body {
    background-color: #000;
    color: #fff;
}

.accordion-button {
    background-color: #1e1e1e;
    color: white;
    border: none;
}

.accordion-button:not(.collapsed) {
    background-color: #ffcc00;
    color: black;
}

.accordion-button::after {
    color: #000; 
}

.accordion-button.collapsed::after {
    color: #ffcc00;
}

.accordion-body {
    background-color: #2b2b2b;
}

ul {
    list-style: none;
    padding: 0;
}

li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: #1e1e1e;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
    border: 1px solid #444;
    cursor: pointer;
}

li:hover {
    background-color: #444;
}

img {
    width: 40px;
    height: 40px;
    margin-left: 10px;
}

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

.header-container img {
    width: 100%; 
    max-width: 1000px; 
    height: auto; 
    object-fit: contain; 
    display: block; 
    margin-left: auto;
    margin-right: auto; 
}

@media (min-width: 768px) {
    .header-container img {
        max-width: 800px; 
    }
}

.completion-percentage {
    font-size: 18px;
    color: #ffcc00;
}

.accordion-header.completed .accordion-button {
    color: red;
    text-decoration: line-through;
    background-color: #333;
}