*,
*::before,
*::after { box-sizing: border-box; }
html, body { padding: 0; margin: 0; }

:root {
  --bg-navy: #0b1020;
  --bg-deep: #0e1a2b;
  --maroon: #8a1f2d;
  --crimson: #4b0b14;
  --glass: rgba(255, 255, 255, 0.08);
  --glass-border: rgba(255, 255, 255, 0.22);
  --text: #e9e9f5;
  --muted: #c6c9e6;
  --cta: #b71d2a;
  --cta-dark: #7a0f18;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  background: linear-gradient(to bottom, #0b1020 0%, #141a2b 40%, #2a0f1d 75%, #3b0b18 100%);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  width: min(100%, 900px);
  margin: 0 auto;
  padding: 28px 16px;
  display: block;
}

.image-frame {
  margin: 0 auto;
  width: min(100%, 720px);
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: 0 20px 60px rgba(0,0,0,0.45);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  image-rendering: -webkit-optimize-contrast;
  filter: saturate(1.05);
}

footer {
  margin-top: auto;
  padding: 18px 16px 40px;
}

.product-ad {
  background: linear-gradient(135deg, rgba(123, 0, 14, 0.8), rgba(56, 0, 9, 0.8));
  border-radius: 12px;
  padding: 14px;
  text-align: center;
  margin: 0 auto;
  max-width: 520px;
  border: 1px solid rgba(255,255,255,0.25);
  color: #ffdfe6;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.product-ad h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}
.product-ad a {
  display: inline-block;
  padding: 12px 18px;
  border-radius: 999px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(135deg, #7b1220, #5a0e15);
  border: 1px solid rgba(255,255,255,0.3);
}
.product-ad a:hover {
  background: linear-gradient(135deg, #a22234, #6b1117);
}
.product-ad a:focus-visible {
  outline: 3px solid #fff;
  outline-offset: 2px;
}

footer p {
  text-align: center;
  font-size: 0.92rem;
  color: rgba(255,255,255,0.8);
  margin: 14px 0 0;
}

/* Responsive tweaks - mobile-first defaults */

/* Larger screens */
@media (min-width: 768px) {
  main { padding: 44px 20px; }
  .image-frame { padding: 18px; border-radius: 20px; }
  .product-ad { padding: 18px; }
  .product-ad h3 { font-size: 1.15rem; }
}

/* Optional larger layout polish */
@media (min-width: 1024px) {
  main { width: 960px; }
  .product-ad { margin-top: 8px; }
  footer { padding-bottom: 48px; }
}