body {
    background: #121212;
    font-family: "Segoe UI", sans-serif;
    margin: 0;
    padding: 40px;
    color: #82ff1f;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

h2 {
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 700;
    color: #82ff1f;
    text-shadow: none;
}

form {
    background: #000;
    border: 2px solid #82ff1f;
    border-radius: 10px;
    padding: 30px 40px;
    min-width: 320px;
    box-shadow: none;
}

label {
    display: block;
    margin-bottom: 10px;
    font-size: 18px;
    cursor: pointer;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    margin-bottom: 20px;
    border: 2px solid #82ff1f;
    border-radius: 6px;
    background: #121212;
    color: #82ff1f;
    font-size: 18px;
    box-sizing: border-box;
    transition: border-color 0.2s ease;
}

input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: #a6ff39;
    box-shadow: none;
}

input[type="submit"] {
    width: 100%;
    background-color: #82ff1f;
    border: none;
    color: #000;
    padding: 14px 0;
    font-weight: 700;
    font-size: 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

input[type="submit"]:hover {
    background-color: #a6ff39;
}

.error {
    background-color: #ff4a4a;
    color: #000;
    padding: 12px 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 700;
    box-shadow: none;
    text-align: center;
}

/* --- Nouveau style bouton Mettre à jour --- */
button.update-btn {
    background-color: #82ff1f;
    color: #000;
    border: none;
    padding: 12px 30px;
    font-weight: 700;
    font-size: 16px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    box-shadow: none;
    margin-top: 15px;
}

button.update-btn:hover {
    background-color: #a6ff39;
}

/* --- Nouveau style lien Déconnexion --- */
a.logout-link {
    color: #a6ff39;
    font-weight: 700;
    text-decoration: none;
    margin-top: 20px;
    transition: color 0.2s ease;
}

a.logout-link:hover {
    color: #82ff1f;
    text-decoration: underline;
}