/* Minimal reset and base styles */
*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
html { font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial; font-size: 16px; }
body {
  margin: 0;
  color: #1b1b2b;
  /* White abstract blur background with subtle pattern for hacker night vibe */
  background: #f9f9fb;
  background-image:
    radial-gradient(circle at 20px 20px, rgba(255, 105, 180, .25) 2px, transparent 3px),
    radial-gradient(circle at 60px 40px, rgba(0, 0, 0, .04) 2px, transparent 3px);
  background-size: 60px 60px, 60px 60px;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(255, 105, 180, 0.5);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.brand {
  padding: 0.75rem 1rem;
  font-weight: 700;
  color: #111;
  display: inline-flex; align-items: center; gap: .5rem;
}

/* Frosted glass hero layout */
.hero {
  width: min(960px, 92%);
  margin: 3rem auto 2rem;
  padding: 2.5rem 1.75rem;
  display: grid;
  gap: 0.75rem;
  justify-items: center;
  text-align: center;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 12px 40px rgba(0,0,0,.25);
}
.hero h1 {
  font-size: clamp(1.6rem, 4vw + 1rem, 2.6rem);
  margin: 0;
  color: #0a0a14;
}
.hero h2 {
  font-size: clamp(1.25rem, 2.4vw + 0.5rem, 1.75rem);
  margin: 0;
  color: #ff6b61;
  text-shadow: 0 2px 8px rgba(255, 107, 97, 0.5);
}
.subhead {
  color: #5a5a6a;
  opacity: 0.95;
  margin: 0.25rem 0 0;
}
.qr-center {
  width: min(360px, 78%);
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  padding: 1rem;
  border-radius: 16px;
  background: rgba(0,0,0,.14);
  border: 1px solid rgba(0,0,0,.15);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.qr-center img { width: 100%; height: auto; border-radius: 12px; }
.telegram-link { font-size: .95rem; color: #2c2c2c; margin-top: .25rem; }

/* Footer with CTA-like ad */
footer { text-align: center; padding: 1rem; }
.footer-ad {
  display: inline-block;
  padding: .5rem 1rem;
  border-radius: 999px;
  background: rgba(255, 105, 180, 0.28);
  border: 1px solid rgba(255, 105, 180, 0.6);
  margin-bottom: .5rem;
}
.footer-ad a { color: #fff; font-weight: 700; text-decoration: none; padding: .25rem .5rem; display: inline-block; }
.footer-ad a:hover { text-decoration: underline; }
.gratitude { color: #d28bd6; margin: .25rem 0 1.25rem; }

/* Accessibility-friendly focus */
a { color: #e54a7a; text-decoration: none; }
a:hover, a:focus { text-decoration: underline; }
:focus-visible { outline: 2px solid #ff3b9d; outline-offset: 2px; }

/* Responsive tweaks (mobile-first) */
@media (min-width: 700px) {
  .hero { padding: 3rem 2.5rem; }
  .qr-center { width: 420px; }
}
@media (min-width: 1100px) {
  .hero { grid-template-columns: 1fr; }
}