/* Fullscreen overlay background */
#spo-popup-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
    overflow-y: auto;
    animation: fadeIn 0.3s ease;
}

/* Popup content container */
#spo-popup-content {
    background: #fff;
    padding: 30px 20px;
    max-width: 600px;
    width: 100%;
    border-radius: 12px;
    position: relative;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
    animation: scaleIn 0.25s ease;
}

/* Close button */
#spo-close {
    position: absolute;
    top: 12px;
    right: 14px;
    background: none;
    border: none;
    font-size: 26px;
    line-height: 1;
    color: #333;
    cursor: pointer;
    transition: color 0.2s;
}
#spo-close:hover {
    color: #000;
}

/* Optional animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes scaleIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}