:root {
  color-scheme: light;
  --page-top: #7ad7ff;
  --page-bottom: #d9f6ff;
  --panel: rgba(255, 255, 255, 0.28);
  --panel-border: rgba(255, 255, 255, 0.45);
  --text: #15304a;
  --shadow: rgba(18, 49, 79, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Verdana", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.7), transparent 40%),
    linear-gradient(180deg, var(--page-top), var(--page-bottom));
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.game-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 18px;
  border-radius: 28px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  box-shadow: 0 18px 50px var(--shadow);
  backdrop-filter: blur(10px);
}

canvas {
  width: min(92vw, 480px);
  height: auto;
  display: block;
  border-radius: 20px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.12);
  cursor: pointer;
}

.hint {
  margin: 0;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  opacity: 0.85;
}

@media (max-width: 560px) {
  .page {
    padding: 12px;
  }

  .game-shell {
    width: 100%;
    padding: 12px;
    border-radius: 22px;
  }

  .hint {
    font-size: 0.85rem;
  }
}