.brainai-chat-wrapper {
  max-width: 800px;
  margin: 40px auto;
  background: rgba(0, 0, 0, 0.45);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  backdrop-filter: blur(18px);
  color: #f5f5f5;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.brainai-chat-header {
  padding: 12px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brainai-status {
  display: flex;
  align-items: center;
  font-size: 11px;
  opacity: 0.8;
}

.brainai-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3df08f;
  margin-right: 6px;
}

.brainai-chat-messages {
  padding: 16px;
  overflow-y: auto;
  max-height: 60vh;
  font-size: 14px;
}

.brainai-message {
  margin-bottom: 12px;
  display: flex;
}

.brainai-message.user .brainai-bubble {
  background: #1c4b82;
  margin-left: auto;
}

.brainai-message.assistant .brainai-bubble {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-right: auto;
}

.brainai-bubble {
  padding: 10px 12px;
  border-radius: 12px;
  max-width: 80%;
  white-space: pre-wrap;
}

.brainai-role-label {
  font-size: 10px;
  opacity: 0.6;
  margin-bottom: 2px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.brainai-chat-input {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 10px;
  display: flex;
  gap: 8px;
  align-items: center;
}

.brainai-chat-input textarea {
  flex: 1;
  resize: none;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.12);
  padding: 8px 10px;
  font-size: 14px;
  background: rgba(0,0,0,0.4);
  color: #f5f5f5;
  outline: none;
  max-height: 90px;
  min-height: 40px;
}

.brainai-chat-input button {
  border-radius: 999px;
  border: none;
  padding: 10px 18px;
  font-size: 13px;
  cursor: pointer;
  background: #1B2D2A;
  color: #f5f5f5;
  opacity: 0.95;
}

.brainai-chat-input button:disabled {
  opacity: 0.4;
  cursor: default;
}