/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; }

/* Mobile-first, cyberpunk, frost-glass vibe with brown circuit-board bg */
:root {
  --bg-brown: #3a1f0f;
  --bg-brown-dark: #2b1a0f;
  --cyan: #00e5ff;
  --cyan-dark: #00bcd4;
  --text: #eaffff;
  --glass: rgba(255,255,255,0.08);
  --border: rgba(0,255,255,0.4);
}
body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto;
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  /* brown circuit-board background with cyan traces */
  background: 
    radial-gradient(circle at 25% 15%, rgba(0,255,255,0.12) 0 20px, transparent 20px),
    radial-gradient(circle at 75% 60%, rgba(0,255,255,0.10) 0 24px, transparent 24px),
    linear-gradient(#3a1f0f, #2b1a0f 60%, #2a180e);
  background-size: 40px 40px, 40px 40px, auto;
  background-attachment: fixed;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout containers */
main {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem 1rem;
  flex: 1 1 auto;
}
.image-frame {
  background: var(--glass);
  border: 1px solid rgba(0, 255, 255, 0.4);
  border-radius: 14px;
  padding: 1rem;
  width: min(92vw, 720px);
  backdrop-filter: blur(6px) saturate(120%);
  -webkit-backdrop-filter: blur(6px) saturate(120%);
  box-shadow: 0 20px 40px rgba(0,0,0,0.35);
}
.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid rgba(0,255,255,0.25);
  box-shadow: inset 0 0 0 1px rgba(0,255,255,0.25), 0 6px 18px rgba(0,255,255,0.25);
}

/* Footer with frosted glass CTA */
footer {
  padding: 1.75rem 1rem 2.5rem;
  text-align: center;
  color: #dff8ff;
  background: linear-gradient(to top, rgba(0,0,0,0.25), rgba(0,0,0,0.0));
  backdrop-filter: saturate(140%) blur(2px);
  -webkit-backdrop-filter: saturate(140%) blur(2px);
}
.product-ad {
  display: inline-block;
  padding: 0.6rem 0.95rem;
  border-radius: 12px;
  background: rgba(0,0,0,0.25);
  border: 1px solid rgba(0,255,255,0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  margin-bottom: 0.75rem;
}
.product-ad h3 {
  font-size: 1rem;
  line-height: 1.2;
  margin: 0 0 0.25rem 0;
  color: #a6fff4;
}
.product-ad a { display: inline-block; text-decoration: none; }
.product-ad a p {
  margin: 0;
  padding: .6rem 1rem;
  border-radius: 8px;
  font-weight: 700;
  color: #001015;
  /* cyan gradient CTA */
  background: linear-gradient(135deg, #00e8ff 0%, #00bcd4 100%);
  border: 1px solid rgba(0,255,255,0.8);
  box-shadow: 0 6px 14px rgba(0, 200, 255, 0.4);
}
.product-ad a p:focus-visible {
  outline: 3px solid #ffd86b;
  outline-offset: 2px;
}
.product-ad a p:hover {
  transform: translateY(-1px);
}
footer p { margin: 0; font-size: 0.9rem; color: #9bdfff; }

/* Accessibility: focus for links outside the button area as well */
a:focus-visible {
  outline: 3px solid #ffd86b;
  outline-offset: 2px;
}

/* Responsive tweaks */
@media (min-width: 768px) {
  main { padding: 3rem 0; }
  .image-frame { width: 720px; padding: 1.25rem; }
}