:root {
  color-scheme: light;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f7f7f8;
  color: #1f2937;
}

.game-shell {
  max-width: 440px;
  margin: 1.5rem auto;
  padding: 1rem;
}

h1 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
}

.meta,
.hint {
  margin: 0.5rem 0;
  font-size: 0.95rem;
}

.board {
  width: min(92vw, 400px);
  height: min(92vw, 400px);
  display: grid;
  grid-template-columns: repeat(16, 1fr);
  border: 1px solid #d1d5db;
  background: #ffffff;
}

.cell {
  border: 1px solid #f1f5f9;
}

.snake {
  background: #2563eb;
}

.snake-head {
  background: #1d4ed8;
}

.food {
  background: #dc2626;
}

.actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

button {
  border: 1px solid #d1d5db;
  background: #ffffff;
  color: #111827;
  border-radius: 0.375rem;
  padding: 0.45rem 0.7rem;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.controls {
  margin-top: 0.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.row {
  display: flex;
  gap: 0.5rem;
}