:root {
  --bg-0: #0f172a;
  --bg-1: #1e293b;
  --ink: #e2e8f0;
  --accent: #f59e0b;
  --accent-2: #22d3ee;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% 0%, #334155 0%, var(--bg-0) 45%, #020617 100%);
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  overscroll-behavior: none;
}

.app-shell {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

.hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.stats {
  display: flex;
  gap: 16px;
  font-weight: 700;
}

#game {
  width: 100%;
  border: 2px solid #334155;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--bg-1), #111827);
  touch-action: none;
  user-select: none;
}

.hint {
  margin-top: 10px;
  opacity: 0.85;
}

@media (max-width: 700px) {
  .app-shell {
    padding: 12px;
  }

  .hud {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
}