:root {
  --bg: #0f1220;
  --panel: #1b2140;
  --text: #e6e8f0;
  --accent: #6573ff;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Segoe UI Symbol", "Noto Color Emoji", "Apple Color Emoji";
  color: var(--text);
  background: linear-gradient(180deg, #0d0f1a 0%, #121634 60%, #0f1220 100%);
}
.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px;
}
.header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  margin-bottom: 16px;
}
h1 {
  margin: 0;
  font-size: 24px;
  letter-spacing: 1px;
}
.controls button {
  appearance: none;
  border: 1px solid #2a3366;
  background: var(--panel);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
}
.controls button:hover { border-color: var(--accent); }

.main {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 16px;
}
.board {
  background: #0b0e1a;
  border: 1px solid #232a57;
  border-radius: 12px;
  padding: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.panel {
  background: var(--panel);
  border: 1px solid #232a57;
  border-radius: 12px;
  padding: 12px;
}
.stat {
  display: grid;
  grid-template-columns: 1fr auto;
  padding: 6px 8px;
  border-bottom: 1px dashed #2a3366;
}
.stat:last-child { border-bottom: none; }

.box { margin-top: 12px; }
.box h3 {
  margin: 0 0 8px 0;
  font-size: 14px;
  font-weight: 600;
  color: #aeb6ff;
}

.help h3 { margin: 12px 0 6px; font-size: 14px; color: #aeb6ff; }
.help ul { margin: 0; padding-left: 18px; font-size: 13px; color: #cdd1ff; }

canvas {
  display: block;
  background: #0a0d18;
  border-radius: 8px;
}

.overlay {
  position: absolute;
  inset: 0;
}

.hidden { display: none; }