body {
    font-family: Arial, sans-serif;
    background-color: #2c3e50; /* Gris sombre */
    color: #ffffff;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 800px;
    margin: 50px auto;
    padding: 20px;
    background-color: #004d40; /* Vert canard */
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.5);
}

h1 {
    text-align: center;
    color: #1abc9c; /* Vert clair */
    font-size: 28px;
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

label {
    font-weight: bold;
    color: #b2dfdb; /* Vert pâle */
}

input, textarea {
    padding: 10px;
    border: none;
    border-radius: 5px;
    width: 100%;
    font-family: Arial, sans-serif;
    font-size: 14px;
    background-color: #34495e; /* Gris foncé */
    color: #ffffff;
}

textarea {
    resize: none;
}

button {
    padding: 10px;
    background-color: #1abc9c; /* Vert clair */
    border: none;
    color: #004d40; /* Vert canard */
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: #16a085; /* Vert plus sombre */
}

.flash-message {
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid transparent;
    border-radius: 5px;
    font-size: 14px;
    font-family: Arial, sans-serif;
    text-align: center;
}

.flash-info {
    background-color: #1abc9c; /* Vert clair */
    border-color: #004d40; /* Bordure vert canard */
    color: #ffffff;
}

.flash-error {
    background-color: #e74c3c; /* Rouge vif */
    border-color: #c0392b; /* Rouge foncé */
    color: #ffffff;
}

.form-options label {
    display: block;
    margin-bottom: 10px;
}

.form-buttons {
    text-align: center;
}

button[type="submit"] {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.form-shutdown button {
    background-color: #e74c3c; /* Rouge vif */
    color: #ffffff;
    margin-top: 20px;
}

button[type="submit"]:hover {
    background-color: #c0392b; /* Rouge foncé */
}