:root {
    --primary-color: #f0f0f0;
    --secondary-color: #333;
    --accent-color: #ff7f50;
    --background-color: #fdfdfd;
    --container-bg: #ffffff;
    --text-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --primary-color: #222;
    --secondary-color: #eee;
    --accent-color: #ff7f50;
    --background-color: #121212;
    --container-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Arial', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='4' height='4' viewBox='0 0 4 4'%3E%3Cpath fill='%239C92AC' fill-opacity='0.1' d='M1 3h1v1H1V3zm2-2h1v1H3V1z'%3E%3C/path%3E%3C/svg%3E");
}

.container {
    position: relative;
    text-align: center;
    padding: 2.5rem;
    background-color: var(--container-bg);
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: background-color 0.3s, box-shadow 0.3s;
    min-width: 320px;
}

.theme-switch-wrapper {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

#theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.2s;
    line-height: 1;
}

#theme-toggle:hover {
    background-color: var(--primary-color);
}

h1 {
    color: var(--text-color);
    margin-bottom: 2rem;
}

#generate-btn {
    background: linear-gradient(45deg, var(--accent-color), #f9d423);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    font-weight: bold;
}

#generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

#numbers-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

lotto-ball {
    --ball-color: #eee;
}