body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f7f9fa;
    color: #333;
}

header {
    background: salmon;
    color: white;
    padding: 25px;
    text-align: center;
}

form {
    text-align: center;
    margin: 30px 0;
}

input {
    padding: 12px;
    width: 250px;
    border-radius: 8px;
    border: 1px solid #bbb;
}

button {
    padding: 12px 18px;
    background: #4a90e2;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

button:hover {
    background: #357ac8;
}

#errorMessage {
    text-align: center;
    color: red;
    font-weight: bold;
}

#resultsSection {
    width: 80%;
    max-width: 600px;
    margin: 20px auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background: #ededed;
}