.demo {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid var(--stroke);
  background: var(--panel);
  box-shadow: 0 25px 60px rgba(17,24,39,0.08);
  backdrop-filter: blur(10px);
}
.demo-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.demo-btn {
  cursor: pointer;
}
.demo-window {
  border: 1px solid var(--stroke);
  border-radius: 16px;
  padding: 16px;
  background: var(--card);
  display: grid;
  gap: 12px;
}
.chat-bubble {
  max-width: 100%;
  border-radius: 14px;
  padding: 12px 14px;
  line-height: 1.5;
  font-size: 15px;
  white-space: pre-line;
}
.chat-bubble.user {
  background: rgba(43,212,197,0.12);
  border: 1px solid rgba(43,212,197,0.35);
}
.chat-bubble.bot {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--stroke);
}
.demo-image {
  display: none;
  width: 100%;
  border-radius: 12px;
  border: 1px solid var(--stroke);
  background: #0b101d;
}