/* Студийный рой: hero-треугольник справа + фон-полёт, лучи снизу. */

.card-big[data-item-swarm] {
  --swarm-accent: #9ad4ff;
  /* клип по радиусу; герои чуть могут вылезать за край и обрезаться — высоту не раздувают */
  overflow: hidden;
  isolation: isolate;
}

.card-big[data-item-swarm] > .card-text-wrapper-big,
.card-big[data-item-swarm] > .card-image-wrapper-big {
  position: relative;
  z-index: 3;
}

/* grid остаётся absolute из gregtech-cards — иначе height:100% может раздувать карточку */
.card-big[data-item-swarm] > .grid {
  z-index: 1;
}

.item-swarm-stage {
  position: absolute;
  inset: 0;
  z-index: 2;
  width: auto;
  height: auto;
  margin: 0;
  padding: 0;
  pointer-events: none;
  overflow: hidden;
  border-radius: inherit;
  /* WebKit считает mask по яркости: #000 прячет весь слой. Белый виден и в alpha, и в luminance. */
  mask-mode: alpha;
  -webkit-mask-source-type: alpha;
  mask-image: linear-gradient(
    to top,
    #fff 0%,
    #fff 48%,
    rgba(255, 255, 255, 0.65) 72%,
    transparent 94%
  );
  -webkit-mask-image: linear-gradient(
    to top,
    #fff 0%,
    #fff 48%,
    rgba(255, 255, 255, 0.65) 72%,
    transparent 94%
  );
}

/* Фиксированный бокс по центру справа — вне потока, высоту карточки не трогает.
   Чуть может вылезти за край и обрезаться overflow карточки. */
.item-swarm-heroes {
  position: absolute;
  top: 50%;
  right: -1%;
  z-index: 2; /* под текстом (z=3), над/рядом со stage */
  width: min(48%, 26rem);
  height: 22rem;
  max-height: 86%;
  margin: 0;
  padding: 0;
  transform: translateY(-50%);
  pointer-events: none;
  overflow: visible;
}

.card-big[data-item-swarm] .swarm-side-media {
  flex: 0 1 18rem;
  width: min(28%, 18rem);
  min-width: 12rem;
  min-height: 14rem;
  align-self: flex-end;
}

.card-big[data-item-swarm] .swarm-side-media > .card-image-big.ae2-secondary {
  position: relative;
  right: auto;
  bottom: auto;
  width: 100%;
  max-width: 16rem;
  height: auto;
  transform: none;
}

.item-swarm-ambience {
  position: absolute;
  left: 6%;
  right: 6%;
  bottom: 0;
  height: 62%;
  background:
    radial-gradient(
      ellipse 55% 85% at 50% 100%,
      color-mix(in srgb, var(--swarm-accent) 34%, transparent),
      transparent 72%
    ),
    radial-gradient(
      ellipse 26% 60% at 78% 100%,
      color-mix(in srgb, var(--swarm-accent) 24%, transparent),
      transparent 70%
    ),
    radial-gradient(
      ellipse 18% 40% at 22% 100%,
      rgba(255, 255, 255, 0.08),
      transparent 70%
    );
  opacity: 0.72;
  animation: item-swarm-ambience 7s ease-in-out infinite;
}

.item-swarm-softit {
  position: absolute;
  bottom: 0;
  left: var(--x, 50%);
  width: 2.5px;
  height: var(--height, 78%);
  opacity: 0;
  background: linear-gradient(
    to top,
    color-mix(in srgb, var(--softit, var(--swarm-accent)) 90%, #fff),
    color-mix(in srgb, var(--softit, var(--swarm-accent)) 45%, transparent) 40%,
    transparent
  );
  box-shadow: 0 0 1rem 0.12rem color-mix(in srgb, var(--softit, var(--swarm-accent)) 32%, transparent);
  transform-origin: bottom center;
  animation: item-swarm-softit 6.4s ease-out var(--delay, 0s) infinite;
}

.item-swarm-spark {
  position: absolute;
  left: var(--x, 50%);
  top: 0;
  width: var(--size, 2.5px);
  height: var(--size, 2.5px);
  border-radius: 50%;
  opacity: 0;
  background: #fff;
  box-shadow:
    0 0 0.55rem 0.08rem rgba(255, 255, 255, 0.75),
    0 0 0.9rem 0.12rem color-mix(in srgb, var(--spark, var(--swarm-accent)) 55%, transparent);
  animation: item-swarm-spark var(--dur, 6s) ease-out var(--delay, 0s) infinite;
}

.item-swarm-fly {
  position: absolute;
  left: var(--x, 50%);
  display: grid;
  place-items: center;
  width: var(--fly-size, 2.6rem);
  height: var(--fly-size, 2.6rem);
  margin: 0;
  transform: translate3d(-50%, -50%, 0) scale(var(--scale, 1)) rotate(var(--rot, 0deg));
  /* filter на том же узле, что и animation, в iOS WebKit не рисует слой вообще */
  filter: none;
}

.item-swarm-flyer {
  top: 0;
  opacity: 0;
  /* почти линейный подъём — без «тормоза» вверху, из‑за которого пачки догоняют друг друга */
  animation: item-swarm-rise var(--dur, 11s) cubic-bezier(0.33, 0.08, 0.55, 0.92) var(--delay, 0s) infinite;
}

.item-swarm-flyer[data-side="right"] {
  filter: none;
}

/* Огромные айтемы — треугольник внутри .item-swarm-heroes (центр карточки справа) */
.item-swarm-hero {
  top: var(--hero-top, 50%);
  opacity: 1;
  z-index: 40;
  filter: none;
  transform-origin: 50% 70%;
  animation: item-swarm-hero-sway 3.4s ease-in-out var(--bob-delay, 0s) infinite;
}

.item-swarm-fly img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  image-rendering: pixelated;
  image-rendering: -webkit-crisp-edges;
  image-rendering: crisp-edges;
  filter: drop-shadow(0 8px 10px rgba(0, 0, 0, 0.4));
}

/* Смена hero: старый улетает, новый прилетает */
.item-swarm-hero.is-swapping {
  animation-play-state: paused;
}
.item-swarm-hero > .item-swarm-main,
.item-swarm-hero > .item-swarm-out {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  pointer-events: none;
  will-change: transform, opacity;
}
.item-swarm-hero > .item-swarm-out {
  z-index: 3;
}
.item-swarm-hero > .item-swarm-main {
  z-index: 2;
}
.item-swarm-hero > .item-swarm-out.is-leaving {
  animation: item-swarm-hero-out 0.62s cubic-bezier(0.4, 0.05, 0.7, 0.2) forwards;
}
.item-swarm-hero > .item-swarm-main.is-entering {
  animation: item-swarm-hero-in 0.72s cubic-bezier(0.16, 0.84, 0.28, 1) forwards;
}
@keyframes item-swarm-hero-out {
  0% {
    opacity: 1;
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform: translate(var(--exit-x, 2.4rem), var(--exit-y, -3rem))
      scale(0.42)
      rotate(var(--exit-rot, 18deg));
  }
}
@keyframes item-swarm-hero-in {
  0% {
    opacity: 0;
    transform: translate(var(--enter-x, -2rem), var(--enter-y, 3.4rem))
      scale(0.4)
      rotate(var(--enter-rot, -14deg));
  }
  100% {
    opacity: 1;
    transform: translate(0, 0) scale(1) rotate(0deg);
  }
}

.card-big[data-item-swarm="gtceu_modern"] .theme-title--gtceu {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  align-items: flex-start;
  gap: 0.06em;
}
.card-big[data-item-swarm="gtceu_modern"] .theme-title--gtceu > .title-lead,
.card-big[data-item-swarm="gtceu_modern"] .theme-title--gtceu > .title-accent {
  display: block;
  width: auto;
  max-width: 100%;
}
.card-big[data-item-swarm="gtceu_modern"] .theme-title--gtceu > .title-accent {
  letter-spacing: 0.04em;
}

@media (max-width: 980px) {
  .card-big[data-item-swarm="gtceu_modern"] .theme-title--gtceu {
    align-items: center;
    text-align: center;
  }
}

.item-swarm-glow {
  display: none;
}

.item-swarm-hero .item-swarm-glow {
  display: none;
}

.item-swarm-stage.is-static .item-swarm-softit,
.item-swarm-stage.is-static .item-swarm-spark,
.item-swarm-stage.is-static .item-swarm-ambience {
  display: none;
}

.item-swarm-stage.is-static .item-swarm-flyer,
.item-swarm-stage.is-static .item-swarm-hero {
  animation: none !important;
  opacity: 0.9;
}

.card-big[data-item-swarm]:not(.is-swarm-visible) .item-swarm-stage *,
.card-big[data-item-swarm]:not(.is-swarm-visible) .item-swarm-heroes * {
  animation-play-state: paused !important;
}

@keyframes item-swarm-ambience {
  0%,
  100% {
    opacity: 0.55;
  }
  50% {
    opacity: 0.85;
  }
}

@keyframes item-swarm-softit {
  0%,
  12%,
  55%,
  100% {
    opacity: 0;
    transform: translateX(-50%) rotate(var(--angle, 0deg)) scaleY(0.18);
  }
  22% {
    opacity: 0.58;
  }
  40% {
    opacity: 0;
    transform: translateX(-50%) rotate(var(--angle, 0deg)) scaleY(1);
  }
}

@keyframes item-swarm-spark {
  0% {
    opacity: 0;
    transform: translate3d(-50%, calc(var(--swarm-height) * 1.08 - 50%), 0) scale(0.45);
  }
  12% {
    opacity: 0.9;
  }
  72% {
    opacity: 0.35;
  }
  100% {
    opacity: 0;
    transform: translate3d(calc(-50% + var(--drift, 0rem)), calc(var(--swarm-height) * 0.22 - 50%), 0) scale(0.28);
  }
}

/* Плавный конвейер: длинная видимость, мягкий вход/выход без волны снизу */
@keyframes item-swarm-rise {
  0% {
    opacity: 0;
    transform: translate3d(-50%, calc(var(--swarm-height) * 1.12 - 50%), 0) scale(calc(var(--scale, 1) * 0.92)) rotate(var(--rot, 0deg));
  }
  6% {
    opacity: 0.88;
  }
  82% {
    opacity: 0.86;
  }
  100% {
    opacity: 0;
    transform: translate3d(calc(-50% + var(--drift, 0rem)), calc(var(--swarm-height) * 0.18 - 50%), 0)
      scale(calc(var(--scale, 1) * 1.04))
      rotate(var(--rot, 0deg));
  }
}

@keyframes item-swarm-hero-sway {
  0%,
  100% {
    transform: translate3d(-50%, -50%, 0) rotate(calc(var(--rot, 0deg) - 7deg));
  }
  50% {
    transform: translate3d(-50%, -50%, 0) rotate(calc(var(--rot, 0deg) + 7deg));
  }
}

/* Планшет + мобилка: герои в потоке перед заголовком; флаеры по краям */
@media (max-width: 980px) {
  .card-big[data-item-swarm] {
    overflow: hidden;
  }

  .card-big[data-item-swarm] > .card-text-wrapper-big {
    z-index: 4;
  }

  .card-big[data-item-swarm] .swarm-side-media {
    order: -1;
    flex: 0 0 auto;
    align-self: center;
    width: min(100%, 14rem);
    min-width: 0;
    min-height: 10rem;
  }

  .item-swarm-heroes {
    position: relative;
    top: auto;
    right: auto;
    left: auto;
    transform: none;
    order: -1;
    z-index: 3;
    flex: 0 0 auto;
    width: min(100%, 20rem);
    height: 12rem;
    max-height: none;
    margin: 0.15rem auto 0.35rem;
    overflow: visible;
  }

  .item-swarm-hero {
    --fly-size: 5rem !important;
    filter: none;
  }

  /* content-visibility: auto на iOS не дорисовывает абсолютные картинки внутри секции */
  main > .theme-section:has([data-item-swarm]) {
    content-visibility: visible;
    contain-intrinsic-size: none;
  }

  .item-swarm-stage {
    mask-image:
      linear-gradient(
        to right,
        #fff 0%,
        #fff 14%,
        transparent 26%,
        transparent 74%,
        #fff 86%,
        #fff 100%
      ),
      linear-gradient(to top, #fff 0%, #fff 52%, transparent 94%);
    -webkit-mask-image:
      linear-gradient(
        to right,
        #fff 0%,
        #fff 14%,
        transparent 26%,
        transparent 74%,
        #fff 86%,
        #fff 100%
      ),
      linear-gradient(to top, #fff 0%, #fff 52%, transparent 94%);
    mask-composite: intersect;
    -webkit-mask-composite: source-in;
  }

  .item-swarm-fly img {
    filter: none;
  }

  .item-swarm-flyer {
    --fly-size: 1.5rem;
  }

  .item-swarm-softit {
    opacity: 0.55;
  }
}

@media (max-width: 680px) {
  .item-swarm-heroes {
    width: min(100%, 17.5rem);
    height: 10.25rem;
  }

  .item-swarm-hero {
    --fly-size: 4.35rem !important;
  }

  .item-swarm-flyer {
    --fly-size: 1.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .item-swarm-ambience,
  .item-swarm-softit,
  .item-swarm-spark,
  .item-swarm-flyer,
  .item-swarm-hero {
    animation: none !important;
  }

  .item-swarm-hero {
    opacity: 0.92;
  }
}

/* iPhone: двойная маска WebKit может скрыть рой. */
@supports (-webkit-touch-callout: none) {
  @media (hover: none) and (pointer: coarse) {
    .card-big[data-item-swarm] {
      isolation: auto;
    }

    .item-swarm-stage {
      mask-image: none;
      -webkit-mask-image: none;
    }

    .item-swarm-fly img,
    .item-swarm-hero > .item-swarm-main,
    .item-swarm-hero > .item-swarm-out {
      filter: none;
      -webkit-transform: none;
      transform: none;
    }

    .item-swarm-ambience {
      opacity: 0.8;
      animation: item-swarm-ambience 7s ease-in-out infinite !important;
    }

    .item-swarm-softit {
      animation: item-swarm-softit 6.4s ease-out var(--delay, 0s) infinite !important;
    }

    .item-swarm-spark {
      animation: item-swarm-spark var(--dur, 6s) ease-out var(--delay, 0s) infinite !important;
    }

    .item-swarm-flyer {
      animation: item-swarm-rise var(--dur, 11s) cubic-bezier(0.33, 0.08, 0.55, 0.92) var(--delay, 0s) infinite !important;
    }

    .item-swarm-hero {
      opacity: 1 !important;
      animation: item-swarm-hero-sway 3.4s ease-in-out var(--bob-delay, 0s) infinite !important;
    }

    .item-swarm-stage.is-static .item-swarm-softit,
    .item-swarm-stage.is-static .item-swarm-spark,
    .item-swarm-stage.is-static .item-swarm-ambience {
      display: block !important;
    }

  }
}