/* Reset & base */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
html, body { margin: 0; padding: 0; }
body {
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, Arial;
  color: #f9f5e0;
  background-color: #0a0a0a;
  /* red zigzag background (mobile-first) */
  background-image:
    linear-gradient(135deg, rgba(255,0,0,.65) 25%, transparent 25%),
    linear-gradient(315deg, rgba(255,0,0,.65) 25%, transparent 25%),
    linear-gradient(45deg, rgba(255,0,0,.65) 25%, transparent 25%),
    linear-gradient(225deg, rgba(255,0,0,.65) 25%, transparent 25%);
  background-size: 40px 40px;
  background-position: 0 0, 0 20px, 20px -20px, -20px 0;
  /* smooth rendering */
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: .2px;
}

/* Frosted glass hero area and responsive layout (mobile-first) */
main {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  isolation: isolate;
}
main::before {
  content: "";
  position: absolute;
  inset: -2rem;
  background:
    radial-gradient(circle at 70% -10%, rgba(255,215,0,.08), transparent 40%),
    radial-gradient(circle at 0% 100%, rgba(0,255,170,.05), transparent 40%);
  pointer-events: none;
  mix-blend-mode: screen;
  filter: saturate(1.2);
  z-index: -1;
}

/* Frosted glass image frame */
.image-frame {
  width: min(92vw, 900px);
  padding: 1rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(6px) saturate(1.2);
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,.25);
  box-shadow: 0 6px 22px rgba(0,0,0,.4);
}

/* Footer with frosted glass / neon vibe */
footer {
  margin-top: 2rem;
  padding: 1.75rem 1rem;
  background: rgba(3,3,3,.5);
  border-top: 1px solid rgba(255,255,255,.15);
  backdrop-filter: blur(6px);
  color: #f5e9c9;
}
.product-ad {
  text-align: center;
  margin-bottom: .75rem;
}
.product-ad h3 {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  color: #e6c35a; /* gold */
  text-shadow: 0 0 8px rgba(230,195,90,.8);
}
.product-ad a {
  display: inline-block;
  padding: .6rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 800;
  color: #1a1100;
  background: linear-gradient(135deg, #ffd166 0%, #f0b000 100%);
  border: 1px solid rgba(0,0,0,.2);
  box-shadow: 0 6px 14px rgba(0,0,0,.35);
  transition: transform .2s ease, box-shadow .2s ease;
}
.product-ad a:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0,0,0,.45);
}
.product-ad a:focus-visible {
  outline: 3px solid #ffd166;
  outline-offset: 2px;
}
.product-ad a p {
  margin: 0;
  padding: 0;
  font-weight: 800;
  display: inline;
  color: inherit;
}
footer p {
  text-align: center;
  margin: 0.25rem 0 0;
  font-size: .9rem;
  color: #f5e5b9;
  opacity: .95;
}

/* Responsive tweaks */
@media (min-width: 768px) {
  main { padding: 4rem; }
  .image-frame { padding: 1.25rem; border-radius: 18px; }
  .product-ad h3 { font-size: 1.15rem; }
}
@media (min-width: 1024px) {
  main { min-height: 70vh; }
  .image-frame { width: 700px; }
}