/* ============================================
   Sticky Scroll Cards - Pure CSS approach
   No JS transforms, no blur, no glitching
   ============================================ */

.scroll-stack-section {
  position: relative;
  width: 100%;
}

.scroll-stack-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 24px 200px;
}

.scroll-stack-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  padding: 48px;
  border-radius: 32px;
  margin-bottom: 32px;
  /* The magic — pure CSS stacking */
  position: sticky;
  top: 100px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
}

/* Card color variants */
.scroll-stack-card:nth-child(1) {
  background: #F0F7F4;
}

.scroll-stack-card:nth-child(2) {
  background: #F5F7F0;
}

.scroll-stack-card:nth-child(3) {
  background: #FFF9F0;
}

.scroll-stack-card:nth-child(4) {
  background: #F0F5F7;
}

.scroll-stack-card .step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(27, 77, 62, 0.1);
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.scroll-stack-card h3 {
  font-family: 'Playfair Display', serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
}

.scroll-stack-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
}

.scroll-stack-card .card-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.scroll-stack-card .card-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-stack-card .step-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.scroll-stack-card .step-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text);
  padding: 8px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.scroll-stack-card .step-features li:last-child {
  border-bottom: none;
}

.scroll-stack-card .step-features li::before {
  content: '\2713';
  color: var(--primary);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

/* Visual placeholder for method illustration */
.scroll-stack-card .step-visual {
  width: 100%;
  aspect-ratio: 4/3;
  background: rgba(27, 77, 62, 0.06);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed rgba(27, 77, 62, 0.15);
}

.scroll-stack-card .step-visual-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.scroll-stack-end {
  display: none;
}

@media (max-width: 768px) {
  .scroll-stack-card {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 32px 24px;
    border-radius: 24px;
    top: 80px;
  }

  .scroll-stack-card h3 {
    font-size: 1.4rem;
  }

  .scroll-stack-inner {
    padding: 20px 16px 120px;
  }

  .scroll-stack-card .card-visual {
    order: -1;
  }
}