:root {
  --bg: #07060f;
  --fg: #eef0ff;
  --muted: #8a8fb5;
  --cyan: #3cf2ff;
  --pink: #ff3d9a;
  --gold: #ffd23f;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

canvas { position: fixed; inset: 0; display: block; }

.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 24px 16px;
  text-align: center;
  background: radial-gradient(circle at center, rgba(7, 6, 15, 0.45), rgba(7, 6, 15, 0.88) 70%);
  transition: opacity 0.25s ease;
}
.overlay.hidden { opacity: 0; pointer-events: none; }

h1 {
  font-size: clamp(44px, 12vw, 92px);
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 0.95;
  color: var(--cyan);
  text-shadow: 0 0 22px rgba(60, 242, 255, 0.7);
}
h1 span { display: block; color: var(--pink); text-shadow: 0 0 22px rgba(255, 61, 154, 0.7); }

.tag { color: var(--muted); font-size: clamp(15px, 4vw, 18px); line-height: 1.5; margin-bottom: 8px; }
.hint { color: var(--muted); font-size: 13px; letter-spacing: 0.2em; text-transform: uppercase; }
.best { color: var(--muted); font-size: 15px; letter-spacing: 0.2em; text-transform: uppercase; }
.best b { color: var(--gold); font-size: 20px; margin-left: 6px; }

.label { color: var(--muted); letter-spacing: 0.3em; text-transform: uppercase; font-size: 14px; }
.big {
  font-size: clamp(72px, 22vw, 140px);
  font-weight: 900;
  line-height: 1;
  color: var(--fg);
  text-shadow: 0 0 30px rgba(60, 242, 255, 0.6);
}
.badge {
  color: var(--bg);
  background: var(--gold);
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 999px;
  box-shadow: 0 0 20px rgba(255, 210, 63, 0.6);
}
.badge.hidden { display: none; }

.row { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-top: 8px; }

.btn {
  font: inherit;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--bg);
  background: var(--cyan);
  border: 0;
  border-radius: 999px;
  padding: 14px 40px;
  min-width: 150px;
  cursor: pointer;
  box-shadow: 0 0 26px rgba(60, 242, 255, 0.55);
  transition: transform 0.1s ease, box-shadow 0.2s ease;
}
.btn:hover { box-shadow: 0 0 36px rgba(60, 242, 255, 0.8); }
.btn:active { transform: scale(0.96); }
.btn.ghost { background: transparent; color: var(--cyan); box-shadow: inset 0 0 0 2px var(--cyan); }
.btn:focus-visible, #mute:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; }

#mute {
  position: fixed;
  z-index: 2;
  top: max(14px, env(safe-area-inset-top));
  right: max(14px, env(safe-area-inset-right));
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  cursor: pointer;
}
#mute svg { width: 22px; height: 22px; fill: currentColor; }
#mute .off { display: none; }
#mute.muted .on { display: none; }
#mute.muted .off { display: block; }

@media (prefers-reduced-motion: reduce) {
  .overlay, .btn { transition: none; }
}