/* Minimal, responsive, hacker-themed CSS with frosted glass and green galaxy background */
:root {
  --bg-1: #031b12;
  --bg-2: #03261a;
  --fg: #eaffff;
  --cyan: #00e5ff;
  --cyan-dark: #00cbdc;
  --glass: rgba(12, 60, 60, 0.55);
  --glass-border: rgba(0, 255, 255, 0.6);
  --shadow: 0 8px 28px rgba(0,0,0,.25);
}

*,
*::before,
*::after { box-sizing: border-box; }

html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: var(--fg);
  background-color: var(--bg-1);
  /* Green galaxy starscape background (layered gradients) */
  background-image:
    radial-gradient(circle at 15% 20%, rgba(0,255,170,.70) 0 2px, transparent 3px),
    radial-gradient(circle at 60% 70%, rgba(0,255,200,.50) 0 2px, transparent 3px),
    radial-gradient(circle at 85% 25%, rgba(0,210,180,.60) 0 2px, transparent 3px),
    radial-gradient(circle at 40% 50%, rgba(0,255,100,.25) 0 120px, transparent 120px),
    radial-gradient(circle at 25% 75%, rgba(0,255,200,.15) 0 180px, transparent 180px);
  background-color: var(--bg-2);
  background-blend-mode: screen;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem 1rem;
}

.image-frame {
  width: 100%;
  max-width: 860px;
  padding: 1rem;
  border-radius: 16px;
  background: rgba(10, 40, 40, 0.55);
  border: 1px solid rgba(0, 255, 255, 0.60);
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px) saturate(1.2);
  -webkit-backdrop-filter: blur(6px) saturate(1.2);
  display: flex;
  justify-content: center;
}

.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  outline: 0;
}

footer {
  margin-top: auto;
  padding: 1rem 1rem 2rem;
  width: 100%;
}

.product-ad {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: flex-start;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  background: rgba(8, 42, 42, 0.60);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  max-width: 420px;
}

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

.product-ad a {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .65rem 1rem;
  border-radius: 999px;
  background: var(--cyan);
  color: #06261f;
  text-decoration: none;
  font-weight: 700;
  border: 1px solid rgba(0, 214, 255, 0.95);
  transition: transform .2s ease, background .2s ease;
}
.product-ad a:hover { background: #00d6ff; transform: translateY(-1px); }
.product-ad a:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 2px;
}
.product-ad p { margin: 0; padding: 0; color: #b7f8f0; }

footer p {
  margin: 0.75rem 0 0;
  color: #b5f0e6;
  font-size: 0.9rem;
}

/* Accessibility helpers: high-contrast link focus ring if needed */
a { color: var(--cyan-dark); text-decoration: none; }
a:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }

/* Responsive / mobile-first scaling */
@media (min-width: 768px) {
  main { padding: 3rem 2rem; }
  .image-frame { padding: 1.25rem; border-radius: 18px; }
  .product-ad { flex-direction: row; align-items: center; gap: 1rem; }
  .product-ad h3 { font-size: 1.05rem; }
  .product-ad p { font-size: 1rem; }
  footer { padding: 1.5rem 2rem 2rem; }
}