.section-card-stack {
  padding-top: 96px;
  padding-bottom: 96px;
}

.section-card-stack .heading-title {
  letter-spacing: -0.02em;
}

.card-stack {
  --card-width: min(400px, 82vw);
  --card-height: 440px;
  --card-gap: 120px;
  --card-rotate: 8deg;
  --card-radius: 32px;
  --card-shadow: 0px 7.77px 16px rgba(0, 0, 0, 0.06), 0px 3px 3px rgba(0, 0, 0, 0.1), 0px -4px 0px rgba(0, 0, 0, 0.05) inset, 0px 4px 0px rgba(255, 255, 255, 0.6) inset;
  --card-bg: var(--neutral-100);
  --card-border: var(--neutral-200);
  --transition-fast: 220ms cubic-bezier(0.22, 0.61, 0.36, 1);
  --transition-slow: 480ms cubic-bezier(0.22, 0.61, 0.36, 1);

  position: relative;
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 24px 40px;
  border-radius: 40px;
  
  perspective: 1600px;
}

.card-stack__viewport {
  position: relative;
  height: var(--card-height);
  outline: none;
}

.card-stack__card {
  position: absolute;
  inset: 0 auto auto 50%;
  width: var(--card-width);
  height: var(--card-height);
  transform-origin: center bottom;
  transform: translateX(-50%);
  border-radius: var(--card-radius);
  background: radial-gradient(62.56% 62.56% at 28.14% -10.42%, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0) 100%), var(--card-bg);
  box-shadow: var(--card-shadow);
  border: 1px solid var(--card-border);
  color: var(--neutral-800);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transition:
    transform var(--transition-slow),
    opacity var(--transition-fast),
    box-shadow var(--transition-slow),
    filter var(--transition-fast);
  will-change: transform, opacity;
}

.card-stack__card img {
  max-width: 100%;
  display: block;
}

.card-stack__card--is-active {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateZ(40px) scale(1.02);
}

.card-stack__card--visible {
  opacity: 1;
  pointer-events: auto;
}

.card-stack__image-wrap {
  flex: 0 0 55%;
  overflow: hidden;
}

.card-stack__image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform-origin: center;
  transition: transform 500ms ease-out;
}

.card-stack__card--is-active .card-stack__image-wrap img {
  transform: scale(1.06);
}

.card-stack__body {
  flex: 1;
  position: relative;
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card-stack__title {
  font-size: 21px;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--neutral-900);
}

.card-stack__text {
  margin: 0;
  color: var(--neutral-500);
  font-size: 14px;
}

.card-stack__body::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(250, 250, 250, 0.96), rgba(250, 250, 250, 0.9));
  pointer-events: none;
  opacity: 1;
}

.card-stack__body > * {
  position: relative;
  z-index: 1;
}

.card-stack__link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: #38bdf8;
  text-decoration: none;
}

.card-stack__link:hover {
  color: #0ea5e9;
}

.card-stack__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.card-stack__dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 28px;
}

.card-stack__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: none;
  padding: 0;
  background: var(--neutral-200);
  cursor: pointer;
  transition: all 180ms ease-out;
}

.card-stack__dot--is-active {
  width: 28px;
  background: linear-gradient(90deg, var(--brand), #a855f7);
}

.card-stack__dot:focus-visible {
  outline: 2px solid #38bdf8;
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Dynamic transforms controlled via CSS custom properties set in JS */
.card-stack__card {
  transform:
    translateX(calc(-50% + var(--card-offset-x, 0px)))
    translateZ(var(--card-depth, 0px))
    rotate(var(--card-tilt, 0deg))
    scale(var(--card-scale, 1));
  z-index: var(--card-z-index, 0);
  filter: saturate(var(--card-saturation, 0.85)) brightness(var(--card-brightness, 0.95));
}

@media (max-width: 991px) {
  .section-card-stack {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .card-stack {
    --card-width: min(360px, 100%);
    --card-height: 420px;
    --card-gap: 100px;
    border-radius: 32px;
  }
}

@media (max-width: 767px) {
  .card-stack {
    --card-width: 100%;
    --card-height: auto;
  }

  .card-stack__viewport {
    height: auto;
    min-height: 0;
  }

  .card-stack__card {
    position: relative;
    left: 0;
    inset: auto;
    width: 100%;
    height: auto;
    transform: translateX(0) scale(0.98);
    opacity: 0;
    margin-inline: auto;
  }

  .card-stack__card--is-active {
    transform: translateX(0) scale(1);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-stack__card,
  .card-stack__image-wrap img {
    transition: none;
  }
}