body {
  font-family: 'Segoe UI', sans-serif;
  background: #eef5f9;
  text-align: center;
  margin: 0;
  padding: 0;
  margin-bottom: 80px;
}

h1 {
  background: #0074D9;
  text-align: center;
  color: white;
  padding: 1rem;
  margin: 0;
}

.boite {
  margin-top: 10px auto;
  font-weight: bold;
  margin: 10px auto;
  padding: 1rem;
  max-width: 600px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.buttons button {
  margin: 1rem;
  padding: 1rem 2rem;
  font-size: 1.2rem;
}

#symbol {
  font-size: 3rem;
  margin: 2rem 0;
}



.popup-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.popup-box {
  background: white;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 0 15px black;

  text-align: center;
  font-size: 1.2rem;
}

#feedbackSolo {
  font-size: 1.2rem;
  margin-top: 1rem;
  color: #333;
  transition: opacity 0.3s ease;
}

#feedbackSolo.hidden {
  opacity: 0;
}

.hidden {
  display: none;
}