body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  margin: 40px;
  background-color: #f9f9f9;
  color: #333;
}
h1 {
  text-align: center;
  color: #00695c;
}
form {
  max-width: 500px;
  margin: auto;
  background-color: #ffffff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
label {
  display: block;
  margin: 15px 0 5px;
}
input, select, button {
  width: 100%;
  padding: 8px;
  margin-top: 5px;
  border-radius: 5px;
  border: 1px solid #ccc;
}
button {
  background-color: #00796b;
  color: white;
  font-weight: bold;
  cursor: pointer;
  margin-top: 20px;
}
button:hover {
  background-color: #004d40;
}
#resultat {
  margin-top: 30px;
  padding: 15px;
  font-weight: bold;
  text-align: center;
  border-radius: 8px;
}
.vert { background-color: #b2fab4; }
.vert-pale { background-color: #d0f0c0; }
.jaune { background-color: #fff59d; }
.rouge { background-color: #ef9a9a; }
.footer {
  text-align: center;
  margin-top: 40px;
}
.cnesst-image {
  width: 150px;
  margin-bottom: 10px;
}
/* Responsive Design */
@media (max-width: 600px) {
  body {
    margin: 20px;
  }
  form {
    padding: 15px;
  }
  input, select, button {
    font-size: 16px;
  }
  .cnesst-image {
    width: 100px;
  }
}
