body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #2c3e50;
    color: #ecf0f1;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    background-color: #34495e;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
}

label {
    display: block;
    margin-bottom: 15px;
    color: #3498db;
}

input {
    padding: 12px;
    font-size: 16px;
    width: calc(100% - 24px);
    margin-bottom: 25px;
    background-color: #2c3e50;
    color: #ecf0f1;
    border: 1px solid #34495e;
    border-radius: 5px;
    box-sizing: border-box;
}

button {
    padding: 12px 20px;
    font-size: 16px;
    cursor: pointer;
    margin-right: 10px;
    background-color: #3498db;
    color: #ecf0f1;
    border: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #2980b9;
}

#result {
    margin-top: 25px;
    font-weight: bold;
    font-size: 18px;
}