:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --border-color: #ccc;
    --item-bg: #fff;
    --button-bg: #333;
    --button-text: #fff;
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --border-color: #444;
    --item-bg: #2a2a2a;
    --button-bg: #f0f0f0;
    --button-text: #1a1a1a;
}

body {
    font-family: sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

header, main, footer {
    width: 100%;
    max-width: 800px;
    text-align: center;
    padding: 20px;
}

#game-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}

.food-item {
    background-color: var(--item-bg);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s, background-color 0.3s;
}

.food-item:hover {
    transform: scale(1.05);
    border-color: var(--text-color);
}

.food-item img {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
}

#next-round-btn {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    border: none;
    border-radius: 5px;
    background-color: var(--button-bg);
    color: var(--button-text);
    transition: background-color 0.3s, color 0.3s;
}

#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 10px 15px;
    border-radius: 50px;
    border: 1px solid var(--border-color);
    background-color: var(--item-bg);
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s;
}