/* Styles généraux */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea, #764ba2);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Conteneur du formulaire */
.container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 90%;
    max-width: 350px;
}

/* Titre */
h1 {
    margin-bottom: 20px;
    color: #333;
}

/* Message d'erreur */
.error {
    background: #ffdddd;
    color: #d9534f;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 15px;
    font-size: 14px;
}

/* Champ de saisie */
input {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input:focus {
    border-color: #667eea;
    outline: none;
}

/* Bouton de connexion */
button {
    width: 100%;
    background: #667eea;
    color: white;
    border: none;
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #5a67d8;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        width: 95%;
    }
}