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

body {
  font-family: 'Arial', sans-serif;
  background-color: #f4f4f4;
  color: #333;
}

header {
  background-color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo {
  height: 70px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
}

nav a {
  text-decoration: none;
  color: #007bff;
  font-weight: bold;
  transition: color 0.3s ease;
}

nav a:hover {
  color: #0056b3;
}

.hero {
  background: linear-gradient(135deg, #007bff, #00aaff);
  color: white;
  text-align: center;
  padding: 100px 20px;
}

.hero h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2em;
  margin-bottom: 20px;
}

button {
  background-color: white;
  color: #007bff;
  border: none;
  padding: 12px 25px;
  border-radius: 25px;
  font-size: 1em;
  cursor: pointer;
  transition: all 0.3s ease;
}

button:hover {
  background-color: #0056b3;
  color: white;
}

section {
  padding: 60px 20px;
  text-align: center;
}

.cards {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 30px;
}

.card {
  background-color: white;
  padding: 30px;
  border-radius: 10px;
  width: 250px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
}

footer {
  background-color: #007bff;
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}

.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25D366;
  color: white;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 6px rgba(0,0,0,0.2);
  z-index: 1000;
}

.whatsapp-float i {
  font-size: 28px;
}