:root {
    --background-color: #f0f0f0;
    --container-background-color: #fff;
    --text-color: #333;
    --number-background-color: #eee;
    --button-background-color: #4CAF50;
    --button-hover-background-color: #45a049;
    --box-shadow-color: rgba(0, 0, 0, 0.1);
    --box-shadow-hover-color: rgba(76, 175, 80, 0.7);
}

body {
    background-color: var(--background-color);
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    transition: background-color 0.3s ease;
}

body.dark-mode {
    --background-color: #2c2c2c;
    --container-background-color: #3d3d3d;
    --text-color: #f0f0f0;
    --number-background-color: #5a5a5a;
    --button-background-color: #5a5a5a;
    --button-hover-background-color: #6b6b6b;
    --box-shadow-color: rgba(255, 255, 255, 0.1);
    --box-shadow-hover-color: rgba(255, 255, 255, 0.3);
}

.container {
    text-align: center;
    background-color: var(--container-background-color);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--box-shadow-color), 0 6px 6px var(--box-shadow-color);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

h1 {
    color: var(--text-color);
    margin-bottom: 30px;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

.number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--number-background-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 10px;
    box-shadow: 0 4px 8px var(--box-shadow-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

button {
    background-color: var(--button-background-color);
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-size: 18px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    margin: 0 5px;
}

button:hover {
    background-color: var(--button-hover-background-color);
    box-shadow: 0 0 20px var(--box-shadow-hover-color);
}

.button-container {
    display: flex;
    justify-content: center;
}