.snake {
  --snake-board: var(--surface, var(--paper));
  --snake-body: var(--violet);
  --snake-grid: var(--line);
  --snake-bit: #8ce8d0;
  --snake-bit-ink: #174b43;
  display: grid;
  grid-template-columns: minmax(0, 520px) minmax(210px, 280px);
  align-items: center;
  gap: clamp(24px, 5vw, 72px);
  max-width: 900px;
  color: var(--ink);
}

.snake *, .snake *::before, .snake *::after { box-sizing: border-box; }
.snake-board-wrap { min-width: 0; }
.snake-board {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--snake-board);
  image-rendering: pixelated;
  touch-action: none;
}

.snake-board:focus-visible,
.snake button:focus-visible {
  outline: 3px solid var(--violet);
  outline-offset: 4px;
}

.snake-panel { min-width: 0; }
.snake-scores { display: flex; flex-wrap: wrap; gap: 20px 36px; margin: 0; }
.snake-score { display: flex; flex-direction: column; gap: 4px; }
.snake-score dt { color: var(--muted); font-size: 14px; }
.snake-score dd {
  margin: 0;
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 600;
  line-height: 1.15;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.04em;
}

.snake-status { min-height: 3.2em; margin: 22px 0 16px; font-size: 16px; line-height: 1.5; }
.snake-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.snake button {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--control-line, var(--muted));
  border-radius: 7px;
  padding: 10px 14px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  line-height: 1.3;
  font-weight: 500;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.snake button:enabled:hover { background: var(--snake-board); border-color: var(--violet); }
.snake button:enabled:active { border-color: var(--ink); }
.snake button:disabled { opacity: .45; cursor: default; }
.snake button.snake-start:enabled { background: var(--violet); border-color: var(--violet); color: var(--on-violet, var(--paper)); }
.snake-help { color: var(--muted); font-size: 14px; line-height: 1.6; margin: 20px 0 0; max-width: 31ch; }
.snake-dpad { display: grid; grid-template-columns: repeat(3, 46px); grid-template-rows: repeat(2, 46px); gap: 6px; width: max-content; margin-top: 22px; }
.snake .snake-direction { padding: 0; font-size: 22px; line-height: 1; }
.snake-up { grid-column: 2; grid-row: 1; }
.snake-left { grid-column: 1; grid-row: 2; }
.snake-down { grid-column: 2; grid-row: 2; }
.snake-right { grid-column: 3; grid-row: 2; }

@media (max-width: 720px) {
  .snake { grid-template-columns: minmax(0, 1fr); gap: 22px; max-width: 520px; }
  .snake-panel { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 16px; align-items: start; }
  .snake-scores, .snake-status, .snake-controls { grid-column: 1; }
  .snake-scores { gap: 16px 28px; }
  .snake-status { margin-top: 14px; margin-bottom: 12px; }
  .snake-dpad { grid-column: 2; grid-row: 1 / 4; margin-top: 0; }
  .snake-help { grid-column: 1 / -1; max-width: 50ch; margin-top: 16px; }
}

@media (max-width: 430px) {
  .snake-panel { grid-template-columns: minmax(0, 1fr); }
  .snake-scores { flex-wrap: nowrap; }
  .snake-status { min-height: 3em; }
  .snake-controls { gap: 6px; }
  .snake button { padding-inline: 11px; }
  .snake-dpad { grid-column: 1; grid-row: auto; justify-self: center; margin-top: 20px; }
}