/* CSS reset */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color: #e8f4ff;
  line-height: 1.65;
  background-color: #0b3a3f;
  background-image:
    linear-gradient(135deg, rgba(0,0,0,.15) 0, rgba(0,0,0,0) 25px),
    radial-gradient(circle at 20px 20px, rgba(255,255,255,.07) 0 2px, transparent 2px),
    radial-gradient(circle at 60px 40px, rgba(255,255,255,.04) 0 2px, transparent 2px);
  background-size: 100px 100px, 40px 40px, 40px 40px;
  background-blend-mode: overlay;
  text-shadow: 0 1px 0 rgba(0,0,0,.25);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
a { color: #9bd8ff; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Frosted glass helper */
.glass { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  border-radius: 12px; }

/* Layout */
header { padding: 2rem 1rem 1rem; text-align: left; }
header h1 {
  margin: 0 0 .25rem;
  font-size: clamp(1.8rem, 4vw + 1rem, 3.6rem);
  line-height: 1.04;
  letter-spacing: .5px;
  background: linear-gradient(90deg, #9be6ff 0%, #6bd3ff 50%, #7bdfff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 12px rgba(0,180,255,.4);
}
header .meta { font-size: .9rem; color: #cfefff; opacity: .9; margin-top: .25rem; }

/* Main content */
main { padding: 0 1rem 2rem; }
article { max-width: 860px; margin: 0 auto; padding: 1rem; display: block;
  border-radius: 12px; padding: 1.25rem; }

/* Featured image */
.featured-image { margin: 1rem 0 1rem; border-radius: 12px; overflow: hidden;
  border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.08);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.15); }
.featured-image img { display: block; width: 100%; height: auto; }

/* Article copy styling */
article p, article div { color: #e8f6ff; }

/* Footer / ad block */
footer { padding: 1rem; }
.product-ad { padding: .75rem; margin: 1rem auto; max-width: 720px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.22);
  border-radius: 12px; display: grid; grid-template-columns: 1fr auto; align-items: center;
  gap: .5rem; }
.product-ad h3 { margin: 0; font-size: 1rem; color: #d8f4ff; }
.product-ad p { margin: 0; color: #d8f4ff; font-weight: 600; padding: .4rem 0; }
.product-ad a { display: inline-flex; align-items: center; justify-content: center;
  padding: .6rem 1rem; border-radius: 8px;
  background: linear-gradient(#1e6bd6, #0b4ea3); color: white; font-weight: 700; }

/* Footer copyright */
footer p { text-align: center; color: #9bd1ff; margin: .5rem 0 0; }

/* Focus styles for accessibility */
:focus-visible { outline: 2px solid #58c3ff; outline-offset: 2px; }

/* Responsiveness */
@media (min-width: 700px) {
  article { padding: 1.5rem; }
  .product-ad { grid-template-columns: 1fr auto; }
}
@media (min-width: 1024px) {
  header { padding: 2.5rem 2rem 1.25rem; }
  footer { padding: 1.5rem 2rem 2rem; }
  .product-ad { margin: 1.25rem auto; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}