body {
    font-family: "Rawline", helvetica, arial, sans-serif;
    background-color: #f8f8f8;
    margin: 0;
    color: #333;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background: #004691;
    color: white;
    padding: 10px 0;
}

.gov-logo {
    font-size: 1.2rem;
    letter-spacing: -1px;
}

.card {
    background: white;
    padding: 40px;
    margin-top: 50px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    text-align: center;
}

h1 {
    color: #004691;
    font-size: 2rem;
    margin-bottom: 10px;
}

.description {
    color: #666;
    margin-bottom: 30px;
}

.result-area {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
}

#cpfDisplay {
    font-size: 1.5rem;
    padding: 10px;
    border: 2px solid #ccc;
    border-radius: 4px;
    text-align: center;
    width: 250px;
    background: #eee;
}

button {
    cursor: pointer;
    font-weight: bold;
    border: none;
    transition: 0.3s;
}

.btn-primary {
    background-color: #1351b4;
    color: white;
    padding: 15px 30px;
    border-radius: 100px;
    font-size: 1rem;
}

.btn-primary:hover {
    background-color: #0c326d;
}

#copyBtn {
    background: #008052;
    color: white;
    padding: 0 20px;
    border-radius: 4px;
}

.alert {
    margin-top: 30px;
    font-size: 0.8rem;
    color: #856404;
    background-color: #fff3cd;
    padding: 10px;
    border-radius: 4px;
}