/* Global reset and grid background (pink grid paper) */
*,
*::before,
*::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  padding: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: #eaf6ff;
  background-color: #0b1020;
  /* pink grid paper: subtle neon pink grid lines */
  background-image:
    linear-gradient(to right, rgba(255, 0, 120, 0.28) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 0, 120, 0.28) 1px, transparent 1px);
  background-size: 28px 28px;
  background-position: 0 0;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Frosted glass utility for panels */
.frosted {
  backdrop-filter: blur(8px) saturate(110%);
  -webkit-backdrop-filter: blur(8px) saturate(110%);
  background: rgba(8, 12, 40, 0.6);
  border: 1px solid rgba(120, 190, 255, 0.5);
  border-radius: 14px;
  box-shadow: 0 8px 28px rgba(0,0,0,.25);
}

/* Layout */
main {
  display: grid;
  place-items: center;
  padding: 2rem 1rem;
  min-height: calc(100vh - 100px);
}

.image-frame {
  width: 100%;
  max-width: 860px;
  padding: 0.75rem;
  border-radius: 16px;
  border: 1px solid rgba(120, 200, 255, 0.6);
  background: rgba(14, 22, 60, 0.55);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 20px 40px rgba(0,0,0,.25);
  overflow: hidden;
}

.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(180, 230, 255, 0.4);
  image-rendering: crisp-edges;
  filter: saturate(105%);
}

/* Footer with a featured product ad (CTA) */
footer {
  margin-top: 2rem;
  padding: 1rem;
  width: 100%;
  display: grid;
  justify-items: center;
}

.product-ad {
  width: min(92%, 440px);
  padding: 1rem;
  text-align: center;
  border-radius: 12px;
  background: rgba(9, 12, 40, 0.6);
  border: 1px solid rgba(100, 180, 255, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: #eaf6ff;
  box-shadow: 0 8px 28px rgba(0,0,0,.25);
}

.product-ad h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: .5rem;
  color: #d9f0ff;
  display: inline-block;
}

.product-ad a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  margin-top: .25rem;
  outline: none;
}

.product-ad a p {
  margin: 0;
  padding: .75rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  color: #001428;
  background: linear-gradient(135deg, #2bd8ff 0%, #1b6aff 100%);
  border: 1px solid rgba(255,255,255,.7);
  letter-spacing: .2px;
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
}

footer p {
  text-align: center;
  color: rgba(234,246,255,.8);
  font-size: .95rem;
  margin-top: .5rem;
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible {
  outline: 2px solid #7bdcff;
  outline-offset: 4px;
  border-radius: 6px;
}
a:focus-visible { text-decoration: none; }

/* Link defaults (subtle on grid) */
a {
  color: #bfe3ff;
  text-decoration: none;
  transition: transform .2s ease;
  outline: none;
}
a:hover { transform: translateY(-1px); }

/* Responsive: mobile-first adjustments */
@media (min-width: 768px) {
  main { padding: 4rem 2rem; min-height: 70vh; }
  .image-frame { padding: 0.75rem; }
  footer { padding: 0 2rem 2rem; }
}
@media (min-width: 1024px) {
  .product-ad { width: 520px; }
}