#ub-post-popup {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 340px;
    background: #ffffff !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 12px !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08) !important;
    padding: 24px !important;
    z-index: 999999 !important;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif !important;
    box-sizing: border-box !important;
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.4s ease;
    opacity: 0;
}

#ub-post-popup.ub-popup-hidden {
    transform: translateY(150%) !important;
    opacity: 0 !important;
}

#ub-post-popup.ub-popup-visible {
    transform: translateY(0) !important;
    opacity: 1 !important;
}

#ub-popup-close {
    position: absolute !important;
    top: 12px !important;
    right: 16px !important;
    background: none !important;
    border: none !important;
    font-size: 22px !important;
    cursor: pointer !important;
    color: #a0aec0 !important;
    line-height: 1 !important;
    padding: 0 !important;
    transition: color 0.2s ease;
}

#ub-popup-close:hover {
    color: #4a5568 !important;
}

/* Header Text Rule Forcing */
.ub-popup-header h3 {
    margin: 0 0 16px 0 !important;
    color: #1a202c !important;
    font-size: var(--ub-header-fs) !important;
    font-weight: var(--ub-header-fw) !important;
    line-height: var(--ub-header-lh) !important;
    letter-spacing: var(--ub-header-ls) !important;
}

.ub-popup-body {
    display: flex !important;
    flex-direction: column !important;
    gap: 14px !important;
}

.ub-popup-image-wrapper img {
    width: 100% !important;
    height: 160px !important;
    object-fit: cover !important;
    border-radius: 8px !important;
}

/* Post Title Rule Forcing */
.ub-popup-text-content h4 {
    margin: 0 0 6px 0 !important;
    color: #2d3748 !important;
    font-size: var(--ub-title-fs) !important;
    font-weight: var(--ub-title-fw) !important;
    line-height: var(--ub-title-lh) !important;
    letter-spacing: var(--ub-title-ls) !important;
}

/* Post Body Rule Forcing */
.ub-popup-text-content p {
    margin: 0 0 16px 0 !important;
    color: #718096 !important;
    font-size: var(--ub-body-fs) !important;
    font-weight: var(--ub-body-fw) !important;
    line-height: var(--ub-body-lh) !important;
    letter-spacing: var(--ub-body-ls) !important;
}

/* Button Structural Rule Forcing */
.ub-popup-btn {
    display: inline-block !important;
    text-decoration: none !important;
    padding: 10px 22px !important;
    border-radius: 20px !important;
    text-transform: uppercase !important;
    text-align: center !important;
    
    background: var(--ub-btn-bg) !important;
    color: var(--ub-btn-txt) !important;
    font-size: var(--ub-btn-fs) !important;
    font-weight: var(--ub-btn-fw) !important;
    line-height: var(--ub-btn-lh) !important;
    letter-spacing: var(--ub-btn-ls) !important;
    
    transition: background 0.2s ease !important;
}

.ub-popup-btn:hover {
    background: var(--ub-btn-bg-hover) !important;
}

@media (max-width: 600px) {
    #ub-post-popup {
        bottom: 0 !important;
        right: 0 !important;
        left: 0 !important;
        width: 100% !important;
        border-radius: 16px 16px 0 0 !important;
        padding: 20px !important;
        box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.1) !important;
    }
    
    #ub-post-popup.ub-popup-hidden {
        transform: translateY(100%) !important;
    }

    .ub-popup-header h3 {
        text-align: center !important;
    }

    .ub-popup-body {
        flex-direction: row !important;
        align-items: flex-start !important;
        gap: 12px !important;
    }

    .ub-popup-image-wrapper {
        flex: 0 0 100px !important;
    }

    .ub-popup-image-wrapper img {
        height: 100px !important;
        width: 100px !important;
    }

    .ub-popup-text-content {
        flex: 1 !important;
    }
    
    .ub-popup-text-content p {
        margin-bottom: 12px !important;
    }

    .ub-popup-btn {
        padding: 8px 16px !important;
    }
}