body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    text-align: center;
    background: linear-gradient(135deg, #e0f7fa, #b2ebf2);
    color: #333;
}

header {
    background: #00796b;
    color: white;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
}

header p {
    margin: 5px 0 0;
    font-size: 1.2rem;
}

#game-container {
    max-width: 900px;
    margin: 20px auto;
}

#menu button, #instructions-area button, #game-area button, #result-area button {
    padding: 10px 20px;
    font-size: 1.2rem;
    margin: 10px;
    background: #4db6ac;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

#menu button:hover, #instructions-area button:hover, #game-area button:hover, #result-area button:hover {
    background: #00796b;
}

#instructions-area, #game-area, #result-area {
    display: none;
    margin-top: 20px;
    padding: 20px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

#elements-container, #properties-container {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.element, .property {
    padding: 10px 15px;
    background-color: #f0f4c3;
    border: 2px solid #cddc39;
    border-radius: 5px;
    cursor: grab;
    text-align: center;
    width: 150px;
}