body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f9f9f9;
}
nav {
  background: white;
  padding: 12px 24px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  padding: 0;
  margin: 0;
}
nav a {
  text-decoration: none;
  color: #333;
}
.hero {
  text-align: center;
  padding: 100px 20px;
}
.hero h1 {
  font-size: 3rem;
  color: #1a1a1a;
}
.hero p {
  font-size: 1.2rem;
  color: #555;
}
.cta-button {
  display: inline-block;
  margin-top: 20px;
  background: #0052cc;
  color: white;
  padding: 12px 24px;
  text-decoration: none;
  border-radius: 5px;
}
.chat-intro {
  text-align: center;
  padding: 50px 20px;
}
.chat-intro .bubble {
  background: #f1f1f1;
  padding: 12px 20px;
  margin: 20px auto;
  display: inline-block;
  border-radius: 20px;
}
#start-chat {
  background: #0052cc;
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 6px;
  cursor: pointer;
}
.chat-widget {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 320px;
  height: 480px;
  border: 1px solid #ccc;
  border-radius: 10px;
  background: white;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  display: flex;
  flex-direction: column;
  font-size: 14px;
  z-index: 1000;
}
.chat-header {
  background: #0052cc;
  color: white;
  padding: 12px;
  font-weight: bold;
  text-align: center;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
.chat-messages {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
}
.chat-form {
  display: flex;
  border-top: 1px solid #ccc;
}
.chat-form input {
  flex: 1;
  border: none;
  padding: 10px;
}
.chat-form button {
  background: #0052cc;
  border: none;
  color: white;
  padding: 0 15px;
}
.chat-messages div {
  margin-bottom: 10px;
  padding: 8px 12px;
  border-radius: 15px;
  max-width: 80%;
}
.chat-messages .user {
  background-color: #0052cc;
  color: white;
  align-self: flex-end;
}
.chat-messages .bot {
  background-color: #f1f0f0;
  color: #333;
  align-self: flex-start;
}