/* ViCamBachGiai — bounded reader-signal feed. Scope is intentionally limited to #tin-hieu. */
#tin-hieu .sig-board.signal-window-ready{
  overflow: hidden;
}

#tin-hieu .sig-board.signal-window-ready .sig-list{
  max-height: clamp(32rem, 68dvh, 44rem);
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--accent) 34%, transparent) transparent;
  padding-right: .2rem;
  scroll-behavior: smooth;
}

#tin-hieu .sig-board.signal-window-ready .sig-list::-webkit-scrollbar{ width: 5px; }
#tin-hieu .sig-board.signal-window-ready .sig-list::-webkit-scrollbar-track{ background: transparent; }
#tin-hieu .sig-board.signal-window-ready .sig-list::-webkit-scrollbar-thumb{
  background: color-mix(in srgb, var(--accent) 32%, transparent);
  border-radius: 999px;
}

/* Existing card design is preserved; only very long copy is clamped inside the bounded feed. */
#tin-hieu .sig-board.signal-window-ready .sig-card blockquote,
#tin-hieu .sig-board.signal-window-ready .sig-quote{
  max-height: 7.2em;
  overflow: hidden;
}

#tin-hieu .sig-board.signal-window-ready .sig-card .sig-text,
#tin-hieu .sig-board.signal-window-ready .sig-card > p{
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

#tin-hieu .sig-board.signal-window-ready .sig-more{
  display: none !important;
}

#tin-hieu .sig-scroll-status{
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .6rem .8rem .45rem;
  color: var(--muted);
  font-size: .76rem;
  text-align: center;
}

#tin-hieu .sig-scroll-status::before{
  content: "";
  width: .42rem;
  height: .42rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 68%, transparent);
  box-shadow: 0 0 10px color-mix(in srgb, var(--accent) 28%, transparent);
}

#tin-hieu .sig-scroll-status.is-done::before{
  opacity: .35;
  box-shadow: none;
}

@media (max-width: 640px){
  #tin-hieu .sig-board.signal-window-ready .sig-list{
    max-height: 70dvh;
    padding-right: .1rem;
  }
}

@media (orientation: landscape) and (max-height: 600px){
  #tin-hieu .sig-board.signal-window-ready .sig-list{
    max-height: 72dvh;
  }
}