* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  line-height: 1.6;
  color: #333;
}

.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
}

/* Navbar */
header {
  background: #0f172a;
  color: white;
  padding: 15px 0;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

/* Hero */
.hero {
  background: linear-gradient(135deg, #2563eb, #1e40af);
  color: white;
  text-align: center;
  padding: 100px 20px;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.hero p {
  margin-bottom: 20px;
}

.btn {
  background: white;
  color: #2563eb;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
}

/* Sections */
.section {
  padding: 60px 20px;
}

.section.light {
  background: #f1f5f9;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.card {
  background: white;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0px 5px 15px rgba(0,0,0,0.05);
  transition: 0.3s;
}

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

/* Footer */
footer {
  background: #0f172a;
  color: white;
  text-align: center;
  padding: 20px;
}

/* WhatsApp Button */
.whatsapp {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25d366;
  color: white;
  padding: 15px;
  border-radius: 50%;
  text-decoration: none;
  font-size: 20px;
}