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

body {
  font-family: Arial, sans-serif;
  background: #0b1020;
  color: white;
  line-height: 1.6;
}

header {
  background: #070b16;
  padding: 20px 8%;
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: bold;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 25px;
}

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

.hero {
  padding: 100px 8%;
  text-align: center;
  background: linear-gradient(135deg, #111827, #4c1d95);
}

.hero h1 {
  font-size: 52px;
  margin-bottom: 20px;
}

.hero p {
  max-width: 650px;
  margin: 0 auto 30px;
  color: #d1d5db;
}

.btn,
button {
  background: #7c3aed;
  color: white;
  padding: 12px 22px;
  border: none;
  border-radius: 30px;
  text-decoration: none;
  cursor: pointer;
  font-weight: bold;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
}

section {
  padding: 70px 8%;
}

h2 {
  font-size: 36px;
  margin-bottom: 30px;
  text-align: center;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.video-card {
  background: #111827;
  padding: 20px;
  border-radius: 16px;
}

.video-card iframe {
  width: 100%;
  height: 250px;
  border: none;
  border-radius: 12px;
}

.video-card h3 {
  margin-top: 15px;
}

.categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.categories div {
  background: #111827;
  padding: 25px;
  border-radius: 14px;
  text-align: center;
  font-weight: bold;
}

#about p {
  max-width: 750px;
  margin: auto;
  text-align: center;
  color: #d1d5db;
}

form {
  max-width: 600px;
  margin: auto;
  display: grid;
  gap: 15px;
}

input,
textarea {
  padding: 14px;
  border-radius: 10px;
  border: none;
  font-size: 16px;
}

footer {
  text-align: center;
  padding: 25px;
  background: #070b16;
  color: #9ca3af;
}

@media (max-width: 768px) {
  .navbar,
  .nav-links {
    flex-direction: column;
  }

  .video-grid,
  .categories {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    font-size: 38px;
  }
}