:root {
    --bg-color: #f0f2f5;
    --container-bg-color: #fff;
    --text-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --button-bg-color: #007bff;
    --button-hover-bg-color: #0056b3;
}

.dark-mode {
    --bg-color: #2c2c2c;
    --container-bg-color: #3a3a3a;
    --text-color: #f0f2f5;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --button-bg-color: #6a0dad; /* Darker purple for dark mode buttons */
    --button-hover-bg-color: #4a008b; /* Even darker purple on hover */
}

body {
    position: relative; /* For absolute positioning of theme-toggle-btn and mario-game-container */
    background-color: var(--bg-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
    color: var(--text-color);
}

.container {
    text-align: center;
    background-color: var(--container-bg-color);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 12px var(--shadow-color);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

h1 {
    margin-top: 0;
    color: var(--text-color);
    transition: color 0.3s ease;
}

#theme-toggle-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: var(--button-bg-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    z-index: 1000;
}

#theme-toggle-btn:hover {
    background-color: var(--button-hover-bg-color);
}

#mario-game-btn {
    position: absolute;
    top: 20px;
    right: 150px; /* Adjust based on theme-toggle-btn width */
    background-color: var(--button-bg-color);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    z-index: 1000;
}

#mario-game-btn:hover {
    background-color: var(--button-hover-bg-color);
}

.lotto-numbers-container {
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #4CAF50;
    color: white;
    font-size: 24px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

#generate-btn {
    background-color: var(--button-bg-color);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#generate-btn:hover {
    background-color: var(--button-hover-bg-color);
}

#mario-game-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

#mario-game-iframe {
    width: 90%;
    height: 90%;
    border: none;
}

#close-mario-game-btn {
    margin-top: 10px;
    padding: 10px 20px;
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
}

#close-mario-game-btn:hover {
    background-color: #c82333;
}

.hidden {
    display: none !important;
}