/* ============================================================
   GAME-SPECIFIC STYLES
   ============================================================ */

/* ---------------------- 2048 ---------------------- */
.g2048-board {
  --cell: 82px;
  --gap: 10px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, var(--cell));
  grid-template-rows: repeat(4, var(--cell));
  gap: var(--gap);
  padding: var(--gap);
  background: var(--color-surface-3);
  border-radius: var(--radius-lg);
  touch-action: none;
}

.g2048-cell-bg {
  background: color-mix(in oklab, var(--color-surface-2), transparent 0%);
  border-radius: var(--radius-sm);
}

.g2048-tile {
  position: absolute;
  width: var(--cell);
  height: var(--cell);
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  transition: transform 120ms cubic-bezier(0.16, 1, 0.3, 1);
  color: #0b0d17;
  background: var(--color-primary);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

.g2048-tile.pop {
  animation: tilePop 160ms ease;
}

@keyframes tilePop {
  0% {
    transform: scale(0.6);
  }
  60% {
    transform: scale(1.08);
  }
  100% {
    transform: scale(1);
  }
}

.g2048-tile[data-v='2'] { background: #e8f6ff; color: #12303a; }
.g2048-tile[data-v='4'] { background: #c9edff; color: #0d2b34; }
.g2048-tile[data-v='8'] { background: #7fe0ff; color: #06222c; }
.g2048-tile[data-v='16'] { background: #00c9e8; color: #06222c; }
.g2048-tile[data-v='32'] { background: #00a8c2; color: #ffffff; }
.g2048-tile[data-v='64'] { background: #ff8fc4; color: #2b0a1b; }
.g2048-tile[data-v='128'] { background: #ff5fae; color: #2b0a1b; font-size: 1.4rem; }
.g2048-tile[data-v='256'] { background: #ff2e9a; color: #ffffff; font-size: 1.4rem; }
.g2048-tile[data-v='512'] { background: #ffd23f; color: #2b1f00; font-size: 1.4rem; }
.g2048-tile[data-v='1024'] { background: #ffb700; color: #2b1f00; font-size: 1.15rem; }
.g2048-tile[data-v='2048'] {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  font-size: 1.15rem;
  box-shadow: 0 0 24px var(--color-primary);
}

@media (max-width: 420px) {
  .g2048-board { --cell: 68px; --gap: 8px; }
  .g2048-tile { font-size: 1.3rem; }
}

/* ---------------------- Memory Match ---------------------- */
.memory-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  width: min(420px, 90vw);
}

.memory-card {
  position: relative;
  aspect-ratio: 1;
  perspective: 800px;
}

.memory-card-inner {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
}

.memory-card.flipped .memory-card-inner {
  transform: rotateY(180deg);
}

.memory-face {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  backface-visibility: hidden;
  font-size: 1.8rem;
}

.memory-face.back {
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
}

.memory-face.back::after {
  content: '?';
  color: var(--color-text-faint);
  font-family: var(--font-display);
  font-size: 1.5rem;
}

.memory-face.front {
  background: var(--color-primary-soft);
  border: 1px solid var(--color-primary);
  transform: rotateY(180deg);
}

.memory-card.matched .memory-face.front {
  background: color-mix(in oklab, var(--color-success) 18%, var(--color-surface));
  border-color: var(--color-success);
  animation: matchPulse 400ms ease;
}

@keyframes matchPulse {
  0% { transform: rotateY(180deg) scale(1); }
  50% { transform: rotateY(180deg) scale(1.08); }
  100% { transform: rotateY(180deg) scale(1); }
}

/* ---------------------- Tic Tac Toe ---------------------- */
.ttt-board {
  display: grid;
  grid-template-columns: repeat(3, 96px);
  grid-template-rows: repeat(3, 96px);
  gap: 8px;
  background: var(--color-surface-3);
  padding: 8px;
  border-radius: var(--radius-lg);
}

.ttt-cell {
  display: grid;
  place-items: center;
  background: var(--color-surface-2);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 2.6rem;
  transition: background var(--transition);
}

.ttt-cell:not(.filled):not(.disabled):hover {
  background: var(--color-surface);
  cursor: pointer;
}

.ttt-cell.x { color: var(--color-primary); }
.ttt-cell.o { color: var(--color-secondary); }
.ttt-cell.win { background: color-mix(in oklab, var(--color-success) 22%, var(--color-surface-2)); }

.ttt-mark {
  animation: markPop 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes markPop {
  from { transform: scale(0.4); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.ttt-modes {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: center;
}

.ttt-mode-btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
  font-size: var(--text-sm);
  transition: all var(--transition);
}

.ttt-mode-btn.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

@media (max-width: 420px) {
  .ttt-board { grid-template-columns: repeat(3, 82px); grid-template-rows: repeat(3, 82px); }
  .ttt-cell { font-size: 2.2rem; }
}

/* ---------------------- Word Scramble ---------------------- */
.scramble-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-5);
  width: min(480px, 90vw);
}

.scramble-hint {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-align: center;
  min-height: 1.4em;
}

.scramble-letters {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: center;
}

.scramble-letter {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--color-surface-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.3rem;
  text-transform: uppercase;
  transition: all var(--transition);
}

.scramble-letter:hover:not(.used) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.scramble-letter.used {
  opacity: 0.25;
  pointer-events: none;
}

.scramble-answer {
  display: flex;
  gap: var(--space-2);
  min-height: 56px;
}

.scramble-slot {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.3rem;
  text-transform: uppercase;
  color: var(--color-primary);
}

.scramble-slot.filled {
  border-style: solid;
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  cursor: pointer;
}

.scramble-category {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  font-weight: 600;
}

/* ---------------------- Minesweeper ---------------------- */
.mine-board {
  --mcell: 34px;
  display: grid;
  gap: 3px;
  background: var(--color-surface-3);
  padding: 8px;
  border-radius: var(--radius-lg);
  touch-action: manipulation;
}

.mine-cell {
  width: var(--mcell);
  height: var(--mcell);
  display: grid;
  place-items: center;
  background: var(--color-surface-2);
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 700;
  font-family: var(--font-mono);
  transition: background var(--transition);
  user-select: none;
}

.mine-cell.hidden-cell:hover {
  background: var(--color-surface);
  cursor: pointer;
}

.mine-cell.revealed {
  background: var(--color-surface-offset, var(--color-surface));
  box-shadow: inset 0 0 0 1px var(--color-divider);
}

.mine-cell.flagged { color: var(--color-accent); cursor: pointer; }
.mine-cell.mine { background: var(--color-danger); color: #fff; }
.mine-cell.mine-hit { background: var(--color-danger); color: #fff; animation: matchPulse 300ms ease; }

.mine-cell[data-n='1'] { color: #4fa8ff; }
.mine-cell[data-n='2'] { color: var(--color-success); }
.mine-cell[data-n='3'] { color: var(--color-danger); }
.mine-cell[data-n='4'] { color: var(--color-secondary); }
.mine-cell[data-n='5'] { color: var(--color-warning, #964219); }
.mine-cell[data-n='6'] { color: var(--color-accent); }

.mine-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
}

.mine-flag-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background: var(--color-surface-2);
}

.mine-flag-toggle.active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: color-mix(in oklab, var(--color-accent) 12%, var(--color-surface));
}

@media (max-width: 420px) {
  .mine-board { --mcell: 26px; }
  .mine-cell { font-size: 0.7rem; }
}

/* ---------------------- Sudoku ---------------------- */
.hud-row {
  display: flex;
  justify-content: center;
  gap: var(--space-5);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  min-width: 72px;
}
.hud-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}
.hud-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-lg);
  color: var(--color-text);
}
.sudoku-board {
  --scell: 72px;
  display: grid;
  grid-template-columns: repeat(4, var(--scell));
  grid-auto-rows: var(--scell);
  gap: 2px;
  background: var(--color-border);
  padding: 2px;
  border-radius: var(--radius-lg);
  width: fit-content;
  margin: 0 auto var(--space-5);
}
/* box separators: thicker gaps between 2x2 boxes */
.sudoku-cell.box-r { margin-right: 4px; }
.sudoku-cell.box-b { margin-bottom: 4px; }
.sudoku-cell {
  width: var(--scell);
  height: var(--scell);
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--color-primary);
  background: var(--color-surface-2);
  transition: background 140ms, box-shadow 140ms;
}
.sudoku-cell:hover:not(.given) {
  background: color-mix(in oklab, var(--color-surface-3), white 6%);
}
.sudoku-cell.selected {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
.sudoku-cell.given {
  color: var(--color-text);
  cursor: default;
}
.sudoku-cell.wrong {
  color: var(--color-danger);
}
.sudoku-pad {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
}
.btn-pad {
  min-width: 56px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-lg);
  background: var(--color-surface-3);
}
.btn-pad-erase {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
}
@media (max-width: 420px) {
  .sudoku-board { --scell: 60px; }
  .sudoku-cell { font-size: 1.3rem; }
  .btn-pad { min-width: 44px; }
}

/* ---------------------- Simon ---------------------- */
.simon-status {
  text-align: center;
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
  min-height: 1.5em;
}
.simon-board {
  display: grid;
  grid-template-columns: repeat(2, 150px);
  grid-template-rows: repeat(2, 150px);
  gap: 14px;
  width: fit-content;
  margin: 0 auto var(--space-5);
}
.simon-pad {
  border-radius: 24px;
  cursor: pointer;
  background: color-mix(in oklab, var(--pad-color, var(--color-primary)) 35%, var(--color-surface));
  transition: background 160ms, box-shadow 160ms, transform 160ms;
  box-shadow: inset 0 0 0 2px color-mix(in oklab, var(--pad-color, var(--color-primary)) 50%, transparent);
}
.simon-pad:hover {
  background: color-mix(in oklab, var(--pad-color, var(--color-primary)) 50%, var(--color-surface));
}
.simon-pad.lit {
  background: color-mix(in oklab, var(--pad-color, var(--color-primary)) 90%, white);
  box-shadow: 0 0 26px color-mix(in oklab, var(--pad-color, var(--color-primary)) 80%, transparent), inset 0 0 0 2px color-mix(in oklab, var(--pad-color, var(--color-primary)) 90%, white);
  transform: scale(0.96);
}
.simon-pad.simon-pad-0 { --pad-color: var(--color-primary); }
.simon-pad.simon-pad-1 { --pad-color: var(--color-secondary); }
.simon-pad.simon-pad-2 { --pad-color: var(--color-accent); }
.simon-pad.simon-pad-3 { --pad-color: #56e39f; }
@media (max-width: 420px) {
  .simon-board { grid-template-columns: repeat(2, 128px); grid-template-rows: repeat(2, 128px); }
}

/* ---------------------- Hanoi ---------------------- */
.hanoi-board {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: var(--space-6);
  padding: var(--space-5) var(--space-4);
  background: var(--color-surface-3);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  min-height: 220px;
}
.hanoi-peg {
  position: relative;
  width: 150px;
  height: 200px;
  display: flex;
  align-items: flex-end;
  flex-direction: column-reverse;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: border-color 160ms, background 160ms;
}
.hanoi-peg:hover {
  border-color: var(--color-border);
}
.hanoi-peg.selected {
  border-color: var(--color-primary);
  background: color-mix(in oklab, var(--color-primary) 12%, transparent);
}
.hanoi-stack {
  position: absolute;
  bottom: 12px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 4px;
}
.hanoi-slot {
  width: 100%;
  height: 22px;
  display: flex;
  justify-content: center;
}
.hanoi-disk {
  height: 22px;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3), inset 0 0 0 1px rgba(255,255,255,0.15);
  transition: width 180ms cubic-bezier(0.16,1,0.3,1);
}
.hanoi-rod {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 150px;
  background: var(--color-border);
  border-radius: 3px;
  z-index: 0;
}
.hanoi-base {
  width: 100%;
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
}
@media (max-width: 420px) {
  .hanoi-peg { width: 110px; height: 180px; }
}