/* PrutViewer 0.1.0 optional theme. The styling contract is data-viewer-* only. */

[data-viewer-role="root"] {
    --viewer-accent: #6c757d;
    --viewer-background: #ebebeb;
    --viewer-page-background: #fff;
    --viewer-max-width: 900px;
    --viewer-office-max-width: 1400px;
    --viewer-office-height: max(85vh, 1000px);
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 12px 0;
    position: relative;
    background: var(--viewer-background);
}

[data-viewer-role="status"] {
    display: flex;
    min-height: 220px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: #6c757d;
    font-size: .875rem;
}

[data-viewer-role="status"][data-viewer-state="error"] {
    color: #dc3545;
}

[data-viewer-role="slot"] {
    display: flex;
    max-width: var(--viewer-max-width);
    margin: 0 auto 24px;
    padding-left: 4px;
    align-items: flex-start;
}

[data-viewer-role="slot"][data-viewer-renderer="office"] {
    max-width: var(--viewer-office-max-width);
}

[data-viewer-role="slot"] > [data-viewer-role="document"] {
    min-width: 0;
    flex: 1;
}

[data-viewer-role="placeholder"] {
    display: flex;
    aspect-ratio: 210 / 297;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 8px;
    background: var(--viewer-page-background);
    box-shadow: 0 1px 4px rgba(0, 0, 0, .07);
    color: #bbb;
}

[data-viewer-role="placeholder-title"] {
    color: #999;
    font-size: .85rem;
    font-weight: 600;
}

[data-viewer-role="placeholder-hint"] {
    color: #bbb;
    font-size: .75rem;
}

[data-viewer-role="document"] {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    background: var(--viewer-page-background);
    box-shadow: 0 1px 6px rgba(0, 0, 0, .09);
}

[data-viewer-role="document-header"] {
    position: absolute;
    z-index: 2;
    top: 0;
    right: 0;
    left: 0;
    display: flex;
    padding: 6px 14px;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid rgba(0, 0, 0, .06);
    background: rgba(255, 255, 255, .88);
    backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity .18s ease;
}

[data-viewer-role="document"]:hover > [data-viewer-role="document-header"],
[data-viewer-role="document"]:focus-within > [data-viewer-role="document-header"] {
    opacity: 1;
}

[data-viewer-role="document-index"] {
    display: inline-flex;
    min-width: 20px;
    padding: 1px 6px;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    background: var(--viewer-accent);
    color: #fff;
    font-size: .65rem;
    font-weight: 700;
    line-height: 1.4;
}

[data-viewer-role="document-title"] {
    overflow: hidden;
    min-width: 0;
    max-width: 55%;
    flex-shrink: 1;
    color: #1a1a2e;
    font-size: .78rem;
    font-weight: 400;
    text-overflow: ellipsis;
    white-space: nowrap;
}

[data-viewer-role="document-title"][data-viewer-unread="true"] {
    font-weight: 600;
}

[data-viewer-role="metadata-separator"],
[data-viewer-role="metadata-item"] {
    flex-shrink: 0;
    font-size: .78rem;
}

[data-viewer-role="metadata-separator"] {
    color: #ccc;
}

[data-viewer-role="metadata-item"] {
    color: #1a1a2e;
    white-space: nowrap;
}

[data-viewer-role="pdf-pages"] {
    --page-margin: 0;
    --page-border: none;
    display: flex;
    flex-direction: column;
    gap: 0;
    background: #d8d8d8;
}

[data-viewer-role="pdf-page"] {
    --scale-factor: 1;
    position: relative;
    overflow: hidden;
    aspect-ratio: 210 / 297;
    background: var(--viewer-page-background);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .15);
    line-height: 0;
}

/* PDFPageView owns these internal nodes; they are not part of PrutViewer's DOM API. */
[data-viewer-role="pdf-page"] > .page {
    direction: ltr;
    margin: 0;
    position: relative;
    overflow: visible;
    border: 0;
    background-clip: content-box;
    background-color: var(--viewer-page-background);
}

[data-viewer-role="pdf-page"] .canvasWrapper {
    overflow: hidden;
    width: 100%;
    height: 100%;
    z-index: 1;
}

[data-viewer-role="pdf-page"] canvas {
    display: block;
    margin: 0;
}

[data-viewer-role="pdf-page"] canvas[hidden] {
    display: none;
}

[data-viewer-role="pdf-page"] canvas[zooming] {
    width: 100%;
    height: 100%;
}

[data-viewer-role="pdf-page"][data-viewer-state="placeholder"] {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: viewer-shimmer 1.4s ease-in-out infinite;
}

@keyframes viewer-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

[data-viewer-role="image"] {
    display: block;
    width: 100%;
    height: auto;
}

[data-viewer-role="media-container"] {
    display: flex;
    padding: 28px 16px;
    justify-content: center;
    background: #000;
}

[data-viewer-role="media-player"] {
    width: 100%;
    max-width: 720px;
    outline: none;
}

[data-viewer-role="text-content"] {
    overflow-y: auto;
    max-height: 600px;
    margin: 0;
    padding: 16px;
    background: var(--viewer-page-background);
    color: #222;
    font-size: .82rem;
    white-space: pre-wrap;
    word-break: break-word;
}

[data-viewer-role="document"][data-viewer-renderer="office"] {
    height: var(--viewer-office-height);
    overflow: visible;
}

[data-viewer-role="office-frame"] {
    display: flex;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
    background: var(--viewer-page-background);
    color: #999;
    font-size: .85rem;
}

[data-viewer-role="fallback"] {
    display: flex;
    padding: 40px 16px;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}

[data-viewer-role="fallback-hint"] {
    color: #888;
    font-size: .85rem;
}

[data-viewer-role="download"] {
    display: inline-flex;
    padding: 6px 16px;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--viewer-accent);
    border-radius: 4px;
    color: var(--viewer-accent);
    font-size: .85rem;
    text-decoration: none;
    transition: background .15s, color .15s;
}

[data-viewer-role="download"]:hover {
    background: var(--viewer-accent);
    color: #fff;
}

[data-viewer-role="renderer-error"] {
    display: flex;
    padding: 24px;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: #dc3545;
    font-size: .85rem;
}

[data-viewer-role="document"][data-viewer-state="error"] [data-viewer-role="pdf-pages"] {
    background: #fff3f3;
}

@media (prefers-reduced-motion: reduce) {
    [data-viewer-role="pdf-page"][data-viewer-state="placeholder"] {
        animation: none;
    }

    [data-viewer-role="document-header"],
    [data-viewer-role="download"] {
        transition: none;
    }
}