body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.card-generator {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    width: 350px;
    text-align: center;
}

.input-group {
    text-align: left;
    margin-bottom: 15px;
}

label {
    display: block;
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 10px;
    border: 2px solid #eee;
    border-radius: 8px;
    font-size: 1rem;
    box-sizing: border-box; 
    transition: 0.3s;
}

input:focus {
    border-color: #6c5ce7;
    outline: none;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #6c5ce7;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    margin-top: 10px;
    transition: 0.2s;
}

button:hover {
    background-color: #5649c0;
    transform: translateY(-2px);
}

.hidden {
    display: none;
}

#box-risultato {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    animation: fadeIn 0.5s;
}

.username-box {
    background: #f0f3f4;
    color: #2d3436;
    font-family: 'Courier New', monospace;
    font-size: 1.4rem;
    font-weight: bold;
    padding: 10px;
    border-radius: 8px;
    letter-spacing: 1px;
    border: 1px dashed #b2bec3;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}