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

body {
  font-family: 'Segoe UI', sans-serif;
  background: linear-gradient(135deg, #00c6ff, #007bff);
  color: white;
  text-align: center;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1rem;
}
.logo {
  width: 150px;
}
.nav-btn {
  color: white;
  margin-left: 15px;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: bold;
}
.nav-btn:hover {
  background: rgba(255, 255, 255, 0.2);
}
.nav-btn.highlight {
  background: white;
  color: #007bff;
}

/* Hero Section */
.hero {
  margin-top: 4rem;
  padding: 2rem;
}
.hero h1 {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}
.hero p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}
.cta-buttons .btn {
  text-decoration: none;
  background: white;
  color: #007bff;
  padding: 0.8rem 1.5rem;
  margin: 0 10px;
  border-radius: 6px;
  font-weight: bold;
  display: inline-block;
}
.cta-buttons .btn-primary {
  background: #007bff;
  color: white;
}
.cta-buttons .btn:hover {
  opacity: 0.9;
}

/* Features Section */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  padding: 2rem;
  margin-top: 2rem;
}
.feature-card {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 1rem;
  text-align: center;
}
.feature-card h2 {
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}
.feature-card p {
  font-size: 1rem;
  color: #e3e3e3;
}

/* Footer */
footer {
  margin-top: 2rem;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.2);
  font-size: 0.9rem;
}

/* Mobile (320x568) */
@media screen and (max-width: 480px) {
  .hero h1 { font-size: 1.5rem; }
  .hero p { font-size: 1rem; }
  .cta-buttons .btn { display: block; margin: 10px auto; }
  .features { grid-template-columns: 1fr; }
}