.sell_course strong { font-size: 17px !important; }
        
        .wcbvp-total-right button:disabled,
        .wcbvp-total-right button.disabled,
        .wcbvp-total-right button.wc-variation-selection-needed {
            pointer-events: none !important; 
        }
        
        .wcbvp-total-right {
            cursor: pointer;
            position: relative;
        }
        
        .var-error-msg {
            position: absolute;
            bottom: calc(100% + 15px);
            right: 50%;
            transform: translateX(50%);
            background-color: #e2401c;
            color: #fff;
            padding: 10px 15px 10px 35px;
            border-radius: 4px;
            font-size: 13px;
            font-weight: bold;
            box-shadow: 0 4px 10px rgba(226, 64, 28, 0.3);
            z-index: 9999;
            white-space: nowrap;
            display: none;
            direction: rtl;
        }
        
        .var-error-msg::after {
            content: "";
            position: absolute;
            top: 100%;
            right: 50%;
            transform: translateX(50%);
            border-width: 6px;
            border-style: solid;
            border-color: #e2401c transparent transparent transparent;
        }
        
        .var-error-close {
            position: absolute;
            top: 50%;
            left: 8px;
            transform: translateY(-50%);
            cursor: pointer;
            font-weight: bold;
            font-size: 18px;
            line-height: 1;
            color: rgba(255,255,255,0.7);
        }
        
        .var-error-close:hover {
            color: #fff;
        }