:root {
    --background-color: #f0f0f0;
    --container-background: #ffffff;
    --primary-color: #4a90e2;
    --primary-color-dark: #357ABD;
    --text-color: #333333;
    --white: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Arial', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}

.container {
    background-color: var(--container-background);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow-color);
    text-align: center;
    width: 90%;
    max-width: 500px;
}

h1 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

#generate {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    margin-bottom: 1.5rem;
}

#generate:hover {
    background-color: var(--primary-color-dark);
}

.numbers-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

lotto-ball {
    --ball-size: 50px;
    width: var(--ball-size);
    height: var(--ball-size);
}