body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #ffffff; /* white background */
  color: #0f3b6f; /* dark blue text */
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* Sticky Top Bar */
.back-home-sticky {
  position: sticky;
  top: 0;
  background-color: #0f3b6f; /* dark blue */
  padding: 12px 20px;
  z-index: 1000;
  text-align: left;
}

.back-home-sticky a {
  color: #ffffff;
  text-decoration: none;
  font-weight: bold;
  font-size: 16px;
  transition: opacity 0.3s ease;
}

.back-home-sticky a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* Header */
h2 {
  margin: 0;
  padding: 20px;
  background-color: #0f3b6f; /* dark blue */
  color: #ffffff; /* white text */
  text-align: center;
  border-bottom: 2px solid #0f3b6f;
}

/* Chat container */
#chat-container {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  background-color: #ffffff; /* white background */
}

/* Messages */
.message {
  margin: 10px 0;
  padding: 10px 14px;
  border-radius: 6px;
  max-width: 70%;
  word-wrap: break-word;
}
/* User message */
.user {
  background-color: #ebf3f6; /* sky blue */
  color: #0f3b6f; /* dark blue */
  align-self: flex-end;
  margin-left: auto;
  border-radius: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}


/* Bot message */
.bot {
  background-color: #ffffff; /* white */
  color: #0f3b6f; /* dark blue */
  border: 1px solid #0f3b6f;
  align-self: flex-start;
  margin-right: auto;
}

/* Input area */
#input-container {
  display: flex;
  padding: 10px;
  background-color: #ffffff;
  border-top: 2px solid #0f3b6f;
}

#user-input {
  flex: 1;
  padding: 10px;
  font-size: 16px;
  background-color: #ffffff;
  color: #0f3b6f;
  border: 1px solid #0f3b6f;
  border-radius: 4px;
}

#send-btn {
  background-color: #0f3b6f;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  margin-left: 10px;
  font-size: 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

#send-btn:hover {
  background-color: #112b55; /* slightly darker blue */
}

/* Responsive design */
@media (max-width: 600px) {
  h2 {
    font-size: 1.25rem;
    padding: 12px;
  }

  #chat-container {
    padding: 12px;
  }

  .message {
    font-size: 0.95rem;
    max-width: 100%;
  }

  #user-input {
    font-size: 0.95rem;
  }

  #send-btn {
    font-size: 0.95rem;
    padding: 10px;
  }
}