/* CSS: hacker-inspired, blue grid paper backdrop, frosted glass, neon green accents */
/* Single stylesheet, mobile-first, accessible focus styles */

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

html, body { height: 100%; }

:root{
  --bg: #0a1f2d;
  --grid: rgba(0, 180, 255, 0.25);
  --panel: rgba(255, 255, 255, 0.08);
  --panel-border: rgba(0, 255, 170, 0.55);
  --text: #eafff5;
  --muted: #b8ffd6;
  --green: #2af58b;
  --green-dark: #0f8a58;
  --shadow: 0 12px 40px rgba(0,0,0,.4);
  --glow: 0 0 12px rgba(42, 245, 139, 0.8);
}

* { margin: 0; padding: 0; }

body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Inter";
  color: var(--text);
  background-color: var(--bg);
  /* blue grid paper background */
  background-image:
    linear-gradient(to right, rgba(0, 170, 255, 0.25) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 170, 255, 0.25) 1px, transparent 1px);
  background-size: 32px 32px;
  background-position: 0 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  flex: 1 0 auto;
}

.image-frame {
  width: min(92%, 860px);
  max-width: 960px;
  padding: 1rem;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(0, 255, 170, 0.45);
  /* subtle neon edge glow for hacker vibe */
  box-shadow: 0 0 0 rgba(0,0,0,0);
}

footer {
  padding: 1.75rem 1rem;
  display: grid;
  justify-items: center;
  gap: 0.75rem;
  color: var(--muted);
  text-align: center;
  margin-top: 1rem;
}

.product-ad {
  background: rgba(0, 0, 0, 0.12);
  border: 1px solid rgba(0, 255, 170, 0.65);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-align: center;
  width: min(92%, 860px);
  box-shadow: inset 0 0 0 rgba(0,0,0,0.0);
}

.product-ad h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  color: #d8ffea;
  letter-spacing: .3px;
}

.product-ad a {
  display: inline-block;
  text-decoration: none;
  border-radius: 999px;
  padding: 0.6rem 1.05rem;
  /* neon green CTA */
  background: linear-gradient(135deg, #22f57a 0%, #0bd36a 100%);
  color: #04140b;
  font-weight: 800;
  font-size: 0.95rem;
  border: 1px solid rgba(0,0,0,0.15);
  box-shadow: 0 0 12px rgba(42, 245, 139, 0.9);
  transition: transform .2s ease, filter .2s ease;
}
.product-ad a:hover { transform: translateY(-1px) scale(1.02); filter: brightness(1.05); }
.product-ad a:focus-visible { outline: 3px solid #fff; outline-offset: 2px; }

.product-ad p { margin: 0; padding-top: 2px; font-size: 0.92rem; color: #d6ffe3; }

footer > p { margin: 0.75rem 0 0; color: #d6ffe3; font-size: 0.9rem; }

@media (min-width: 700px) {
  main { padding: 3rem 2rem; }
  .image-frame { width: min(70%, 860px); }
  footer { padding: 2rem; }
  .product-ad h3 { font-size: 1.05rem; }
}