body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f7fb;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  padding: 15px 40px;
  background: #111;
  color: white;
}

header nav a {
  color: white;
  margin-left: 20px;
  text-decoration: none;
}

/* Hero */
.hero {
  text-align: center;
  padding: 100px 20px;
  background: linear-gradient(120deg, #111, #333);
  color: white;
}

.hero h1 {
  font-size: 40px;
}

.btn {
  display: inline-block;
  margin-top: 20px;
  padding: 12px 25px;
  background: #25D366;
  color: white;
  text-decoration: none;
  border-radius: 6px;
}

/* Services */
.services {
  padding: 60px;
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.card {
  background: white;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* About */
.about {
  padding: 60px;
  text-align: center;
}

/* Contact */
.contact {
  padding: 60px;
  text-align: center;
}

/* Chatbot Popup */
.chatbot {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 220px;
  background: white;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  overflow: hidden;
}

.chat-header {
  background: #25D366;
  color: white;
  padding: 10px;
  font-weight: bold;
}

.chat-body {
  padding: 10px;
}

.chat-body a {
  display: inline-block;
  margin-top: 10px;
  color: white;
  background: #111;
  padding: 8px 12px;
  text-decoration: none;
  border-radius: 5px;
}