.pdf-viewer-wrap {
    margin: 0 0 40px;
}

.pdf-viewer-toolbar-top {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 12px;
}

.pdf-viewer-link {
    display: inline-block;
    padding: 8px 14px;
    border: 1px solid #d9d9d9;
    border-radius: 6px;
    background: #fff;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    line-height: 1.2;
}

.pdf-viewer-link:hover {
    border-color: #999;
    background: #f7f7f7;
}

.pdf-viewer-app {
    border: 1px solid #ddd;
    border-radius: 6px;
    overflow: hidden;
    background: #525659;
}

.pdf-viewer-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: #323639;
    color: #fff;
}

.pdf-viewer-controls button {
    min-width: 36px;
    height: 32px;
    border: 0;
    border-radius: 4px;
    background: #474a4f;
    color: #fff;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
}

.pdf-viewer-controls button:hover:not(:disabled) {
    background: #5a5f66;
}

.pdf-viewer-controls button:disabled {
    opacity: 0.45;
    cursor: default;
}

.pdf-viewer-page-label {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
}

.pdf-viewer-page-label input {
    width: 52px;
    height: 32px;
    padding: 0 6px;
    border: 1px solid #666;
    border-radius: 4px;
    background: #1f2124;
    color: #fff;
    text-align: center;
}

.pdf-viewer-separator {
    width: 1px;
    height: 24px;
    background: #666;
    margin: 0 4px;
}

.pdf-viewer-status {
    min-height: 20px;
    padding: 8px 12px 0;
    color: #fff;
    font-size: 14px;
}

.pdf-viewer-canvas-wrap {
    max-height: 80vh;
    min-height: 480px;
    overflow: auto;
    padding: 16px;
}

.pdf-viewer-canvas-host {
    display: flex;
    justify-content: center;
}

.pdf-viewer-page-canvas {
    display: block;
    max-width: 100%;
    height: auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
    background: #fff;
}

@media (max-width: 768px) {
    .pdf-viewer-canvas-wrap {
        min-height: 60vh;
    }
}