:root{
  --primary:#0066FF;
  --deep:#0048CC;
  --navy:#001A33;
  --grey:#687280;
  --light:#F3F6FA;
}

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

body{
  font-family:'Poppins',sans-serif;
  color:var(--navy);
  background:var(--light);
  line-height:1.6;
}

.container{
  width:90%;
  max-width:1200px;
  margin:auto;
}

.navbar{
  position:fixed;
  width:100%;
  top:0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:20px 60px;
  background:rgba(0,26,51,0.95);
  z-index:999;
}

.logo{
  color:white;
  font-size:24px;
  font-weight:700;
}

nav a{
  color:white;
  margin-left:25px;
  text-decoration:none;
  font-weight:600;
}

.hero{
  height:100vh;
  background:
    linear-gradient(rgba(0,26,51,0.75),rgba(0,72,204,0.75)),
    url('Drone1.png') center/cover no-repeat;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  color:white;
  padding:20px;
}

.hero-content{
  max-width:850px;
}

.hero h1{
  font-size:64px;
  margin-bottom:20px;
}

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

.tagline{
  color:#4da3ff;
  margin-bottom:30px;
  font-weight:600;
}

.hero-buttons{
  display:flex;
  justify-content:center;
  gap:20px;
  flex-wrap:wrap;
}

.btn{
  padding:14px 28px;
  border-radius:12px;
  text-decoration:none;
  display:inline-block;
  transition:0.3s;
  font-weight:600;
}

.primary{
  background:var(--primary);
  color:white;
}

.primary:hover{
  background:var(--deep);
}

.secondary{
  border:2px solid white;
  color:white;
}

section{
  padding:100px 0;
}

.about h2,
.courses h2,
.audience h2,
.contact h2,
.services h2,
.cta h2{
  font-size:42px;
  margin-bottom:20px;
}

.cards,
.course-grid,
.tiles,
.service-grid{
  display:grid;
  gap:25px;
}

.cards{
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  margin-top:40px;
}

.card{
  background:white;
  padding:30px;
  border-radius:20px;
  box-shadow:0 10px 30px rgba(0,0,0,0.08);
}

.courses{
  background:var(--navy);
  color:white;
}

.section-sub{
  color:#4da3ff;
  margin-bottom:40px;
}

.course-grid{
  grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
}

.course-card{
  background:#083a8c;
  padding:35px;
  border-radius:20px;
}

.featured{
  border:3px solid var(--primary);
}

.badge{
  background:var(--primary);
  padding:8px 14px;
  border-radius:30px;
  display:inline-block;
  margin-bottom:20px;
}

.course-card ul{
  margin:20px 0 20px 20px;
}

.tiles{
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  margin-top:40px;
}

.tile{
  background:white;
  padding:25px;
  text-align:center;
  border-radius:16px;
  box-shadow:0 8px 20px rgba(0,0,0,0.08);
  font-weight:600;
}

.services{
  background:var(--deep);
  color:white;
}

.service-grid{
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  margin-top:40px;
}

.cta{
  background:linear-gradient(135deg,var(--primary),var(--navy));
  color:white;
  text-align:center;
}

.white-btn{
  background:white;
  color:var(--primary);
  margin-top:20px;
}

.contact form{
  display:grid;
  gap:18px;
  margin-top:30px;
}

input,select,textarea{
  padding:16px;
  border-radius:10px;
  border:1px solid #ccc;
  font-family:'Poppins',sans-serif;
}

footer{
  background:var(--navy);
  color:white;
  padding:50px 30px 20px;
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:30px;
}

.footer-tag{
  color:#4da3ff;
}

.bottom-bar{
  margin-top:30px;
  text-align:center;
  color:var(--grey);
}

@media(max-width:768px){
  .navbar{
    padding:15px 20px;
    flex-direction:column;
  }

  nav{
    margin-top:10px;
  }

  .hero h1{
    font-size:42px;
  }

  section{
    padding:80px 0;
  }
}