/* Reset and layout baseline */
*,
*::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: #e9dcc3; /* beige text on teal */
  background-color: #0a3a3a;
  /* Teal zigzag background (subtle, responsive) */
  background-image:
    linear-gradient(135deg, rgba(14,165,165,.25) 25%, transparent 25%),
    linear-gradient(225deg, rgba(14,165,165,.25) 25%, transparent 25%),
    linear-gradient(315deg, rgba(14,165,165,.25) 25%, transparent 25%),
    linear-gradient(45deg, rgba(14,165,165,.25) 25%, transparent 25%);
  background-size: 60px 60px;
  background-position: 0 0, 0 0, 30px 30px, 30px 0;
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header (hero vibe) */
header {
  text-align: center;
  padding: 2rem 1rem;
}
header h1 {
  margin: 0;
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw + 1rem, 3rem);
  line-height: 1.15;
  color: #f6e6cd; /* beige */
  text-shadow: 0 0 8px rgba(0,0,0,.25);
  letter-spacing: .3px;
}
header:after {
  content: "";
  display: block;
  width: 64px;
  height: 6px;
  margin: 0.75rem auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, #2affb2, #ffd6a8);
  opacity: .9;
  box-shadow: 0 0 12px rgba(42,255,178,.6);
}

/* Main content area (glass/card feel) */
main {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 1rem;
}
.image-frame {
  width: min(92%, 720px);
  margin: 1.5rem auto;
  padding: 1rem;
  border-radius: 16px;
  background: rgba(255,255,255,.16);
  border: 1px solid rgba(255,255,255,.28);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  box-shadow: 0 8px 28px rgba(0,0,0,.25);
}
.image-frame img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  outline: none;
}
.image-frame:focus-within {
  outline: 2px dashed #2dd4bf;
  outline-offset: 4px;
}

/* Footer and CTA */
footer {
  padding: 2rem 1rem;
  text-align: center;
}
.product-ad {
  display: inline-block;
  padding: .5rem;
  margin-bottom: .75rem;
  border-radius: 14px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.product-ad h3 {
  margin: 0 0 .5rem;
  font-size: 1.05rem;
  color: #f8f3e0;
}
.product-ad a { text-decoration: none; color: inherit; }
.product-ad a p {
  margin: 0;
  display: inline-block;
  padding: .6rem 1rem;
  border-radius: 999px;
  background: #12b3a0;
  color: #fff;
  font-weight: 700;
  border: 1px solid rgba(255,255,255,.25);
  box-shadow: 0 4px 14px rgba(0,0,0,.25);
  transition: transform .2s ease, box-shadow .2s ease;
}
.product-ad a:hover p {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0,0,0,.28);
}
.product-ad a:focus-visible {
  outline: 3px solid #2bd4bf;
  outline-offset: 2px;
}
footer p {
  color: #f4e6cf;
  margin: 0.75rem 0 0;
  font-size: .95rem;
}

/* Accessibility helpers (focus visibility for keyboard users) */
:focus {
  outline: none;
}
:focus-visible {
  outline: 3px solid #2bd4bf;
  outline-offset: 2px;
  border-radius: 6px;
}

/* Responsive tweaks (mobile-first) */
@media (min-width: 768px) {
  header { padding: 3rem 1rem; }
  main { padding: 0 2rem; }
  .image-frame { width: 720px; }
}
@media (min-width: 1024px) {
  body { background-size: 80px 80px; }
  header h1 { font-size: clamp(2.4rem, 2vw + 2rem, 4rem); }
}