body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f0f2f5;
}

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.auth-container {
  background: white;
  padding: 20px;
  border-radius: 8px;
  width: 300px;
  text-align: center;
}

.auth-container input {
  width: 100%;
  margin: 10px 0;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.auth-container button {
  width: 100%;
  padding: 10px;
  background: #0078ff;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

#chat-container {
  max-width: 600px;
  margin: 20px auto;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  display: none;
}

#chat-header {
  padding: 15px;
  border-bottom: 1px solid #ddd;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#chat-messages {
  height: 400px;
  overflow-y: auto;
  padding: 15px;
}

.message {
  margin: 10px 0;
  padding: 10px;
  border-radius: 8px;
  max-width: 70%;
}

.message.sent {
  background: #0078ff;
  color: white;
  margin-left: auto;
}

.message.received {
  background: #e5e5ea;
  color: black;
  margin-right: auto;
}

#chat-input {
  display: flex;
  padding: 15px;
  border-top: 1px solid #ddd;
}

#chat-input input {
  flex: 1;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 20px;
  margin-right: 10px;
}

#chat-input button {
  padding: 10px 20px;
  background: #0078ff;
  color: white;
  border: none;
  border-radius: 20px;
  cursor: pointer;
}

#admin-container {
  max-width: 800px;
  margin: 20px auto;
  padding: 20px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
}

th,
td {
  padding: 10px;
  border: 1px solid #ddd;
  text-align: left;
}

button {
  padding: 5px 10px;
  background: #ff4444;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}