/* Shop layout container */
.shop-section {
    margin-top: 30px;
    border-top: 2px dashed #e0e0e0;
    padding-top: 20px;
}

.shop-section h3 {
    font-size: 16px;
    color: #444;
    margin-bottom: 12px;
}

/* Upgrade buttons styling */
.shop-btn {
    width: 100%;
    background-color: #2ecc71;
    color: white;
    border: none;
    padding: 10px;
    margin-bottom: 8px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.shop-btn:hover:not(:disabled) {
    background-color: #27ae60;
    transform: translateY(-1px);
}

/* Grayed out layout when user can't afford it */
.shop-btn:disabled {
    background-color: #cccccc;
    color: #888888;
    cursor: not-allowed;
}

.shop-btn .cost {
    font-size: 11px;
    font-weight: normal;
    opacity: 0.9;
}