:root {
    --bg-color: #f0f2f5;
    --text-color: #333;
    --container-bg: #ffffff;
    --button-bg: #4A00E0;
    --button-text: #ffffff;
    --result-set-bg: #f8f9fa;
    --number-bg: #4A00E0;
    --number-text: #ffffff;
    --bonus-bg: #FFD700;
    --bonus-text: #333;
}

[data-theme='dark'] {
    --bg-color: #1a1a1a;
    --text-color: #f0f2f5;
    --container-bg: #2d2d2d;
    --button-bg: #8E2DE2;
    --button-text: #ffffff;
    --result-set-bg: #3d3d3d;
    --number-bg: #ffffff;
    --number-text: #4A00E0;
    --bonus-bg: #FFD700;
    --bonus-text: #333;
}

body {
    font-family: sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    background-color: var(--container-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
    text-align: center;
    width: 90%;
    max-width: 500px;
    position: relative;
}

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

#theme-btn {
    background: none;
    border: 1px solid var(--text-color);
    color: var(--text-color);
    padding: 0.3rem 0.6rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.8rem;
}

.game-selection {
    margin-bottom: 2rem;
}

#generate-btn {
    margin-left: 1rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    background-color: var(--button-bg);
    color: var(--button-text);
    cursor: pointer;
    transition: background-color 0.3s;
}

.result-set {
    margin-bottom: 1rem;
    background-color: var(--result-set-bg);
    padding: 1rem;
    border-radius: 5px;
}

.numbers {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.number, .bonus-number {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
}

.number {
    background-color: var(--number-bg);
    color: var(--number-text);
}

.bonus-number {
    background-color: var(--bonus-bg);
    color: var(--bonus-text);
}