/* ================= POPUP WRAPPER ================= */
#extra-popup {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

/* ================= POPUP BOX ================= */
#extra-popup .box {
    width: 100%;
    max-width: 420px;
    max-height: 85vh;              /* popup height control */
    background: #fff;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    overflow: hidden;              /* IMPORTANT */
}

/* ================= HEADER (FIXED) ================= */
#extra-popup .header {
    padding: 16px 20px;
    border-bottom: 1px solid #eee;
    flex-shrink: 0;
}

/* ================= PRODUCT LIST (SCROLL AREA) ================= */
#extra-popup .extra-products {
    flex: 1;                       /* TAKE AVAILABLE SPACE */
    overflow-y: auto;              /* ONLY THIS SCROLLS */
    padding: 14px 20px;
}

/* individual product spacing (optional, safe) */
#extra-popup .extra-products .product-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

/* ================= FOOTER BUTTONS (FIXED) ================= */
#extra-popup .buttons {
    padding: 14px 20px;
    border-top: 1px solid #eee;
    background: #fff;
    flex-shrink: 0;                /* STAYS VISIBLE */
    display: flex;
    gap: 10px;
}

/* ================= SCROLLBAR (CLEAN & LIGHT) ================= */
#extra-popup .extra-products::-webkit-scrollbar {
    width: 6px;
}
#extra-popup .extra-products::-webkit-scrollbar-thumb {
    background: #cfcfcf;
    border-radius: 8px;
}
#extra-popup .extra-products::-webkit-scrollbar-track {
    background: transparent;
}

/* ================= MOBILE OPTIMIZATION ================= */
@media (max-width: 480px) {
    #extra-popup .box {
        max-height: 90vh;
        border-radius: 10px;
    }

    #extra-popup .extra-products {
        padding: 12px 16px;
    }

    #extra-popup .buttons {
        padding: 12px 16px;
    }
}