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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  padding-top: 70px ;
}

header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #222;
  transition: background-color 0.3s ease;
  z-index: 1000;
  padding: 15px 0;
}

header.scrolled {
  background-color: #333;
}

nav ul {
  display: flex;
  justify-content: center;
  list-style: none;
  background-color: inherit;
}

nav ul li {
  margin: 0 15px;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-size: 18px;
  padding: 10px;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: yellow;
}

section {
  padding: 100px 20px;
  min-height: 100vh;
}

#home {
  background-color: #f5f5f5;
}

#features {
  background-color: #e0e0e0;
}

#about {
  background-color: #ccc;
}

#contact {
  background-color: #bbb;
}

/* Basic logo styling */
.logo {
  color: white;
  font-size: 24px;
  font-weight: bold;
  margin-left: 20px;
}

/* Hamburger icon */
.menu-toggle {
  display: none;
  font-size: 28px;
  color: white;
  cursor: pointer;
  margin-right: 20px;
}

/* Mobile nav (default hidden) */
@media (max-width: 768px) {
  nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  nav ul {
    flex-direction: column;
    background-color: #222;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    display: none;
  }

  nav ul.active {
    display: flex;
  }

  nav ul li {
    margin: 10px 0;
    text-align: center;
  }

  .menu-toggle {
    display: block;
  }
}