/* --- Help chat widget (chat-widget.js) --- */
#lk-chat .lk-chat-bubble {
  position: fixed; bottom: 20px; right: 20px; z-index: 900;
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--color-accent); color: #fff; border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-hover); transition: background var(--transition);
}
#lk-chat .lk-chat-bubble:hover { background: var(--color-accent-hover); }
#lk-chat .lk-chat-panel {
  position: fixed; bottom: 88px; right: 20px; z-index: 901;
  width: 340px; max-width: calc(100vw - 32px); max-height: 70vh;
  display: flex; flex-direction: column;
  background: var(--color-bg-card); border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-hover); overflow: hidden;
}
#lk-chat .lk-chat-panel[hidden] { display: none; }
#lk-chat .lk-chat-head {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0.9rem 1rem; background: var(--color-bg-raised);
  border-bottom: 1px solid var(--color-border);
}
#lk-chat .lk-chat-head strong { display: block; color: var(--color-text); font-size: 0.95rem; }
#lk-chat .lk-chat-head span { color: var(--color-text-dim); font-size: 0.75rem; }
#lk-chat .lk-chat-close { background: none; border: none; color: var(--color-text-muted); font-size: 1.4rem; cursor: pointer; line-height: 1; }
#lk-chat .lk-chat-log { flex: 1; overflow-y: auto; padding: 1rem; display: flex; flex-direction: column; gap: 0.6rem; min-height: 140px; }
#lk-chat .lk-chat-msg { max-width: 85%; padding: 0.55rem 0.8rem; border-radius: var(--radius-md); font-size: 0.88rem; line-height: 1.45; white-space: pre-wrap; overflow-wrap: break-word; }
#lk-chat .lk-chat-bot { background: var(--color-surface); color: var(--color-text); align-self: flex-start; }
#lk-chat .lk-chat-user { background: var(--color-accent); color: #fff; align-self: flex-end; }
#lk-chat .lk-chat-starters { display: flex; flex-wrap: wrap; gap: 0.4rem; padding: 0 1rem 0.6rem; }
#lk-chat .lk-chat-starters[hidden] { display: none; }
#lk-chat .lk-chat-starters button {
  background: var(--color-bg-input); color: var(--color-text-muted);
  border: 1px solid var(--color-border-light); border-radius: 999px;
  padding: 0.35rem 0.7rem; font-size: 0.78rem; cursor: pointer;
}
#lk-chat .lk-chat-starters button:hover { color: var(--color-text); border-color: var(--color-accent); }
#lk-chat .lk-chat-form { display: flex; gap: 0.5rem; padding: 0.7rem 1rem; border-top: 1px solid var(--color-border); }
#lk-chat .lk-chat-form input {
  flex: 1; background: var(--color-bg-input); border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm); color: var(--color-text); padding: 0.5rem 0.7rem; font-size: 0.88rem;
}
#lk-chat .lk-chat-form button {
  background: var(--color-accent); color: #fff; border: none;
  border-radius: var(--radius-sm); padding: 0.5rem 0.9rem; font-size: 0.88rem; cursor: pointer;
}
#lk-chat .lk-chat-form button:hover { background: var(--color-accent-hover); }
#lk-chat .lk-chat-foot { padding: 0.5rem 1rem 0.8rem; font-size: 0.72rem; color: var(--color-text-dim); }
#lk-chat .lk-chat-foot a { color: var(--color-text-muted); }
@media (max-width: 480px) {
  #lk-chat .lk-chat-panel { right: 8px; left: 8px; width: auto; bottom: 84px; max-height: 65vh; }
}