:root {
  color-scheme: dark;
  --bg: #101418;
  --surface: #151d24;
  --surface-2: #1c2730;
  --text: #eef7f3;
  --muted: #91a39b;
  --grid: rgba(255, 255, 255, 0.055);
  --snake: #42e8a3;
  --snake-head: #a8ffd9;
  --food: #ff5470;
  --accent: #ffd166;
  --danger: #ff6b6b;
  --shadow: rgba(0, 0, 0, 0.32);
  --touch-bg: rgba(168, 255, 217, 0.68);
  --touch-border: rgba(255, 255, 255, 0.35);
  --control-bg: var(--snake-head);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(135deg, rgba(66, 232, 163, 0.1), transparent 38%),
    linear-gradient(315deg, rgba(255, 84, 112, 0.08), transparent 42%),
    var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

button,
select {
  font: inherit;
}

.app-shell {
  width: min(1180px, calc(100vw - 32px));
  min-height: 100vh;
  margin: 0 auto;
  padding: 28px 0;
  display: grid;
  place-items: center;
  gap: 18px;
}

.game-layout {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  grid-template-areas:
    "topbar topbar"
    "board quick"
    "board controls"
    "touch controls"
    "rules rules"
    "leaderboard leaderboard";
  gap: 16px;
  align-items: stretch;
}

.topbar {
  grid-area: topbar;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.25rem);
  line-height: 0.95;
}

.score-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(84px, 1fr));
  gap: 10px;
}

.stat,
.overlay-panel,
.control-panel {
  background: rgba(21, 29, 36, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 18px 50px var(--shadow);
}

.stat {
  min-height: 66px;
  padding: 12px 14px;
  border-radius: 8px;
}

.stat span,
.status-card span,
.setting-group label {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.stat strong,
.status-card strong {
  display: block;
  margin-top: 4px;
  font-size: 1.6rem;
  line-height: 1;
}

.play-area {
  grid-area: board;
  position: relative;
  aspect-ratio: 1;
  min-height: 0;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  -webkit-tap-highlight-color: transparent;
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 24px 80px var(--shadow);
}

canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
}

.overlay {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(10, 14, 18, 0.62);
  backdrop-filter: blur(5px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.overlay-panel {
  width: min(380px, 100%);
  padding: 26px;
  border-radius: 8px;
  text-align: center;
}

.overlay-panel p {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
}

.overlay-panel h2 {
  margin: 0 0 20px;
  font-size: clamp(1.28rem, 4vw, 2.05rem);
  line-height: 1.08;
  overflow-wrap: anywhere;
}

.score-feedback {
  display: none;
  margin: 0 0 14px;
  color: var(--accent);
  font-weight: 900;
}

.score-feedback.is-visible {
  display: block;
}

.medal-reward {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 30;
  min-height: 100vh;
  padding: 24px;
  place-items: center;
  background: rgba(3, 7, 10, 0.7);
  color: var(--text);
  font-weight: 900;
  overflow: hidden;
  pointer-events: none;
  backdrop-filter: blur(5px);
}

.medal-reward.is-visible {
  display: grid;
  pointer-events: auto;
}

.medal-fx {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.medal-message,
.medal-card {
  position: relative;
  z-index: 1;
  text-align: center;
}

.medal-card {
  display: grid;
  gap: 4px;
  justify-items: center;
  width: min(360px, calc(100vw - 48px));
  padding: 22px 24px;
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 209, 102, 0.14), rgba(168, 255, 217, 0.08)),
    rgba(28, 42, 39, 0.93);
  border: 1px solid rgba(255, 209, 102, 0.45);
  box-shadow:
    0 28px 90px rgba(0, 0, 0, 0.52),
    0 0 44px rgba(255, 209, 102, 0.08);
  animation: medal-pop 620ms cubic-bezier(0.2, 1.35, 0.3, 1) both;
}

.medal-close {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: var(--text);
  background: rgba(238, 247, 243, 0.16);
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 900;
}

.medal-close:hover {
  background: rgba(255, 255, 255, 0.18);
}

.medal-card strong {
  font-size: 1.28rem;
  line-height: 1.1;
}

.medal-card small {
  color: var(--muted);
  font-size: 0.82rem;
}

.medal-rank {
  display: block;
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #10140f;
  font-size: 1.35rem;
  line-height: 1;
  margin-bottom: 3px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.28);
}

.medal-1 .medal-rank {
  background: linear-gradient(135deg, #fff2a8, #ffd166 52%, #c88716);
}

.medal-2 .medal-rank {
  background: linear-gradient(135deg, #ffffff, #cfd9e6 54%, #8fa0b4);
}

.medal-3 .medal-rank {
  background: linear-gradient(135deg, #ffd6a5, #c98548 56%, #7b421f);
}

.medal-label {
  margin-top: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  color: #10140f;
  background: rgba(168, 255, 217, 0.88);
  font-size: 0.72rem;
  letter-spacing: 0;
}

.primary-button,
.secondary-button,
.icon-button,
.touch-pad button {
  border: 0;
  color: #07110d;
  background: var(--control-bg);
  cursor: pointer;
  transition:
    transform 120ms ease,
    filter 120ms ease,
    background 120ms ease;
}

.primary-button {
  min-height: 46px;
  width: 100%;
  border-radius: 8px;
  padding: 0 18px;
  font-weight: 900;
}

.primary-button:hover,
.secondary-button:hover,
.icon-button:hover,
.touch-pad button:hover {
  transform: translateY(-1px);
  filter: brightness(1.05);
}

.secondary-button {
  min-height: 42px;
  border-radius: 8px;
  padding: 0 12px;
  font-weight: 900;
}

.secondary-button:disabled {
  cursor: default;
  filter: saturate(0.5);
  opacity: 0.62;
}

.score-form {
  display: none;
  margin: 0 0 14px;
  text-align: left;
}

.score-form.is-visible {
  display: block;
}

.score-form label {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.score-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.score-entry input {
  min-width: 0;
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: var(--surface-2);
  color: var(--text);
  padding: 0 12px;
  font: inherit;
}

.score-entry input::placeholder {
  color: var(--muted);
}

.quick-cluster {
  grid-area: quick;
  display: grid;
  grid-template-columns: minmax(92px, auto) auto;
  align-items: center;
  justify-content: center;
  gap: 12px;
  align-self: center;
}

.action-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(78px, 1fr));
  gap: 8px;
}

.quick-actions {
  display: grid;
  grid-template-columns: repeat(3, 46px);
  justify-content: center;
  place-items: center;
  gap: 8px;
}

.quick-actions .icon-button {
  width: 46px;
  min-height: 46px;
}

.control-panel {
  grid-area: controls;
  border-radius: 8px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.icon-button {
  min-width: 0;
  aspect-ratio: 1;
  border-radius: 50%;
  font-size: 1.35rem;
  font-weight: 900;
}

.icon-button.is-muted {
  background: var(--surface-2);
  color: var(--muted);
}

.setting-group {
  display: grid;
  gap: 7px;
}

select {
  width: 100%;
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text);
  background: var(--surface-2);
  padding: 0 10px;
}

.status-card {
  min-width: 92px;
  min-height: 46px;
  padding: 6px 10px;
  border-radius: 8px;
  background: rgba(21, 29, 36, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.touch-pad {
  grid-area: touch;
  display: none;
  width: 246px;
  grid-template-columns: repeat(3, 76px);
  grid-template-rows: repeat(3, 60px);
  justify-content: center;
  gap: 5px;
  pointer-events: none;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  -webkit-tap-highlight-color: transparent;
}

.touch-pad button {
  border-radius: 8px;
  border: 1px solid var(--touch-border);
  background: var(--touch-bg);
  color: #07110d;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(8px);
  font-weight: 900;
  pointer-events: auto;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-user-drag: none;
  -webkit-tap-highlight-color: transparent;
}

.touch-pad [data-dir="up"] {
  grid-column: 2;
}

.touch-pad [data-dir="left"] {
  grid-column: 1;
  grid-row: 2;
}

.touch-pad [data-dir="down"] {
  grid-column: 2;
  grid-row: 2;
}

.touch-pad [data-dir="right"] {
  grid-column: 3;
  grid-row: 2;
}

.leaderboard {
  grid-area: leaderboard;
  padding: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.leaderboard-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
}

.leaderboard h2 {
  margin: 0;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.leaderboard-header > span {
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 800;
}

.leaderboard-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.leaderboard-tabs button {
  min-height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  padding: 0 14px;
  color: var(--muted);
  background: rgba(21, 29, 36, 0.72);
  cursor: pointer;
  font-weight: 900;
}

.leaderboard-tabs button.is-active {
  color: #07110d;
  background: var(--snake-head);
}

.leaderboard-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.leaderboard-list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 10px 12px;
  border-radius: 8px;
  background: rgba(21, 29, 36, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.rank {
  color: var(--accent);
  font-weight: 900;
}

.player {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-weight: 800;
}

.player small {
  display: block;
  margin-top: 2px;
  font-weight: 700;
}

.record-meta {
  color: var(--muted);
  font-size: 0.78rem;
}

.record-score {
  font-size: 1.15rem;
  font-weight: 900;
}

.empty-board {
  grid-column: 1 / -1;
  color: var(--muted);
  text-align: center;
}

.how-to-play {
  grid-area: rules;
  padding-top: 4px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.how-to-play details {
  width: 100%;
}

.how-to-play summary {
  width: fit-content;
  min-height: 42px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  padding: 0 18px;
  color: #07110d;
  background: var(--snake-head);
  cursor: pointer;
  font-weight: 900;
  list-style: none;
}

.how-to-play summary::-webkit-details-marker {
  display: none;
}

.rules-page {
  margin-top: 12px;
  padding: 18px;
  border-radius: 8px;
  background: rgba(21, 29, 36, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.rules-page h2 {
  margin: 0 0 10px;
  font-size: 1.35rem;
}

.rules-page p {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

body.theme-mint {
  --bg: #0d1514;
  --surface: #13211f;
  --surface-2: #1a2d2a;
  --snake: #9ef7ca;
  --snake-head: #d8ffe9;
  --food: #ffb84d;
  --accent: #78dce8;
  --touch-bg: rgba(216, 255, 233, 0.68);
  --control-bg: #d8ffe9;
}

body.theme-ember {
  --bg: #161211;
  --surface: #241b18;
  --surface-2: #30231f;
  --snake: #ffb15e;
  --snake-head: #ffe1b8;
  --food: #5dd6ff;
  --accent: #ff6b6b;
  --touch-bg: rgba(255, 225, 184, 0.68);
  --control-bg: #ffe1b8;
}

body.theme-valentine {
  --bg: #24141d;
  --surface: #2c1824;
  --surface-2: #3a2030;
  --grid: rgba(255, 214, 233, 0.07);
  --snake: #ff8bbd;
  --snake-head: #ffd6e7;
  --food: #ff476f;
  --accent: #ff9ac5;
  --touch-bg: rgba(255, 154, 197, 0.72);
  --touch-border: rgba(255, 235, 246, 0.42);
  --control-bg: #ff9ac5;
}

body.is-hit .play-area {
  animation: hit-shake 220ms ease;
}

@keyframes hit-shake {
  0%,
  100% {
    transform: translateX(0);
  }
  30% {
    transform: translateX(-6px);
  }
  65% {
    transform: translateX(5px);
  }
}

@keyframes sparkle-rain {
  from {
    transform: translateY(-10%) rotate(0deg);
  }
  to {
    transform: translateY(10%) rotate(18deg);
  }
}

@keyframes cannon-pop {
  0%,
  100% {
    opacity: 0.52;
    scale: 0.94;
  }
  45% {
    opacity: 0.9;
    scale: 1.04;
  }
}

@keyframes medal-pop {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.86);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (min-width: 821px) {
  .app-shell {
    width: min(1180px, calc(100vw - 48px));
    padding: 24px 0;
    place-items: start center;
  }

  .game-layout {
    width: auto;
    grid-template-columns: minmax(420px, min(620px, calc(100vh - 172px))) minmax(330px, 360px);
    grid-template-areas:
      "topbar topbar"
      "board quick"
      "board controls"
      "rules rules"
      "leaderboard leaderboard";
    column-gap: 24px;
    row-gap: 14px;
    align-items: start;
    justify-content: center;
  }

  .topbar {
    width: 100%;
    display: grid;
    grid-template-columns: minmax(250px, 1fr) minmax(520px, auto);
    align-items: end;
  }

  h1 {
    font-size: clamp(1.8rem, 3.6vw, 3.1rem);
  }

  .eyebrow {
    font-size: 0.7rem;
  }

  .score-strip {
    width: min(620px, 100%);
    max-width: none;
    justify-self: end;
    grid-template-columns: repeat(4, minmax(112px, 1fr));
    gap: 8px;
  }

  .stat {
    min-height: 54px;
    padding: 9px 12px;
  }

  .stat strong,
  .status-card strong {
    font-size: 1.32rem;
  }

  .play-area {
    width: min(100%, 620px, calc(100vh - 172px));
    justify-self: center;
  }

  .quick-cluster {
    width: 100%;
    grid-template-columns: minmax(170px, 1fr) auto;
    justify-content: stretch;
    align-self: start;
  }

  .action-metrics {
    grid-template-columns: repeat(2, minmax(78px, 1fr));
    gap: 7px;
  }

  .quick-actions {
    grid-template-columns: repeat(3, 38px);
    gap: 7px;
  }

  .quick-actions .icon-button {
    width: 38px;
    min-height: 38px;
    font-size: 0.9rem;
  }

  .control-panel {
    width: 100%;
    padding: 12px;
    gap: 12px;
    align-self: start;
  }

  select {
    min-height: 38px;
  }

  .status-card {
    min-width: 88px;
    min-height: 38px;
    padding: 5px 9px;
  }

  .how-to-play {
    padding-top: 0;
  }

  .how-to-play summary {
    min-height: 36px;
    padding: 0 14px;
  }

  .rules-page {
    padding: 14px;
  }

  .leaderboard {
    padding: 12px 0 18px;
  }

  .leaderboard-list li {
    min-height: 42px;
    padding: 8px 10px;
  }
}

@media (max-width: 820px) {
  .app-shell {
    width: min(100vw - 20px, 640px);
    padding: 16px 0;
    place-items: start center;
  }

  .game-layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "quick"
      "board"
      "touch"
      "controls"
      "rules"
      "leaderboard";
  }

  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .score-strip {
    width: 100%;
    grid-template-columns: repeat(4, 1fr);
  }

  .control-panel {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .quick-cluster {
    width: min(100%, 360px);
    justify-self: end;
    grid-template-columns: minmax(156px, 1fr) auto;
    gap: 10px;
  }

  .action-metrics {
    grid-template-columns: repeat(2, minmax(74px, 1fr));
    gap: 6px;
  }

  .quick-actions {
    grid-template-columns: repeat(3, 42px);
    gap: 8px;
  }

  .quick-actions .icon-button {
    width: 42px;
    min-height: 42px;
    font-size: 0.98rem;
  }

  .status-card {
    min-height: 42px;
    padding: 5px 8px;
  }

  .leaderboard {
    padding: 10px 0 24px;
  }
}

@media (max-width: 820px) and (orientation: portrait) {
  .touch-pad {
    position: static;
    width: 238px;
    grid-template-columns: repeat(3, 74px);
    grid-template-rows: repeat(3, 58px);
    display: grid;
    justify-self: center;
    gap: 5px;
    transform: none;
  }

  .touch-pad button {
    background: color-mix(in srgb, var(--control-bg) 88%, white 12%);
  }

  .leaderboard-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 460px) {
  .score-strip {
    gap: 5px;
  }

  .stat {
    min-height: 56px;
    padding: 9px 8px;
  }

  .stat span {
    font-size: 0.68rem;
  }

  .stat strong,
  .status-card strong {
    font-size: 1.18rem;
  }

  .quick-cluster {
    width: 100%;
  }

  .quick-actions {
    grid-template-columns: repeat(3, 39px);
    gap: 6px;
  }

  .quick-actions .icon-button {
    width: 39px;
    min-height: 39px;
  }

  .status-card {
    min-width: 0;
    min-height: 39px;
    padding: 5px 8px;
  }

  .control-panel {
    grid-template-columns: 1fr;
  }

  .score-entry {
    grid-template-columns: 1fr;
  }
}