.snake-main {
  min-height: calc(100vh - 180px);
}

.snake-hero {
  min-height: 100%;
  padding-block: 48px 84px;
  background: radial-gradient(ellipse at 50% 0, rgba(42, 117, 91, .2), transparent 58%);
}

.snake-shell {
  width: min(940px, calc(100% - 40px));
}

.snake-back-link {
  display: inline-block;
  margin-bottom: 28px;
  color: var(--muted);
  font: 11px var(--mono);
}

.snake-back-link:hover {
  color: var(--accent);
}

.snake-hero h1 {
  margin-bottom: 10px;
}

.snake-intro {
  max-width: 650px;
  margin-bottom: 30px;
  color: var(--muted);
}

.snake-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 230px;
  align-items: start;
  gap: 18px;
}

.snake-console,
.snake-controls {
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: linear-gradient(145deg, rgba(17, 26, 34, .98), rgba(11, 18, 24, .98));
  box-shadow: 0 25px 80px rgba(0, 0, 0, .22);
}

.snake-console {
  overflow: hidden;
}

.snake-console-bar,
.snake-scorebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  font: 10px var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.snake-console-bar {
  border-bottom: 1px solid var(--line);
  color: var(--accent);
}

.snake-scorebar {
  color: var(--muted);
  letter-spacing: 0;
  text-transform: none;
}

.snake-scorebar p {
  display: flex;
  gap: 8px;
  margin: 0;
}

.snake-scorebar output {
  color: var(--text);
  font-weight: 700;
}

.snake-board-frame {
  width: min(100% - 36px, 480px);
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid rgba(166, 243, 109, .34);
  border-radius: 5px;
  background: #0b160f;
}

#snake-board {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  outline-offset: -4px;
  touch-action: none;
}

.snake-status {
  min-height: 42px;
  margin: 0;
  padding: 12px 18px;
  color: var(--accent);
  font: 11px/1.6 var(--mono);
}

.snake-controls {
  padding: 19px;
}

.snake-controls > .eyebrow {
  margin-bottom: 14px;
  color: var(--muted);
}

.snake-action-buttons {
  display: grid;
  gap: 8px;
}

.snake-action-buttons .button {
  justify-content: center;
  min-height: 40px;
  cursor: pointer;
}

.snake-action-buttons .button:disabled {
  cursor: not-allowed;
  opacity: .48;
  transform: none;
}

.snake-speed-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 10px;
  padding: 9px 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
}

.snake-speed-label {
  display: grid;
  gap: 2px;
  color: var(--muted);
  font-size: 10px;
}

.snake-speed-label output {
  color: var(--accent);
  font: 11px var(--mono);
}

.snake-speed-buttons {
  display: flex;
  gap: 6px;
}

.snake-speed-buttons button {
  width: 34px;
  height: 32px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: rgba(166, 243, 109, .06);
  color: var(--accent);
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.snake-speed-buttons button:hover:not(:disabled) {
  border-color: var(--accent);
  background: rgba(166, 243, 109, .13);
}

.snake-speed-buttons button:disabled {
  cursor: not-allowed;
  opacity: .42;
}

.snake-ai-toggle {
  width: 100%;
  margin-top: 12px;
  border-color: var(--line-strong);
  cursor: pointer;
}

.snake-ai-toggle[aria-pressed="true"] {
  border-color: rgba(166, 243, 109, .52);
  background: rgba(166, 243, 109, .1);
  color: var(--accent-bright);
}

.snake-options {
  display: grid;
  gap: 9px;
  margin-top: 14px;
}

.snake-toggle {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 11px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(255, 255, 255, .018);
  cursor: pointer;
}

.snake-toggle input {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin: 2px 0 0;
  accent-color: var(--accent);
}

.snake-toggle strong,
.snake-toggle small {
  display: block;
}

.snake-toggle strong {
  color: var(--text);
  font-size: 11px;
}

.snake-toggle small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
}

.snake-dpad {
  display: grid;
  grid-template-columns: repeat(3, 42px);
  justify-content: center;
  gap: 6px;
  margin-block: 22px;
}

.snake-dpad button {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  background: rgba(166, 243, 109, .06);
  color: var(--accent);
  font-size: 19px;
  cursor: pointer;
}

.snake-dpad button:hover {
  border-color: var(--accent);
  background: rgba(166, 243, 109, .13);
}

.snake-dpad button:disabled {
  cursor: not-allowed;
  opacity: .42;
}

.snake-instructions,
.snake-local-note {
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.snake-instructions kbd {
  padding: 2px 4px;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  color: var(--text);
  font: 10px var(--mono);
}

.snake-local-note {
  margin: 15px 0 0;
  color: var(--dim);
}

@media (max-width: 700px) {
  .snake-hero {
    padding-block: 36px 64px;
  }

  .snake-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .snake-controls {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: 18px;
  }

  .snake-controls > .eyebrow,
  .snake-speed-control,
  .snake-ai-toggle,
  .snake-options,
  .snake-dpad,
  .snake-instructions,
  .snake-local-note {
    grid-column: 1 / -1;
  }

  .snake-action-buttons {
    align-content: start;
  }

  .snake-dpad {
    justify-self: center;
    margin: 18px 0 0;
  }
}

@media (max-width: 390px) {
  .snake-controls {
    grid-template-columns: minmax(0, 1fr);
  }

  .snake-dpad {
    margin-top: 18px;
  }
}