.ope-embed-container {
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    margin: 20px 0;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.ope-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
}

.ope-title {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #333;
}

.ope-download-btn {
    background: #007cba;
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
    transition: background 0.3s ease;
}

.ope-download-btn:hover {
    background: #005a87;
    color: white;
}

.ope-viewer {
    border-radius: 0 0 8px 8px;
    overflow: hidden;
}

.ope-viewer iframe {
    border: none;
    display: block;
}

.ope-fallback {
    padding: 40px 20px;
    text-align: center;
    background: #f8f9fa;
}

.ope-fallback .button {
    background: #007cba;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 4px;
    display: inline-block;
    margin-top: 10px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .ope-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .ope-title {
        font-size: 14px;
    }
    
    .ope-viewer {
        height: 400px !important;
    }
}