body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: white;
  background: #000;
  overflow: hidden;
}

.video-container {
  text-align: center;
  margin-top: 2rem;
}

.background-video video {
  position: fixed;
  top: 0;
  left: 0;
  width: 90%;
  height: 720px;
  object-fit: cover;
  z-index: -1;
}

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(0, 0, 0, 0.4);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: #fff;
}

.logo {
  font-weight: bold;
  font-size: 1.5rem;
}

.hero {
  position: relative;
  top: 30vh;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin: 0;
}

.hero p {
  font-size: 1.1rem;
  margin: 1rem 0 2rem;
}

.buttons a {
  padding: 0.8rem 1.5rem;
  margin: 0 1rem;
  text-decoration: none;
  border-radius: 5px;
  font-weight: bold;
}

.github-btn {
  background-color: #111;
  color: #fff;
  border: 1px solid #fff;
}

.coffee-btn {
  background-color: #ffdd57;
  color: #000;
}