body {
    margin: 0;
    padding: 10px;
    background: #18181b;
    color: #ffffff;
    font-family: Arial, sans-serif;
}

.panel {
    width: 100%;
    box-sizing: border-box;
}

h1 {
    margin-top: 0;
    font-size: 22px;
}

#user {
    margin-bottom: 5px;
    color: #b3b3b3;
}

#credits {
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: bold;
}

.reward {
    background: #26262c;
    border-radius: 6px;
    padding: 10px;
    margin-bottom: 8px;
}

.reward-name {
    font-weight: bold;
    font-size: 16px;
}

.reward-cost {
    color: #b3b3b3;
    margin: 4px 0 8px;
}

.reward button {
    width: 100%;
    padding: 7px;
    border: 0;
    border-radius: 4px;
    cursor: pointer;
}