:root {
  color-scheme: light;
  --bg: #ffe7b3;
  --panel: #fff4d4;
  --text: #2a241a;
  --muted: #7c6a4d;
  --accent: #3fbf5a;
  --food: #ff6b6b;
  --food-leaf: #4acb6b;
  --food-stem: #6b4f2a;
  --grid: #f1d8a8;
  --canvas-bg: #f9f1c6;
  --snake: #63d36d;
  --snake-head: #56c95f;
  --snake-stroke: #2f7a3c;
  --eye-white: #ffffff;
  --eye-pupil: #2a241a;
  --panel-border: #e6c78d;
  --panel-shadow: #e6c78d;
  --button-border: #e3b861;
  --button-shadow: #e3b861;
  --button-bg: #fff2c7;
  --overlay-bg: rgba(255, 247, 216, 0.78);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Chalkboard SE", "Comic Sans MS", "Marker Felt", "Trebuchet MS", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

body[data-theme="meadow"] {
  background-image:
    radial-gradient(circle at top, #f7ffdc 0%, #e9f8c1 45%, #d4f0a0 100%),
    repeating-linear-gradient(90deg, rgba(46, 135, 52, 0.08) 0 2px, rgba(46, 135, 52, 0) 2px 8px),
    repeating-linear-gradient(0deg, rgba(46, 135, 52, 0.06) 0 3px, rgba(46, 135, 52, 0) 3px 10px);
  background-size: auto, auto, auto;
}

body[data-theme="jungle"] {
  background-image:
    radial-gradient(circle at top, #2c5f40 0%, #1e4731 55%, #143322 100%),
    radial-gradient(rgba(57, 124, 82, 0.32) 2px, transparent 0),
    radial-gradient(rgba(28, 88, 56, 0.28) 2px, transparent 0);
  background-size: auto, 36px 36px, 56px 56px;
  background-position: 0 0, 0 0, 18px 18px;
}

body[data-theme="desert"] {
  background-image:
    radial-gradient(circle at top, #fff1c9 0%, #f5d59a 60%, #e6b874 100%),
    radial-gradient(rgba(255, 255, 255, 0.5) 1px, transparent 0),
    radial-gradient(rgba(199, 159, 98, 0.2) 1px, transparent 0);
  background-size: auto, 22px 22px, 42px 42px;
  background-position: 0 0, 0 0, 11px 11px;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 20px 40px;
  display: grid;
  gap: 20px;
}

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.scores {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

h1 {
  margin: 0 0 6px;
  font-size: 36px;
  letter-spacing: 0.4px;
}

.sub {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.score {
  background: var(--panel);
  padding: 10px 16px;
  border-radius: 14px;
  display: grid;
  justify-items: end;
  gap: 4px;
  min-width: 90px;
  border: 2px solid var(--panel-border);
  box-shadow: 0 4px 0 var(--panel-shadow);
}

.score em {
  font-style: normal;
  color: var(--muted);
  font-size: 12px;
}

.score span {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.score strong {
  font-size: 22px;
}

.board {
  position: relative;
  background: var(--panel);
  border-radius: 20px;
  padding: 16px;
  border: 3px solid var(--panel-border);
  box-shadow: 0 10px 0 var(--panel-shadow);
}

.game-area {
  display: grid;
  gap: 16px;
}

#game {
  display: block;
  width: min(85vmin, 520px);
  height: min(85vmin, 520px);
  margin: 0 auto;
  background: var(--canvas-bg);
  border-radius: 14px;
  border: 3px solid var(--panel-border);
  box-shadow: inset 0 0 0 2px var(--panel-shadow);
}

.overlay {
  position: absolute;
  inset: 16px;
  display: grid;
  place-items: center;
  color: var(--text);
  font-size: 20px;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: opacity 120ms ease;
  background: var(--overlay-bg);
  border-radius: 14px;
  border: 2px dashed var(--panel-border);
}

.highscore-prompt {
  position: absolute;
  inset: 24px;
  background: var(--overlay-bg);
  border-radius: 16px;
  border: 2px solid var(--panel-border);
  display: none;
  align-content: center;
  justify-items: center;
  text-align: center;
  gap: 12px;
  padding: 16px;
}

.highscore-prompt.show {
  display: grid;
}

.highscore-prompt h2 {
  margin: 0;
  font-size: 22px;
}

.highscore-prompt p {
  margin: 0;
  color: var(--muted);
}

.highscore-prompt input {
  padding: 10px 12px;
  border-radius: 10px;
  border: 2px solid var(--panel-border);
  font-size: 14px;
  font-family: inherit;
  min-width: min(240px, 70vw);
}

.prompt-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 8px;
}

.btn.ghost {
  background: transparent;
}

.overlay.show {
  opacity: 1;
}

.controls {
  display: grid;
  gap: 8px;
  justify-items: center;
}

.control-row {
  display: flex;
  gap: 10px;
}

.btn {
  border: 2px solid var(--button-border);
  background: var(--button-bg);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  cursor: pointer;
  min-width: 72px;
  box-shadow: 0 3px 0 var(--button-shadow);
}

.btn:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--button-shadow);
}

.help {
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

.leaderboard {
  background: var(--panel);
  border-radius: 16px;
  border: 2px solid var(--panel-border);
  box-shadow: 0 6px 0 var(--panel-shadow);
  padding: 12px 16px;
  display: grid;
  gap: 8px;
}

.leaderboard h2 {
  margin: 0;
  font-size: 18px;
}

.leaderboard ol {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 6px;
  color: var(--text);
}

.leaderboard li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  font-size: 14px;
}

.leaderboard .name {
  font-weight: 600;
}

.leaderboard .score {
  font-weight: 700;
}

.leaderboard .score-badge {
  background: var(--button-bg);
  border: 2px solid var(--button-border);
  border-radius: 10px;
  padding: 2px 8px;
  font-size: 12px;
}

@media (min-width: 900px) {
  .wrap {
    max-width: 980px;
  }

  .game-area {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: start;
  }
}

.theme {
  margin-top: 6px;
}

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