/* Reset and base */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
html { font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial; }
body { margin: 0; color: #e8f4ff; background: #0a1026; min-height: 100vh; }

/* White neon glow background (neon haze behind content) */
body::before {
  content: "";
  position: fixed;
  inset: -20vmax;
  background:
    radial-gradient(circle at 15% 20%, rgba(255,255,255,0.25), transparent 40%),
    radial-gradient(circle at 75% 60%, rgba(0,255,255,0.25), transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(255,255,255,0.15), transparent 60%);
  filter: blur(60px);
  z-index: -1;
  animation: neonPulse 8s ease-in-out infinite;
  pointer-events: none;
}
@keyframes neonPulse {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50% { transform: scale(1.04); opacity: 0.98; }
}

/* Hero/main layout (mobile-first) */
main {
  display: grid;
  place-items: center;
  padding: 4rem 1rem 2rem;
}

/* Frosted glass frame for the visual content */
.image-frame {
  width: min(960px, 92%);
  background: rgba(5, 10, 28, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 22px;
  padding: 1rem;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: grid;
  gap: 0.75rem;
}

.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.15);
}

/* Footer / product ad (neon hacker vibe) */
footer {
  padding: 2rem 1rem;
  background: rgba(2, 6, 23, 0.3);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.product-ad {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 1rem;
  max-width: 1100px;
  margin: 0 auto 1rem;
  padding: 1rem;
  border-radius: 14px;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  background: rgba(5,12,28,0.6);
  border: 1px solid rgba(255,255,255,0.15);
  box-shadow: 0 6px 26px rgba(0,0,0,0.45);
}

.product-ad h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  color: #d9f7ff;
  letter-spacing: .4px;
}

.product-ad a { text-decoration: none; }

.product-ad a p {
  margin: 0;
  padding: 0.6rem 0.9rem;
  display: inline-block;
  border-radius: 999px;
  color: #02111e;
  font-weight: 800;
  background: linear-gradient(135deg, #00f6e0 0%, #00d4ff 100%);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 0 12px rgba(0,255,255,0.9);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.product-ad a:hover p {
  transform: translateY(-1px);
  box-shadow: 0 0 18px rgba(0,255,255,0.95);
}
.product-ad a:focus-visible {
  outline: 2px solid #00eaff;
  outline-offset: 2px;
  border-radius: 999px;
}

/* Footer copyright text */
footer p {
  text-align: center;
  color: #92a8d8;
  font-size: 0.92rem;
  margin: 0.5rem 0 0;
}

/* Focus styles for accessibility on links and interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
[data-focus-visible="true"]:focus-visible {
  outline: 2px solid #00eaff;
  outline-offset: 2px;
  border-radius: 6px;
}

/* Responsive adjustments (still mobile-first) */
@media (min-width: 700px) {
  main {
    padding: 6rem 1rem 2rem;
  }
  .image-frame {
    width: 85%;
  }
  .product-ad {
    grid-template-columns: auto 1fr;
  }
}