* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body, html {
  font-family: 'Poppins', sans-serif;
  scroll-behavior: smooth;
  overflow-x: hidden;
  color: #fff;
}
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
  z-index: 1000;
}
.logo {
  font-size: 1.7rem;
  color: #fff;
  font-weight: 600;
}
nav ul {
  list-style: none;
  display: flex;
  gap: 30px;
}
nav a {
  text-decoration: none;
  color: #fff;
  font-weight: 500;
  transition: color 0.3s ease;
}
nav a:hover {
  color: #f7b733;
}
.section {
  height: 100vh;
  background-size: cover;
  background-position: center;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
}
.overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0, 0, 0, 0.6);
  z-index: 0;
}
.overlay.dark {
  background: rgba(0, 0, 0, 0.8);
}
.content {
  position: relative;
  z-index: 1;
  max-width: 900px;
}
h1, h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  text-shadow: 2px 2px 5px rgba(0,0,0,0.6);
}
p, li {
  font-size: 1.2rem;
  line-height: 1.8;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}
ul.features {
  list-style: none;
  padding: 0;
  text-align: left;
  margin-top: 20px;
}
ul.features li {
  margin-bottom: 12px;
}
.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25d366;
  color: white;
  font-size: 24px;
  padding: 12px 16px;
  border-radius: 50%;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  z-index: 9999;
}
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
  }
  nav ul {
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
  }
  h1, h2 {
    font-size: 1.8rem;
  }
  p, li {
    font-size: 1rem;
  }
}