:root {
  color-scheme: light;
  --bg: #f5f1e8;
  --panel: #fffdf8;
  --border: #2e2a26;
  --grid: #ded5c4;
  --text: #1c1815;
  --muted: #6a6158;
  --snake: #2f7d32;
  --snake-head: #1f5a21;
  --food: #c3423f;
  --button: #efe6d6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
}

button {
  font: inherit;
}

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

.game-card {
  width: min(100%, 720px);
  background: var(--panel);
  border: 2px solid var(--border);
  padding: 20px;
  box-shadow: 8px 8px 0 rgba(46, 42, 38, 0.12);
}

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

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

.eyebrow,
.instructions,
#status,
.score-label {
  margin: 0;
  color: var(--muted);
}

h1 {
  margin: 4px 0 0;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1;
}

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

.score-item {
  min-width: 82px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  text-align: center;
}

.score-item strong {
  display: block;
  margin-top: 4px;
  font-size: 1.2rem;
}

.status-row {
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.actions button,
.control {
  border: 1px solid var(--border);
  background: var(--button);
  color: var(--text);
  padding: 10px 14px;
  cursor: pointer;
}

.actions button:hover,
.control:hover,
.actions button:focus-visible,
.control:focus-visible {
  background: #e5dac7;
  outline: none;
}

.board {
  display: grid;
  grid-template-columns: repeat(16, minmax(0, 1fr));
  gap: 2px;
  padding: 2px;
  background: var(--grid);
  border: 2px solid var(--border);
  aspect-ratio: 1 / 1;
  outline: none;
}

.cell {
  background: #faf6ee;
}

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

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

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

.controls-panel {
  margin-top: 16px;
  flex-wrap: wrap;
}

.mobile-controls {
  display: grid;
  grid-template-columns: repeat(3, minmax(56px, 64px));
  gap: 8px;
  grid-template-areas:
    ". up ."
    "left down right";
}

.control.up {
  grid-area: up;
}

.control.left {
  grid-area: left;
}

.control.down {
  grid-area: down;
}

.control.right {
  grid-area: right;
}

@media (max-width: 640px) {
  .game-card {
    padding: 16px;
  }

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

  .scoreboard {
    width: 100%;
  }

  .score-item {
    flex: 1;
  }
}