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

html, body {
  height: 100%;
}

:root {
  --turq: #2ef0e0;
  --turq-dark: #0eb7a2;
  --parchment: #a9c993;
  --parchment-2: #8aa66a;
  --surface: rgba(255, 255, 255, 0.08);
  --border: rgba(0, 255, 230, 0.6);
  --text: #eafffb;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  padding: 1rem;
  background: linear-gradient(135deg, rgba(165, 206, 128, 0.22) 0%, rgba(152, 176, 93, 0.22) 50%, rgba(186, 210, 147, 0.22) 100%), var(--parchment);
  background-blend-mode: overlay;
}

/* Hero / main layout */
main {
  display: grid;
  place-items: center;
  padding: 1rem 0;
}

.image-frame {
  width: min(92vw, 720px);
  padding: 0.75rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
  box-shadow: 0 10px 40px rgba(0,0,0,.25);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}

/* Footer / product ad */
footer {
  margin-top: 1.25rem;
  display: grid;
  place-items: center;
  padding-bottom: 1rem;
  font-size: 0.95rem;
}

.product-ad {
  width: min(90vw, 720px);
  padding: 1rem;
  border-radius: 14px;
  text-align: center;
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid rgba(0, 255, 230, 0.6);
  box-shadow: 0 6px 28px rgba(0,0,0,.25);
}

.product-ad h3 {
  font-size: 1.1rem;
  color: #d9fff2;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 8px rgba(46, 255, 226, 0.6);
}

.product-ad a {
  display: inline-block;
  padding: 0.75rem 1.1rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  background: linear-gradient(135deg, #1bd6bf 0%, #14c0a0 100%);
  color: #041a14;
  border: 1px solid rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.product-ad a:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0,0,0,.25);
}
.product-ad a:focus-visible {
  outline: 3px solid #2fffd7;
  outline-offset: 2px;
}

/* Footer text styling */
footer p {
  color: #d8f7f0;
  margin-top: 0.5rem;
  opacity: 0.95;
}

/* Keyboard focus helpers for accessibility */
a:focus-visible {
  outline: 3px solid #2fffd7;
  outline-offset: 2px;
}

/* Responsive tweaks */
@media (min-width: 640px) {
  .image-frame { padding: 1rem; }
  .product-ad { padding: 1.25rem; }
}
@media (min-width: 900px) {
  body { padding: 2rem; }
  main { padding: 2rem 0; }
  .image-frame { border-radius: 20px; }
  .product-ad { padding: 1.5rem; }
  .product-ad h3 { font-size: 1.25rem; }
}