:root {
  --bg: #081223;
  --panel: #101f3f;
  --panel-2: #172c57;
  --line: rgba(148, 163, 184, 0.3);
  --text: #e2e8f0;
  --muted: #9fb3d1;
  --accent: #22d3ee;
}

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(circle at 20% 10%, #20356a, #081223 65%);
  color: var(--text);
  font-family: "Trebuchet MS", "Segoe UI", Tahoma, sans-serif;
}

.wrap {
  width: min(860px, 100vw);
  margin: 0 auto;
  padding: 12px;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.top h1 {
  margin: 0;
  font-size: 1.4rem;
}

.top p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

#restartBtn {
  border: 0;
  border-radius: 12px;
  background: linear-gradient(135deg, #06b6d4, #2563eb);
  color: #fff;
  padding: 9px 14px;
  font-weight: 700;
  cursor: pointer;
}

.hud {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 12px 0;
}

.chip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
}

.chip span {
  color: var(--muted);
}

.game-frame {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #061024;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 5 / 3;
}

.overlay {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  background: rgba(2, 6, 23, 0.72);
  padding: 16px;
}

.overlay.hidden {
  display: none;
}

.overlay h2 {
  margin: 0;
  font-size: 1.8rem;
}

.overlay p {
  margin: 8px 0 0;
  color: var(--muted);
}

.tip {
  margin: 10px 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

.mobile-controls {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.mobile-controls button {
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.78);
  color: var(--text);
  padding: 12px;
  font-weight: 700;
}

@media (max-width: 700px) {
  .top {
    flex-direction: column;
    align-items: stretch;
  }

  #restartBtn {
    width: 100%;
  }

  .mobile-controls {
    display: grid;
  }
}