* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #356893 0%, #396D97 100%);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

.container-top{
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    margin-bottom: 10px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

.info-container{
    max-width: 700px;
    margin: 30px auto;
    color: white;
    text-align: justify;
    overflow: auto;
}

.header {
    background: linear-gradient(135deg, #538AB1 0%, #148BBC 100%);
    color: white;
    padding: 2rem;
    text-align: center;
}

.header-top{
    background: linear-gradient(135deg, #538AB1 0%, #148BBC 100%);
    color: white;
    text-align: center;
    padding: 10px;
}

.link-space {
    margin: 30px;
}

.form-container {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 10px;
    margin-bottom: 1.5rem;
}

.form-group.flex-1 {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #555;
}

input, select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: #4facfe;
    box-shadow: 0 0 0 3px rgba(79, 172, 254, 0.1);
}

.error-message {
    color: #e74c3c;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    display: none;
}

.btn {
    background: linear-gradient(135deg, #538AB1 0%, #148BBC 100%);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.result {
    margin-top: 2rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    border-radius: 10px;
    text-align: center;
    display: none;
}

.result h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.codice-fiscale {
    font-size: 2rem;
    font-weight: bold;
    font-family: 'Courier New', monospace;
    letter-spacing: 3px;
    color: #27ae60;
    margin: 1rem 0;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
}

.warning {
    background: #fff3cd;
    border: 1px solid #ffeaa7;
    color: #856404;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
    }
    
    .codice-fiscale {
        font-size: 1.5rem;
        letter-spacing: 2px;
    }
}