.site-main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f8f9fa;
    padding: 40px 0;
}

.login-box {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.2);
    width: 380px;
    padding: 40px 30px;
    text-align: center;
}

.login-box h2 {
    color: #d62828;
    margin-bottom: 25px;
}

.login-box label {
    display: block;
    text-align: left;
    font-size: 0.9em;
    margin-bottom: 5px;
    color: #333;
}

.login-box input {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid #ccc;
    font-size: 1em;
}

button.login {
    width: 100%;
    background-color: #001b6b;
    color: white;
    border: none;
    padding: 12px;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.1s ease;
}

button.login:hover {
    background-color: #0042b8;
}

button.login:disabled {
    background-color: #999;
    cursor: not-allowed;
}

.lien-mot-de-passe {
    display: inline-block;
    margin-top: 20px;
    font-size: 0.9em;
    color: #001b6b;
    text-decoration: none;
    position: relative;
    transition: color 0.3s ease;
}

.lien-mot-de-passe::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -3px;
    width: 100%;
    height: 2px;
    background-color: #d62828;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.lien-mot-de-passe:hover {
    color: #d62828;
}

.lien-mot-de-passe:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.message {
    font-size: 0.9em;
    line-height: 1.4;
}

.message.success {
    display: block;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    display: block;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}