:root {
  --ink: #142033;
  --foam: #e8f1f8;
  --gold: #f4d35e;
  --night: #0d1829;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
  background: radial-gradient(ellipse at top, #1e3354 0%, var(--night) 70%);
  color: var(--foam);
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 16px 48px;
}

header h1 {
  margin: 0 0 6px;
  font-size: 1.6rem;
  font-weight: 650;
  letter-spacing: 0.02em;
}

header p {
  margin: 0 0 18px;
  color: #a9c3d8;
  line-height: 1.45;
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  background: #0b1524;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  cursor: none;
  touch-action: none;
}

.hud {
  display: flex;
  gap: 16px;
  margin-top: 12px;
  font-variant-numeric: tabular-nums;
  color: #c5d9ea;
}

button {
  margin-top: 14px;
  border: 0;
  border-radius: 10px;
  padding: 10px 16px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 650;
  cursor: pointer;
}

button:hover {
  filter: brightness(1.05);
}

footer {
  margin-top: 28px;
  font-size: 0.85rem;
  color: #7e97ad;
}