/* Minimal reset */
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Palette and utility vars for hacker/cyberpunk gold theme */
:root {
  --bg-deep: #0a1020;
  --bg-blue: #0b2d6b;
  --text: #e8f2ff;
  --muted: #cbd5e1;
  --gold: #ffd36b;
  --gold-dark: #e0b12b;
  --glass: rgba(255,255,255,.08);
  --glass-border: rgba(255,255,255,.28);
  --shadow: 0 20px 60px rgba(0,0,0,.4);
}

/* Light global defaults */
html, body { height: 100%; }
body {
  color: var(--text);
  background: var(--bg-deep);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto;
  line-height: 1.4;
  /* Blue geometric shapes background (layered gradients) */
  background-image:
    conic-gradient(from 45deg at 20% 20%, rgba(0,170,255,.28), rgba(0,0,0,0) 60%),
    conic-gradient(from 210deg at 70% 40%, rgba(0,120,255,.25), rgba(0,0,0,0) 40%),
    radial-gradient(circle at 15% 0%, rgba(0,180,255,.18), transparent 25%),
    radial-gradient(circle at 85% 15%, rgba(0,100,200,.20), transparent 25%),
    linear-gradient(135deg, rgba(2,8,23,.9), rgba(2,8,23,.9));
  background-blend-mode: overlay, overlay, normal, normal, normal;
  min-height: 100vh;
}

/* Accessibility: focus-visible outlines on interactive elements by default */
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* Mobile-first layout: centered hero with frosted glass frame for image */
main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem 1.5rem;
  min-height: calc(100vh - 140px);
}

.image-frame {
  width: min(92vw, 720px);
  padding: 1.25rem;
  border-radius: 22px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.28);
  backdrop-filter: blur(8px) saturate(110%);
  -webkit-backdrop-filter: blur(8px) saturate(110%);
  box-shadow: var(--shadow);
  display: inline-block;
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  max-width: 100%;
}

/* Footer with a prominent gold CTA and subtle cyberpunk vibe */
footer {
  text-align: center;
  padding: 1.75rem 1rem 2rem;
  color: #e6f2ff;
  background: linear-gradient(to top, rgba(2,8,23,.0), rgba(2,8,23,.25) 60%, rgba(2,8,23,.0) 100%);
}

/* Product ad block styled as a bright CTA
   gold-accented pill button to stand out on dark background */
.product-ad {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  margin: .75rem auto 0;
  padding: .25rem;
  color: #f8faff;
}

.product-ad h3 {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .3px;
  margin: 0;
  color: #e9f0ff;
}

.product-ad a {
  display: inline-block;
  text-decoration: none;
  padding: .85rem 1.4rem;
  border-radius: 999px;
  background: linear-gradient(#0b5a9d, #0a3d75);
  color: var(--gold);
  font-weight: 800;
  border: 1px solid rgba(255,215,120,.75);
  transition: transform .15s ease, box-shadow .15s ease;
  box-shadow: 0 6px 14px rgba(0,0,0,.28);
}

.product-ad a:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 20px rgba(0,0,0,.38);
}

.product-ad a:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

footer p {
  margin-top: .75rem;
  color: var(--muted);
  font-size: .95rem;
}

/* Responsive tweaks */
@media (min-width: 640px) {
  main { padding: 2.5rem 2rem 2rem; }
  .image-frame { width: min(88vw, 820px); padding: 1.5rem; }
}

@media (min-width: 1024px) {
  footer { padding: 2rem 0 2.25rem; }
  .image-frame { padding: 1.75rem; border-radius: 28px; }
  .product-ad h3 { font-size: 1.15rem; }
}