:root {
    --bg-gradient-start: #6dd5ed;
    --bg-gradient-end: #2193b0;
    --text-color: #333;

    /* Component theme */
    --lotto-container-bg: rgba(255, 255, 255, 0.1);
    --lotto-text-color: #fff;
    --lotto-container-border: rgba(255, 255, 255, 0.18);
}

[data-theme="dark"] {
    --bg-gradient-start: #232526;
    --bg-gradient-end: #414345;
    --text-color: #fff;

    /* Dark mode component theme */
    --lotto-container-bg: rgba(0, 0, 0, 0.2);
    --lotto-text-color: #eee;
    --lotto-container-border: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(to right, var(--bg-gradient-start), var(--bg-gradient-end));
    margin: 0;
    transition: background 0.3s ease;
}