:root {
  --bg1: #17122d;
  --bg2: #35265f;
  --panel: rgba(26, 19, 48, 0.92);
  --panel-border: rgba(255, 243, 209, 0.18);
  --ink: #fff3d1;
  --accent: #ffd84a;
  --accent2: #5bc0ff;
  --danger: #ff6b6b;
  --success: #7df7a0;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, var(--bg2), var(--bg1));
}
.wrap {
  max-width: 1040px;
  margin: 0 auto;
  padding: 16px;
}
.hud {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: var(--panel);
  border: 2px solid var(--panel-border);
  border-radius: 22px;
  padding: 16px 18px;
  box-shadow: 0 14px 30px rgba(0,0,0,0.28);
}
.topbar { margin-bottom: 14px; }
.topbar h1 {
  margin: 0;
  font-size: 28px;
}
.subtitle {
  margin: 6px 0 0;
  opacity: 0.88;
}
.stats {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.stats span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(255,255,255,0.08);
}
main {
  position: relative;
}
canvas {
  width: 100%;
  height: auto;
  display: block;
  background: #8ec5ff;
  border-radius: 24px;
  border: 2px solid rgba(255,255,255,0.12);
  box-shadow: 0 24px 60px rgba(0,0,0,0.35);
}
.overlay {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(10,10,20,0.55);
  border-radius: 24px;
}
.overlay.visible { display: flex; }
.card {
  width: min(92%, 500px);
  background: rgba(23, 18, 43, 0.96);
  border: 2px solid rgba(255,243,209,0.16);
  border-radius: 22px;
  padding: 24px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.card h2 { margin-top: 0; }
.card ul {
  padding-left: 20px;
  line-height: 1.6;
}
button {
  appearance: none;
  border: 0;
  border-radius: 16px;
  padding: 14px 18px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  background: var(--accent);
  color: #2a1f00;
}
.controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 14px 0;
}
.ctrl {
  min-width: 140px;
  background: rgba(255,255,255,0.12);
  color: white;
  border: 1px solid rgba(255,255,255,0.1);
}
.footerbar {
  justify-content: center;
  text-align: center;
}
@media (max-width: 700px) {
  .hud {
    flex-direction: column;
    align-items: flex-start;
  }
  .stats {
    width: 100%;
    gap: 10px;
  }
  .stats span {
    flex: 1 1 30%;
    justify-content: center;
  }
  .ctrl {
    flex: 1;
    min-width: 0;
  }
}