.clients-section__container {
  width: 100%;
  height: 100vh;
  position: relative;
  overflow: hidden;
  text-align: center;
  color: #fafafa;
  padding: 5rem 1rem;
  margin: 0 auto;
  box-sizing: border-box;
}

.clients-section__container h2 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 800;
}

.clients-section__container p {
  font-size: 1.25rem;
  font-weight: 400;
  margin: 0;
  color: #ccc;
}

.clients-section__list-container {
  position: relative;
  height: 60vh;
  overflow: hidden;
  margin-top: 4rem;
}

.clients-section__list-scroll {
  display: flex;
  flex-direction: column;
  animation: scroll-up 15s linear infinite;
  will-change: transform;
  contain: none;
  backface-visibility: visible;
  transform: translateZ(0);
  
  /* NEW: Force browser to render offscreen children */
  content-visibility: auto;
  contain-intrinsic-size: 1200px; /* estimated total scroll height */
}

.clients-section__list-scroll::after {
  content: '';
  display: block;
  height: 1px;
}

/* Each grid of logos */
.clients-section__list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  row-gap: 2rem;
  place-items: center;
}

/* List items */
.clients-section__list-item {
  width: 9rem;
  height: 9rem;
  border-radius: 0.5rem;
  display: grid;
  place-items: center;
}

.clients-section__list-item img {
  width: 100%;
  height: 8rem;
  object-fit: contain;
  border-radius: 0.5rem;
  filter: grayscale(1) contrast(0.5);
  opacity: 1 !important;
  visibility: visible !important;
  transition: none !important;
}

.clients-section__list-item:hover img {
  filter: drop-shadow(0 0 0.75rem rgb(204, 204, 204));
}

/* Animation Keyframes */
@keyframes scroll-up {
  0% {
    transform: translateY(0%);
  }
  100% {
    transform: translateY(-50%);
  }
}

/* Pause scroll on hover
.clients-section__list-container:hover .clients-section__list-scroll {
  animation-play-state: paused;
} */

/* Optional gradient overlay top/bottom */
.clients-section__list-container::before,
.clients-section__list-container::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  height: 10%;
  z-index: 2;
  pointer-events: none;
}

.clients-section__list-container::before {
  top: 0;
  background: linear-gradient(#1b1b1b, transparent);
}

.clients-section__list-container::after {
  bottom: 0;
  background: linear-gradient(to top, #1b1b1b, transparent);
}

/* Responsive Columns */
@media screen and (max-width: 768px) {
  .clients-section__list {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 769px) and (max-width: 1023px) {
  .clients-section__list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media screen and (min-width: 1024px) and (max-width: 1280px) {
  .clients-section__list {
    grid-template-columns: repeat(4, 1fr);
  }

  .clients-section__list-item:last-of-type {
    display: none;
  }
}