:root {
  --bg: #f3efe6;
  --panel: #fffaf2;
  --text: #1f1f1f;
  --grid: #e4d9c6;
  --snake: #2e5d3d;
  --food: #bc3a2b;
  --cell-size: min(4.5vw, 24px);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  min-height: 100vh;
  display: grid;
  place-items: center;
  gap: 12px;
  padding: 24px 16px;
}

.hud {
  text-align: center;
}

.hud h1 {
  margin: 0 0 4px;
  font-size: 1.4rem;
}

.hud p {
  margin: 0;
  font-weight: 700;
}

.board {
  display: grid;
  grid-template-columns: repeat(20, var(--cell-size));
  grid-template-rows: repeat(20, var(--cell-size));
  gap: 1px;
  background: var(--grid);
  border: 2px solid #9f8f75;
  padding: 1px;
}

.cell {
  width: var(--cell-size);
  height: var(--cell-size);
  background: var(--panel);
}

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

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

.status {
  min-height: 1.25rem;
  margin: 0;
  font-size: 0.95rem;
}

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

button {
  border: 1px solid #8e7f66;
  background: #f9f1e5;
  color: var(--text);
  padding: 8px 12px;
  border-radius: 4px;
  font: inherit;
}

.controls {
  display: none;
  gap: 8px;
  align-items: center;
  flex-direction: column;
}

.controls-row {
  display: flex;
  gap: 8px;
}

@media (max-width: 700px) {
  .controls {
    display: flex;
  }
}