@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap');

body {
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    padding: 0 20px;
}

.container {
    text-align: center;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    transition: transform 0.3s ease;
}

.container:hover {
    transform: translateY(-10px);
}

h1 {
    font-size: 2em;
    margin-bottom: 20px;
    color: #333;
}

input {
    padding: 12px;
    margin: 10px 0;
    width: 100%;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

input:focus {
    border-color: #007BFF;
    outline: none;
}

button {
    padding: 12px 20px;
    background-color: #007BFF;
    color: white;
    border: none;
    border-radius: 4px;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

button:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

#result {
    margin-top: 20px;
    font-size: 1.2em;
    color: #333;
    opacity: 0;
    transition: opacity 0.5s ease;
}

#result.show {
    opacity: 1;
}

@media (min-width: 768px) {
    .container {
        width: 50%;
    }
}