/* ==========================================================================
   MATERIAL — libros (carrusel) y congresos (cartel + video promocional)
   Mobile first · cortes: 48rem (tablet) y 64rem (escritorio)
   ========================================================================== */

/* --- Cabecera de sección: título · regla · lema ---------------------------- */

.mat-section {
  margin-top: var(--space-5);
  border-top: 1px solid var(--line-strong);
}

.mat-section + .mat-section {
  margin-top: var(--space-7);
}

.mat-head {
  display: grid;
  gap: var(--space-2);
  padding-top: var(--space-4);
}

.mat-head__title {
  font: 700 clamp(1.75rem, 1rem + 2.9vw, 2.9rem) / 1.02 var(--font-display);
  letter-spacing: -0.03em;
  color: var(--color-navy);
  text-wrap: balance;
}

.mat-head__tag {
  font: 500 var(--text-2xs) / 1.5 var(--font-ui);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

/* --- Libros ----------------------------------------------------------------- */

.books__track {
  --book-gap: var(--space-4);
  --per-view: 2;
  display: flex;
  gap: var(--book-gap);
  margin-top: var(--space-5);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
}

.books__track::-webkit-scrollbar {
  display: none;
}

.book {
  display: flex;
  flex: 0 0 calc((100% - (var(--per-view) - 1) * var(--book-gap)) / var(--per-view));
  flex-direction: column;
  gap: var(--space-3);
  scroll-snap-align: start;
}

.book__cover {
  position: relative;
  aspect-ratio: 2 / 3;
  overflow: hidden;
  background: var(--color-navy-deep);
  box-shadow: 0 22px 30px -24px rgb(0 0 0 / 0.5);
}

.book__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease-out);
}

/* Marco interior de latón al pasar el cursor, igual que en servicios y proyectos */
.book__cover::after,
.event__poster::after {
  content: "";
  position: absolute;
  inset: 0.5rem;
  border: 1px solid var(--color-gold-soft);
  opacity: 0;
  transform: scale(1.04);
  pointer-events: none;
  transition: opacity var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out);
}

.book__cover:hover img,
.event__poster:hover img {
  transform: scale(1.05);
}

.book__cover:hover::after,
.event__poster:hover::after {
  opacity: 1;
  transform: scale(1);
}

.book__title {
  flex: 1;
  font: 500 clamp(1.05rem, 0.9rem + 0.55vw, 1.3rem) / 1.15 var(--font-display);
  letter-spacing: -0.03em;
  color: var(--color-navy);
  text-wrap: balance;
}

.book .btn {
  width: 100%;
  padding-inline: 0.75rem;
  white-space: normal;
  text-align: center;
}

/* Pie del carrusel: contador · regla de avance · flechas */
.books__nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-5);
}

.books__count {
  flex: none;
  font: 500 var(--text-2xs) / 1 var(--font-ui);
  letter-spacing: 0.2em;
  color: var(--color-ink-soft);
  font-variant-numeric: tabular-nums;
}

.books__progress {
  position: relative;
  flex: 1;
  height: 1px;
  overflow: hidden;
  background: var(--line);
}

/* La barra dorada es la parte visible del carrusel; se desplaza con él (solo transform) */
.books__progress-thumb {
  position: absolute;
  inset: 0;
  background: var(--color-gold);
  transform-origin: left;
  transform: translateX(var(--thumb-pos, 0%)) scaleX(var(--thumb-size, 1));
  transition: transform var(--duration-normal) var(--ease-out);
}

.books__nav .carousel__btn {
  border-radius: 50%;
}

/* --- Congresos -------------------------------------------------------------- */

.events__list {
  margin-top: var(--space-5);
}

.event {
  --poster-w: clamp(10rem, 24vw, 22rem);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas:
    "num"
    "body"
    "poster"
    "label"
    "video";
  gap: var(--space-4);
  padding-block: var(--space-4) var(--space-6);
  border-top: 1px solid var(--line);
}

.event:first-child {
  border-top: 0;
}

/* Numeración: cifra · regla corta · regla de latón que se dibuja al aparecer */
.event__num {
  grid-area: num;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font: 500 var(--text-xs) / 1 var(--font-ui);
  letter-spacing: 0.2em;
  color: var(--color-ink-soft);
}

.event__num::before {
  content: "";
  order: 2;
  width: 1.6rem;
  height: 1px;
  background: var(--line-strong);
}

.event__num::after {
  content: "";
  order: 3;
  width: clamp(4rem, 12vw, 9rem);
  height: 1px;
  background: var(--color-gold);
  transform-origin: left;
  transition: transform 1.2s var(--ease-out) 0.25s;
}

.js .reveal:not(.is-visible) .event__num::after {
  transform: scaleX(0);
}

.event__body {
  grid-area: body;
  align-self: center;
}

.event__title {
  font: 700 clamp(1.85rem, 1.2rem + 2.2vw, 2.7rem) / 1.02 var(--font-display);
  letter-spacing: -0.035em;
  color: var(--color-navy);
  text-wrap: balance;
}

.event__text {
  margin-top: var(--space-3);
  max-width: 21em;
  font: italic 500 clamp(1.05rem, 0.95rem + 0.5vw, 1.3rem) / 1.35 var(--font-display);
  color: var(--color-steel);
  text-wrap: balance;
}

.event__body .btn {
  margin-top: var(--space-5);
}

/* Cartel completo (2:3): no se recorta porque lleva texto */
.event__poster {
  grid-area: poster;
  position: relative;
  width: min(100%, 21rem);
  aspect-ratio: 2 / 3;
  overflow: hidden;
  background: var(--color-navy-deep);
  box-shadow: 0 26px 34px -26px rgb(0 0 0 / 0.55);
}

.event__poster img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.1s var(--ease-out);
}

.event__video-label {
  grid-area: label;
  margin-top: var(--space-2);
  font: 500 var(--text-2xs) / 1.3 var(--font-ui);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.event > .trailer {
  grid-area: video;
}

/* --- Contenedor azul del video promocional ---------------------------------- */

.trailer--promo {
  /* Azul de la plantilla: más saturado que el azul de marca para que el recuadro se lea como "pantalla" */
  --promo-top: #123763;
  --promo-bottom: #0b2748;
  align-content: center;
  row-gap: var(--space-4);
  background: linear-gradient(180deg, var(--promo-top), var(--promo-bottom));
}

.trailer--promo::before,
.trailer--promo::after {
  display: none;
}

.trailer--promo .trailer__play {
  width: 4.4rem;
  height: 4.4rem;
  background: transparent;
}

.trailer--promo .trailer__play .icon {
  font-size: 1.5rem;
}

.trailer--promo .trailer__label {
  position: static;
  padding: 0;
  background: none;
  font: 400 var(--text-base) / 1.3 var(--font-display);
  letter-spacing: 0.01em;
}

/* Trazo de latón bajo el rótulo */
.trailer--promo .trailer__label::after {
  content: "";
  display: block;
  width: 2rem;
  height: 1px;
  margin: 0.8rem auto 0;
  background: var(--color-gold);
}

/* El estado ("Próximamente" / "Ver tráiler") solo se muestra si el video falla */
.trailer--promo .trailer__status {
  display: none;
}

.trailer--promo.has-error .trailer__status {
  display: block;
  margin-top: 0.6rem;
}

/* --- TABLET ≥ 48rem --- */

@media (min-width: 48rem) {
  .mat-head {
    grid-template-columns: auto minmax(1rem, 1fr) auto;
    align-items: end;
    gap: var(--space-4);
  }

  /* Regla entre el título y el lema, a media altura de la última línea de texto */
  .mat-head::after {
    content: "";
    grid-column: 2;
    grid-row: 1;
    height: 1px;
    margin-bottom: 0.5rem;
    background: var(--line);
  }

  .mat-head__tag {
    grid-column: 3;
    grid-row: 1;
    margin-bottom: 0.15rem;
    text-align: right;
  }

  .books__track {
    --per-view: 3;
    --book-gap: var(--space-5);
  }

  .event {
    grid-template-columns: minmax(0, 1fr) var(--poster-w) calc(var(--poster-w) * 0.84375);
    grid-template-areas:
      "num num label"
      "body poster video";
    column-gap: var(--space-5);
    row-gap: var(--space-3);
    padding-block: var(--space-4) var(--space-5);
  }

  /* Ancho del video = 9/16 de la altura del cartel (2:3), así los dos miden lo mismo de alto */
  .event__poster {
    width: auto;
  }

  .event__video-label {
    margin-top: 0;
    align-self: center;
  }

  .event__body {
    padding-right: var(--space-4);
  }
}

/* --- ESCRITORIO ≥ 64rem --- */

@media (min-width: 64rem) {
  .books__track {
    --per-view: 4;
  }

  .event {
    column-gap: var(--space-6);
  }

  /* El texto entra un poco respecto a la numeración, como en la plantilla */
  .event__body {
    padding-left: clamp(2rem, 5vw, 4rem);
  }
}