:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --container-bg: #fff;
    --lotto-number-bg: #eee;
    --button-bg: #007bff;
    --button-text: #fff;
}

body.dark-mode {
    --bg-color: #333;
    --text-color: #f0f0f0;
    --container-bg: #444;
    --lotto-number-bg: #555;
    --button-bg: #666;
    --button-text: #f0f0f0;
}

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

.container {
    text-align: center;
    background-color: var(--container-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.lotto-display {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.lotto-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--lotto-number-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: var(--text-color);
}

#generate-btn, #theme-toggle, .nav-link {
    padding: 10px 20px;
    font-size: 18px;
    cursor: pointer;
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 5px;
    margin: 5px;
    text-decoration: none; /* Remove underline for links */
    display: inline-block; /* Allow padding and margin to apply correctly */
}

.history {
    margin-top: 20px;
}

#history-list {
    list-style: none;
    padding: 0;
}

#history-list li {
    background-color: var(--lotto-number-bg);
    margin: 5px 0;
    padding: 8px;
    border-radius: 4px;
}