body {
  font-family: Arial, sans-serif;
  background: #f5f3ee;
  margin: 0;
  padding: 16px;
}
h1 { color: #b5651d; }

.controls { margin-bottom: 12px; }
button, select {
  font-size: 16px;
  padding: 8px 14px;
  margin: 3px;
  border-radius: 8px;
  border: 2px solid #b5651d;
  background: #ffe0b2;
  cursor: pointer;
}

#board {
  display: grid;
  touch-action: none;
  width: 100%;
  margin: 0;
  padding: 12px;
  gap: 6px;
  background: white;
  border-radius: 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}
.cell {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs, 28px);
  cursor: pointer;
  user-select: none;
  border-radius: 10px;
}
.cell:hover { filter: brightness(1.06); }
.cell.conflict { box-shadow: inset 0 0 0 3px #d32f2f; }
.cell.x { color: rgba(0,0,0,0.45); font-size: calc(var(--fs, 28px) * 0.7); }

#status { min-height: 70px; margin-bottom: 8px; }
#counter { display: inline-block; background: white; border-radius: 20px; padding: 6px 16px; font-size: 18px; color: #5d3a1a; box-shadow: 0 1px 4px rgba(0,0,0,0.1); }
#message { margin: 8px 0 0; }
#message.win { display: block; font-size: 20px; text-align: center; font-weight: bold; color: white; background: #4caf50; border-radius: 14px; padding: 10px 16px; animation: pop 0.4s; }
@keyframes pop { from { transform: scale(0.8); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* Mode "cases effacées" : les cases exclues disparaissent au lieu d'afficher ✖ */
body.vanish .cell.x {
  background: transparent !important;
  color: transparent;
  box-shadow: none;
}
body.vanish .cell.x:hover { filter: none; background: rgba(0,0,0,0.04) !important; }

#layout {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
#side { flex: 0 0 300px; text-align: left; }
#side h1 { margin-top: 0; font-size: 26px; }
#side .controls { display: flex; flex-wrap: wrap; }
#board-area { flex: 1; min-width: 0; display: flex; justify-content: center; }
@media (max-width: 800px) {
  #layout { flex-direction: column; align-items: stretch; }
  #side { flex: none; text-align: center; }
  #side .controls { justify-content: center; }
}
.panel {
  max-width: 360px;
  margin: 0 auto 12px;
  padding: 12px 16px;
  background: white;
  border-radius: 16px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.12);
  text-align: left;
}
#side .panel { max-width: none; }
.panel[hidden] { display: none; }

.panel h2 { margin: 0 0 8px; font-size: 18px; color: #b5651d; }

.panel label { display: block; margin: 8px 0; cursor: pointer; }

#loading { text-align: center; color: #5d3a1a; padding: 60px 20px; }
#loading[hidden] { display: none; }
#loading p { font-size: 18px; }
.spinner {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  border: 6px solid #ffe0b2;
  border-top-color: #b5651d;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }