body, html {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #f0f0f0;
}

#gameCanvas {
    display: block;
    background-color: #ffffff;
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1;
}

#ui {
    position: absolute;
    top: 10px;
    left: 10px;
    color: black;
    font-family: Arial, sans-serif;
    font-size: 24px;
}

#objective {
    font-size: 16px;
    margin-top: 5px;
    color: #333;
}

#help-button {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid #333;
    background-color: #f0f0f0;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10;
}

#help-popup {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #f8f8f8;
    padding: 20px;
    border: 2px solid #333;
    border-radius: 10px;
    z-index: 100;
    font-family: Arial, sans-serif;
    min-width: 300px;
    max-width: 500px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

#help-popup.hidden {
    display: none;
}

#help-popup h2 {
    margin-top: 0;
    text-align: center;
}

#help-popup ul {
    list-style-type: none;
    padding: 0;
}

#help-popup ul li {
    margin-bottom: 10px;
}

#help-popup button {
    display: block;
    margin: 20px auto 0;
    padding: 10px 20px;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    background-color: #4CAF50;
    color: white;
}

#admin-panel {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #f8f8f8;
    padding: 20px;
    border: 2px solid #333;
    border-radius: 10px;
    z-index: 100;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    gap: 15px;
    min-width: 250px;
}

#admin-panel.hidden {
    display: none;
}

#admin-panel h3 {
    margin-top: 0;
    margin-bottom: 5px;
    text-align: center;
    color: #333;
}

#admin-panel .form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

#admin-panel .form-group label {
    font-weight: bold;
}

#admin-panel .button-group {
    display: flex;
    justify-content: space-around;
    margin-top: 10px;
}

#admin-panel input {
    padding: 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

#admin-panel button {
    padding: 8px 15px;
    cursor: pointer;
    border: none;
    border-radius: 4px;
    background-color: #4CAF50;
    color: white;
}

#admin-panel #admin-close {
    background-color: #f44336;
}