/* ซูโดกุ — tab in the เกม hub. --sudoku-note-color is a fixed literal (amber), not
   theme-derived — notes need to read as visually distinct from both the given clues
   (var(--text)) and the player's own answers (var(--accent)) at a glance, and tying it to
   --accent (as before) meant notes vs. answers were the same hue at different opacity. */

.sudoku-body {
  --sudoku-note-color: #f0ad2e;
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 16px 20px calc(var(--safe-bottom) + 16px);
  align-items: center;
  gap: 14px;
}

.sudoku-idle {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
  width: 100%;
  padding: 40px 20px;
}

.sudoku-idle-title {
  font-size: 20px;
  font-weight: 800;
}

.sudoku-idle-sub {
  font-size: 13px;
  color: var(--sub);
  max-width: 240px;
}

.sudoku-diff-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sudoku-diff-btn {
  background: var(--card-hi);
  border: none;
  color: var(--sub);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
}

.sudoku-diff-btn.active {
  background: var(--accent);
  color: #fff;
}

.sudoku-best-line {
  font-size: 12px;
  color: var(--sub);
}

.sudoku-start-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 14.5px;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  margin-top: 4px;
}

.sudoku-loading {
  padding: 60px 20px;
  text-align: center;
  color: var(--sub);
  font-size: 14px;
}

.sudoku-score-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 320px;
  font-size: 12px;
  color: var(--sub);
}

.sudoku-score-row b {
  color: var(--text);
  font-size: 15px;
}

.sudoku-new-btn {
  background: var(--card-hi);
  border: none;
  color: var(--sub);
  border-radius: var(--radius-pill);
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}

.sudoku-legend {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 11.5px;
  color: var(--sub);
}

.sudoku-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.sudoku-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-circle);
}

.sudoku-legend-given {
  background: var(--text);
}

.sudoku-legend-answer {
  background: var(--accent);
}

.sudoku-legend-note {
  background: var(--sudoku-note-color);
}

.sudoku-board-wrap {
  position: relative;
  width: 100%;
  max-width: 320px;
}

.sudoku-grid {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 2px solid var(--sub);
  border-radius: var(--radius-md);
  overflow: hidden;
  width: 100%;
  aspect-ratio: 1 / 1;
}

.sudoku-cell {
  box-sizing: border-box;
  background: var(--card);
  border: none;
  color: var(--accent);
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  touch-action: manipulation;
}

.sudoku-cell.given {
  color: var(--text);
  font-weight: 800;
}

.sudoku-cell.peer {
  background: var(--card-hi);
}

.sudoku-cell.same-value:not(.selected) {
  text-decoration: underline;
}

.sudoku-cell.selected {
  background: var(--accent);
  color: #fff;
}

.sudoku-cell.conflict {
  color: var(--red) !important;
}

.sudoku-cell.wrong {
  color: var(--red) !important;
  background: rgba(220, 38, 38, 0.25);
  animation: sudoku-shake 0.4s ease;
}

@keyframes sudoku-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-5px); }
  40% { transform: translateX(5px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.sudoku-cell.boxline-right {
  border-right: 2px solid var(--sub);
}

.sudoku-cell.boxline-bottom {
  border-bottom: 2px solid var(--sub);
}

.sudoku-notes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  width: 100%;
  height: 100%;
}

.sudoku-notes span {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 8px;
  font-weight: 800;
  color: var(--sudoku-note-color);
}

.sudoku-cell.selected .sudoku-notes span {
  color: rgba(255, 255, 255, 0.85);
}

.sudoku-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: rgba(0, 0, 0, 0.55);
  border-radius: var(--radius-lg);
  text-align: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) ease;
}

.sudoku-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.sudoku-overlay-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
}

.sudoku-overlay-sub {
  font-size: 13px;
  color: var(--sub);
  max-width: 260px;
}

.sudoku-numpad {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  width: 100%;
  max-width: 320px;
}

.sudoku-num-btn {
  background: var(--card-hi);
  border: none;
  color: var(--text);
  border-radius: var(--radius-md);
  height: 44px;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
}

.sudoku-num-btn:active {
  background: var(--accent);
  color: #fff;
}

.sudoku-erase-btn {
  color: var(--sub);
}

.sudoku-hint-btn {
  background: var(--card-hi);
  border: none;
  color: var(--text);
  border-radius: var(--radius-pill);
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.sudoku-hint-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.sudoku-bottom-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sudoku-notes-toggle {
  background: var(--card-hi);
  border: none;
  color: var(--text);
  border-radius: var(--radius-pill);
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.sudoku-notes-toggle.active {
  background: var(--accent);
  color: #fff;
}