html {
  font-size: 14px;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin-bottom: 60px;
}

/* Game specific styles */
.cell {
  aspect-ratio: 1;
  background-color: #f8f9fa;
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s;
}

.cell:hover {
  background-color: #e9ecef;
}

.cell.x {
  color: #dc3545;
}

.cell.o {
  color: #0d6efd;
}

.cell.highlight {
  background-color: #ffc107;
}

.footer {
  position: absolute;
  bottom: 0;
  width: 100%;
  white-space: nowrap;
  line-height: 60px;
}