body {
  margin: 0;
  font-family: "Inter", sans-serif;
  background: #f5f7fb;
}

.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.header, .footer {
  padding: 8px 12px;
  text-align: center;
  background: white;
  border-bottom: 1px solid #ddd;
}

.footer {
  border-top: 1px solid #ddd;
  font-size: 12px;
  color: #666;
}

.chat-window {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.chat-body {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
}

.bubble-row {
  display: flex;
  margin-bottom: 12px;
}

.bubble-row.user { justify-content: flex-end; }
.bubble-row.bot { justify-content: flex-start; }

.bubble {
  padding: 10px 14px;
  border-radius: 16px;
  max-width: 70%;
  font-size: 14px;
  animation: fade 0.2s ease-in-out;
}

.bubble-row.user .bubble {
  background: #4caf50;
  color: white;
}

.bubble-row.bot .bubble {
  background: #2196f3;
  color: white;
}

.chat-input {
  padding: 10px;
  display: flex;
  gap: 6px;
  background: white;
  border-top: 1px solid #ddd;
}

.chat-input input {
  flex: 1;
  padding: 10px;
  font-size: 14px;
  border-radius: 8px;
  border: 1px solid #bbb;
}

.chat-input button {
  padding: 8px 16px;
  background: #2196f3;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

.suggested {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  padding: 8px;
}

.suggested button {
  padding: 4px 10px;
  font-size: 12px;
  border-radius: 6px;
  border: 1px solid #bbb;
  background: white;
  cursor: pointer;
}

.citation-panel {
  background: #fff7e6;
  border-top: 1px solid #e6c77b;
  padding: 8px;
  font-size: 13px;
}