:root {
  --bg: #111;
  --panel: #1b1b1b;
  --grid: #2b2b2b;
  --snake: #6ee7b7;
  --snake-head: #34d399;
  --food: #f97316;
  --text: #f5f5f5;
  --muted: #a3a3a3;
  --btn: #262626;
  --btn-border: #333;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #0d0d0d, #151515 40%, #0d0d0d);
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  display: grid;
  place-items: center;
  min-height: 100vh;
}

.app {
  width: min(92vw, 520px);
  background: var(--panel);
  border: 1px solid #222;
  padding: 16px;
}

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

.title {
  font-weight: 700;
  letter-spacing: 0.5px;
}

.score,
.status {
  color: var(--muted);
  font-size: 14px;
}

.board-wrap {
  display: grid;
  place-items: center;
  padding: 8px;
  background: #121212;
  border: 1px solid #222;
}

canvas {
  width: 100%;
  height: auto;
  background: #0f0f0f;
  image-rendering: pixelated;
}

.controls {
  display: flex;
  gap: 8px;
  margin: 12px 0 6px;
}

.btn {
  flex: 1;
  background: var(--btn);
  color: var(--text);
  border: 1px solid var(--btn-border);
  padding: 8px;
  font-size: 14px;
}

.pad {
  display: grid;
  gap: 6px;
  justify-items: center;
  margin-top: 8px;
}

.pad-row {
  display: flex;
  gap: 6px;
}

.pad-btn {
  width: 44px;
  height: 36px;
  background: #202020;
  color: var(--text);
  border: 1px solid var(--btn-border);
  font-size: 16px;
}

.hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

@media (min-width: 700px) {
  .pad {
    display: none;
  }
}