/* Botão flutuante */
#chat-button {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #0056b3;
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  font-size: 24px;
  cursor: pointer;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  z-index: 1000;
}
/* Janela do chat */
#chat-box {
  position: fixed;
  bottom: 90px;
  right: 20px;
  width: 320px;
  max-height: 500px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  display: none;
  flex-direction: column;
  overflow: hidden;
  font-family: Arial, sans-serif;
  z-index: 1000;
}
/* Cabeçalho */
#chat-header {
  background: #0056b3;
  color: #fff;
  padding: 12px;
  font-weight: bold;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
#chat-header span { font-size: 14px; }
#chat-close {
  cursor: pointer;
  font-size: 18px;
}
/* Corpo do chat */
#chat-messages {
  flex: 1;
  padding: 10px;
  overflow-y: auto;
  font-size: 14px;
  display: flex;
  flex-direction: column;
  min-height: 300px;
}
.bot-message {
  background: #f1f1f1;
  color: #000;
  padding: 8px;
  border-radius: 8px;
  margin: 6px 0;
  max-width: 80%;
  align-self: flex-start;
  word-wrap: break-word;
  line-height: 1.5;
}
.user-message {
  background: #ffcc00;
  color: #000;
  padding: 8px;
  border-radius: 8px;
  margin: 6px 0;
  max-width: 80%;
  align-self: flex-end;
  word-wrap: break-word;
}
.typing-indicator {
  background: #f1f1f1;
  color: #666;
  padding: 8px;
  border-radius: 8px;
  margin: 6px 0;
  max-width: 80%;
  align-self: flex-start;
  font-style: italic;
}
/* Input */
#chat-input-area {
  display: flex;
  border-top: 1px solid #ddd;
}
#chat-input {
  flex: 1;
  border: none;
  padding: 10px;
  font-size: 14px;
}
#chat-send {
  background: #0056b3;
  color: #fff;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  transition: background 0.3s;
}
#chat-send:hover {
  background: #004494;
}
#chat-send:disabled {
  background: #cccccc;
  cursor: not-allowed;
}