body {
  background: #0f172a;
  color: #f1f5f9;
  font-family: 'DM Sans', sans-serif;
  line-height: 1.6;
}

/*  Navigation */
.main-nav {
  background: linear-gradient(135deg, #1e293b, #0f172a);
}
.nav-link {
  color: #f1f5f9;
  font-weight: 500;
}
.nav-link:hover {
  color: #6366f1;
}

/*  Hero */
.hero {
  background: #1e293b;
}
.hero-btn {
  background: linear-gradient(135deg, #3b82f6, #6366f1);
  color: #fff;
  padding: 12px 28px;
  border-radius: 12px;
  font-weight: bold;
  text-decoration: none;
  transition: transform 0.3s;
}
.hero-btn:hover {
  transform: scale(1.05);
  opacity: 0.9;
}
.gradient-text {
  background: linear-gradient(135deg, #6366f1, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

/*  About Section */
.about-section {
  background: #0f172a;
}
.about-text {
  color: #cbd5e1;
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.2rem;
}

/*  Video Section */
.video-section {
  background: #1e293b;
}
.video-title {
  color: #f9fafb;
}
.video-frame {
  box-shadow: 0 6px 20px rgba(0,0,0,0.5);
}

/*  Cards */
.card-custom {
  background: #1e293b;
  border: none;
  color: #f1f5f9;
  border-radius: 15px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.3);
  transition: transform 0.3s;
}
.card-custom:hover {
  transform: translateY(-10px);
}

/*  Footer */
.footer-section {
  background: #1e293b;
  color: #94a3b8;
}
.footer-link {
  color: #6366f1;
  text-decoration: none;
}
.footer-link:hover {
  text-decoration: underline;
}