:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --panel: #fffdf8;
  --border: #d3ccbf;
  --text: #22201a;
  --muted: #6f695b;
  --snake: #3b7a57;
  --snake-head: #24553a;
  --food: #c7522a;
  --button: #efe7d8;
  --button-active: #e3d7c0;
  --shadow: rgba(34, 32, 26, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--text);
}

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

.game-shell {
  width: min(100%, 640px);
  background: var(--panel);
  border: 1px solid var(--border);
  box-shadow: 0 10px 30px var(--shadow);
  padding: 24px;
}

.game-header,
.game-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.game-header {
  margin-bottom: 16px;
}

h1 {
  margin: 0;
  font-size: 2rem;
}

.subtitle,
.status,
.control-hint {
  margin: 0;
  color: var(--muted);
}

.scoreboard {
  display: flex;
  gap: 12px;
}

.score-card {
  min-width: 72px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  text-align: center;
}

.score-label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.game-meta {
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.actions,
.control-row {
  display: flex;
  gap: 8px;
}

button {
  border: 1px solid var(--border);
  background: var(--button);
  color: var(--text);
  padding: 10px 14px;
  font: inherit;
  cursor: pointer;
}

button:hover,
button:focus-visible {
  background: var(--button-active);
}

.board {
  display: grid;
  grid-template-columns: repeat(16, minmax(0, 1fr));
  gap: 2px;
  aspect-ratio: 1;
  border: 1px solid var(--border);
  padding: 2px;
  background: var(--border);
}

.cell {
  background: #f7f4ed;
}

.cell.snake {
  background: var(--snake);
}

.cell.head {
  background: var(--snake-head);
}

.cell.food {
  background: var(--food);
}

.controls-panel {
  margin-top: 16px;
  display: grid;
  gap: 16px;
}

.control-hint {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.touch-controls {
  display: grid;
  justify-items: center;
  gap: 8px;
}

.control-button {
  min-width: 72px;
}

@media (max-width: 640px) {
  .app {
    padding: 12px;
  }

  .game-shell {
    padding: 16px;
  }

  .game-header,
  .game-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .scoreboard {
    width: 100%;
  }

  .score-card {
    flex: 1;
  }
}