body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #74ebd5, #ACB6E5);
    text-align: center;
    padding: 20px;
}

.page {
    display: none;
    max-width: 400px;
    margin: auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
}

.page.active {
    display: block;
}

input {
    display: block;
    width: 90%;
    padding: 10px;
    margin: 10px auto;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    padding: 10px 20px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background: #45a049;
}

#timer {
    font-weight: bold;
    margin-bottom: 15px;
}