:root {
  --bg: #041f1e;
  --surface: rgba(255, 255, 255, 0.08);
  --surface-2: rgba(255, 255, 255, 0.14);
  --text: #eaffd5;
  --lime: #aaff00;
  --focus: #00e676;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

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

html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: var(--text);
  background-color: var(--bg);
  /* Teal noise texture feel (soft dither) + teal gradient overlay */
  background-image:
    radial-gradient(circle at 1px 1px, rgba(255,255,255,.08) 1px, transparent 1px),
    radial-gradient(circle at 30px 30px, rgba(0,0,0,.08) 1px, transparent 1px),
    linear-gradient(135deg, rgba(0,160,150,.25), rgba(0,210,180,.15) 60%, rgba(0,0,0,0) 100%);
  background-size: 40px 40px, 40px 40px, cover;
  background-blend-mode: overlay;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  min-height: calc(100vh - 180px);
}

.image-frame {
  width: 100%;
  max-width: 700px;
  border-radius: 20px;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: var(--shadow);
}

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

footer {
  padding: 1.25rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
  background: rgba(0, 0, 0, 0.0);
}

.product-ad {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  min-width: 240px;
  box-shadow: var(--shadow);
  text-align: center;
}

.product-ad h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--lime);
  letter-spacing: .2px;
}

.product-ad a { display: block; width: 100%; text-decoration: none; }

.product-ad a p {
  margin: 0;
  padding: .75rem 1rem;
  font-weight: 700;
  color: #041b0a;
  background: rgba(170, 255, 110, 0.75);
  border-radius: 8px;
  border: 1px solid rgba(170,255,110,.95);
  transition: transform .15s ease;
}

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

p { line-height: 1.5; }

@media (min-width: 640px) {
  main { padding: 2rem 2rem; min-height: calc(100vh - 120px); }
  .image-frame { padding: 1.25rem; }
}

@media (min-width: 1024px) {
  footer { justify-content: center; }
  .product-ad { min-width: 260px; }
}

:focus { outline: none; }

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 4px;
}