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

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 50px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-weight: bold;
  font-size: 24px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 30px;
}

.nav-links li a {
  text-decoration: none;
  color: #333;
  font-size: 16px;
  transition: color 0.3s;
}

.nav-links li a:hover {
  color: #007bff;
}

/* Hero Section */
.hero {
  background: url('hero.jpg');
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
  height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
}

.overlay {
  color: #fff;
  z-index: 1;
  max-width: 700px;
}


.subtitle {
  color: #00aaff;
  font-weight: bold;
  margin-bottom: 10px;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 15px;
}

.description {
  font-size: 18px;
  margin-bottom: 25px;
}

.btn {
  background: #00aaff;
  color: #fff;
  text-decoration: none;
  padding: 12px 25px;
  border-radius: 5px;
  font-weight: bold;
  transition: background 0.3s;
}

.btn:hover {
  background: #0088cc;
}

/* Cards Section */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  padding: 50px;
  background: #f8f8f8;
  margin-top: -60px;
}

.card {
  background: #fff;
  border-radius: 8px;
  padding: 30px 20px;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.card h3 {
  margin-bottom: 15px;
  font-size: 20px;
}

.card p {
  font-size: 14px;
  color: #555;
}

.icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 15px;
  border-radius: 8px;
}

.icon.green {
  background: #4CAF50;
}

.icon.blue {
  background: #2196F3;
}

.icon.red {
  background: #E91E63;
}

.card.blue.active {
  background: #ffffff;
  color: #000000;
}

.card.blue.active p {
  color: #000000;
}