:root {
  --paper: #f4e0c0;
  --ink: #2b1b0d;
  --amber: #f59e0b;
  --amber-dark: #d97706;
  --glass: rgba(255, 255, 255, 0.15);
  --radius: 14px;
  --shadow: 0 8px 28px rgba(0,0,0,.25);
}

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

html, body { height: 100%; }
body {
  margin: 0;
  padding: 0;
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: var(--paper);
  /* parchment-like texture */
  background-image:
    linear-gradient(#f6e6c9, #f6e6c9),
    repeating-linear-gradient(0deg, rgba(0,0,0,.04) 0 2px, transparent 2px 4px),
    linear-gradient(#f8e9c0 0%, #e9d19a 60%, #e6c07b 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  min-height: calc(100vh - 120px);
}

.image-frame {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 170, 0, 0.45);
  border-radius: 12px;
  padding: 1rem;
  max-width: 92%;
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid rgba(255, 170, 0, 0.5);
}

footer {
  padding: 1.5rem;
  text-align: center;
  color: var(--ink);
}

.product-ad {
  display: inline-block;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 170, 0, 0.5);
  border-radius: 12px;
  padding: 0.6rem 0.9rem;
  margin: 0.5rem auto;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.product-ad h3 {
  margin: 0 0 0.25rem;
  font-size: 1rem;
  color: var(--amber);
  text-shadow: 0 0 6px rgba(245, 158, 11, 0.6);
}
.product-ad a {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  background: linear-gradient(135deg, #ffd27a 0%, #f59e0b 100%);
  color: #2b1b0d;
  font-weight: 700;
  text-decoration: none;
  border: 1px solid rgba(0, 0, 0, 0.15);
  box-shadow: 0 6px 14px rgba(245, 158, 11, 0.45);
}
.product-ad a:hover { transform: translateY(-1px); }
.product-ad p {
  margin: 0.25rem 0 0;
  font-weight: 700;
  color: #ffd27a;
}

a:focus,
button:focus,
[tabindex]:focus {
  outline: 3px solid #ffb347;
  outline-offset: 2px;
  border-radius: 6px;
}

@media (min-width: 768px) {
  main { padding: 3rem; min-height: 60vh; }
  .image-frame { padding: 1.25rem; max-width: 760px; }
  .image-frame img { border-radius: 14px; }
  .product-ad { margin-top: 0.75rem; }
}