@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&display=swap');

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

body {
  font-family: 'Inter', sans-serif;
  background: #0b1120;
  color: #f1f5f9;
}

nav {
  position: fixed;
  top: 0;
  width: 100%;
  padding: 15px 40px;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

nav a {
  color: white;
  margin-right: 20px;
  text-decoration: none;
  font-weight: 600;
}

.hero {
  height: 100vh;
  background:
    linear-gradient(rgba(0,0,0,.75), rgba(0,0,0,.85)),
    url('https://images.unsplash.com/photo-1519681393784-d120267933ba');
  background-size: cover;
  background-position: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
}

.hero p {
  max-width: 700px;
  margin-top: 20px;
  font-size: 1.2rem;
  opacity: 0.85;
}

.btn {
  margin-top: 30px;
  padding: 14px 28px;
  background: #facc15;
  color: black;
  font-weight: 700;
  border-radius: 50px;
  text-decoration: none;
  display: inline-block;
}

.section {
  padding: 120px 10%;
}

.card {
  background: #111827;
  padding: 30px;
  border-radius: 15px;
  margin-top: 20px;
}

footer {
  text-align: center;
  padding: 30px;
  background: black;
}