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

/* Global styles */
body {
  font-family: Arial, sans-serif;
  line-height: 1.5;
  color: #222;
  background: #f5f5f7;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Top bar */
.top-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 8%;
  background: #0f172a;
  color: #f9fafb;
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo {
  font-weight: 700;
  font-size: 1.25rem;
}

.nav-links a {
  margin-left: 20px;
  font-size: 0.95rem;
  opacity: 0.9;
}

.nav-links a:hover {
  opacity: 1;
}

/* Hero section */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 40px;
  padding: 60px 8%;
  align-items: center;
  background: linear-gradient(135deg, #0f172a, #1d4ed8);
  color: #f9fafb;
}

.hero-text h1 {
  font-size: 2.4rem;
  margin-bottom: 16px;
}

.hero-text p {
  font-size: 1.05rem;
  margin-bottom: 24px;
  max-width: 420px;
}

.btn-primary {
  display: inline-block;
  padding: 10px 22px;
  border-radius: 999px;
  background: #facc15;
  color: #111827;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary:hover {
  background: #eab308;
}

/* Hero video */
.hero-video video {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.35);
}

/* Sections */
.about,
.videos,
.contact {
  padding: 50px 8%;
  background: #f5f5f7;
}

.about h2,
.videos h2,
.contact h2 {
  font-size: 1.8rem;
  margin-bottom: 16px;
  color: #0f172a;
}

.about p,
.contact p {
  max-width: 720px;
  margin-bottom: 8px;
  color: #374151;
}

/* Video cards */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.video-card {
  background: #ffffff;
  border-radius: 12px;
  padding: 18px 16px;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
}

.video-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: #111827;
}

.video-card p {
  font-size: 0.95rem;
  color: #4b5563;
}

/* Contact */
.contact p {
  font-size: 0.98rem;
}

/* Footer */
.footer {
  text-align: center;
  padding: 16px 8%;
  background: #0f172a;
  color: #9ca3af;
  font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 40px;
    padding-bottom: 40px;
  }

  .hero-text {
    order: 1;
  }

  .hero-video {
    order: 2;
  }

  .top-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-links {
    margin-top: 8px;
  }

  .nav-links a {
    margin-left: 0;
    margin-right: 16px;
  }
}

@media (max-width: 600px) {
  .hero-text h1 {
    font-size: 1.9rem;
  }

  .top-bar {
    padding-inline: 5%;
  }

  .about,
  .videos,
  .contact {
    padding-inline: 5%;
  }
}