:root {
  --bg: #000;
  --dot: 255, 255, 255;
}

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  font-family: "Noto Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  overflow: hidden;
}

/* Full-bleed canvas */
#bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}

/* Accessibility helper for screen readers */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 1px, 1px);
  white-space: nowrap; border: 0;
}

#gui {
  position: fixed;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: min(92vw, 480px);
  padding: 26px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.42), inset 0 1px 0 rgba(255,255,255,0.02);
  backdrop-filter: blur(10px) saturate(1.05);
  -webkit-backdrop-filter: blur(8px);
  text-align: center;
}

#gui .title {
  margin: 2px 0 18px;
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #fff;
  position: relative;
  display: inline-block;
  padding: 6px 12px;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
}

#gui .title .strike {
  /* removed decorative blurred strike for cleaner look */
  display: none;
}

#gui .title::after {
  /* removed top blur/line accent for a cleaner title */
  content: none;
}

#gui .note {
  margin: 14px 0 2px;
  font-size: 0.88rem;
  color: rgba(255,255,255,0.82);
}

#gui .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: auto;
  padding: 12px 14px;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.03));
  color: #fff;
  text-decoration: none;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: transform 140ms ease, box-shadow 160ms ease, background 160ms ease;
}

/* new: button group layout */
.btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.btns .btn {
  min-width: 140px;
  flex: 1 1 40%;
  max-width: 220px;
}

#gui .btn:hover, #gui .btn:focus-visible {
  background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.04));
  box-shadow: 0 10px 28px rgba(0,0,0,0.45);
  transform: translateY(-2px);
}

#gui .btn:active { transform: translateY(1px); }