#nabds-chatbot-button {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: none;
  background: #111827;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  z-index: 999999;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}

#nabds-chatbot-window {
  display: none;
  position: fixed;
  right: 24px;
  bottom: 100px;
  width: 360px;
  max-width: calc(100vw - 32px);
  height: 520px;
  max-height: calc(100vh - 140px);
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 18px;
  overflow: hidden;
  z-index: 999999;
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
  font-family: Arial, Helvetica, sans-serif;
}

#nabds-chatbot-header {
  background: #111827;
  color: #fff;
  padding: 16px;
  font-size: 16px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#nabds-chatbot-close {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
}

#nabds-chatbot-messages {
  height: 370px;
  padding: 14px;
  overflow-y: auto;
  background: #f9fafb;
}

.nabds-msg {
  margin-bottom: 12px;
  padding: 10px 12px;
  border-radius: 14px;
  line-height: 1.45;
  font-size: 14px;
  white-space: pre-wrap;
}

.nabds-user-msg {
  background: #111827;
  color: #fff;
  margin-left: 48px;
  text-align: right;
}

.nabds-bot-msg {
  background: #fff;
  color: #1f2937;
  margin-right: 48px;
  border: 1px solid #e5e7eb;
}

#nabds-chatbot-input-area {
  display: flex;
  border-top: 1px solid #e5e7eb;
  background: #fff;
}

#nabds-chatbot-input {
  flex: 1;
  border: none;
  outline: none;
  padding: 14px;
  font-size: 14px;
}

#nabds-chatbot-send {
  border: none;
  background: #111827;
  color: #fff;
  padding: 0 18px;
  cursor: pointer;
  font-weight: 700;
}

@media (max-width: 480px) {
  #nabds-chatbot-window {
    right: 12px;
    bottom: 88px;
    width: calc(100vw - 24px);
    height: 520px;
  }

  #nabds-chatbot-button {
    right: 16px;
    bottom: 16px;
  }
}