feat(preview): add file preview page with metadata and styling
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Implement a rich file preview interface to allow users to view file contents directly in the browser. Changes include: - Exposing raw file size (`SizeBytes`) in the download handler's file view. - Adding comprehensive CSS styling for the preview layout and cards. - Integrating Prism.js for syntax highlighting of code files. - Updating Content Security Policy (CSP) headers to permit inline styles and frame sources required by the preview components. - Adding unit tests to ensure preview metadata attributes are correctly rendered on the download page.
This commit is contained in:
@@ -15,6 +15,374 @@
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text-align: center;
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}
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.preview-view {
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width: min(72rem, calc(100% - 2rem));
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min-height: auto;
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padding-block: clamp(2rem, 7vh, 4.5rem);
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display: block;
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}
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.preview-card {
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width: 100%;
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margin: 0 auto;
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text-align: left;
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}
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.preview-card .card-content {
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padding: clamp(1rem, 2.4vw, 1.5rem);
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}
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.preview-header {
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display: flex;
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align-items: flex-start;
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justify-content: space-between;
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gap: 1rem;
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margin-bottom: 1rem;
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}
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.preview-title-group {
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min-width: 0;
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}
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.preview-header .file-name {
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margin: 0;
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font-size: clamp(1.35rem, 2.4vw, 2rem);
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line-height: 1.12;
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}
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.preview-header .download-subtitle {
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margin: 0.45rem 0 0;
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}
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.preview-window {
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overflow: hidden;
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border: 1px solid color-mix(in srgb, var(--border) 78%, var(--primary));
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border-radius: var(--radius);
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background:
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linear-gradient(180deg, color-mix(in srgb, var(--card) 94%, transparent), color-mix(in srgb, var(--background) 92%, transparent));
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box-shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
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}
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.preview-window-titlebar {
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min-height: 3rem;
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display: flex;
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align-items: center;
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justify-content: space-between;
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gap: 1rem;
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padding: 0.72rem 0.9rem;
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border-bottom: 1px solid var(--border);
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background: color-mix(in srgb, var(--muted) 62%, transparent);
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}
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.preview-window-titlebar > div:first-child {
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min-width: 0;
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display: flex;
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align-items: baseline;
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gap: 0.6rem;
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}
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.preview-window-titlebar strong {
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font-size: 0.92rem;
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}
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.preview-window-titlebar span {
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overflow: hidden;
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color: var(--muted-foreground);
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font-size: 0.78rem;
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text-overflow: ellipsis;
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white-space: nowrap;
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}
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.preview-window-tools {
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display: inline-flex;
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align-items: center;
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justify-content: flex-end;
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gap: 0.35rem;
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}
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.preview-fullscreen-button {
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appearance: none;
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min-height: 2rem;
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padding: 0.35rem 0.7rem;
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border: 1px solid color-mix(in srgb, var(--border) 82%, var(--primary));
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border-radius: calc(var(--radius) - 0.35rem);
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background: color-mix(in srgb, var(--muted) 74%, transparent);
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color: var(--foreground);
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font: inherit;
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font-size: 0.78rem;
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font-weight: 700;
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cursor: pointer;
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}
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.preview-fullscreen-button:hover {
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background: color-mix(in srgb, var(--primary) 18%, var(--muted));
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}
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.preview-fullscreen-button[hidden] {
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display: none !important;
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}
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.preview-window-actions {
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display: inline-flex;
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gap: 0.35rem;
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}
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.preview-window-actions span {
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width: 0.72rem;
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height: 0.72rem;
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border: 1px solid color-mix(in srgb, var(--border) 75%, var(--foreground));
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border-radius: 999px;
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background: var(--muted);
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}
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.preview-tabs {
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display: flex;
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gap: 0.35rem;
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padding: 0.55rem 0.7rem;
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border-bottom: 1px solid var(--border);
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background: color-mix(in srgb, var(--card) 78%, transparent);
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}
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.preview-tabs[hidden] {
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display: none !important;
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}
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.preview-tab {
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appearance: none;
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min-height: 2rem;
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padding: 0.35rem 0.7rem;
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border: 1px solid transparent;
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border-radius: calc(var(--radius) - 0.35rem);
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background: transparent;
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color: var(--muted-foreground);
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font: inherit;
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font-size: 0.8rem;
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font-weight: 700;
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cursor: pointer;
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}
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.preview-tab:hover,
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.preview-tab.is-active {
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border-color: color-mix(in srgb, var(--border) 82%, var(--primary));
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background: color-mix(in srgb, var(--muted) 78%, transparent);
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color: var(--foreground);
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}
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.preview-stage {
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overflow: hidden;
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min-height: clamp(18rem, 64vh, 38rem);
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display: grid;
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place-items: center;
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background:
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linear-gradient(45deg, color-mix(in srgb, var(--muted) 18%, transparent) 25%, transparent 25%),
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linear-gradient(-45deg, color-mix(in srgb, var(--muted) 18%, transparent) 25%, transparent 25%),
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color-mix(in srgb, var(--background) 88%, #000);
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background-position: 0 0, 0.5rem 0.5rem;
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background-size: 1rem 1rem;
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}
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.preview-stage > * {
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grid-area: 1 / 1;
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}
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.preview-stage > img,
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.preview-stage > video {
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max-height: clamp(18rem, 64vh, 38rem);
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width: 100%;
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object-fit: contain;
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}
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.preview-stage > audio {
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width: min(42rem, calc(100% - 2rem));
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}
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.default-preview,
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.large-preview-gate {
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width: min(26rem, calc(100% - 2rem));
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display: grid;
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place-items: center;
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gap: 0.9rem;
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padding: 2rem;
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color: var(--muted-foreground);
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text-align: center;
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}
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.default-preview img {
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width: 5.5rem;
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height: 5.5rem;
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object-fit: contain;
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}
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.default-preview div {
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min-width: 0;
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display: grid;
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gap: 0.25rem;
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}
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.default-preview strong {
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max-width: 100%;
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overflow: hidden;
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color: var(--foreground);
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font-size: 1rem;
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text-overflow: ellipsis;
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white-space: nowrap;
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}
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.default-preview span {
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font-size: 0.86rem;
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}
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.large-preview-gate {
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border: 1px solid color-mix(in srgb, var(--border) 82%, var(--danger));
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border-radius: var(--radius);
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background: color-mix(in srgb, var(--card) 92%, #000);
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}
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.large-preview-gate strong {
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color: var(--foreground);
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font-size: 1rem;
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}
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.large-preview-gate p {
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margin: 0;
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line-height: 1.45;
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}
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.large-preview-gate div {
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display: flex;
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flex-wrap: wrap;
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justify-content: center;
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gap: 0.5rem;
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}
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.native-preview {
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width: 100%;
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height: clamp(18rem, 64vh, 38rem);
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}
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.native-audio-preview {
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align-self: center;
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width: min(42rem, calc(100% - 2rem));
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height: auto;
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}
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.preview-placeholder {
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display: grid;
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place-items: center;
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gap: 0.8rem;
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padding: 2rem;
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color: var(--muted-foreground);
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text-align: center;
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}
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.preview-placeholder[hidden],
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.default-preview[hidden],
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.native-preview[hidden],
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.large-preview-gate[hidden],
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.code-preview[hidden],
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.render-preview[hidden] {
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display: none !important;
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}
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.preview-placeholder img {
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width: 5rem;
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height: 5rem;
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object-fit: contain;
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opacity: 0.78;
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}
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.preview-placeholder p {
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margin: 0;
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font-size: 0.9rem;
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}
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.code-preview {
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min-width: 0;
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width: 100%;
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height: clamp(18rem, 64vh, 38rem);
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overflow: auto;
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background: #1b1724;
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}
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.code-preview pre[class*="language-"] {
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width: max-content;
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min-width: 100%;
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min-height: 100%;
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margin: 0;
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border: 0;
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border-radius: 0;
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box-shadow: none;
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background: transparent;
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font-size: 0.88rem;
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line-height: 1.55;
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overflow: visible;
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text-shadow: none;
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}
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.code-preview pre {
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width: max-content;
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min-width: 100%;
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min-height: 100%;
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margin: 0;
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padding: 1rem;
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overflow: visible;
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color: #f5f3ff;
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font-family: Consolas, Monaco, "Andale Mono", "Ubuntu Mono", monospace;
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font-size: 0.88rem;
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line-height: 1.55;
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white-space: pre;
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}
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.code-preview pre[class*="language-"] > code {
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white-space: pre;
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}
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.code-preview code[class*="language-"] {
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text-shadow: none;
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}
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.code-preview .token.punctuation {
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opacity: 0.9;
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}
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.render-preview {
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width: 100%;
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height: clamp(18rem, 64vh, 38rem);
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border: 0;
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background: var(--background);
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}
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.preview-window:fullscreen,
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.preview-window.is-render-fullscreen {
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width: 100dvw;
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height: 100dvh;
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max-width: none;
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display: grid;
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grid-template-rows: auto auto minmax(0, 1fr);
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border: 0;
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border-radius: 0;
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background: var(--background);
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}
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.preview-window.is-render-fullscreen {
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position: fixed;
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inset: 0;
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z-index: 1000;
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}
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.preview-window:fullscreen .preview-stage,
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.preview-window.is-render-fullscreen .preview-stage {
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min-height: 0;
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height: 100%;
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place-items: stretch;
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}
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.preview-window:fullscreen .render-preview,
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.preview-window.is-render-fullscreen .render-preview {
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width: 100%;
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height: 100%;
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}
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.file-emblem {
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width: 4rem;
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height: 4rem;
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@@ -801,23 +1169,36 @@ html.reaction-picker-open body {
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text-align: right;
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}
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.preview-stage {
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overflow: hidden;
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margin-bottom: 1rem;
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border: 1px solid var(--border);
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border-radius: var(--radius);
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background: var(--background);
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}
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@media (max-width: 720px) {
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.preview-view {
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width: min(100%, calc(100% - 1rem));
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padding-block: 1rem;
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}
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.preview-stage img,
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.preview-stage video {
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width: 100%;
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max-height: 55vh;
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display: block;
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object-fit: contain;
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}
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.preview-header {
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flex-direction: column;
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align-items: stretch;
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}
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.preview-stage audio {
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width: calc(100% - 2rem);
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margin: 1rem;
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.preview-header .button {
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justify-content: center;
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}
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.preview-window-titlebar > div:first-child {
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display: grid;
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gap: 0.2rem;
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}
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.preview-stage,
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.code-preview,
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.render-preview,
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.native-preview {
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min-height: 18rem;
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height: min(60vh, 32rem);
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}
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.preview-stage > img,
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.preview-stage > video {
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max-height: min(60vh, 32rem);
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}
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}
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