.preview-btn {
    background: #1a73e8 !important;
    color: #fff !important;
    border: none;
    border-radius: 6px;
    padding: 12px 24px;
    font-weight: 500;
    margin-bottom: 12px;
    display: block;
    width: 100%;
    text-align: center;
    transition: background 0.25s ease;
}
.preview-btn:hover {
    background: #0c56c2 !important;
}

/* Popup overlay */
.efp-popup-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

/* Popup box */
.efp-popup {
    background: #fff;
    padding: 0;
    border-radius: 12px;
    max-width: 520px;
    width: 90%;
    box-shadow: 0 0 25px rgba(0,0,0,0.25);
    animation: popupFade 0.3s ease;
    overflow: hidden;
}

.efp-header {
    background: #1a73e8;
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    text-align: center;
    padding: 15px;
}

.efp-content {
    padding: 20px 25px;
    max-height: 400px;
    overflow-y: auto;
}

.efp-row {
    padding: 8px 0;
    border-bottom: 1px solid #f5f5f5;
    font-size: 15px;
    color: #333;
}

.efp-row strong {
    display: inline-block;
    min-width: 120px;
    color: #000;
}

.efp-popup button.efp-close {
    margin: 15px auto 20px;
    display: block;
    background: #1a73e8;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.25s ease;
}

.efp-popup button.efp-close:hover {
    background: #0c56c2;
}

@keyframes popupFade {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}