:root {
  --ink: #2b2d42;
  --paper: #fefae0;
  --sky: #8ecae6;
  --accent: #e76f51;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--ink);
  color: var(--paper);
  font-family: system-ui, sans-serif;
  text-align: center;
}

main {
  flex: 1;
  padding: 16px;
  box-sizing: border-box;
}

h1 {
  margin: 8px 0 12px;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--accent);
}

canvas {
  display: block;
  width: 100%;
  max-width: 800px;
  height: auto;
  margin: 0 auto;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  touch-action: none;
  cursor: pointer;
}

.hint {
  margin: 12px 0 0;
  font-size: 1rem;
  opacity: 0.85;
}

.brand {
  padding: 12px 16px 20px;
  font-size: 0.85rem;
  opacity: 0.75;
}

.brand a {
  color: var(--sky);
}