/* Einblicke: Karten vom Bildschirmrand — Observer auf Slot, Animation auf Item */

.tf-section--feature-flow {
  padding: clamp(2.5rem, 6vw, 4rem) 0;
  background: var(--tf-bg);
  overflow-x: clip;
}

#taktflo-landing .tf-section--feature-flow {
  background: transparent;
  padding-top: 0;
  padding-bottom: var(--tf-section-gap, clamp(8.25rem, 12vw, 10.5rem));
}

.tf-section--feature-flow > .tf-container {
  margin-bottom: clamp(1rem, 2.5vw, 1.5rem);
}

.tf-feature-flow {
  /* Ein Verlauf für alle Funktions-Kacheln (Referenz: Teilen / shade-1) */
  --tf-feature-card-gradient: linear-gradient(
    118deg,
    #0f172a 0%,
    #1e3a8a 38%,
    #1e40af 72%,
    #172554 100%
  );
  --tf-feature-card-glow: radial-gradient(
    ellipse 70% 120% at 0% 50%,
    rgba(59, 130, 246, 0.22),
    transparent 62%
  );
  --tf-feature-card-overlay: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.06) 0%,
    transparent 42%,
    rgba(0, 0, 0, 0.12) 100%
  );
  display: flex;
  flex-direction: column;
  gap: clamp(1rem, 2.2vw, 1.35rem);
  width: 100%;
  margin: 0;
  padding: 0;
}

/* Slot = Scroll-Messfläche (ohne Transform), bleibt im Viewport erkannt */
.tf-feature-flow__slot {
  width: 100%;
  margin: 0;
  padding: 0;
  min-height: 1px;
}

.tf-feature-flow__slot--reverse {
  display: flex;
  justify-content: flex-end;
}

/* Kachel etwas größer, bündig am Rand */
.tf-feature-flow__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.35rem;
  align-items: center;
  width: min(97vw, 1320px);
  margin: 0;
  padding: clamp(1.45rem, 3.2vw, 2.1rem) clamp(1.5rem, 4.5vw, 3rem);
  color: #f8fafc;
  border-radius: 0 clamp(20px, 3vw, 32px) clamp(20px, 3vw, 32px) 0;
  box-shadow: 0 20px 48px rgba(15, 23, 42, 0.28);
  position: relative;
  overflow: hidden;
  background: var(--tf-feature-card-gradient);
  opacity: 0;
  transition:
    opacity 1.35s cubic-bezier(0.22, 1, 0.36, 1),
    transform 1.35s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform, opacity;
}

.tf-feature-flow__slot--reverse .tf-feature-flow__item {
  border-radius: clamp(20px, 3vw, 32px) 0 0 clamp(20px, 3vw, 32px);
}

.tf-feature-flow__item::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: var(--tf-feature-card-glow);
}

.tf-feature-flow__item::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
  background: var(--tf-feature-card-overlay);
}

@media (min-width: 768px) {
  .tf-feature-flow__item {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 48%);
    gap: clamp(1.75rem, 3.5vw, 3rem);
    padding: clamp(1.65rem, 3vw, 2.25rem) clamp(2rem, 5.5vw, 3.5rem);
  }

  .tf-feature-flow__slot--reverse .tf-feature-flow__item {
    grid-template-columns: minmax(300px, 48%) minmax(0, 1fr);
  }

  .tf-feature-flow__slot--reverse .tf-feature-flow__copy {
    order: 2;
  }

  .tf-feature-flow__slot--reverse .tf-feature-flow__media {
    order: 1;
  }
}

.tf-feature-flow__copy,
.tf-feature-flow__media {
  position: relative;
  z-index: 1;
}

.tf-feature-flow__label {
  display: inline-block;
  margin: 0 0 0.5rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(191, 219, 254, 0.88);
}

.tf-feature-flow__title {
  margin: 0 0 0.55rem;
  font-family: var(--tf-display);
  font-size: clamp(1.3rem, 2.9vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: #fff;
}

.tf-feature-flow__text {
  margin: 0;
  font-size: clamp(0.92rem, 1.85vw, 1.05rem);
  line-height: 1.55;
  color: rgba(226, 232, 240, 0.9);
  max-width: 44ch;
}

.tf-feature-flow__media {
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  background: #0a0f18;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.35);
  aspect-ratio: 16 / 9;
}

.tf-feature-flow__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Notationen-GIF: unterer Rand (Daumen) sichtbar halten */
.tf-feature-flow__img.tf-gif-fit {
  object-fit: cover;
  object-position: center 92%;
}

/* Einflug: Item bewegt sich, Slot bleibt für IO sichtbar */
.tf-feature-flow__slot.tf-reveal--left:not(.is-visible) .tf-feature-flow__item {
  opacity: 0;
  transform: translate3d(calc(-100% - 28px), 0, 0);
}

.tf-feature-flow__slot.tf-reveal--right:not(.is-visible) .tf-feature-flow__item {
  opacity: 0;
  transform: translate3d(calc(100% + 28px), 0, 0);
}

.tf-feature-flow__slot.is-visible .tf-feature-flow__item {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition-delay: 0.15s;
}

/* Slot selbst nie verstecken (nur für IO-Klassen) */
html.tf-reveal-js .tf-feature-flow__slot.tf-reveal:not(.is-visible) {
  opacity: 1;
  transform: none;
}

@media (max-width: 767px) {
  .tf-feature-flow__item,
  .tf-feature-flow__slot--reverse .tf-feature-flow__item {
    width: min(98vw, 100%);
    border-radius: 0 clamp(16px, 4vw, 22px) clamp(16px, 4vw, 22px) 0;
  }

  .tf-feature-flow__slot--reverse .tf-feature-flow__item {
    border-radius: clamp(16px, 4vw, 22px) 0 0 clamp(16px, 4vw, 22px);
  }

  .tf-feature-flow__slot.tf-reveal--left:not(.is-visible) .tf-feature-flow__item {
    transform: translate3d(calc(-100% - 18px), 0, 0);
  }

  .tf-feature-flow__slot.tf-reveal--right:not(.is-visible) .tf-feature-flow__item {
    transform: translate3d(calc(100% + 18px), 0, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .tf-feature-flow__item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}