:root {
  --gc-bg: #0f2b1d;
  --gc-card: rgba(14, 22, 18, 0.96);
  --gc-text: #f5f6f7;
  --gc-muted: rgba(245,246,247,0.7);
  --gc-accent: #c8a96a;
  --gc-shadow: 0 16px 40px rgba(0,0,0,0.25);
  --gc-radius: 16px;
}

.grammar-chatbot {
  max-width: 900px;
  margin: 0 auto;
  background: var(--gc-card);
  border-radius: var(--gc-radius);
  padding: 24px;
  box-shadow: var(--gc-shadow);
  border: 1px solid rgba(255,255,255,0.08);
}

.grammar-chatbot__header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.grammar-chatbot__title {
  margin: 0;
  font-size: 1.4rem;
}

.grammar-chatbot__toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.grammar-chatbot__messages {
  max-height: 420px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px;
  border-radius: 12px;
  background: rgba(8, 12, 10, 0.6);
}

.grammar-chatbot__msg {
  display: flex;
}

.grammar-chatbot__msg--user {
  justify-content: flex-end;
}

.grammar-chatbot__bubble {
  max-width: 86%;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
  color: var(--gc-text);
  font-size: 0.95rem;
  line-height: 1.55;
}

.grammar-chatbot__msg--user .grammar-chatbot__bubble {
  background: rgba(200,169,106,0.18);
  border: 1px solid rgba(200,169,106,0.4);
}

.grammar-chatbot__bubble a {
  color: var(--gc-accent);
  text-decoration: underline;
}

.grammar-chatbot__composer {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

.grammar-chatbot__input {
  flex: 1;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.08);
  color: var(--gc-text);
  padding: 10px 12px;
}

.grammar-chatbot__send {
  border-radius: 10px;
  border: none;
  background: var(--gc-accent);
  color: #0b1a12;
  font-weight: 600;
  padding: 10px 14px;
  cursor: pointer;
}

.grammar-chatbot__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.grammar-chatbot__chip {
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(255,255,255,0.08);
  color: var(--gc-text);
  padding: 6px 12px;
  font-size: 0.85rem;
  cursor: pointer;
}

.grammar-chatbot__note {
  color: var(--gc-muted);
  font-size: 0.85rem;
  margin-top: 10px;
}

@media (max-width: 480px) {
  .grammar-chatbot { padding: 18px; }
  .grammar-chatbot__messages { max-height: 300px; }
  .grammar-chatbot__title { font-size: 1.15rem; }
}