/* Premium Microsoft PowerPoint UI & Contextual Slide Editor Styles */

:root {
    --ppt-orange: #d24726;
    --ppt-orange-dark: #b83d1e;
    --ppt-orange-light: #fdf3f0;
    --ppt-border: #e1dfdd;
    --ppt-bg-gray: #f3f2f1;
    --ppt-text-dark: #323130;
    --ppt-text-muted: #605e5c;
    --ppt-accent-blue: #0078d4;
    --ppt-white: #ffffff;
    
    /* Workspace Dimensions */
    --slide-width: 960px;
    --slide-height: 540px;
}

body.ppt-dark-mode {
    --ppt-bg-gray: #1e1e1c;
    --ppt-border: #3b3a39;
    --ppt-text-dark: #f3f2f1;
    --ppt-text-muted: #a19f9d;
    --ppt-white: #252423;
}

.ppt-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100%;
    background-color: var(--ppt-bg-gray);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    transition: background-color 0.25s ease;
}

/* Mobile: ppt-app starts below compact topbar */
@media (max-width: 768px) {
    body.mob-app-view .ppt-app,
    body.forced-mobile-mode.mob-app-view .ppt-app {
        top: 38px !important;
        height: calc(100dvh - 38px) !important;
        z-index: 200 !important;
    }
}

/* --- TITLE BAR --- */
.ppt-titlebar {
    background-color: var(--ppt-orange);
    color: white;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    user-select: none;
    flex-shrink: 0;
}

.ppt-title-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ppt-back-btn {
    background: transparent;
    border: none;
    color: white;
    font-size: 18px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: 0.15s;
}
.ppt-back-btn:hover { background-color: rgba(255, 255, 255, 0.2); }

.ppt-title-text {
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

/* --- RIBBON TABS --- */
.ppt-ribbon-container {
    background-color: var(--ppt-bg-gray);
    border-bottom: 1px solid var(--ppt-border);
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(0,0,0,0.04);
    overflow: visible;
}

.ppt-tabs {
    display: flex !important;
    flex-wrap: nowrap !important;
    background-color: var(--ppt-orange);
    padding-left: 16px;
    overflow-x: auto !important;
    align-items: stretch;
    min-height: 26px;
}
.ppt-tabs::-webkit-scrollbar { height: 0px; }

.ppt-tab {
    padding: 4px 12px;
    color: white;
    font-size: 11px;
    cursor: pointer;
    border: 1px solid transparent;
    border-bottom: none;
    margin-right: 1px;
    font-weight: 500;
    transition: background-color 0.15s;
    white-space: nowrap !important;
    flex-shrink: 0 !important;
    line-height: 1.4;
}

.ppt-tab.active {
    background-color: var(--ppt-bg-gray);
    color: var(--ppt-orange);
    border-color: var(--ppt-border);
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
    font-weight: 600;
}

.ppt-tab:hover:not(.active) {
    background-color: rgba(255, 255, 255, 0.12);
}

/* Dynamic Contextual Tab Style */
.ppt-tab.contextual-tab {
    background-color: #0078d4;
    color: white;
    display: none; /* hidden by default, shown by JS */
    font-weight: bold;
    border-top-left-radius: 4px;
    border-top-right-radius: 4px;
}

.ppt-tab.contextual-tab.active {
    background-color: var(--ppt-bg-gray);
    color: #0078d4;
    border-color: var(--ppt-border);
}

/* --- RIBBON PANELS --- */
.ppt-ribbon-panel {
    display: none;
    height: 64px;
    padding: 2px 8px 12px;
    align-items: flex-start;
    gap: 4px;
    overflow-x: auto;
    overflow-y: visible;
    background-color: var(--ppt-bg-gray);
    flex-wrap: nowrap;
}
.ppt-ribbon-panel::-webkit-scrollbar { height: 3px; }
.ppt-ribbon-panel::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
.ppt-ribbon-panel.active { display: flex; }

.ppt-ribbon-group {
    display: flex;
    flex-direction: column;
    height: 100%;
    border-right: 1px solid var(--ppt-border);
    padding: 0 6px 11px 0;
    position: relative;
    justify-content: flex-start;
    overflow: visible;
    flex-shrink: 0;
    min-width: max-content;
}
.ppt-ribbon-group:last-child { border-right: none; }

.ppt-ribbon-group-label {
    position: absolute;
    bottom: 1px;
    width: 100%;
    text-align: center;
    font-size: 9px;
    color: var(--ppt-text-muted);
    left: 0;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    pointer-events: none;
    white-space: nowrap;
}

.ppt-btn-grid {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2px;
    height: 42px;
}

.ppt-tool-btn {
    background: transparent;
    border: 1px solid transparent;
    border-radius: 3px;
    padding: 2px 4px;
    font-size: 9px;
    color: var(--ppt-text-dark);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1px;
    transition: 0.12s;
    min-width: 34px;
    height: 42px;
    font-weight: 500;
    white-space: nowrap;
    flex-shrink: 0;
}
.ppt-tool-btn:hover {
    background-color: rgba(0,0,0,0.05);
    border-color: rgba(0,0,0,0.08);
}
.ppt-tool-btn i { font-size: 14px; color: var(--ppt-orange); }
.ppt-tool-btn.small {
    flex-direction: row;
    font-size: 10px;
    padding: 2px 5px;
    height: 18px;
    min-width: unset;
    gap: 3px;
    border-radius: 3px;
    white-space: nowrap;
    flex-shrink: 0;
}
.ppt-tool-btn.small i { font-size: 10px; }
.ppt-tool-btn.active-tool {
    background-color: var(--ppt-orange-light);
    border-color: rgba(210,71,38,0.25);
    color: var(--ppt-orange);
}

.ppt-select {
    padding: 3px 6px;
    border: 1px solid var(--ppt-border);
    border-radius: 4px;
    font-size: 11px;
    color: var(--ppt-text-dark);
    background: var(--ppt-white);
    outline: none;
}
.ppt-select:focus {
    border-color: var(--ppt-orange);
}

/* --- WORKSPACE --- */
.ppt-workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
    position: relative;
}

.ppt-left-panel {
    width: 260px;
    background-color: var(--ppt-white);
    border-right: 1px solid var(--ppt-border);
    display: flex;
    flex-direction: column;
    box-shadow: 2px 0 8px rgba(0,0,0,0.04);
    z-index: 5;
    flex-shrink: 0;
    transition: background-color 0.25s ease;
}

.ppt-left-panel.dppt-left {
    width: 360px;
    min-width: 260px;
    max-width: 820px;
    transition: width 0.22s ease, min-width 0.22s ease, background-color 0.25s ease;
}

.ppt-left-panel.dppt-left.dppt-collapsed {
    width: 0 !important;
    min-width: 0 !important;
    border-right: 0;
    overflow: hidden;
}

.ppt-right-panel {
    flex: 1;
    background-color: var(--ppt-border);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.ppt-canvas-area {
    flex: 1;
    overflow: auto;
    padding: 16px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    position: relative;
}

/* --- GRIDLINES & RULER --- */
.ppt-canvas-area.show-gridlines::before {
    content: '';
    position: absolute;
    inset: 0;
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(0,0,0,0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,0.04) 1px, transparent 1px);
    pointer-events: none;
    z-index: 1;
}

body.ppt-dark-mode .ppt-canvas-area.show-gridlines::before {
    background-image: 
        linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
}

/* Slide Size Presets */
.dppt-stage {
    background: white;
    box-shadow: 0 6px 36px rgba(0,0,0,0.15);
    border: 1px solid var(--ppt-border);
    position: relative;
    z-index: 2;
    overflow: hidden;
    width: var(--slide-width);
    height: var(--slide-height);
    transform-origin: center center;
    flex-shrink: 0;
}

.dppt-stage.aspect-4-3 {
    --slide-width: 800px;
    --slide-height: 600px;
}

/* Authentic MS PowerPoint Slide Placeholders */
.ppt-placeholder {
    border: 1.5px dashed transparent;
    border-radius: 2px;
    padding: 8px 12px;
    margin: 4px 0;
    min-height: 1.8em;
    background: transparent;
    color: var(--ppt-text-dark);
    cursor: text;
    transition: border 0.1s, background-color 0.1s;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    position: relative;
    outline: none !important;
}

/* Show dashed border only when empty, like PowerPoint */
.ppt-placeholder[data-empty="true"] {
    border: 1.5px dashed #a19f9d !important;
}

.ppt-placeholder:focus, .ppt-placeholder.ph-selected {
    border: 1.5px solid #a19f9d !important;
    background-color: transparent !important;
    z-index: 10;
}

/* Interactive Resizable Shapes */
.dppt-shape {
    position: absolute;
    cursor: move;
    border: 1.5px solid transparent;
    user-select: none;
    box-sizing: border-box;
}

.dppt-shape:hover {
    border: 1.5px dashed #0078d4;
}

.dppt-shape.sel {
    border: 1.8px solid #0078d4;
    box-shadow: 0 0 8px rgba(0, 120, 212, 0.25);
}

/* Deletion Button on active shapes */
.dppt-shape .dppt-sd {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #ef4444;
    color: #fff;
    border: none;
    font-size: 8px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.dppt-shape.sel .dppt-sd {
    display: flex;
}

/* Resize transform handle */
.dppt-shape .dppt-sr {
    position: absolute;
    bottom: -5px;
    right: -5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #0078d4;
    border: 2px solid white;
    cursor: nwse-resize;
    display: none;
    z-index: 10;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.dppt-shape.sel .dppt-sr {
    display: block;
}

/* FontAwesome icons in editor shapes */
.dppt-shape i.fa-icon-elem {
    font-size: 80%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* --- STATUS BAR --- */
.ppt-status-bar {
    height: 32px;
    background-color: var(--ppt-orange);
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    font-size: 12px;
    flex-shrink: 0;
    z-index: 10;
    user-select: none;
}

/* Thumbnail outline design */
.dppt-th {
    flex-shrink: 0;
    width: 130px;
    height: 78px;
    background: var(--ppt-white);
    border: 2px solid var(--ppt-border);
    border-radius: 4px;
    position: relative;
    cursor: pointer;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 1px 4px rgba(0,0,0,0.08);
    transition: all 0.15s;
    user-select: none;
}
.dppt-th:hover {
    border-color: var(--ppt-accent-blue);
    transform: translateY(-1px);
    box-shadow: 0 3px 8px rgba(0,0,0,0.12);
}
.dppt-th.on {
    border-color: var(--ppt-orange);
    box-shadow: 0 0 0 2px rgba(210, 71, 38, 0.2);
}

.dppt-th-ov {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3px;
    background: rgba(0,0,0,0.01);
}
.dppt-th-lbl {
    font-size: 7px;
    font-weight: 700;
    color: var(--ppt-text-dark);
    text-align: center;
    line-height: 1.1;
}

.dppt-th-n {
    position: absolute;
    bottom: 2px;
    left: 4px;
    font-size: 8px;
    font-weight: 800;
    color: var(--ppt-text-muted);
}

/* Layout selection grid picker */
.ppt-layout-picker-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    padding: 8px;
    width: 250px;
    background: white;
    border: 1px solid var(--ppt-border);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    position: absolute;
    z-index: 100;
    display: none;
}
.ppt-layout-picker-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 6px;
    border-radius: 6px;
    cursor: pointer;
    border: 1px solid transparent;
    background: #fdfdfd;
}
.ppt-layout-picker-item:hover {
    border-color: var(--ppt-orange);
    background: var(--ppt-orange-light);
}
.ppt-layout-picker-item i {
    font-size: 14px;
    color: var(--ppt-text-muted);
}
.ppt-layout-picker-item span {
    font-size: 9px;
    font-weight: 600;
    color: var(--ppt-text-dark);
}

/* --- THEME GALLERY presets --- */
.ppt-theme-gallery {
    display: flex;
    gap: 6px;
    background: var(--ppt-white);
    border: 1px solid var(--ppt-border);
    padding: 4px;
    border-radius: 4px;
    overflow-x: auto;
    width: 240px;
    height: 60px;
}
.ppt-theme-item {
    min-width: 46px;
    height: 100%;
    border: 1px solid var(--ppt-border);
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: #ffffff;
}
.ppt-theme-item.active-theme {
    border-color: var(--ppt-orange);
    box-shadow: 0 0 0 2px rgba(210, 71, 38, 0.15);
}
.ppt-theme-top {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 11px;
}
.ppt-theme-bot {
    height: 8px;
    display: flex;
}
.ppt-theme-color {
    flex: 1;
    height: 100%;
}

/* Shape elements insertion selection dropdown */
.ppt-shapes-picker {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 4px;
    padding: 8px;
    width: 180px;
    background: white;
    border: 1px solid var(--ppt-border);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    position: absolute;
    z-index: 100;
    display: none;
}
.ppt-shape-picker-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--ppt-border);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ppt-text-dark);
    font-size: 12px;
}
.ppt-shape-picker-btn:hover {
    border-color: var(--ppt-orange);
    background: var(--ppt-orange-light);
    color: var(--ppt-orange);
}

/* Color palettes picker dropdown styling */
.ppt-color-picker-btn {
    border: 1px solid var(--ppt-border);
    border-radius: 4px;
    width: 26px;
    height: 26px;
    padding: 0;
    cursor: pointer;
}

/* RULER styles */
.ppt-ruler-h {
    position: absolute;
    top: 26px;
    left: 32px;
    right: 32px;
    height: 6px;
    background: repeating-linear-gradient(to right, #a19f9d, #a19f9d 2px, transparent 2px, transparent 20px);
    opacity: 0.6;
    pointer-events: none;
    z-index: 1;
    display: none;
}
.ppt-ruler-v {
    position: absolute;
    top: 32px;
    left: 26px;
    bottom: 32px;
    width: 6px;
    background: repeating-linear-gradient(to bottom, #a19f9d, #a19f9d 2px, transparent 2px, transparent 20px);
    opacity: 0.6;
    pointer-events: none;
    z-index: 1;
    display: none;
}
.show-ruler .ppt-ruler-h, .show-ruler .ppt-ruler-v {
    display: block;
}

/* Interactive Pen drawing canvas inside Presentation Mode */
.dppt-pov {
    background: #000;
    z-index: 99999;
}
.dppt-pov canvas.slideshow-draw-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none; /* controlled dynamically */
    cursor: crosshair;
}

/* Presenter controls Floating Bar in Slideshow Mode */
.ppt-slideshow-control-bar {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(20, 20, 20, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 30px;
    padding: 6px 14px;
    backdrop-filter: blur(12px);
    z-index: 999999;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    user-select: none;
    transition: opacity 0.25s ease;
}
.ppt-slideshow-control-bar:hover {
    opacity: 1 !important;
}

.ppt-slideshow-btn {
    background: transparent;
    border: none;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    transition: background 0.15s;
}
.ppt-slideshow-btn:hover {
    background: rgba(255,255,255,0.15);
}
.ppt-slideshow-btn.active-tool {
    background: var(--ppt-orange);
    color: white;
    box-shadow: 0 0 8px rgba(210, 71, 38, 0.5);
}

.ppt-slideshow-sep {
    width: 1px;
    height: 20px;
    background: rgba(255,255,255,0.2);
}

.ppt-slideshow-lbl {
    color: rgba(255,255,255,0.8);
    font-size: 11px;
    font-weight: 700;
    min-width: 48px;
    text-align: center;
}

/* Custom virtual laser pointer cursor styling */
.laser-pointer-cursor {
    position: absolute;
    width: 14px;
    height: 14px;
    background-color: rgba(239, 68, 68, 0.95);
    border-radius: 50%;
    box-shadow: 0 0 16px 8px rgba(239, 68, 68, 0.9), 0 0 4px 2px #ffffff;
    pointer-events: none;
    z-index: 9999999;
    display: none;
    transform: translate(-50%, -50%);
}

/* Drawing pen color palette dots */
.pen-color-picker-dropdown {
    position: absolute;
    bottom: 44px;
    display: flex;
    gap: 5px;
    background: rgba(20, 20, 20, 0.9);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 6px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    display: none;
}
.pen-color-dot {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    cursor: pointer;
    border: 1.5px solid white;
}

/* TRANSITIONS ANIMATIONS CLASS DEFS */
.dppt-trans-fade .dppt-stage-wrapper { animation: dppt-tr-fade 0.5s ease-in-out forwards; }
.dppt-trans-slide .dppt-stage-wrapper { animation: dppt-tr-slide 0.5s cubic-bezier(0.1, 0.9, 0.2, 1) forwards; }
.dppt-trans-zoom .dppt-stage-wrapper { animation: dppt-tr-zoom 0.5s cubic-bezier(0.1, 0.9, 0.2, 1) forwards; }
.dppt-trans-push .dppt-stage-wrapper { animation: dppt-tr-push 0.5s cubic-bezier(0.1, 0.9, 0.2, 1) forwards; }
.dppt-trans-wipe .dppt-stage-wrapper { animation: dppt-tr-wipe 0.5s ease-out forwards; }
.dppt-trans-split .dppt-stage-wrapper { animation: dppt-tr-split 0.5s ease-out forwards; }
.dppt-trans-cover .dppt-stage-wrapper { animation: dppt-tr-cover 0.5s ease-out forwards; }
.dppt-trans-uncover .dppt-stage-wrapper { animation: dppt-tr-uncover 0.5s ease-out forwards; }
.dppt-trans-cube .dppt-stage-wrapper { animation: dppt-tr-cube 0.6s ease-in-out forwards; }

@keyframes dppt-tr-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes dppt-tr-slide { from { opacity: 0; transform: translateX(50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes dppt-tr-zoom { from { opacity: 0; transform: scale(0.85); } to { opacity: 1; transform: scale(1); } }
@keyframes dppt-tr-push { from { transform: translateY(100%); } to { transform: translateY(0); } }
@keyframes dppt-tr-wipe { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes dppt-tr-split { from { clip-path: inset(50% 0 50% 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes dppt-tr-cover { from { transform: translateX(100%); } to { transform: translateX(0); } }
@keyframes dppt-tr-uncover { from { transform: translateX(0); } to { transform: translateX(-100%); } }
@keyframes dppt-tr-cube {
    from { transform: rotateY(90deg) translateZ(100px); opacity: 0; }
    to { transform: rotateY(0deg) translateZ(0); opacity: 1; }
}

/* Custom Slide Elements Entrance / Emphasis / Exit animations */
@keyframes dppt-anim-fadein { from { opacity: 0; } to { opacity: 1; } }
@keyframes dppt-anim-bouncein { 
    0% { opacity: 0; transform: scale(0.3); } 
    50% { opacity: 0.9; transform: scale(1.05); } 
    70% { transform: scale(0.9); } 
    100% { opacity: 1; transform: scale(1); } 
}
@keyframes dppt-anim-zoomin { from { opacity: 0; transform: scale(0.6); } to { opacity: 1; transform: scale(1); } }
@keyframes dppt-anim-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes dppt-anim-slideup { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
@keyframes dppt-anim-slideleft { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: translateX(0); } }
@keyframes dppt-anim-flyin { from { opacity: 0; transform: translateY(100vh); } to { opacity: 1; transform: translateY(0); } }
@keyframes dppt-anim-wipe { from { clip-path: inset(100% 0 0 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes dppt-anim-pulse { 0% { transform: scale(1); } 50% { transform: scale(1.1); } 100% { transform: scale(1); } }
@keyframes dppt-anim-grow { 0% { transform: scale(1); } 100% { transform: scale(1.2); } }
@keyframes dppt-anim-fadeout { from { opacity: 1; } to { opacity: 0; } }
@keyframes dppt-anim-flyout { from { opacity: 1; transform: translateY(0); } to { opacity: 0; transform: translateY(100vh); } }
@keyframes dppt-anim-zoomout { from { opacity: 1; transform: scale(1); } to { opacity: 0; transform: scale(0.5); } }

.dppt-anim-fadein { animation: dppt-anim-fadein 0.6s ease forwards; }
.dppt-anim-bouncein { animation: dppt-anim-bouncein 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards; }
.dppt-anim-zoomin { animation: dppt-anim-zoomin 0.5s ease-out forwards; }
.dppt-anim-spin { animation: dppt-anim-spin 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards; }
.dppt-anim-slideup { animation: dppt-anim-slideup 0.5s ease-out forwards; }
.dppt-anim-slideleft { animation: dppt-anim-slideleft 0.5s ease-out forwards; }
.dppt-anim-flyin { animation: dppt-anim-flyin 0.6s cubic-bezier(0.1, 0.9, 0.2, 1) forwards; }
.dppt-anim-wipe { animation: dppt-anim-wipe 0.6s ease-out forwards; }
.dppt-anim-pulse { animation: dppt-anim-pulse 0.5s ease-in-out; }
.dppt-anim-grow { animation: dppt-anim-grow 0.6s ease forwards; }
.dppt-anim-fadeout { animation: dppt-anim-fadeout 0.5s ease forwards; }
.dppt-anim-flyout { animation: dppt-anim-flyout 0.5s ease-in forwards; }
.dppt-anim-zoomout { animation: dppt-anim-zoomout 0.5s ease-in forwards; }

.dppt-animation-badge {
    position: absolute;
    top: 4px;
    left: 4px;
    background: #0078d4;
    color: white;
    font-size: 7px;
    font-weight: 800;
    border-radius: 50%;
    width: 12px;
    height: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 8;
}

/* Collaborative slide notes box */
.ppt-notes-pane {
    height: 110px;
    background-color: var(--ppt-white);
    border-top: 1px solid var(--ppt-border);
    display: flex;
    flex-direction: column;
    padding: 8px 16px;
    flex-shrink: 0;
    transition: all 0.2s ease;
}
.ppt-notes-header {
    font-size: 11px;
    font-weight: 700;
    color: var(--ppt-text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.ppt-notes-textarea {
    flex: 1;
    border: 1px solid var(--ppt-border);
    border-radius: 4px;
    padding: 6px 10px;
    font-size: 12px;
    resize: none;
    outline: none;
    background: transparent;
    color: var(--ppt-text-dark);
}
.ppt-notes-textarea:focus {
    border-color: var(--ppt-orange);
    background: var(--ppt-white);
}

/* Smart AI Suggestions Toolbar */
.ppt-ai-sidebar {
    padding: 16px;
    background: linear-gradient(135deg, #fdf6f0 0%, #fffbf0 100%);
    border-bottom: 1.5px solid var(--ppt-border);
}
.ppt-ai-btn {
    background: linear-gradient(135deg, var(--ppt-orange), #ff6b35);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    box-shadow: 0 4px 12px rgba(210, 71, 38, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: 0.15s;
}
.ppt-ai-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(210, 71, 38, 0.3);
}

/* Dotted placeholders custom classes inside stages wrapper */
.dppt-stage-wrapper .ppt-placeholder[data-empty="true"] {
    border: 1.5px dashed #cbd5e1 !important;
}

/* Pre-formatted Table theme Styles */
table.dppt-st.table-style-light td, table.dppt-st.table-style-light th {
    border: 1px solid #e1dfdd;
}
table.dppt-st.table-style-light th {
    background-color: #f3f2f1;
    color: #323130;
}

table.dppt-st.table-style-medium tr:nth-child(even) {
    background-color: rgba(210, 71, 38, 0.05);
}
table.dppt-st.table-style-medium th {
    background-color: var(--ppt-orange);
    color: white;
}

table.dppt-st.table-style-dark tr:nth-child(even) {
    background-color: #252423;
}
table.dppt-st.table-style-dark tr:nth-child(odd) {
    background-color: #323130;
}
table.dppt-st.table-style-dark td {
    border: 1px solid #484644;
    color: #f3f2f1;
}
table.dppt-st.table-style-dark th {
    background-color: #111;
    color: white;
    border: 1px solid #484644;
}

/* Dialog and popovers override */
.dppt-m {
    background-color: var(--ppt-white) !important;
    color: var(--ppt-text-dark) !important;
}
.dppt-m h2 {
    color: var(--ppt-text-dark) !important;
    border-bottom-color: var(--ppt-border) !important;
}
.dppt-m kbd {
    background-color: var(--ppt-bg-gray) !important;
    color: var(--ppt-text-dark) !important;
    border-color: var(--ppt-border) !important;
}

@media(max-width:768px){
    .ppt-left-panel { width: 100%; height: 35vh; border-right: none; border-bottom: 1px solid var(--ppt-border); }
    .dppt-stage { width: 100% !important; height: auto !important; aspect-ratio: 16/9; transform: none !important; }
}

/* ── New Ribbon: Tabs row flex layout ──────────────────────────────────── */

/* ── Ribbon Shapes Mini Gallery ──────────────────────────────────────────*/
.ppt-ribbon-shapes-gallery {
    position: relative;
}
.ppt-gallery-item {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    height: 24px;
    border: 1px solid transparent;
    border-radius: 3px;
    transition: background 0.1s, border-color 0.1s;
}
.ppt-gallery-item:hover {
    background: #fff7ed !important;
    border-color: var(--ppt-orange) !important;
}
.ppt-gallery-scroll-btn {
    color: var(--ppt-text-muted);
    transition: color 0.15s;
}
.ppt-gallery-scroll-btn:hover {
    color: var(--ppt-orange);
}

/* ── Ribbon "Tell me" search box ─────────────────────────────────────── */
#dppt-ribbon-search::placeholder {
    color: rgba(255,255,255,0.65);
}
#dppt-ribbon-search:focus {
    background: rgba(255,255,255,0.25) !important;
}

/* ── Find & Replace Dialog ──────────────────────────────────────────── */
#dppt-find-dialog {
    animation: dppt-anim-fadeindlg 0.18s ease;
}
@keyframes dppt-anim-fadeindlg {
    from { opacity: 0; transform: translateX(-50%) translateY(-12px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}
#dppt-find-input:focus,
#dppt-replace-input:focus {
    border-color: var(--ppt-orange) !important;
    box-shadow: 0 0 0 2px rgba(210,71,38,0.12);
}

/* ── Home Ribbon: active tool highlight improvement ──────────────────── */
.ppt-tool-btn:active {
    background-color: rgba(0,0,0,0.08) !important;
    transform: scale(0.97);
}

/* ── Format painter cursor feedback ─────────────────────────────────── */
body.fmt-painter-active * {
    cursor: crosshair !important;
}

/* ── Ribbon group separators improved ───────────────────────────────── */
.ppt-ribbon-group + .ppt-ribbon-group {
    margin-left: 2px;
}

/* ── Ribbon panel scroll smoothness ────────────────────────────────── */
.ppt-ribbon-panel {
    scroll-behavior: smooth;
}

/* ── SmartArt shapes label readability ──────────────────────────────── */
.dppt-shape .dppt-ti {
    word-break: break-word;
    overflow: hidden;
}

/* ── Dark mode: find dialog ─────────────────────────────────────────── */
body.ppt-dark-mode #dppt-find-dialog {
    background: #252423 !important;
    border-color: #3b3a39 !important;
    color: #f3f2f1 !important;
}
body.ppt-dark-mode #dppt-find-input,
body.ppt-dark-mode #dppt-replace-input {
    background: #323130;
    color: #f3f2f1;
    border-color: #484644;
}

/* ── Dark mode: gallery ─────────────────────────────────────────────── */
body.ppt-dark-mode .ppt-ribbon-shapes-gallery {
    background: #323130 !important;
    border-color: #484644 !important;
}
body.ppt-dark-mode .ppt-gallery-item:hover {
    background: rgba(210,71,38,0.15) !important;
}

/* ── Ribbon Gallery Large Button styles ─────────────────────────────── */
.ppt-gallery-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 54px;
    height: 50px;
    border: 1px solid transparent;
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    transition: 0.1s;
    flex-shrink: 0;
}
.ppt-gallery-btn i {
    font-size: 16px;
    color: var(--ppt-text-dark);
}
.ppt-gallery-btn span {
    font-size: 9px;
    margin-top: 2px;
    color: var(--ppt-text-dark);
}
.ppt-gallery-btn:hover {
    background: var(--ppt-orange-light);
    border-color: var(--ppt-orange);
}
.ppt-gallery-btn.active {
    background: #ffedd5 !important;
    border-color: #ea580c !important;
    outline: none;
}
body.ppt-dark-mode .ppt-gallery-btn i {
    color: #f3f2f1;
}
body.ppt-dark-mode .ppt-gallery-btn span {
    color: #f3f2f1;
}
body.ppt-dark-mode .ppt-gallery-btn:hover {
    background: rgba(210,71,38,0.15) !important;
    border-color: var(--ppt-orange) !important;
}
body.ppt-dark-mode .ppt-gallery-btn.active {
    background: rgba(210,71,38,0.25) !important;
    border-color: var(--ppt-orange) !important;
}

/* ── Slide Sorter Grid Layout ───────────────────────────────────────── */
#dppt-slide-sorter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
    padding: 24px;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    align-content: start;
    background: var(--ppt-bg-gray);
}
.ppt-sorter-card {
    background: var(--ppt-white);
    border: 2px solid var(--ppt-border);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 10px rgba(0,0,0,0.06);
    display: flex;
    flex-direction: column;
    height: 140px;
}
.ppt-sorter-card:hover {
    transform: translateY(-2px);
    border-color: var(--ppt-orange);
    box-shadow: 0 6px 16px rgba(0,0,0,0.12);
}
.ppt-sorter-card.active {
    border-color: var(--ppt-orange);
    outline: 2px solid var(--ppt-orange);
    box-shadow: 0 0 0 3px rgba(210, 71, 38, 0.25);
}
.ppt-sorter-card-preview {
    flex: 1;
    padding: 12px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-family: inherit;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--ppt-border);
}
.ppt-sorter-card-title {
    font-size: 11px;
    font-weight: 700;
    line-height: 1.3;
    max-height: 2.6em;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.ppt-sorter-card-layout {
    font-size: 8px;
    font-weight: 600;
    color: var(--ppt-text-muted);
    text-transform: uppercase;
}
.ppt-sorter-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    background: rgba(0,0,0,0.02);
}
.ppt-sorter-card-num {
    font-size: 11px;
    font-weight: 700;
    color: var(--ppt-text-muted);
}
.ppt-sorter-card-actions {
    display: flex;
    gap: 4px;
}
.ppt-sorter-card-actions button {
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 10px;
    color: var(--ppt-text-muted);
    padding: 2px 4px;
    border-radius: 3px;
    transition: background 0.15s;
}
.ppt-sorter-card-actions button:hover {
    background: rgba(0,0,0,0.05);
    color: var(--ppt-orange);
}
.ppt-sorter-card-actions button.danger:hover {
    background: #fef2f2;
    color: #ef4444;
}

/* ── Slide Sorter View Grid ────────────────────────────────────────────── */
.dppt-slide-sorter {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    padding: 20px;
    width: 100%;
    height: 100%;
    overflow-y: auto;
    background: #f1f5f9;
}
.ppt-dark-mode .dppt-slide-sorter {
    background: #0f172a;
}
.dppt-sorter-thumb {
    background: #fff;
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.ppt-dark-mode .dppt-sorter-thumb {
    background: #1e293b;
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}
.dppt-sorter-thumb:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.1);
}
.dppt-sorter-thumb.dppt-sorter-active {
    border-color: var(--ppt-orange);
    background: #fff8f6;
}
.ppt-dark-mode .dppt-sorter-thumb.dppt-sorter-active {
    background: #2a1b18;
}
.dppt-sorter-preview {
    width: 100%;
    aspect-ratio: 16/9;
    border: 1px solid var(--ppt-border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}
.dppt-sorter-title {
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    padding: 10px;
}
.dppt-sorter-num {
    margin-top: 8px;
    font-size: 12px;
    font-weight: 700;
    color: var(--ppt-text-muted);
}
.dppt-sorter-hidden-badge {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

/* ── New Animations & Transitions ─────────────────────────────────────── */

/* Transitions */
.dppt-trans-push { animation: pptPushIn 0.5s ease-out; }
@keyframes pptPushIn { from { transform: translateY(100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.dppt-trans-wipe { animation: pptWipeIn 0.5s ease-in-out; clip-path: polygon(0 0, 0 0, 0 100%, 0% 100%); }
@keyframes pptWipeIn { to { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); } }

.dppt-trans-split { animation: pptSplitIn 0.5s ease-out; }
@keyframes pptSplitIn { from { transform: scaleX(0); opacity:0; } to { transform: scaleX(1); opacity:1; } }

.dppt-trans-cover { animation: pptCoverIn 0.5s ease-out; }
@keyframes pptCoverIn { from { transform: translateX(100%); box-shadow:-10px 0 20px rgba(0,0,0,0.5); } to { transform: translateX(0); box-shadow:0 0 0 transparent; } }

.dppt-trans-uncover { animation: pptUncoverIn 0.5s ease-out; }
@keyframes pptUncoverIn { from { transform: translateX(0); z-index: -1; } to { transform: translateX(0); z-index: -1; } }

.dppt-trans-cube { animation: pptCubeIn 0.6s cubic-bezier(0.25, 1, 0.5, 1); transform-origin: left center; }
@keyframes pptCubeIn { from { transform: rotateY(-90deg) translateZ(50vw); opacity: 0; } to { transform: rotateY(0deg) translateZ(0); opacity: 1; } }

/* Animations */
.anim-bouncein { animation: pptBounceIn var(--anim-dur, 0.5s) cubic-bezier(0.68, -0.55, 0.265, 1.55) var(--anim-del, 0s) both; }
@keyframes pptBounceIn { 0% { transform: scale(0.3); opacity: 0; } 50% { transform: scale(1.05); opacity: 1; } 70% { transform: scale(0.9); } 100% { transform: scale(1); opacity: 1; } }

.anim-zoomin { animation: pptZoomIn var(--anim-dur, 0.5s) ease-out var(--anim-del, 0s) both; }
@keyframes pptZoomIn { from { transform: scale(0); opacity: 0; } to { transform: scale(1); opacity: 1; } }

.anim-spin { animation: pptSpin var(--anim-dur, 0.5s) linear var(--anim-del, 0s) both; }
@keyframes pptSpin { from { transform: rotate(0deg); opacity: 0; } to { transform: rotate(360deg); opacity: 1; } }

.anim-slideup { animation: pptSlideUp var(--anim-dur, 0.5s) ease-out var(--anim-del, 0s) both; }
@keyframes pptSlideUp { from { transform: translateY(50px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.anim-slideleft { animation: pptSlideLeft var(--anim-dur, 0.5s) ease-out var(--anim-del, 0s) both; }
@keyframes pptSlideLeft { from { transform: translateX(50px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

.anim-flyin { animation: pptFlyIn var(--anim-dur, 0.5s) cubic-bezier(0.215, 0.61, 0.355, 1) var(--anim-del, 0s) both; }
@keyframes pptFlyIn { from { transform: translate(-200px, 200px); opacity: 0; } to { transform: translate(0, 0); opacity: 1; } }

.anim-wipein { animation: pptWipeInAnim var(--anim-dur, 0.5s) ease-in-out var(--anim-del, 0s) both; clip-path: polygon(0 0, 0 0, 0 100%, 0% 100%); }
@keyframes pptWipeInAnim { to { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); opacity: 1; } }

.anim-pulse { animation: pptPulse var(--anim-dur, 0.5s) ease-in-out var(--anim-del, 0s) both; }
@keyframes pptPulse { 0% { transform: scale(1); } 50% { transform: scale(1.1); } 100% { transform: scale(1); } }

.anim-growshrink { animation: pptGrowShrink var(--anim-dur, 0.5s) ease-in-out var(--anim-del, 0s) both; }
@keyframes pptGrowShrink { 0% { transform: scale(1); } 50% { transform: scale(1.2); } 100% { transform: scale(0.8); } }

.anim-fadeout { animation: pptFadeOut var(--anim-dur, 0.5s) ease-out var(--anim-del, 0s) both; }
@keyframes pptFadeOut { from { opacity: 1; } to { opacity: 0; } }

.anim-flyout { animation: pptFlyOut var(--anim-dur, 0.5s) ease-in var(--anim-del, 0s) both; }
@keyframes pptFlyOut { from { transform: translate(0, 0); opacity: 1; } to { transform: translate(200px, -200px); opacity: 0; } }
/* MS Word & PPT Enhancements */
.word-ribbon { background-color: #2b579a; color: white; padding: 10px 16px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); flex-shrink: 0; }
.word-ribbon-title { font-weight: 600; font-size: 14px; display: flex; align-items: center; gap: 8px; }
.word-ribbon-actions { display: flex; gap: 8px; }
.word-ribbon-btn { background: rgba(255,255,255,0.1); border: 1px solid rgba(255,255,255,0.2); color: white; padding: 6px 12px; border-radius: 4px; cursor: pointer; font-size: 12px; display: flex; align-items: center; gap: 6px; transition: background 0.2s; font-weight: 600; }
.word-ribbon-btn:hover { background: rgba(255,255,255,0.2); }
.word-page-container { background: #e1e1e1; padding: 10px; flex: 1; overflow-y: auto; display: flex; justify-content: center; }
.word-page { background: white; width: 100%; max-width: 800px; min-height: 1056px; padding: 25px 20px; box-shadow: 0 4px 12px rgba(0,0,0,0.15); border: 1px solid #ccc; }
.dppt-doc-wrap { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

/* Panel Resizer */
.panel-resizer {
    width: 6px;
    background: #e1dfdd;
    cursor: col-resize;
    z-index: 10;
    transition: background 0.2s;
    border-right: 1px solid var(--ppt-border);
}
.panel-resizer:hover, .panel-resizer:active {
    background: #c8c6c4;
}

/* --- Placeholder Quick Insert Toolbar --- */
.ppt-ph-insert-toolbar {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    background: rgba(255, 255, 255, 0.7);
    padding: 10px;
    border-radius: 8px;
    pointer-events: none;
    opacity: 0.6;
    transition: opacity 0.2s;
    z-index: 5;
    user-select: none;
}
.ppt-placeholder:hover .ppt-ph-insert-toolbar {
    opacity: 1;
}
/* Hide toolbar when placeholder is focused (user is typing) */
.ppt-placeholder:focus .ppt-ph-insert-toolbar {
    display: none !important;
}
/* Keep toolbar visible when placeholder is selected — overrides :focus and [data-empty] so button clicks work */
.ppt-placeholder.ph-selected[data-field] .ppt-ph-insert-toolbar {
    display: grid !important;
}
.ppt-ph-insert-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    pointer-events: auto;
    color: #605e5c;
    font-size: 16px;
    transition: background 0.1s, color 0.1s;
}
.ppt-ph-insert-btn:hover {
    background: #e1dfdd;
    color: #0078d4;
}
.ppt-placeholder[data-empty="false"] .ppt-ph-insert-toolbar {
    display: none !important;
}

/* --- Floating AI Suggestions Button --- */
#dppt-ai-floating-btn {
    position: absolute;
    display: none;
    align-items: center;
    gap: 6px;
    background: linear-gradient(135deg, #0078d4, #2b88d8);
    color: white;
    border: none;
    border-radius: 20px;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 120, 212, 0.3);
    z-index: 1000;
    transition: transform 0.15s, box-shadow 0.15s;
}
#dppt-ai-floating-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 6px 16px rgba(0, 120, 212, 0.4);
}

/* ══════════════════════════════════════════════════════════════════════
   PPT EDITOR — MOBILE OPTIMIZED LAYOUT
   ══════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    /* Title bar: compact */
    .ppt-titlebar {
        height: 40px !important;
        padding: 0 8px !important;
        gap: 8px !important;
    }
    .ppt-title-left { gap: 8px !important; }
    .ppt-back-btn {
        padding: 4px 8px !important;
        font-size: 0.78rem !important;
    }
    .ppt-file-name {
        font-size: 0.8rem !important;
        max-width: 120px !important;
        overflow: hidden !important;
        text-overflow: ellipsis !important;
        white-space: nowrap !important;
    }
    .ppt-titlebar-right { gap: 4px !important; }
    .ppt-toolbar-btn {
        width: 28px !important;
        height: 28px !important;
        font-size: 0.8rem !important;
        padding: 0 !important;
    }

    /* Ribbon: scrollable tabs, compact body */
    .ppt-ribbon-tabs-row {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        flex-wrap: nowrap !important;
    }
    .ppt-ribbon-tabs-row::-webkit-scrollbar { display: none !important; }
    .ppt-ribbon-tab {
        white-space: nowrap !important;
        padding: 4px 10px !important;
        font-size: 0.75rem !important;
    }
    .ppt-ribbon-body {
        padding: 4px 6px !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch !important;
        scrollbar-width: none !important;
        min-height: 0 !important;
        max-height: 56px !important;
    }
    .ppt-ribbon-body::-webkit-scrollbar { display: none !important; }
    .ppt-ribbon-group {
        flex-shrink: 0 !important;
        gap: 2px !important;
        padding: 0 4px !important;
    }
    .ppt-ribbon-btn {
        min-width: 28px !important;
        height: 28px !important;
        font-size: 0.75rem !important;
        padding: 2px 4px !important;
    }
    .ppt-ribbon-btn-label { display: none !important; }

    /* Workspace: slide panel top, editing area below */
    .ppt-workspace {
        flex-direction: column !important;
        flex: 1 1 0 !important;
        min-height: 0 !important;
        overflow: hidden !important;
    }
    .ppt-left-panel {
        width: 100% !important;
        height: 90px !important;
        min-height: 90px !important;
        max-height: 90px !important;
        flex-direction: row !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        -webkit-overflow-scrolling: touch !important;
        border-right: none !important;
        border-bottom: 1px solid var(--ppt-border) !important;
        padding: 4px !important;
        gap: 4px !important;
    }
    .ppt-slide-thumb {
        flex-shrink: 0 !important;
        width: 110px !important;
        height: 80px !important;
    }
    /* Main editing canvas area */
    .ppt-main-area, .ppt-center {
        flex: 1 1 0 !important;
        min-height: 0 !important;
        overflow: hidden !important;
        padding: 6px !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
    }
    .dppt-stage-wrapper {
        width: 100% !important;
        overflow: auto !important;
        -webkit-overflow-scrolling: touch !important;
    }
    .dppt-stage {
        width: 100% !important;
        height: auto !important;
        aspect-ratio: 16/9 !important;
        transform: none !important;
        max-width: 100% !important;
    }
    /* Right panel: hidden on mobile to save space */
    .ppt-right-panel { display: none !important; }
    /* Notes and status bar: compact */
    .ppt-notes-bar { display: none !important; }
    .ppt-statusbar {
        height: 22px !important;
        font-size: 0.68rem !important;
        padding: 0 8px !important;
    }
}