html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background: #0e0e0e; /* fond noir */
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Conteneur principal */
.bloc-principal {
    background: #1a1a1a;
    color: white;
    padding: 2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 340px;
    text-align: center;
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.1);
    border: 2px solid #ffd700;
}

/* Titre */
.bloc-principal h1 {
    margin-bottom: 1.5rem;
    font-size: 1.4rem;
    color: white;
}

/* Champs de formulaire */
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.7rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 1rem;
}

/* Bouton */
button {
    width: 100%;
    padding: 0.8rem;
    background: #ffd700;
    color: black;
    border: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1rem;
    cursor: pointer;
}

button:hover {
    background: #e6c200;
}

/* Message d'erreur */
.error {
    background-color: #ffdddd;
    color: #d8000c;
    padding: 10px;
    margin-bottom: 1rem;
    border-radius: 5px;
    font-weight: bold;
}

/* Lien inscription */
.link {
    margin-top: 1rem;
    color: white;
}

.link a {
    color: #ffd700;
    text-decoration: none;
}