* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  background-color: #f0f2f5;
}

.container {
  max-width: 1200px;
  margin: 20px auto;
  padding: 0 20px;
}

.chat-container {
  background-color: white;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.chat-header {
  background-color: #075e54;
  color: white;
  padding: 15px;
}

.chat-header h2 {
  margin-bottom: 10px;
}

.user-info {
  display: flex;
  gap: 10px;
}

.user-info select,
.user-info input,
.user-info button {
  padding: 5px 10px;
  border-radius: 5px;
  border: 1px solid #ddd;
}

.chat-messages {
  height: 400px;
  overflow-y: auto;
  padding: 20px;
}

.message {
  margin-bottom: 10px;
  padding: 10px;
  border-radius: 10px;
  max-width: 70%;
}

.message.sent {
  background-color: #dcf8c6;
  margin-left: auto;
}

.message.received {
  background-color: #fff;
  border: 1px solid #ddd;
}

.message img {
  max-width: 200px;
  border-radius: 5px;
}

.chat-input {
  padding: 15px;
  background-color: #f0f0f0;
  display: flex;
  gap: 10px;
}

.chat-input input[type='text'] {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}

.chat-input button {
  padding: 10px 20px;
  background-color: #075e54;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.chat-input button:hover {
  background-color: #128c7e;
}

.typing-indicator {
  font-style: italic;
  color: #666;
  margin-bottom: 10px;
}