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

body {
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: #f9fafb;
  color: #333;
}
#about{
    height: 200px;
    width: auto;
    padding: 20px;
    text-align: center;
   
    background-image: url(./abus.jpg);
}
header {
  background-image: url(./nvbrimg.jpg);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 10px 0;
  box-shadow: 0 2px 6px rgba(100, 26, 26, 0.1);
}
.container {
  max-width: 1100px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  color: #e2e8f0;
}

.logo {
  width: 50px;
  border-radius: 50%;
}
 nav {
      background-color: #333;
      color: #fff;
      
      position: relative;
    }

    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background-image: url(./nvbrimg.jpg);
    }

    .name{
      font-size: 20px;
      margin-right: 550px;
      color: #051b4e;
      font-weight: 900;
    }

    .nav-links {
      display: flex;
      gap: 20px;
    }

    .nav-links a {
      color: rgb(15, 14, 14);
      text-decoration: none;
      font-size: 16px;
      font-weight: 700;
      transition: color 0.3s;
    }
  .nav-links a:hover {
      color: #5206f7;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      cursor: pointer;
      gap: 5px;
    }

    .hamburger span {
      height: 3px;
      width: 25px;
      background: white;
    }
   /* Responsive CSS */
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        right: 20px;
        background: #444;
        padding: 10px;
        border-radius: 5px;
      }

      .nav-links.active {
        display: flex;
      }

      .hamburger {
        display: flex;
      }
    }


.hero {
  background-image: url(./fact.jpg);
  height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  position: relative;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.5);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 48px;
  margin-bottom: 10px;
}

.hero p {
  font-size: 20px;
}

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

.section h2 {
  font-size: 32px;
  margin-bottom: 20px;
  color: #1e293b;
}

.section p {
  max-width: 800px;
  margin: 0 auto 30px;
  font-size: 18px;
}

.dark {
  background: #FAF6E9;
}

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

.card {
  
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  width: 300px;
  padding: 20px;
  text-align: left;
  color: #f9fafb;
}
 #pu{
    background-image: url(./pu.jpg);
    width: 300px;
 }
 #bnd{
    background-image: url(./bn2.jpg);
    background-size: auto;    
    color: #faf7f7;
    font-weight: 500px;
 }
 #memory{
    background-image: url(./m3.jpg);
    background-size: auto;
     background-repeat: no-repeat;
     color: #0f172a;
 }
.card img {
  width: 100%;
  border-radius: 8px;
  margin-bottom: 15px;
}

.download-btn {
  background: #0f172a;
  color: white;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 16px;
  text-decoration: none;
}

.download-btn:hover {
  background: #1e40af;
}

.contact {
  background: #f1f5f9;
}

.contact a {
  color: #1e3a8a;
  text-decoration: none;
}

.whatsapp-btn {
  display: inline-block;
  margin-top: 20px;
  background-color: #25D366;
  color: white;
  padding: 12px 24px;
  border-radius: 30px;
  text-decoration: none;
  font-size: 18px;
}

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

/* Responsive for mobile screens */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  nav ul {
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero p {
    font-size: 16px;
  }

  .cards {
    flex-direction: column;
    align-items: center;
  }

  .card {
    width: 90%;
  }

  .download-btn,
  .whatsapp-btn {
    width: 90%;
    font-size: 18px;
  }
}