/* ==========================================================================
   BrainTrain - Styles Cross Math (Grille Croisée d'Équations)
   ========================================================================== */

.cm-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  gap: 0.625rem;
  justify-content: flex-start;
}

/* --------------------------------------------------------------------------
   Plateau de Jeu Cross Math
   -------------------------------------------------------------------------- */
.cm-board-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  overflow-x: auto;
  padding: 0.35rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  box-sizing: border-box;
}

.cm-grid {
  display: grid;
  align-items: center;
  justify-items: center;
  gap: clamp(2px, 1vw, 6px);
  user-select: none;
  touch-action: manipulation;
}

/* --------------------------------------------------------------------------
   Cellules de Nombres (Cases de la grille) - Gros Chiffres
   -------------------------------------------------------------------------- */
.cm-cell {
  width: clamp(38px, 11vw, 54px);
  height: clamp(38px, 11vw, 54px);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.125rem, 4.5vw, 1.5rem);
  font-weight: 800;
  box-sizing: border-box;
  transition: all var(--transition-fast);
}

/* Case fixe (donnée) */
.cm-cell.given {
  background-color: #F5F3EF;
  border: 2px solid var(--border-strong);
  color: var(--text-primary);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* Case vide à compléter (modifiable) */
.cm-cell.blank {
  background-color: #FFFFFF;
  border: 2px dashed var(--accent-primary);
  color: var(--accent-primary);
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(79, 70, 229, 0.1);
}

.cm-cell.blank:hover {
  background-color: #EEF2FF;
  transform: translateY(-1px);
}

.cm-cell.blank.selected {
  background-color: #EEF2FF;
  border-style: solid;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.35);
  transform: scale(1.08);
  z-index: 5;
}

.cm-cell.blank.filled {
  border-style: solid;
  background-color: #FAF5FF;
  color: #6B21A8;
  border-color: #A855F7;
}

/* --------------------------------------------------------------------------
   Opérateurs et Égaux dans la grille
   -------------------------------------------------------------------------- */
.cm-op {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(1.125rem, 4.5vw, 1.5rem);
  font-weight: 800;
  color: var(--text-secondary);
  line-height: 1;
}

.cm-equal {
  font-size: clamp(0.9375rem, 3.8vw, 1.25rem);
  font-weight: 700;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Badges de Résultats (Lignes & Colonnes)
   -------------------------------------------------------------------------- */
.cm-result {
  min-width: clamp(38px, 11vw, 54px);
  height: clamp(38px, 11vw, 54px);
  padding: 0 0.25rem;
  border-radius: var(--radius-sm);
  background-color: #1E1B4B;
  color: #FCD34D;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(0.9375rem, 3.8vw, 1.25rem);
  font-weight: 800;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
  transition: all var(--transition-fast);
}

.cm-result.status-valid {
  background-color: #059669;
  color: #FFFFFF;
  box-shadow: 0 0 0 2px rgba(5, 150, 105, 0.3);
}

.cm-result.status-invalid {
  background-color: #DC2626;
  color: #FFFFFF;
  animation: shake 300ms ease;
}

/* --------------------------------------------------------------------------
   Plaque des Nombres Disponibles à placer
   -------------------------------------------------------------------------- */
.cm-bank-card {
  width: 100%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.875rem;
  box-shadow: var(--shadow-sm);
}

.cm-bank-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.625rem;
  gap: 0.5rem;
}

.cm-bank-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-secondary);
}

.cm-sort-btn {
  background-color: var(--bg-subtle);
  border: 1.5px solid var(--border-strong);
  border-radius: var(--radius-full);
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  touch-action: manipulation;
}

.cm-sort-btn:hover {
  background-color: #EEF2FF;
  border-color: var(--accent-primary);
}

.cm-sort-btn:active {
  transform: scale(0.95);
}

.cm-bank-tiles {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.625rem;
}

.cm-bank-tile {
  min-width: 54px;
  height: 52px;
  padding: 0 0.75rem;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #FFFFFF 0%, #FAF8F5 100%);
  border: 2px solid var(--accent-primary);
  color: var(--accent-primary);
  font-size: 1.45rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.15);
  transition: all var(--transition-fast);
  user-select: none;
  touch-action: manipulation;
}

.cm-bank-tile:hover {
  transform: translateY(-2px);
  background-color: #EEF2FF;
}

.cm-bank-tile:active {
  transform: scale(0.92);
}

.cm-bank-tile.used {
  opacity: 0.22;
  pointer-events: none;
  border-color: var(--border-subtle);
  color: var(--text-muted);
  box-shadow: none;
}