* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: #ffffff;
    color: #000000;
}

body {
    padding: 40px 20px;
    max-width: 600px;
    margin: 0 auto;
}

h1 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    color: #000000;
}

h2 {
    font-size: 20px;
    font-weight: 600;
    margin-top: 30px;
    margin-bottom: 15px;
    color: #000000;
}

p {
    font-size: 14px;
    margin-bottom: 8px;
    color: #000000;
    font-weight: 500;
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: 1px solid #000000;
    background-color: #ffffff;
    color: #000000;
    font-size: 14px;
    font-family: inherit;
}

input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border: 2px solid #000000;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #000000;
    color: #ffffff;
    border: none;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.2s ease;
    margin-bottom: 20px;
}

button:hover {
    background-color: #333333;
}

button:active {
    background-color: #000000;
}

/* Responsive for mobile */
@media (max-width: 600px) {
    body {
        padding: 20px 15px;
    }

    h1 {
        font-size: 24px;
        margin-bottom: 8px;
    }

    h2 {
        font-size: 18px;
        margin-top: 20px;
        margin-bottom: 12px;
    }

    p {
        font-size: 13px;
        margin-bottom: 6px;
    }

    input[type="text"],
    input[type="number"] {
        padding: 8px;
        margin-bottom: 12px;
        font-size: 16px;
    }

    button {
        padding: 10px;
        font-size: 14px;
        margin-bottom: 15px;
    }
}