* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: #0f0f23;
  color: #e0e0ff;
}
.container { max-width: 900px; margin: 0 auto; padding: 20px; }
header { text-align: center; margin-bottom: 24px; }
h1 { margin: 0; font-size: 2.2rem; }
h2 { margin: 0 0 12px; font-size: 1.3rem; }
.card {
  background: #18182b;
  border: 1px solid #2a2a4a;
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 18px;
}
form { display: flex; flex-wrap: wrap; gap: 10px; }
input, select {
  background: #0f0f23;
  border: 1px solid #3a3a6a;
  color: #e0e0ff;
  padding: 10px 12px;
  border-radius: 8px;
  flex: 1 1 180px;
}
button, .btn {
  background: #4f46e5;
  color: white;
  border: none;
  padding: 10px 16px;
  border-radius: 8px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:hover, .btn:hover { background: #4338ca; }
.btn-google { background: #db4437; }
.btn-google:hover { background: #c53929; }
.hint { font-size: 0.85rem; color: #8888aa; margin-top: 8px; }
.section-header { display: flex; justify-content: space-between; align-items: center; }
#channels, #videos, #search-results { margin-top: 12px; }
.channel, .video {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  border-bottom: 1px solid #2a2a4a;
}
.channel:last-child, .video:last-child { border-bottom: none; }
.thumb { width: 120px; height: 68px; object-fit: cover; border-radius: 6px; background: #2a2a4a; }
.info { flex: 1; }
.title { font-weight: 600; margin-bottom: 4px; }
.meta { font-size: 0.85rem; color: #8888aa; }
.badge {
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 4px;
  text-transform: uppercase;
}
.badge-completed { background: #16a34a; }
.badge-downloading { background: #2563eb; }
.badge-failed { background: #dc2626; }
.badge-pending { background: #6b7280; }
#status {
  margin-top: 12px;
  padding: 10px;
  border-radius: 8px;
  display: none;
}
#status.show { display: block; }
#status.success { background: #14532d; }
#status.error { background: #7f1d1d; }