/* Wrapper */
.ytsc-wrap {
  position: relative;
  width: 100%;
  padding: 6px 44px; /* space for arrows */
  box-sizing: border-box;
}
/* Viewport with overflow */
.ytsc-viewport {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
/* Track */
.ytsc-track {
  display: flex;
  gap: 18px;
  padding: 8px 2px 14px;
}
/* Card — 5 on desktop, 2 on mobile */
.ytsc-card {
  flex: 0 0 calc((100% - 18px*4) / 5); /* 5 visible: 4 gaps */
  scroll-snap-align: start;
}
@media (max-width: 767px) {
  .ytsc-wrap { padding: 6px 36px; }
  .ytsc-card { flex: 0 0 calc((100% - 18px*1) / 2); } /* 2 visible: 1 gap */
}
/* Aspect & frame */
.ytsc-aspect {
  position: relative;
  width: 100%;
  aspect-ratio: 9/16;
  border-radius: 18px;
  overflow: hidden;
  background: #111;
  box-shadow: 0 6px 18px rgba(0,0,0,.22);
}
.ytsc-aspect iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
/* Arrows */
.ytsc-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  background: rgba(0,0,0,.55);
  color: #fff;
  display: grid;
  place-items: center;
}
.ytsc-prev { left: 6px; }
.ytsc-next { right: 6px; }
.ytsc-nav:hover { background: rgba(0,0,0,.75); }