/* ===========================================
   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(--bg-normal);
    --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-primary-text: #ffffff;
    --slide-presentation-btn-secondary-bg: var(--bg-normal);
    --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-bg: var(--bg-normal);
    --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-bg: #1c1c20;
    --slide-presentation-preview-border: rgba(255, 255, 255, 0.06);
}

/* ── Confirmation Widget ─────────────────── */
.slide-presentation-confirm-widget {
    width: 100%;
    color: var(--slide-presentation-text-primary);
}

.slide-presentation-confirm-widget[data-confirmed="true"] {
    opacity: 0.5;
    pointer-events: none;
}

.slide-presentation-confirm-header {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
}

.slide-presentation-confirm-title {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--slide-presentation-text-primary);
    letter-spacing: -0.01em;
}

.slide-presentation-confirm-desc {
    margin: 0;
    font-size: 13px;
    color: var(--slide-presentation-text-secondary);
    line-height: 1.5;
}

.slide-presentation-confirm-body {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--slide-presentation-card-border);
    border-radius: 12px;
    background: var(--slide-presentation-card-bg);
    overflow: hidden;
}

.slide-presentation-confirm-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 16px 20px;
    border-bottom: 1px solid var(--slide-presentation-card-border);
}

.slide-presentation-confirm-row[hidden] {
    display: none;
}

.slide-presentation-confirm-row:last-child {
    border-bottom: none;
}

.slide-presentation-confirm-row-col {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
}

.slide-presentation-confirm-row-left {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.slide-presentation-confirm-row-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--slide-presentation-text-primary);
}

.slide-presentation-confirm-row-desc {
    font-size: 13px;
    color: var(--slide-presentation-text-secondary);
    line-height: 1.4;
}

.slide-presentation-confirm-row-control {
    flex-shrink: 0;
}

.slide-presentation-confirm-row-col .slide-presentation-confirm-row-control {
    width: 100%;
    flex-shrink: 1;
}

.slide-presentation-confirm-input {
    background: var(--slide-presentation-input-bg);
    border: 1px solid var(--slide-presentation-input-border);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 13px;
    color: var(--slide-presentation-text-primary);
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    width: 100%;
    box-sizing: border-box;
    min-width: 100px;
}

.slide-presentation-confirm-input:focus {
    border-color: var(--slide-presentation-input-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.08);
}

:root[data-mode="dark"] .slide-presentation-confirm-input:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.slide-presentation-confirm-row:not(.slide-presentation-confirm-row-col) .slide-presentation-confirm-input {
    max-width: 140px;
    text-align: center;
}

.slide-presentation-confirm-textarea {
    resize: vertical;
    min-height: 48px;
    line-height: 1.5;
    max-width: none;
    text-align: left;
}

/* Toggle */
.slide-presentation-confirm-toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
    user-select: none;
    position: relative;
}

.slide-presentation-confirm-toggle input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.slide-presentation-confirm-toggle-track {
    width: 40px;
    height: 22px;
    background: var(--slide-presentation-toggle-bg);
    border-radius: 11px;
    position: relative;
    transition: background 0.2s ease;
    flex-shrink: 0;
}

.slide-presentation-confirm-toggle-track::after {
    content: "";
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.slide-presentation-confirm-toggle input:checked + .slide-presentation-confirm-toggle-track {
    background: var(--slide-presentation-toggle-active);
}

.slide-presentation-confirm-toggle input:checked + .slide-presentation-confirm-toggle-track::after {
    transform: translateX(18px);
}

/* Range slider */
.slide-presentation-confirm-range {
    width: 120px;
    accent-color: var(--slide-presentation-accent);
    cursor: pointer;
}

/* Actions */
.slide-presentation-confirm-actions {
    display: flex;
    justify-content: flex-end;
    margin-top: 16px;
}

.slide-presentation-confirm-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.15s ease;
    font-family: inherit;
}

.slide-presentation-confirm-btn:active {
    transform: scale(0.97);
}

.slide-presentation-confirm-btn.is-busy {
    opacity: 0.8;
    cursor: progress;
}

.slide-presentation-confirm-btn-primary {
    background: var(--slide-presentation-btn-primary-bg);
    color: var(--slide-presentation-btn-primary-text);
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-confirm-btn-primary:hover {
        opacity: 0.9;
    }
}

/* ── Preview Panel ───────────────────────── */
.slide-presentation-preview-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 52%;
    max-width: 900px;
    min-width: 420px;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--slide-presentation-preview-bg);
    border-left: 1px solid var(--slide-presentation-preview-border);
    z-index: 40;
    overflow: hidden;
    transform: translateX(100%);
    opacity: 0;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.25s ease;
}

.slide-presentation-preview-panel.visible {
    transform: translateX(0);
    opacity: 1;
}

body.slide-presentation-preview-open .main-container {
    margin-right: 52%;
    transition: margin-right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (min-width: 1400px) {
    body.slide-presentation-preview-open .main-container {
        margin-right: min(52%, 900px);
    }
}

@media (max-width: 900px) {
    .slide-presentation-preview-panel {
        width: 100%;
        min-width: unset;
        z-index: 200;
    }
    body.slide-presentation-preview-open .main-container {
        margin-right: 0;
    }
     }

/* Panel Header */
.slide-presentation-preview-panel-header {
    height: 50px;
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 0 16px;
    background: var(--slide-presentation-card-bg);
    flex-shrink: 0;
    overflow: hidden;
}

.slide-presentation-preview-panel-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1 1 auto;
    min-width: 0;
}

.slide-presentation-preview-panel-left > * {
    flex-shrink: 0;
}

.slide-presentation-preview-panel-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--slide-presentation-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-preview-panel-btn:hover {
        background: var(--slide-presentation-input-bg);
        color: var(--slide-presentation-text-primary);
    }
}

.slide-presentation-preview-panel-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1 1 auto;
}

.slide-presentation-preview-panel-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--slide-presentation-text-primary);
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.slide-presentation-preview-btn-label {
    display: inline;
}

@media (max-width: 1199px) {
    .slide-presentation-preview-btn-label {
        display: none;
    }
     }

.slide-presentation-preview-panel-status {
    font-size: 11px;
    color: var(--slide-presentation-text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    overflow: hidden;
}

.slide-presentation-preview-panel-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 0 0 auto;
    min-width: 0;
    max-width: 100%;
}

.slide-presentation-preview-download-controls {
    min-width: 0;
    max-width: 100%;
}

.slide-presentation-preview-download-btn {
    min-width: 0;
}

.slide-presentation-preview-panel-btn-present {
    min-width: 0;
}

.slide-presentation-preview-panel-status.generating::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--slide-presentation-accent);
    border-radius: 50%;
    animation: pulseDim 1.5s ease-in-out infinite;
}

.slide-presentation-preview-panel-status.complete::before {
    content: "";
    width: 6px;
    height: 6px;
    background: #22c55e;
    border-radius: 50%;
}

/* Download controls pill */
.slide-presentation-preview-download-controls {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--slide-presentation-card-bg);
    border: 1px solid var(--slide-presentation-preview-border);
    border-radius: 999px;
    padding-left: 10px;
}

.slide-presentation-preview-download-select {
    border: none;
    background: transparent;
    color: var(--slide-presentation-text-primary);
    font-size: 12px;
    font-weight: 500;
    outline: none;
    cursor: pointer;
    appearance: none;
    padding-right: 4px;
}

.slide-presentation-preview-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--slide-presentation-preview-bg);
    border-radius: 999px;
    border: 1px solid transparent;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--slide-presentation-text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-preview-download-btn:not(.disabled):hover {
        color: var(--slide-presentation-accent);
    }
}

.slide-presentation-preview-download-btn.disabled {
    opacity: 0.4;
    pointer-events: none;
}

.slide-presentation-preview-download-btn,
.slide-presentation-preview-panel-btn-present {
    max-width: 100%;
}

/* Secondary button (Sidebar toggle) */
.slide-presentation-preview-panel-btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 9999px;
    border: 1px solid var(--slide-presentation-preview-border);
    background: var(--slide-presentation-card-bg);
    color: var(--slide-presentation-text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.slide-presentation-preview-panel-btn-secondary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Present button */
.slide-presentation-preview-panel-btn-present {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--slide-presentation-accent);
    color: var(--slide-presentation-btn-primary-text);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: opacity 0.2s;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-preview-panel-btn-present:hover {
        opacity: 0.85;
    }
}

.slide-presentation-preview-panel-btn-present:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Panel Workspace */
.slide-presentation-preview-panel-workspace {
    flex: 1;
    display: flex;
    overflow: hidden;
    border-top: 1px solid var(--slide-presentation-preview-border);
}

/* Sidebar (thumbnails) */
.slide-presentation-preview-sidebar {
    width: 180px;
    background: var(--slide-presentation-card-bg);
    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;
}

.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%;
    aspect-ratio: 16 / 9;
    background: var(--slide-presentation-input-bg);
    border-radius: 6px;
    overflow: hidden;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}

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

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

/* Generating State */
.slide-presentation-preview-generating {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    background: var(--slide-presentation-preview-bg);
    transition: opacity 0.4s ease;
}

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

.slide-presentation-preview-generating-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    max-width: 400px;
    width: 100%;
    padding: 0 24px;
}

/* Phase icon */
.slide-presentation-gen-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(59,130,246,0.12), rgba(139,92,246,0.12));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--slide-presentation-accent);
    animation: slide-presentation-GenIconPulse 2s ease-in-out infinite;
}

:root[data-mode="dark"] .slide-presentation-gen-icon {
    background: linear-gradient(135deg, rgba(59,130,246,0.18), rgba(139,92,246,0.18));
}

.slide-presentation-gen-icon svg {
    animation: spin 3s linear infinite;
}

/* Phase label */
.slide-presentation-gen-phase-label {
    font-size: 15px;
    font-weight: 600;
    color: var(--slide-presentation-text-primary);
    text-align: center;
}

/* Skeleton slide placeholder */
.slide-presentation-gen-skeleton {
    width: 100%;
    max-width: 360px;
}

.slide-presentation-gen-skeleton-slide {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: var(--slide-presentation-card-bg);
    border: 1px solid var(--slide-presentation-card-border);
    border-radius: 10px;
    padding: 14% 8% 8%;
    display: flex;
    flex-direction: column;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

:root[data-mode="dark"] .slide-presentation-gen-skeleton-slide {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.slide-presentation-skel-title {
    width: 50%;
    height: 14px;
    border-radius: 4px;
    background: var(--slide-presentation-preview-border);
    animation: slide-presentation-SkelShimmer 1.6s ease-in-out infinite;
}

.slide-presentation-skel-line {
    height: 8px;
    border-radius: 3px;
    background: var(--slide-presentation-preview-border);
    animation: slide-presentation-SkelShimmer 1.6s ease-in-out infinite;
}

.slide-presentation-skel-line.w80 {
    width: 80%;
    animation-delay: 0.1s;
}
.slide-presentation-skel-line.w60 {
    width: 60%;
    animation-delay: 0.2s;
}
.slide-presentation-skel-line.w70 {
    width: 70%;
    animation-delay: 0.3s;
}

.slide-presentation-skel-blocks {
    display: flex;
    gap: 6px;
    margin-top: auto;
}

.slide-presentation-skel-block {
    flex: 1;
    aspect-ratio: 1;
    border-radius: 6px;
    background: var(--slide-presentation-preview-border);
    animation: slide-presentation-SkelShimmer 1.6s ease-in-out infinite;
}

.slide-presentation-skel-block:nth-child(1) { animation-delay: 0.15s; }
.slide-presentation-skel-block:nth-child(2) { animation-delay: 0.3s; }
.slide-presentation-skel-block:nth-child(3) { animation-delay: 0.45s; }

/* Phase steps (stepper) */
.slide-presentation-gen-steps {
    display: flex;
    align-items: center;
    gap: 6px;
}

.slide-presentation-gen-step {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    font-weight: 500;
    color: var(--slide-presentation-text-secondary);
    opacity: 0.45;
    transition: opacity 0.3s ease, color 0.3s ease;
}

.slide-presentation-gen-step.active {
    opacity: 1;
    color: var(--slide-presentation-accent);
}

.slide-presentation-gen-step.done {
    opacity: 0.7;
    color: #22c55e;
}

.slide-presentation-gen-step-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
}

.slide-presentation-gen-step.active .slide-presentation-gen-step-dot {
    animation: slide-presentation-StepDotPulse 1.2s ease-in-out infinite;
}

.slide-presentation-gen-step + .slide-presentation-gen-step::before {
    content: "";
    width: 16px;
    height: 1px;
    background: var(--slide-presentation-preview-border);
    margin-right: 6px;
}

/* ── Scrollable Snap Slides Track ───────── */
.slide-presentation-preview-slides-track {
    flex: 1;
    overflow-y: scroll;
    overflow-x: hidden;
    scroll-snap-type: y proximity;
    scroll-padding-block: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 24px 24px;
    scrollbar-width: thin;
    scrollbar-color: var(--slide-presentation-preview-border) transparent;
}

.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: white;
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
    overflow: hidden;
    scroll-snap-align: center;
    scroll-snap-stop: normal;
    position: relative;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    transform: scale(0.97);
    opacity: 0.75;
}

.slide-presentation-preview-slide-item.active {
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.22);
    transform: scale(1);
    opacity: 1;
}

.slide-presentation-preview-slide-item.switching-in {
    animation: slide-presentation-preview-crossfade-in 320ms ease both;
    will-change: opacity, filter;
}

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

/* 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: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.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);
}

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

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

.slide-presentation-slideshow-img,
.slide-presentation-ss-img-real,
.slide-presentation-ss-iframe {
    max-width: 100%;
    max-height: calc(100vh - 120px);
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 8px 60px rgba(0,0,0,0.6);
    transition: opacity 250ms ease;
    will-change: opacity;
    position: relative;
    z-index: 1;
    pointer-events: none;
}

.slide-presentation-slideshow-img.fading,
.slide-presentation-ss-img-real.fading,
.slide-presentation-ss-iframe.fading {
    opacity: 0;
}

.slide-presentation-ss-img-real.switching-in,
.slide-presentation-ss-iframe.switching-in {
    animation: slide-presentation-slideshow-crossfade-in 360ms ease both;
    will-change: opacity, filter;
}

.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-slideshow-stage {
    padding: 0;
    width: 100vw;
    height: 100vh;
}

.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-slideshow-img,
.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-ss-img-real,
.slide-presentation-slideshow-overlay.is-fullscreen .slide-presentation-ss-iframe {
    max-height: 100vh;
    max-width: 100vw;
    border-radius: 0;
    box-shadow: none;
}

[data-reduce-animations="true"] .slide-presentation-preview-slide-item.switching-in,
[data-reduce-animations="true"] .slide-presentation-ss-img-real.switching-in,
[data-reduce-animations="true"] .slide-presentation-ss-iframe.switching-in {
    animation: none;
}

@media (prefers-reduced-motion: reduce) {
    .slide-presentation-preview-slide-item.switching-in,
    .slide-presentation-ss-img-real.switching-in,
    .slide-presentation-ss-iframe.switching-in {
        animation: 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,
.slide-presentation-slideshow-controls.always-visible {
    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-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;
    transition: all 250ms ease;
}

@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);
}

/* ── Completion Card ──────────────────────── */
.slide-presentation-completion-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    background: var(--slide-presentation-card-bg);
    border: 1px solid var(--slide-presentation-card-border);
    border-radius: 12px;
    margin-bottom: 12px;
    animation: fadeInUp4 300ms ease;
}

.slide-presentation-completion-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: rgba(74,222,128,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: #16a34a;
}
:root[data-mode="dark"] .slide-presentation-completion-icon { background: rgba(74,222,128,0.1); color: #4ade80; }

.slide-presentation-completion-info {
    flex: 1;
    min-width: 0;
}

.slide-presentation-completion-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--slide-presentation-text-primary);
    margin-bottom: 2px;
}

.slide-presentation-completion-sub {
    font-size: 12px;
    color: var(--slide-presentation-text-secondary);
}

/* Generating state */
.slide-presentation-completion-card.generating .slide-presentation-completion-icon {
    background: rgba(59,130,246,0.12);
    color: var(--slide-presentation-accent);
}
:root[data-mode="dark"] .slide-presentation-completion-card.generating .slide-presentation-completion-icon {
    background: rgba(59,130,246,0.15);
}

.slide-presentation-completion-card.generating .slide-presentation-completion-icon svg {
    animation: spin 1.8s linear infinite;
}

.slide-presentation-completion-card.generating .slide-presentation-completion-view-btn {
    background: var(--slide-presentation-btn-secondary-bg);
    color: var(--slide-presentation-btn-secondary-text);
}

.slide-presentation-completion-view-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--slide-presentation-btn-primary-bg);
    color: var(--slide-presentation-btn-primary-text);
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: opacity 180ms ease;
    flex-shrink: 0;
    white-space: nowrap;
    font-family: inherit;
}

@media (hover: hover) and (pointer: fine) {
    .slide-presentation-completion-view-btn:hover {
        opacity: 0.85;
    }
}

/* ── Responsive ──────────────────────────── */
@media (max-width: 768px) {
    .slide-presentation-confirm-row:not(.slide-presentation-confirm-row-col) {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .slide-presentation-confirm-row:not(.slide-presentation-confirm-row-col) .slide-presentation-confirm-input {
        max-width: none;
        text-align: left;
    }
    .slide-presentation-confirm-row-control {
        width: 100%;
    }
    .slide-presentation-confirm-row {
        padding: 14px 16px;
    }
    .slide-presentation-confirm-range {
        width: 100%;
    }
    .slide-presentation-slideshow-stage {
        padding: 16px;
    }
    .slide-presentation-slideshow-img {
        max-height: calc(100vh - 100px);
    }
    .slide-presentation-slideshow-controls {
        bottom: 16px;
        padding: 4px 8px;
    }
    .slide-presentation-slideshow-progress {
        bottom: 64px;
    }
     }