:root{
  --yt-panel-bg: #ffffff;
  --yt-ink: #111827;
  --yt-muted: #6b7280;
  --yt-soft: #f9fafb;
  --yt-ring: #e5e7eb;
}

.yt-tool{
  margin-top:1.5rem;
}

.yt-layout{
  display:grid;
  grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  gap:1.75rem;
  align-items:flex-start;
}

.yt-panel{
  background:var(--yt-panel-bg);
  border-radius:18px;
  border:1px solid var(--yt-ring);
  padding:1.5rem 1.75rem;
  box-shadow:0 8px 24px rgba(15,23,42,.06);
}

.yt-input-panel h2,
.yt-preview-panel h2{
  margin-bottom:.35rem;
}

.helper-text{
  font-size:.9rem;
  color:var(--yt-muted);
  margin-bottom:1.25rem;
}

.yt-actions{
  display:flex;
  gap:.75rem;
  flex-wrap:wrap;
  margin-top:1rem;
}

.yt-note{
  margin-top:1.25rem;
  font-size:.85rem;
  line-height:1.5;
  color:var(--yt-muted);
  padding:0.85rem 1rem;
  background:var(--yt-soft);
  border-radius:10px;
  border:1px dashed var(--yt-ring);
}

.yt-placeholder{
  text-align:left;
  font-size:.95rem;
  color:var(--yt-muted);
}

.yt-placeholder ul{
  margin-top:.75rem;
  padding-left:1.25rem;
}

.yt-results[hidden]{
  display:none;
}

.yt-video-id{
  display:flex;
  align-items:center;
  gap:.5rem;
  margin-bottom:1rem;
  font-size:.9rem;
  color:var(--yt-muted);
}

.yt-video-id code{
  background:#000;
  color:#f9fafb;
  padding:.15rem .5rem;
  border-radius:6px;
  font-size:.82rem;
}

.yt-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:1rem;
}

.yt-thumb-card{
  border-radius:14px;
  border:1px solid var(--yt-ring);
  overflow:hidden;
  background:#fff;
  display:flex;
  flex-direction:column;
}

.yt-thumb-card img{
  width:100%;
  display:block;
  aspect-ratio:16/9;
  object-fit:cover;
  background:#000;
}

.yt-thumb-body{
  padding:.85rem .9rem 1rem;
  display:flex;
  flex-direction:column;
  gap:.35rem;
}

.yt-thumb-meta{
  display:flex;
  justify-content:space-between;
  align-items:center;
  font-size:.8rem;
  color:var(--yt-muted);
}

.yt-thumb-size{
  font-weight:600;
  color:var(--yt-ink);
}

.yt-thumb-actions{
  margin-top:.4rem;
  display:flex;
  flex-wrap:wrap;
  gap:.5rem;
}

.yt-download-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:.45rem .8rem;
  border-radius:999px;
  border:1px solid var(--yt-ring);
  font-size:.8rem;
  font-weight:500;
  text-decoration:none;
  transition:background .15s ease, transform .15s ease, box-shadow .15s ease;
}

.yt-download-primary{
  background:var(--primary);
  color:#fff;
  border-color:var(--primary);
}

.yt-download-btn:hover{
  transform:translateY(-1px);
  box-shadow:0 8px 16px rgba(15,23,42,.12);
}

.yt-download-secondary{
  background:#fff;
  color:var(--yt-ink);
}

.bullet-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:.75rem 1.25rem;
  padding-left:1rem;
}

.bullet-grid li{
  margin-left:.75rem;
}

/* Responsive */
@media (max-width: 960px){
  .yt-layout{
    grid-template-columns:minmax(0,1fr);
  }
}

@media (max-width: 640px){
  .yt-panel{
    padding:1.25rem 1.2rem;
  }
}