/* ===========================================
   Slides Presentation Confirmation Widget & Preview Panel
   =========================================== */

/* ── Theme Tokens ────────────────────────── */
:root {
    --slide-presentation-card-bg: var(--bg-primary, #ffffff);
    --slide-presentation-card-border: var(--border-color, rgba(0, 0, 0, 0.08));
    --slide-presentation-card-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --slide-presentation-text-primary: var(--text-color, #1a1a1a);
    --slide-presentation-text-secondary: var(--text-color-secondary, #6b7280);
    --slide-presentation-input-bg: var(--surface-elevated);
    --slide-presentation-input-border: var(--border-color, rgba(0, 0, 0, 0.1));
    --slide-presentation-input-focus: var(--accent-color, #3b82f6);
    --slide-presentation-btn-primary-bg: var(--accent-color, #3b82f6);
    --slide-presentation-btn-secondary-bg: var(--surface-elevated);
    --slide-presentation-btn-secondary-text: var(--text-color, #374151);
    --slide-presentation-accent: var(--accent-color, #3b82f6);
    --slide-presentation-toggle-bg: var(--admin-hover, #e5e7eb);
    --slide-presentation-toggle-active: var(--accent-color, #3b82f6);
    --slide-presentation-preview-border: var(--border-color, rgba(0, 0, 0, 0.08));
}

:root[data-mode="dark"] {
    --slide-presentation-card-bg: var(--bg-primary, #18181b);
    --slide-presentation-card-border: var(--border-color, rgba(255, 255, 255, 0.08));
    --slide-presentation-card-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    --slide-presentation-text-primary: var(--text-color, #f5f5f5);
    --slide-presentation-text-secondary: var(--text-color-secondary, #a1a1aa);
    --slide-presentation-input-bg: #27272a;
    --slide-presentation-input-border: rgba(255, 255, 255, 0.1);
    --slide-presentation-btn-secondary-bg: #27272a;
    --slide-presentation-btn-secondary-text: var(--text-color, #e4e4e7);
    --slide-presentation-toggle-bg: #3f3f46;
    --slide-presentation-preview-border: rgba(255, 255, 255, 0.06);
}

/* ── Shared Canvas panel integration ──────────────────────── */
/* Layout, sizing, transitions, header, title, status, and workspace chrome
   come from canvas-widget.css through the shared canvas-markdown-* classes. */
body.slide-presentation-preview-open .main-container {
    margin-right: var(--canvas-markdown-resolved-preview-width);
    transition: margin-right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-presentation-preview-panel-right {
    max-width: 100%;
}

@media (max-width: 900px) {
    body.slide-presentation-preview-open .main-container {
        margin-right: 0;
    }
}
@container canvas-preview (max-width: 600px) {
    .slide-presentation-preview-panel-header {
        height: auto;
        min-height: 50px;
        flex-wrap: wrap;
        gap: 8px;
        padding-block: 8px;
    }
    .slide-presentation-preview-panel-left {
        flex-basis: 100%;
    }
    .slide-presentation-preview-panel-right {
        flex: 1 1 100%;
        flex-wrap: wrap;
        min-width: 0;
    }
}

/* ── Native whole-site presentation editor ─────────────────────────── */
body.slide-presentation-editor-open {
    overflow: hidden;
}

.slide-presentation-editor-overlay {
    position: fixed;
    inset: 0;
    z-index: 12000;
    display: none;
    background: var(--surface-elevated);
    backdrop-filter: var(--modal-overlay-backdrop-filter);
    -webkit-backdrop-filter: var(--modal-overlay-backdrop-filter);
}

.slide-presentation-editor-overlay.open {
    display: block;
}

.slide-presentation-editor-host {
    width: 100%;
    height: 100%;
    display: block;
    border: 0;
    background: var(--surface-elevated);
    overflow: hidden;
    opacity: 0;
}

.slide-presentation-editor-overlay.ready .slide-presentation-editor-host {
    opacity: 1;
}

.slide-presentation-editor-loading {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-color-secondary);
    background: var(--surface-elevated);
}

.slide-presentation-editor-overlay.ready .slide-presentation-editor-loading {
    display: none;
}

.slide-presentation-editor-fallback-close {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 2;
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-color);
    background: var(--surface-elevated);
    cursor: pointer;
}

.slide-presentation-editor-fallback-close span,
.slide-presentation-editor-fallback-close svg {
    width: 18px;
    height: 18px;
    display: block;
}

.slide-presentation-editor-overlay.ready .slide-presentation-editor-fallback-close {
    display: none;
}

.slide-presentation-editor-fallback-close:focus-visible {
    outline: 2px solid var(--slide-presentation-accent);
    outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-editor-fallback-close:hover {
        background: var(--surface-interactive-hover);
    }
}

.slide-presentation-preview-spinner {
    width: 22px;
    height: 22px;
    border: 2px solid var(--slide-presentation-preview-border);
    border-top-color: var(--slide-presentation-accent);
    border-radius: 50%;
    animation: spin 800ms linear infinite;
}

@media (prefers-reduced-motion: reduce) {
    .slide-presentation-preview-spinner {
        animation: none;
    }
}

/* Sidebar (thumbnails) */
.slide-presentation-preview-sidebar {
    width: 180px;
    border-right: 1px solid var(--slide-presentation-preview-border);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow: hidden;
    flex-shrink: 0;
    opacity: 1;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                padding 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.25s ease,
                border-right-width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-presentation-preview-sidebar.collapsed {
    width: 0;
    padding: 0;
    opacity: 0;
    border-right-width: 0;
    pointer-events: none;
}

.slide-presentation-preview-sidebar:not(.collapsed) {
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
}

.slide-presentation-preview-sidebar-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--slide-presentation-text-secondary);
    letter-spacing: 0.05em;
}

.slide-presentation-preview-thumbnails {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.slide-presentation-preview-thumbnail {
    position: relative;
    width: 100%;
    flex: 0 0 auto;
    aspect-ratio: 16 / 9;
    background: var(--slide-presentation-input-bg);
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    padding: 0;
    appearance: none;
    color: inherit;
    font: inherit;
    text-align: initial;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-preview-thumbnail:hover {
        border-color: var(--slide-presentation-text-secondary);
    }
}

.slide-presentation-preview-thumbnail.active {
    border-color: var(--slide-presentation-accent);
}

.slide-presentation-preview-thumbnail:focus-visible {
    outline: 2px solid var(--slide-presentation-accent);
    outline-offset: 2px;
}

.slide-presentation-preview-thumbnail-number {
    position: absolute;
    bottom: 4px;
    right: 4px;
    font-size: 10px;
    font-weight: 600;
    color: #fff;
    background: rgba(0, 0, 0, 0.6);
    padding: 2px 6px;
    border-radius: 4px;
}

.slide-presentation-preview-thumbnail iframe {
    width: 1920px;
    height: 1080px;
    border: none;
    transform-origin: top left;
    pointer-events: none;
    display: block;
}

/* Rendered PNGs already have the final 16:9 dimensions. Let the browser size
   the raster directly instead of scaling a 1920x1080 element with a transform.
   Transform scaling inside a rounded clipping layer can reveal a light
   antialiasing fringe at fractional preview widths. */
.slide-presentation-preview-thumbnail img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: fill;
    border: none;
    background: transparent;
    pointer-events: none;
    display: block;
    transform: none;
}

.slide-presentation-preview-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slide-presentation-text-secondary);
    background: var(--slide-presentation-input-bg);
    font-size: 14px;
    font-weight: 600;
}

/* Main Preview Area */
.slide-presentation-preview-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    position: relative;
    min-width: 0;
    overflow: hidden;
}

/* Keep the last complete revision visible while the backend renders edited
   source. A quiet, centered spinner and label communicate progress without
   replacing the deck with a blank loading screen. */
.slide-presentation-preview-updating {
    position: absolute;
    inset: 0;
    z-index: 12;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 24px;
    color: var(--slide-presentation-text-primary);
    pointer-events: none;
    transition: opacity 160ms ease;
}

.slide-presentation-preview-updating.hidden {
    opacity: 0;
    pointer-events: none;
}

.slide-presentation-preview-updating[hidden] {
    display: none;
}

.slide-presentation-preview-updating.error {
    pointer-events: auto;
}

.slide-presentation-preview-updating .slide-presentation-preview-spinner {
    width: 30px;
    height: 30px;
    border-width: 2px;
    border-color: color-mix(in srgb, var(--slide-presentation-text-primary) 22%, transparent);
    border-top-color: var(--slide-presentation-accent);
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.16));
}

.slide-presentation-preview-updating span {
    max-width: min(320px, 100%);
    overflow-wrap: anywhere;
    text-align: center;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.35;
}

.slide-presentation-preview-update-retry {
    flex: 0 0 auto;
    min-height: 28px;
    padding: 0 10px;
    border: 1px solid var(--slide-presentation-preview-border);
    border-radius: 8px;
    color: var(--slide-presentation-text-primary);
    background: var(--surface-interactive);
    font: inherit;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.slide-presentation-preview-update-retry.hidden {
    display: none;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-preview-update-retry:hover {
        background: var(--surface-interactive-hover);
    }
}

.slide-presentation-preview-main.is-updating .slide-presentation-preview-slides-track {
    opacity: 0.58;
}

@media (prefers-reduced-motion: reduce) {
    .slide-presentation-preview-updating,
    .slide-presentation-preview-slides-track {
        transition: none;
    }
}

.slide-presentation-preview-main > [hidden],
.slide-presentation-preview-sidebar[hidden] {
    display: none !important;
}

.slide-presentation-source-panel {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    min-width: 0;
    padding: 12px;
    gap: 10px;
}

.slide-presentation-source-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.slide-presentation-source-actions [role="status"] {
    color: var(--slide-presentation-text-secondary);
    font-size: 13px;
}

.slide-presentation-source-panel textarea {
    flex: 1;
    min-height: 0;
    width: 100%;
    resize: none;
    font-family: var(--font-courier);
    font-size: 13px;
    line-height: 1.5;
    tab-size: 2;
}

/* The specialist shares the subagent transcript layout and scroll behavior. */
.slide-presentation-preview-activity:not([hidden]) {
    position: absolute;
    inset: 0;
    display: flex;
    background: var(--background);
    z-index: 2;
}

.slide-presentation-preview-activity .subagent-transcript-panel {
    display: flex;
    flex: 1;
    min-width: 0;
    min-height: 0;
}

/* ── Scrollable Snap Slides Track ───────── */
.slide-presentation-preview-slides-track {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
    touch-action: pan-y;
    scroll-snap-type: y proximity;
    scroll-padding-block: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 24px 24px;
    scrollbar-width: thin;
    scrollbar-color: var(--slide-presentation-preview-border) transparent;
    transition: opacity 160ms ease;
}

.slide-presentation-preview-slides-track::-webkit-scrollbar {
    width: 6px;
}
.slide-presentation-preview-slides-track::-webkit-scrollbar-track {
    background: transparent;
}
.slide-presentation-preview-slides-track::-webkit-scrollbar-thumb {
    background: var(--slide-presentation-preview-border);
    border-radius: 3px;
}

/* Each slide wrapper inside the track */
.slide-presentation-preview-slide-item {
    flex-shrink: 0;
    width: 100%;
    max-width: 860px;
    aspect-ratio: 16 / 9;
    background: transparent;
    border-radius: 8px;
    overflow: hidden;
    isolation: isolate;
    scroll-snap-align: center;
    scroll-snap-stop: normal;
    position: relative;
    transition:
        box-shadow 240ms ease,
        transform 200ms cubic-bezier(0.2, 0.7, 0.2, 1),
        opacity 160ms ease-out;
    transform: scale(0.97);
    opacity: 0.75;
}

.slide-presentation-preview-slide-item.active {
    transform: scale(1);
    opacity: 1;
}

/* A complete refinement revision replaces images atomically. This brief,
   low-motion emphasis communicates the update without clearing the deck or
   moving the user's current slide. */
.slide-presentation-preview-slide-item.revision-updated {
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--slide-presentation-accent) 48%, transparent),
                0 8px 40px color-mix(in srgb, var(--slide-presentation-accent) 14%, transparent);
}

.slide-presentation-preview-thumbnail.revision-updated {
    border-color: color-mix(in srgb, var(--slide-presentation-accent) 62%, var(--slide-presentation-preview-border));
}

.slide-presentation-preview-panel-status.warning {
    color: var(--slide-presentation-text-secondary);
}

@media (prefers-reduced-motion: reduce) {
    .slide-presentation-preview-slide-item {
        transition: none;
    }
}

.slide-presentation-preview-slide-item iframe {
    width: 1920px;
    height: 1080px;
    border: none;
    transform-origin: top left;
    background: white;
    pointer-events: none;
    display: block;
}

.slide-presentation-preview-slide-item iframe.interactive {
    position: absolute;
    inset: 0;
    pointer-events: auto;
    background: var(--background);
}

.slide-presentation-preview-slides-track:has(.scroll-document) {
    padding: 0;
    overflow: hidden;
    scrollbar-gutter: auto;
    min-height: 0;
}

.slide-presentation-preview-slide-item.scroll-document {
    flex: 1;
    min-height: 0;
    max-width: none;
    aspect-ratio: auto;
    border-radius: 0;
}

.slide-presentation-preview-slide-item.scroll-document iframe.interactive {
    width: 100%;
    height: 100%;
    transform: none;
}

/* Keep the rounded clip on the slide wrapper, but make the rendered image a
   full-size, untransformed layer. This prevents the image's former white
   background from being blended into the rounded edge by the compositor. */
.slide-presentation-preview-slide-item img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: fill;
    border: none;
    background: transparent;
    pointer-events: none;
    display: block;
    transform: none;
}

/* Counter overlay (bottom of main area) */
.slide-presentation-preview-slide-nav {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    background: rgba(0,0,0,0.45);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 20px;
    padding: 5px 14px;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    z-index: 5;
}

.slide-presentation-preview-slide-nav.visible {
    opacity: 1;
}

.slide-presentation-preview-slide-counter {
    font-size: 12px;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    min-width: 48px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

/* ── Canvas Files Dropdown ───────────────── */
.canvas-files-dropdown-wrap {
    position: relative;
}

.canvas-files-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 220px;
    background: var(--bg-primary, #fff);
    border: 1px solid var(--border-color, rgba(0,0,0,0.1));
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    padding: 6px;
    z-index: 200;
    opacity: 0;
    transform: translateY(-6px) scale(0.97);
    pointer-events: none;
    transition: opacity 0.18s ease, transform 0.18s ease;
}

:root[data-mode="dark"] .canvas-files-dropdown {
    background: var(--bg-primary, #18181b);
    border-color: var(--border-color, rgba(255,255,255,0.08));
    box-shadow: 0 8px 32px rgba(0,0,0,0.45);
}

.canvas-files-dropdown.open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.canvas-files-dropdown-label {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-color-secondary, #6b7280);
    padding: 4px 10px 6px;
}

.canvas-files-dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
    border: 1px solid transparent;
    background: transparent;
    width: 100%;
    text-align: left;
    font-family: inherit;
    color: var(--text-color, #1a1a1a);
}

:root[data-mode="dark"] .canvas-files-dropdown-item {
    color: var(--text-color, #f5f5f5);
}

@media (hover: hover) and (pointer: fine) {
    .canvas-files-dropdown-item:hover {
        background: color-mix(in srgb, var(--primary-color, #3b82f6) 12%, var(--background, #ffffff));
        border-color: color-mix(in srgb, var(--primary-color, #3b82f6) 28%, transparent);
        color: var(--primary-color, #3b82f6);
    }

    :root[data-mode="dark"] .canvas-files-dropdown-item:hover {
        background: color-mix(in srgb, var(--primary-color, #4E89F9) 18%, var(--background, #1F1F1F));
        border-color: color-mix(in srgb, var(--primary-color, #4E89F9) 36%, transparent);
    }
}

.canvas-files-dropdown-item-icon {
    width: 30px;
    height: 30px;
    border-radius: 7px;
    background: rgba(59,130,246,0.1);
    color: #3b82f6;
    transition: background 0.12s ease, color 0.12s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

:root[data-mode="dark"] .canvas-files-dropdown-item-icon {
    background: rgba(59,130,246,0.15);
}

@media (hover: hover) and (pointer: fine) {
    .canvas-files-dropdown-item:hover .canvas-files-dropdown-item-icon {
        background: var(--primary-color, #3b82f6);
        color: #ffffff;
    }
}

.canvas-files-dropdown-item-info {
    flex: 1;
    min-width: 0;
}

.canvas-files-dropdown-item-name {
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.canvas-files-dropdown-item-type {
    font-size: 11px;
    color: var(--text-color-secondary, #6b7280);
    margin-top: 1px;
}

/* ═══════════════════════════════════════════
   Slideshow Overlay (fullscreen viewer)
   ═══════════════════════════════════════════ */
.slide-presentation-slideshow-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 350ms cubic-bezier(.4,0,.2,1), visibility 0s linear 350ms;
}

.slide-presentation-slideshow-overlay.open {
    opacity: 1;
    visibility: visible;
    transition: opacity 350ms cubic-bezier(.4,0,.2,1), visibility 0s linear 0s;
}

.slide-presentation-slideshow-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: var(--modal-overlay-backdrop-filter);
    -webkit-backdrop-filter: var(--modal-overlay-backdrop-filter);
}

.slide-presentation-slideshow-container {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.slide-presentation-slideshow-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: opacity 400ms ease;
}

.slide-presentation-slideshow-loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.slide-presentation-slideshow-loader-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.slide-presentation-slideshow-loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255,255,255,0.12);
    border-top-color: rgba(255,255,255,0.8);
    border-radius: 50%;
    animation: spinTo360 700ms linear infinite;
}

.slide-presentation-slideshow-loader-text {
    font-size: 15px;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    letter-spacing: -0.01em;
}

.slide-presentation-slideshow-loader-progress {
    width: 200px;
    height: 3px;
    background: rgba(255,255,255,0.1);
    border-radius: 3px;
    overflow: hidden;
}

.slide-presentation-slideshow-loader-bar {
    height: 100%;
    width: 0%;
    background: rgba(255,255,255,0.7);
    border-radius: 3px;
    transition: width 250ms ease;
}

.slide-presentation-slideshow-loader-count {
    font-size: 12px;
    color: rgba(255,255,255,0.35);
}

/* Editor-triggered preview opens before its updated derivatives exist. Keep
   that short wait intentionally minimal: one spinner and one clear status. */
.slide-presentation-slideshow-overlay.is-loading .slide-presentation-slideshow-loader-progress,
.slide-presentation-slideshow-overlay.is-loading .slide-presentation-slideshow-loader-count,
.slide-presentation-slideshow-overlay.is-loading .slide-presentation-ss-nav,
.slide-presentation-slideshow-overlay.is-loading #slide-presentation-SsFullscreen,
.slide-presentation-slideshow-overlay.is-loading .slide-presentation-slideshow-progress {
    display: none;
}

.slide-presentation-slideshow-overlay.is-loading .slide-presentation-slideshow-controls {
    inset: 20px 20px auto auto;
    transform: none;
    padding: 2px;
    opacity: 1;
    background: rgba(30, 30, 30, 0.48);
}

.slide-presentation-slideshow-overlay.is-loading .slide-presentation-slideshow-loader-inner {
    gap: 14px;
}

.slide-presentation-slideshow-overlay.is-loading .slide-presentation-slideshow-loader-spinner {
    width: 30px;
    height: 30px;
    border-width: 2px;
}

.slide-presentation-slideshow-stage {
    position: relative;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 20px 60px;
    min-height: 0;
    min-width: 0;
    opacity: 0;
    transition: opacity 400ms ease;
    user-select: none;
}

.slide-presentation-slideshow-stage.visible {
    opacity: 1;
}

.slide-presentation-slideshow-viewport {
    position: relative;
    flex: none;
    overflow: hidden;
    border-radius: 6px;
    background: var(--background);
    box-shadow: var(--modal-shadow);
}

.slide-presentation-ss-iframe {
    position: absolute;
    inset: 0;
    width: 1920px;
    height: 1080px;
    border: 0;
    transform-origin: top left;
    color-scheme: light;
    background: Canvas;
    /* Script-free playback keeps navigation in the surrounding viewer. */
    pointer-events: none;
}

.slide-presentation-ss-iframe.interactive {
    pointer-events: auto;
}

.slide-presentation-ss-iframe.pending {
    visibility: hidden;
}

.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-slideshow-stage {
    padding: 0;
}

.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-slideshow-viewport {
    border-radius: 0;
    box-shadow: none;
}

.slide-presentation-slideshow-controls {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(30, 30, 30, 0.75);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 16px;
    padding: 6px 10px;
    opacity: 0;
    transition: opacity 300ms ease;
    z-index: 20;
}

.slide-presentation-slideshow-overlay.show-controls .slide-presentation-slideshow-controls,
.slide-presentation-slideshow-controls:focus-within{
    opacity: 1;
}

.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-slideshow-controls {
    bottom: clamp(16px, 4vh, 48px);
}

.slide-presentation-ss-btn {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.7);
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 180ms ease;
    flex-shrink: 0;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-ss-btn:hover {
        background: rgba(255,255,255,0.1);
        color: #fff;
    }
}

.slide-presentation-ss-btn:active {
    transform: scale(0.92);
}

.slide-presentation-ss-btn:disabled {
    opacity: 0.25;
    cursor: not-allowed;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-ss-btn:disabled:hover {
        background: transparent;
    }
}

.slide-presentation-ss-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.slide-presentation-ss-position {
    display: flex;
    flex-direction: column;
    align-items: center;
    white-space: nowrap;
}

.slide-presentation-ss-counter {
    font-size: 13px;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
    min-width: 56px;
    text-align: center;
    font-variant-numeric: tabular-nums;
    user-select: none;
}

.slide-presentation-slideshow-progress {
    position: absolute;
    bottom: 76px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 20;
    opacity: 0;
    transition: opacity 300ms ease;
}

.slide-presentation-slideshow-overlay.show-controls .slide-presentation-slideshow-progress {
    opacity: 1;
}

.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-slideshow-progress {
    bottom: clamp(96px, 12vh, 140px);
}

.slide-presentation-ss-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    cursor: pointer;
    border: 0;
    padding: 0;
    transition: all 250ms ease;
}

.slide-presentation-ss-dot:focus-visible {
    outline: 2px solid #fff;
    outline-offset: 3px;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-ss-dot:hover {
        background: rgba(255,255,255,0.5);
        transform: scale(1.3);
    }
}

.slide-presentation-ss-dot.active {
    background: rgba(255,255,255,0.85);
    transform: scale(1.2);
}

/* ── Responsive ──────────────────────────── */
@media (max-width: 768px) {
    .slide-presentation-slideshow-stage {
        padding: 16px;
    }
    .slide-presentation-slideshow-controls {
        bottom: 16px;
        padding: 4px 8px;
    }
    .slide-presentation-slideshow-progress {
        bottom: 64px;
    }
     }

.slide-presentation-editor-frame { display: block; width: 100%; height: 100%; border: 0; }