body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #121214;
    color: #e1e1e6;
    margin: 0;
    padding: 20px;
}
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 2px solid #29292e;
    padding-bottom: 20px;
}
h1 { color: #9146ff; margin: 0; }
button {
    background-color: #9146ff;
    color: white;
    border: none;
    padding: 10px 20px;
    font-weight: bold;
    border-radius: 5px;
    cursor: pointer;
}
button:hover { background-color: #772ce8; }
button:disabled { background-color: #4c4c52; cursor: not-allowed; }
.hidden { display: none !important; }
.shop-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 40px;
}
.shop-item {
    background-color: #202024;
    border: 1px solid #29292e;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
}
.item-image { font-size: 4rem; margin-bottom: 10px; }
.price { color: #04d361; font-weight: bold; }