:root {
  --bg: #0b1226;
  --panel: rgba(14, 22, 46, 0.82);
  --border: rgba(255, 255, 255, 0.14);
  --text: #eef2ff;
  --muted: #9fb0d8;
  --accent: #ffcf3f;
  --accent-text: #2a1d00;
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  overflow: hidden;
  -webkit-text-size-adjust: 100%;
}
canvas#stage {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
}
.hud {
  position: fixed;
  z-index: 2;
  background: var(--panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(6px);
  border-radius: 14px;
}
.hud.top {
  top: max(10px, env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  width: min(94vw, 760px);
  padding: 10px 14px 8px;
}
h1 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  letter-spacing: 0.2px;
}
#controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
#controls label:not(.sr) {
  font-size: 0.85rem;
  color: var(--muted);
}
.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}
input,
select,
button {
  font: inherit;
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 12px;
  min-height: 42px;
}
input[type='number'] {
  width: 92px;
  font-weight: 700;
  text-align: center;
  font-size: 1.05rem;
}
button {
  cursor: pointer;
  font-weight: 600;
}
button:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.14);
}
button.primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: transparent;
}
button.primary:hover:not(:disabled) {
  background: #ffdb6e;
}
button:disabled,
input:disabled,
select:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}
.hint {
  margin: 6px 2px 0;
  min-height: 1.1em;
  font-size: 0.78rem;
  color: var(--muted);
}
.hint.error {
  color: #ff8d8d;
}
.board {
  top: max(120px, calc(env(safe-area-inset-top) + 112px));
  left: 10px;
  min-width: 128px;
  padding: 8px 10px;
  font-size: 0.82rem;
}
.board h2 {
  margin: 0 0 4px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.board ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
.board li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 3px 0;
  font-weight: 600;
}
.board .dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.55);
}
.board .rank {
  width: 14px;
  color: var(--muted);
  font-weight: 500;
}
.timer {
  bottom: max(14px, env(safe-area-inset-bottom));
  left: 10px;
  padding: 6px 12px;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 1.05rem;
}
.winner {
  position: fixed;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 9, 22, 0.62);
  backdrop-filter: blur(3px);
  padding: 16px;
}
.winner[hidden],
[hidden] {
  display: none !important;
}
.winner .card {
  width: min(92vw, 420px);
  padding: 26px 22px 22px;
  text-align: center;
  background: linear-gradient(180deg, #17224a, #0e1631);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.55);
  animation: pop 0.45s cubic-bezier(0.2, 1.4, 0.4, 1);
}
.winner .small {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}
.winner .ball {
  width: 132px;
  height: 132px;
  margin: 14px auto 12px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.4rem;
  font-weight: 800;
  color: #fff;
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.45);
  border: 5px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 0 0 6px rgba(255, 207, 63, 0.35), 0 0 50px rgba(255, 207, 63, 0.55);
}
.winner h2 {
  margin: 0 0 6px;
  font-size: 1.45rem;
}
.winner .actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 18px;
  flex-wrap: wrap;
}
@keyframes pop {
  from {
    transform: scale(0.7);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}
@media (max-width: 520px) {
  h1 {
    font-size: 0.95rem;
  }
  .board {
    top: max(150px, calc(env(safe-area-inset-top) + 142px));
    min-width: 112px;
  }
}