:root {
  --lab-bg: #e7e4d9;
  --lab-surface: rgba(255, 252, 246, 0.84);
  --lab-surface-strong: #f5f1e8;
  --lab-text: #1f2f2b;
  --lab-muted: #5f6a65;
  --lab-accent: #c07a4b;
  --lab-accent-strong: #a5653e;
  --lab-line: rgba(31, 47, 43, 0.12);
  --lab-shadow: 0 22px 60px rgba(31, 47, 43, 0.12);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  min-height: 100svh !important;
  height: auto !important;
  justify-content: flex-start !important;
  align-items: center !important;
  overflow-x: hidden !important;
  overflow-y: auto !important;
  padding: clamp(16px, 3vw, 32px) !important;
  gap: clamp(14px, 2.5vw, 24px);
  background:
    radial-gradient(circle at top right, rgba(192, 122, 75, 0.16), transparent 24rem),
    radial-gradient(circle at bottom left, rgba(31, 47, 43, 0.08), transparent 22rem),
    var(--lab-bg) !important;
  color: var(--lab-text) !important;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(31, 47, 43, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 47, 43, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.35;
}

.lab-topbar {
  position: sticky;
  top: 10px;
  z-index: 60;
  width: min(1100px, 100%);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.85rem;
  padding: 0.9rem 1rem;
  border: 1px solid var(--lab-line);
  border-radius: 1.4rem;
  background: rgba(255, 250, 243, 0.88);
  backdrop-filter: blur(18px);
  box-shadow: var(--lab-shadow);
}

.lab-topbar__links,
.lab-topbar__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
}

.lab-topbar__actions {
  justify-content: flex-end;
}

.lab-topbar__meta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 2.8rem;
  padding: 0.65rem 0.95rem;
  border-radius: 999px;
  border: 1px solid var(--lab-line);
  background: rgba(255, 255, 255, 0.75);
  color: var(--lab-text);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.lab-topbar__meta::before {
  content: '';
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: var(--lab-accent);
  box-shadow: 0 0 0 6px rgba(192, 122, 75, 0.12);
}

.lab-topbar__status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--lab-line);
  background: rgba(31, 47, 43, 0.06);
  color: var(--lab-muted);
  font-size: 0.86rem;
  font-weight: 700;
  white-space: nowrap;
}

.lab-topbar__link,
.lab-topbar__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  padding: 0.72rem 1rem;
  border: 1px solid var(--lab-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--lab-text);
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    border-color 180ms ease,
    color 180ms ease,
    box-shadow 180ms ease;
}

.lab-topbar__link:hover,
.lab-topbar__button:hover {
  transform: translateY(-1px);
  background: var(--lab-accent);
  border-color: var(--lab-accent);
  color: #fff7ef;
  box-shadow: 0 16px 30px rgba(192, 122, 75, 0.18);
}

.lab-topbar__button--ghost {
  background: rgba(31, 47, 43, 0.06);
  color: var(--lab-text);
}

.lab-topbar__button--ghost:hover {
  background: rgba(31, 47, 43, 0.14);
  border-color: rgba(31, 47, 43, 0.18);
  color: var(--lab-text);
  box-shadow: none;
}

body > h1,
body > header,
body > main,
body > section,
body > form,
body > .header,
body > .container,
body > .controls,
body > .score-container,
body > .status-bar,
body > .instructions,
body > .mobile-controls,
body > #game-container,
body > .game-container {
  width: min(1100px, 100%);
}

h1 {
  margin-bottom: 0.8rem !important;
  color: var(--lab-text) !important;
  text-align: center !important;
  letter-spacing: -0.04em !important;
  font-size: clamp(2.2rem, 5vw, 3.8rem) !important;
  text-shadow: none !important;
  background: none !important;
  -webkit-text-fill-color: initial !important;
}

.subtitle,
.controls p,
.instructions p,
.instruction-item span:last-child,
.control-item span:last-child,
.modal-subtitle,
.winner-text,
.modal-message,
.game-status,
#overlay p {
  color: var(--lab-muted) !important;
}

.container,
.game-container,
#game-container,
.board-container,
.controls,
.instructions,
.score-container,
.status-bar,
.game-info,
.move-history,
.game-status,
.ui-overlay,
.info-panel,
.stat-item,
.player-controls,
.modal-content,
.modal,
.score-box {
  border-color: var(--lab-line) !important;
  box-shadow: var(--lab-shadow) !important;
}

.container,
.controls,
.instructions,
.score-container,
.status-bar,
.game-info,
.move-history,
.game-status,
.ui-overlay,
.info-panel,
.stat-item,
.player-controls,
.score-box,
.modal-content {
  background: var(--lab-surface) !important;
  color: var(--lab-text) !important;
}

.game-container,
#game-container,
.board-container {
  width: min(1100px, 100%) !important;
  max-width: 100% !important;
  border-radius: 1.6rem !important;
  border: 1px solid var(--lab-line) !important;
  background: var(--lab-surface-strong) !important;
  overflow: hidden !important;
}

.chess-board,
canvas {
  display: block;
  max-width: 100%;
  height: auto !important;
}

canvas {
  background: linear-gradient(180deg, rgba(31, 47, 43, 0.04), rgba(31, 47, 43, 0.1)) !important;
}

button,
.btn,
.mobile-btn,
select {
  border-radius: 1rem !important;
}

button,
.btn,
.mobile-btn {
  border: 1px solid transparent !important;
  box-shadow: none !important;
}

button:hover,
.btn:hover,
.mobile-btn:hover {
  transform: translateY(-1px) !important;
}

.start-btn,
.restart-btn,
.btn,
button {
  background: linear-gradient(135deg, var(--lab-accent), #cf9269) !important;
  color: #fff8f1 !important;
}

.secondary,
.restart-btn,
.mode-btn,
.mute-btn,
.reset-btn {
  background: rgba(31, 47, 43, 0.08) !important;
  color: var(--lab-text) !important;
  border-color: var(--lab-line) !important;
}

select,
.difficulty-select {
  background: rgba(255, 255, 255, 0.82) !important;
  color: var(--lab-text) !important;
  border: 1px solid var(--lab-line) !important;
}

.instructions,
.controls,
.score-container,
.status-bar,
.game-info,
.move-history,
.game-status {
  border-radius: 1.45rem !important;
}

.info-value,
.score-value,
.status-value,
.modal-stat-value,
.stat-value,
.score-display {
  color: var(--lab-accent) !important;
}

.panel-title,
.instructions h2,
.player-controls h3,
.modal-title,
.header h1,
#overlay h2 {
  color: var(--lab-text) !important;
}

.board-coordinates,
.score-label,
.status-label,
.info-label,
.stat-label,
.modal-stat-label {
  color: var(--lab-muted) !important;
}

.move-history {
  max-height: 18rem !important;
}

.ui-overlay,
.controls,
.status-bar,
.score-container,
.stats-container,
.game-info,
.modal-stats,
.modal-buttons,
.mobile-player-controls,
.mobile-buttons {
  gap: 0.9rem !important;
}

.mobile-btn {
  min-width: 3.4rem;
  min-height: 3.4rem;
  background: rgba(31, 47, 43, 0.08) !important;
  color: var(--lab-text) !important;
  border: 1px solid var(--lab-line) !important;
}

.platformer-touch-controls {
  display: none;
  width: min(1100px, 100%);
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.platformer-touch-controls__group {
  display: flex;
  gap: 0.75rem;
}

.platformer-touch-controls__button {
  min-width: 4rem;
  min-height: 4rem;
  padding: 0;
  border-radius: 1.25rem !important;
  border: 1px solid var(--lab-line) !important;
  background: rgba(255, 255, 255, 0.74) !important;
  color: var(--lab-text) !important;
  font-size: 1rem;
  font-weight: 800;
}

.platformer-touch-controls__button--primary {
  background: linear-gradient(135deg, var(--lab-accent), #cf9269) !important;
  color: #fff8f1 !important;
}

@media (max-width: 900px) {
  body {
    padding-inline: 0.85rem !important;
  }

  .lab-topbar {
    top: 6px;
  }

  .controls,
  .score-container,
  .status-bar,
  .game-info,
  .stats-container,
  .modal-stats,
  .modal-buttons,
  .mobile-player-controls,
  .mobile-buttons {
    flex-direction: column !important;
    align-items: stretch !important;
  }

  .info-container {
    width: 100% !important;
    flex-direction: column !important;
  }

  .instruction-grid {
    grid-template-columns: 1fr !important;
  }
}

@media (max-width: 640px) {
  .lab-topbar {
    padding: 0.8rem;
  }

  .lab-topbar__meta,
  .lab-topbar__links,
  .lab-topbar__actions {
    width: 100%;
    justify-content: center;
  }

  .lab-topbar__link,
  .lab-topbar__button,
  .lab-topbar__status {
    flex: 1 1 0;
  }

  .game-container,
  #game-container,
  .board-container,
  .controls,
  .instructions,
  .score-container,
  .status-bar,
  .game-info,
  .move-history,
  .game-status,
  .ui-overlay {
    border-radius: 1.2rem !important;
  }

  .platformer-touch-controls {
    display: flex;
  }
}