/* Reset basique */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Fond dégradé */
body {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

/* Conteneur du formulaire */
.form-container {
    background: #fff;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0px 8px 20px rgba(0,0,0,0.2);
    width: 350px;
    text-align: center;
}

/* Titre */
.form-container h2 {
    margin-bottom: 20px;
    color: #333;
}

/* Champs input */
.form-container input {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border: 1px solid #ddd;
    border-radius: 8px;
    outline: none;
    transition: all 0.3s ease;
}

/* Effet focus */
.form-container input:focus {
    border-color: #4facfe;
    box-shadow: 0 0 8px rgba(79, 172, 254, 0.4);
}

/* Bouton */
.form-container button {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

/* Effet hover bouton */
.form-container button:hover {
    transform: translateY(-2px);
    box-shadow: 0px 5px 15px rgba(0,0,0,0.2);
}

/* Message d'erreur */
.error {
    background: #ff4d4d;
    color: white;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 14px;
}