow: hidden;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: #ffffff;
}

.dv-lightbox__head small {
  color: #ffffff99;
  font-size: 0.66rem;
  white-space: nowrap;
}

.dv-lightbox__close {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 0;
  border-radius: 50%;
  background: #ffffff14;
  color: #ffffff;
  cursor: pointer;
}

.dv-lightbox__close:hover,
.dv-lightbox__close:focus-visible {
  background: #ffffff2e;
}

.dv-lightbox__close svg {
  width: 1rem;
  height: 1rem;
  fill: none;
  stroke: currentcolor;
  stroke-width: 2.2;
  stroke-linecap: round;
}

.dv-lightbox__stage {
  position: relative;
  background: #000000;
}

.dv-lightbox video {
  display: block;
  width: 100%;
  max-height: calc(100vh - 9.5rem);
  aspect-ratio: 16 / 9;
  background: #000000;
}

/* Al terminar: el siguiente, encima del último fotograma. */
.dv-lightbox__end {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  background: #0a0c0fcc;
  text-align: center;
}

.dv-lightbox__end.dv-visible {
  display: flex;
}

.dv-lightbox__end small {
  color: #ffffffa8;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dv-lightbox__end strong {
  max-width: 30rem;
  font-size: 1.1rem;
}

.dv-lightbox__end div {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
}

.dv-boton {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid #ffffff40;
  border-radius: 2rem;
  background: transparent;
  color: #ffffff;
  font: inherit;
  font-size: 0.7rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

.dv-boton:hover,
.dv-boton:focus-visible {
  border-color: #ffffff;
  color: #ffffff;
}

.dv-boton--verde {
  border-color: var(--didacta-green);
  background: var(--didacta-green-dark);
}

.dv-boton--verde:hover,
.dv-boton--verde:focus-visible {
  background: var(--didacta-green);
  border-color: var(--didacta-green);
}

.dv-boton svg {
  width: 0.8rem;
  height: 0.8rem;
  fill: currentcolor;
}

.dv-lightbox__foot {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.55rem 0.8rem 0.65rem;
}

.dv-lightbox__chapters {
  display: flex;
  flex: 1;
  gap: 0.35rem;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.dv-lightbox__chapters button {
  flex: none;
  padding: 0.22rem 0.6rem;
  border: 1px solid #ffffff26;
  border-radius: 1rem;
  background: transparent;
  color: #ffffffc7;
  font: inherit;
  font-size: 0.62rem;
  cursor: pointer;
  white-space: nowrap;
}

.dv-lightbox__chapters button span {
  margin-right: 0.35rem;
  color: #8ccf8c;
  font-variant-numeric: tabular-nums;
}

.dv-lightbox__chapters button:hover,
.dv-lightbox__chapters button:focus-visible,
.dv-lightbox__chapters button.dv-activo {
  border-color: var(--didacta-green);
  background: #55aa5526;
  color: #ffffff;
}

.dv-lightbox__links {
  display: flex;
  flex: none;
  gap: 0.5rem;
}

@media screen and (max-width: 44.9em) {
  dialog.dv-lightbox {
    width: 100vw;
  }
  .dv-lightbox__panel {
    border-radius: 0;
  }
  .dv-lightbox__foot {
    flex-direction: column;
    align-items: stretch;
  }
  .dv-lightbox__links {
    justify-content: flex-end;
  }
}

/* --------------------------------------------- la cabecera de la portada */

/* La misma ventana de siempre, que ahora se puede pulsar: un botón de
 * reproducir en medio y, abajo, qué vídeo es y cuánto dura. Tiene que verse
 * sin pasar el puntero por encima --quien no sabe que hay un vídeo no va a
 * ir a buscarlo--, y al pasarlo, la ventana se levanta un poco. */
.didacta-hero__video {
  position: relative;
  display: block;
  color: inherit;
  cursor: pointer;
}

.didacta-hero__video .didacta-window {
  transition: transform 0.25s, box-shadow 0.25s;
}

.didacta-hero__video:hover .didacta-window,
.didacta-hero__video:focus-visible .didacta-window {
  transform: translateY(-4px);
  box-shadow: 0 4px 10px #1c1f2614, 0 26px 60px #1c1f262e;
}

.didacta-hero__video:focus-visible {
  outline: none;
}

.didacta-hero__video:focus-visible .didacta-window {
  outline: 3px solid var(--didacta-green);
  outline-offset: 3px;
}

.didacta-hero__playbtn {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  place-items: center;
  width: 4.4rem;
  height: 4.4rem;
  border-radius: 50%;
  background: #346e34eb;
  box-shadow: 0 0 0 0.55rem #ffffff66, 0 12px 34px #0000004d;
  transform: translate(-50%, -50%);
  transition: transform 0.25s, background 0.25s;
}

.didacta-hero__playbtn svg {
  width: 1.9rem;
  height: 1.9rem;
  margin-left: 0.2rem;
  fill: #ffffff;
}

.didacta-hero__video:hover .didacta-hero__playbtn,
.didacta-hero__video:focus-visible .didacta-hero__playbtn {
  background: var(--didacta-green);
  transform: translate(-50%, -50%) scale(1.08);
}

@media (prefers-reduced-motion: no-preference) {
  .didacta-hero__playbtn::after {
    content: "";
    position: absolute;
    inset: -0.55rem;
    border-radius: 50%;
    border: 2px solid #ffffffb3;
    animation: dv-latido 2.4s ease-out infinite;
  }
}

@keyframes dv-latido {
  0% {
    opacity: 0.9;
    transform: scale(1);
  }
  80%,
  100% {
    opacity: 0;
    transform: scale(1.35);
  }
}

.didacta-hero__caption {
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.4rem 0.85rem 0.4rem 0.45rem;
  border-radius: 2rem;
  background: #14171ce0;
  color: #ffffff;
  box-shadow: 0 6px 20px #0000003d;
  font-size: 0.7rem;
  line-height: 1.25;
}

.didacta-hero__caption .dv-code {
  background: var(--didacta-green);
}

.didacta-hero__caption strong {
  font-weight: 700;
}

.didacta-hero__caption small {
  color: #ffffffb3;
  font-variant-numeric: tabular-nums;
}

/* En el móvil la ventana es pequeña: botón y rótulo más pequeños, para que
 * no se pisen. */
@media screen and (max-width: 44.9em) {
  .didacta-hero__playbtn {
    width: 3rem;
    height: 3rem;
    box-shadow: 0 0 0 0.35rem #ffffff66, 0 8px 24px #0000004d;
  }
  .didacta-hero__playbtn svg {
    width: 1.3rem;
    height: 1.3rem;
  }
  .didacta-hero__caption {
    left: 0.5rem;
    bottom: 0.5rem;
    padding: 0.25rem 0.6rem 0.25rem 0.3rem;
    font-size: 0.6rem;
  }
}