.md-nav__source{display: none;}
.md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link {
    font-weight: bold;
}

/* PDF Viewer Styles */
.pdf-viewer-container {
    border: 1px solid #ccc;
    border-radius: 6px;
    overflow: hidden;
    font-family: sans-serif;
    margin-bottom: 20px;
    background-color: #f5f5f5;
}

.pdf-viewer-header {
    background-color: #333;
    color: white;
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pdf-viewer-header .document-label {
    font-weight: bold;
    font-size: 0.9em;
}

.pdf-viewer-header .download-btn {
    text-decoration: none;
    background-color: #e74c3c;
    color: white !important;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85em;
    transition: background 0.2s;
}

.pdf-viewer-header .download-btn:hover {
    background-color: #c0392b;
}

.pdf-viewer-content {
    position: relative;
    width: 100%;
    min-height: 200px;
    background-color: #525659;
}

.pdf-viewer-content canvas {
    display: block;
    width: 100%;
    height: auto;
}

.pdf-viewer-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
}

.pdf-viewer-controls {
    background-color: #ddd;
    padding: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

.pdf-viewer-controls button {
    cursor: pointer;
    padding: 5px 15px;
    border: 1px solid #999;
    background: #eee;
    border-radius: 3px;
}

.pdf-viewer-controls button:hover {
    background: #fff;
}

.pdf-viewer-controls .page-info {
    font-size: 0.9em;
}

/* HTML Viewer Styles */
.html-viewer-container {
    border: 1px solid #ccc;
    border-radius: 6px;
    overflow: hidden;
    font-family: sans-serif;
    margin-bottom: 20px;
    background-color: #f5f5f5;
}

.html-viewer-header {
    background-color: #333;
    color: white;
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.html-viewer-header .document-label {
    font-weight: bold;
    font-size: 0.9em;
}

.html-viewer-header .open-btn {
    text-decoration: none;
    background-color: #3498db;
    color: white !important;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85em;
    transition: background 0.2s;
}

.html-viewer-header .open-btn:hover {
    background-color: #2980b9;
}

.html-viewer-content {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
}

.html-viewer-content iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.html-viewer-controls {
    background-color: #ddd;
    padding: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

.html-viewer-controls button {
    cursor: pointer;
    padding: 5px 15px;
    border: 1px solid #999;
    background: #eee;
    border-radius: 3px;
}

.html-viewer-controls button:hover {
    background: #fff;
}