* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
    color: #333;
}

#game-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

h1 {
    color: #2c3e50;
    font-size: 2.5em;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#main-menu {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 400px;
    padding: 20px;
    background-color: rgba(44, 62, 80, 0.1);
    border-radius: 10px;
}

#main-menu h2 {
    margin-bottom: 20px;
    color: #2c3e50;
}

#main-menu button {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    font-size: 1.2em;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#main-menu button:hover {
    background-color: #2980b9;
}

#game-area {
    width: 100%;
    height: 600px;
    background-color: #fff;
    border: 2px solid #2c3e50;
    border-radius: 10px;
    margin-bottom: 20px;
}

#ui-overlay {
    width: 100%;
    padding: 20px;
    background-color: rgba(44, 62, 80, 0.1);
    border-radius: 10px;
}

footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.8em;
    color: #7f8c8d;
}