body {
  background: linear-gradient(135deg, #222831, #393e46);
  font-family: "Segoe UI", sans-serif;
  color: #eeeeee;
  text-align: center;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 600px;
  margin: 40px auto;
  padding: 20px;
}

/***** Titre *****/
h1 {
  font-size: 2.5em;
  margin-bottom: 10px;
}

/****** Canvas fond *****/
#canevas {
  display: block;
  margin: 20px auto;
  background-color: #000;
  border-radius: 10px;
  box-shadow: 0 0 20px #bdc107;
}

/***** Vies ****/
#vies {
  font-size: 1.2em;
  margin-bottom: 10px;
}

/**** Message de fin ****/
#message {
  font-size: 1.5em;
  font-weight: bold;
  color: #ff6b6b;
  margin-top: 15px;
}

/**** Bouton démarrer ***/
#demarrer {
  background: linear-gradient(45deg, #ffd700, #ff8c00);
  color: #000;
  border: none;
  border-radius: 25px;
  padding: 10px 25px;
  font-size: 1em;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.2s ease;
}

#demarrer:hover {
  transform: scale(1.1);
}