#snake-game {
  --snake-ink: #26351c;
  --snake-green: #b4c58a;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100dvh;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: var(--snake-green);
  color: var(--snake-ink);
  color-scheme: light;
  font-family: "Courier New", Courier, monospace;
  overflow: hidden;
  overscroll-behavior: contain;
}
#snake-game[open] { display: flex; flex-direction: column; }
#snake-game::backdrop { background: #b4c58a; }
body.snake-mode #cursor, body.snake-mode #whisper { visibility: hidden; }

.snake-hud {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: none;
  gap: 24px;
  padding: max(16px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right)) 16px max(24px, env(safe-area-inset-left));
  border-bottom: 2px solid var(--snake-ink);
}
#snake-title { margin: 0; color: inherit; font: bold clamp(24px, 3vw, 36px)/1 "Courier New", Courier, monospace; letter-spacing: .14em; }
.snake-scoreboard { display: flex; gap: clamp(16px, 4vw, 64px); font-size: 12px; white-space: nowrap; }
.snake-scoreboard span { display: flex; flex-direction: column; gap: 2px; }
.snake-scoreboard strong { font-size: clamp(20px, 2.5vw, 30px); line-height: 1; }
.snake-actions { display: flex; gap: 12px; }

.snake-arena {
  display: grid;
  place-items: center;
  flex: 1;
  min-height: 0;
  min-width: 0;
  margin: 18px max(24px, env(safe-area-inset-right)) 18px max(24px, env(safe-area-inset-left));
  overflow: hidden;
}
#snake-board {
  display: block;
  flex: none;
  background: var(--snake-green);
  outline: 2px solid var(--snake-ink);
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  touch-action: none;
}

.snake-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: none;
  gap: 16px;
  padding: 12px max(24px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
  border-top: 2px solid var(--snake-ink);
}
#snake-status, #snake-help { margin: 0; font-size: 12px; line-height: 1.4; }
#snake-status { font-weight: bold; }
#snake-help { text-align: right; }
.snake-help-touch { display: none; }
.snake-dpad { display: none; gap: 10px; }

#snake-game button {
  display: flex;
  align-items: center;
  justify-content: center;
  width: auto;
  height: 44px;
  min-width: 44px;
  margin: 0;
  padding: 0 16px;
  border: 2px solid var(--snake-ink);
  border-radius: 0;
  background: var(--snake-green);
  color: var(--snake-ink);
  box-shadow: 3px 3px 0 var(--snake-ink);
  font: bold 13px/1 "Courier New", Courier, monospace;
  text-transform: uppercase;
  cursor: pointer;
  backdrop-filter: none;
  touch-action: manipulation;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  transition: none;
}
#snake-game #snake-action { min-width: 116px; }
#snake-game button:hover { background: #c4d29d; border-color: var(--snake-ink); }
#snake-game button:active { box-shadow: none; transform: translate(3px, 3px); }
#snake-game button:focus-visible { outline: 2px dashed var(--snake-ink); outline-offset: 6px; }
#snake-close span { padding-left: 8px; }
#snake-game .snake-dpad button { width: 44px; padding: 0; font-size: 18px; }

@media (max-width: 600px) {
  .snake-hud { display: grid; grid-template-columns: 1fr auto; gap: 12px; padding: max(12px, env(safe-area-inset-top)) 16px 12px; }
  .snake-scoreboard { gap: 24px; font-size: 10px; }
  .snake-actions { grid-column: 1 / -1; justify-content: space-between; }
  .snake-arena { margin: 12px 16px; }
  .snake-toolbar { flex-wrap: wrap; gap: 10px; padding: 10px 16px max(10px, env(safe-area-inset-bottom)); }
  #snake-status, #snake-help { width: 100%; text-align: center; font-size: 11px; }
}

@media (hover: none), (pointer: coarse) {
  .snake-dpad { display: flex; }
  .snake-help-keys { display: none; }
  .snake-help-touch { display: inline; }
}

@media (max-width: 600px) and (hover: none), (max-width: 600px) and (pointer: coarse) {
  .snake-dpad { justify-content: center; width: 100%; }
}

@media (max-height: 540px) and (min-width: 601px) {
  .snake-hud { gap: 16px; padding-top: max(8px, env(safe-area-inset-top)); padding-bottom: 8px; }
  #snake-title { font-size: 24px; }
  .snake-scoreboard { font-size: 10px; }
  .snake-scoreboard strong { font-size: 20px; }
  .snake-arena { margin-top: 10px; margin-bottom: 10px; }
  .snake-toolbar { gap: 12px; padding-top: 8px; padding-bottom: max(8px, env(safe-area-inset-bottom)); }
  #snake-status, #snake-help { font-size: 10px; }
  .snake-dpad { gap: 8px; }
}