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

:root {
  --brown-dark: #2b1f0a;
  --brown: #5a3b22;
  --turq: #2bd6d5;
  --turq-dark: #0fb3a0;
  --text: #eaffff;
  --glass: rgba(255, 255, 255, 0.15);
  --glass-border: rgba(0, 230, 230, 0.4);
}

html, body {
  height: 100%;
}

body {
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background-color: var(--brown-dark);
  background-image:
    linear-gradient(45deg, #5a2e15 25%, transparent 25%),
    linear-gradient(-45deg, #5a2e15 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #5a2e15 75%),
    linear-gradient(-45deg, transparent 75%, #5a2e15 75%);
  background-size: 40px 40px;
  background-position: 0 0, 0 20px, 20px -20px, -20px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

/* Hero / main frame */
main {
  width: min(100%, 1100px);
  padding: 2rem 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-frame {
  width: min(100%, 900px);
  background: rgba(8, 16, 24, 0.6);
  border: 1px solid var(--glass-border);
  border-radius: 18px;
  padding: 1.5rem;
  box-shadow: 0 10px 28px rgba(0,0,0,.4);
  backdrop-filter: blur(6px) saturate(1.2);
}

.image-frame img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  outline: 0;
  border: 1px solid rgba(0,0,0,.15);
  box-shadow: inset 0 0 0 rgba(0,0,0,0);
}

footer {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
  color: #d9f7f3;
}

.product-ad {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 0.75rem 1rem;
  border-radius: 12px;
  background: rgba(5, 12, 16, 0.6);
  border: 1px solid rgba(0, 230, 230, 0.4);
  backdrop-filter: blur(6px);
  margin-bottom: 0.75rem;
}

.product-ad h3 {
  font-size: 1rem;
  margin-bottom: .25rem;
  color: #7ef0e6;
}

.product-ad a {
  text-decoration: none;
  display: inline-block;
  padding: .75rem 1.25rem;
  border-radius: 999px;
  background: linear-gradient(135deg, #0fb6a0 0%, #2bd6d5 70%);
  color: #eaffff;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,.25);
  box-shadow: 0 6px 14px rgba(0,0,0,.25);
  transition: transform .2s ease;
}

.product-ad a:focus-visible {
  outline: 3px solid var(--turq);
  outline-offset: 2px;
}

.product-ad a:hover {
  transform: translateY(-1px);
}

footer p {
  text-align: center;
  font-size: .85rem;
  color: #a4ece7;
}

@media (min-width: 768px) {
  main { padding: 3rem 1rem; }
}