/* ==========================================================================
   Presentation Engine - Styles
   A cinematic, warm aesthetic for immersive presentations
   ========================================================================== */

:root {
    /* Color palette - warm charcoal with amber accents */
    --bg-deep: #0d0c0f;
    --bg-main: #161418;
    --bg-elevated: #1e1b21;
    --bg-surface: #272329;
    
    --text-primary: #f5f0e8;
    --text-secondary: #a39e94;
    --text-muted: #6b665c;
    
    --accent-primary: #e8a849;
    --accent-secondary: #d4763a;
    --accent-glow: rgba(232, 168, 73, 0.15);
    
    --cue-highlight: #4ecdc4;
    --cue-emphasis: #ff6b6b;
    --cue-info: #74b9ff;
    
    /* Typography */
    --font-display: 'Outfit', system-ui, sans-serif;
    --font-body: 'Crimson Pro', Georgia, serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2.5rem;
    --space-2xl: 4rem;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Safe-area insets (iOS) */
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-right: env(safe-area-inset-right, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
    --safe-left: env(safe-area-inset-left, 0px);
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: auto;
    overflow-y: auto;
    
    /* Subtle grain texture */
    background-image: 
        radial-gradient(ellipse at 50% 0%, rgba(232, 168, 73, 0.03) 0%, transparent 50%),
        url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-blend-mode: normal, overlay;
}

body[data-page="player"] {
    overflow: hidden;
}

/* ==========================================================================
   Presentation Container
   ========================================================================== */

.presentation-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    height: 100dvh;
    max-height: 100vh;
    max-height: 100dvh;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-lg);
    gap: var(--space-lg);
    overflow: hidden;
}

html[data-export="1"] body,
body[data-export="1"] {
    background: #0b0c10;
}

html[data-export="1"] .presentation-container,
body[data-export="1"] .presentation-container {
    max-width: none;
    padding: 0;
    gap: 0;
}

html[data-export="1"] .presentation-header,
html[data-export="1"] .controls-bar,
html[data-export="1"] .segment-indicators,
body[data-export="1"] .presentation-header,
body[data-export="1"] .controls-bar,
body[data-export="1"] .segment-indicators {
    display: none;
}

html[data-export="1"] .stage,
body[data-export="1"] .stage {
    border-radius: 0;
    box-shadow: none;
}

#playerPage[data-layout="shorts"] .presentation-container {
    align-items: center;
    overflow-y: auto;
}

#playerPage[data-layout="shorts"] .stage {
    flex: 1 1 auto;
    width: min(420px, 92vw);
    aspect-ratio: 9 / 16;
    height: auto;
    max-height: calc(100vh - 280px);
}

#playerPage[data-layout="shorts"] .text-content {
    padding: var(--space-lg);
}

#playerPage[data-layout="book"] .stage {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-rows: 1fr auto;
    gap: 0;
}

#playerPage[data-layout="book"] .text-content {
    grid-column: 1 / 2;
    text-align: left;
    align-items: flex-start;
    padding: var(--space-xl);
}

#playerPage[data-layout="book"] .segment-indicators {
    grid-column: 1 / 3;
}

#playerPage[data-layout="book"] .background-layer {
    width: 50%;
    left: auto;
    right: 0;
}

#playerPage[data-layout="book"] .background-overlay {
    background: linear-gradient(
        90deg,
        rgba(13, 12, 15, var(--overlay-top, 0.7)) 0%,
        rgba(13, 12, 15, var(--overlay-mid, 0.45)) 40%,
        rgba(13, 12, 15, var(--overlay-bottom, 0.2)) 100%
    );
}

#playerPage[data-layout="book-fit"] .stage {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    grid-template-rows: 1fr auto;
    gap: 0;
}

#playerPage[data-layout="book-fit"] .text-content {
    grid-column: 1 / 2;
    text-align: left;
    align-items: flex-start;
    padding: var(--space-xl);
}

#playerPage[data-layout="book-fit"] .segment-indicators {
    grid-column: 1 / 3;
}

#playerPage[data-layout="book-fit"] .background-layer {
    width: 50%;
    left: auto;
    right: 0;
    background: #ffffff;
}

#playerPage[data-layout="book-fit"] .background-image {
    object-fit: contain;
}

#playerPage[data-layout="book-fit"] .background-overlay {
    display: none;
}

#playerPage[data-layout="subtitles"] .text-content {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    transform: translateY(16px);
    max-height: 68%;
    padding: var(--space-md) var(--space-2xl) var(--space-xl);
    background: linear-gradient(
        180deg,
        rgba(13, 12, 15, 0) 0%,
        rgba(13, 12, 15, 0.65) 60%,
        rgba(13, 12, 15, 0.9) 100%
    );
    text-align: center;
    align-items: center;
}

#playerPage[data-layout="subtitles"] .slide-words {
    width: 100%;
    max-width: none;
    display: block;
    line-height: 1.6;
    max-height: calc(1.6em * 2);
    overflow: hidden;
    text-overflow: clip;
}

#playerPage[data-layout="subtitles"] .slide-container {
    width: 100%;
    max-width: 960px;
}

#playerPage[data-layout="subtitles"] .segment-indicators {
    position: absolute;
    left: 0;
    right: 0;
    bottom: var(--space-md);
    z-index: 12;
}

@keyframes subtitleDrift {
    0% {
        transform: translateY(0);
        opacity: 1;
    }
    85% {
        transform: translateY(-6px);
        opacity: 1;
    }
    100% {
        transform: translateY(-18px);
        opacity: 1;
    }
}

#playerPage[data-layout="slides"] .text-content {
    align-items: flex-start;
    text-align: left;
    padding: var(--space-2xl);
    max-width: 720px;
}

#playerPage[data-layout="slides"] .slide-words {
    text-align: left;
}

#playerPage[data-font="professional"] {
    --font-display: 'Outfit', system-ui, sans-serif;
    --font-body: 'Crimson Pro', Georgia, serif;
}

#playerPage[data-font="informal"] {
    --font-display: 'Outfit', system-ui, sans-serif;
    --font-body: 'Outfit', system-ui, sans-serif;
}

#playerPage[data-font="story"] {
    --font-display: 'Crimson Pro', Georgia, serif;
    --font-body: 'Crimson Pro', Georgia, serif;
}

/* ==========================================================================
   Header
   ========================================================================== */

.presentation-header {
    text-align: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.presentation-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.presentation-meta {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--space-xs);
    font-weight: 300;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ==========================================================================
   Stage Area
   ========================================================================== */

.stage {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--bg-main);
    border-radius: 16px;
    overflow: hidden;
    min-height: 0; /* Important for flex child scrolling */
    
    /* Subtle inner shadow for depth */
    box-shadow: 
        inset 0 2px 20px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.03);
}

.stage-fade {
    position: absolute;
    inset: 0;
    background: transparent;
    opacity: 0;
    pointer-events: none;
    z-index: 30;
    transition: opacity 500ms ease;
}

/* Visual Cue Layer */
.visual-cue-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 10;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.visual-cue-layer.active {
    opacity: 1;
}

/* Cue types */
.visual-cue-layer.cue-highlight {
    background: radial-gradient(
        ellipse at center,
        rgba(78, 205, 196, 0.1) 0%,
        transparent 70%
    );
    border: 2px solid var(--cue-highlight);
    border-radius: 16px;
}

.visual-cue-layer.cue-emphasis {
    animation: pulse-emphasis 0.6s ease-in-out;
}

@keyframes pulse-emphasis {
    0%, 100% { 
        box-shadow: inset 0 0 30px rgba(255, 107, 107, 0.2);
    }
    50% { 
        box-shadow: inset 0 0 60px rgba(255, 107, 107, 0.4);
    }
}

.visual-cue-layer.cue-focus {
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.6) 0%,
        transparent 30%,
        transparent 70%,
        rgba(0, 0, 0, 0.6) 100%
    );
}

.cue-indicator {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-elevated);
    border-radius: 100px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-smooth);
}

.visual-cue-layer.active .cue-indicator {
    opacity: 1;
    transform: translateY(0);
}

.cue-image {
    position: absolute;
    right: var(--space-lg);
    bottom: var(--space-lg);
    width: min(40%, 420px);
    max-height: 45%;
    object-fit: cover;
    border-radius: 16px;
    opacity: 0;
    transform: translateY(10px) scale(0.98);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

.cue-image.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Text Content Area */
.text-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding: var(--space-xl);
    overflow-y: auto;
    overflow-x: hidden;
    text-align: center;
    position: relative;
    z-index: 10;
    max-height: 100%;
}

/* ==========================================================================
   Slide-Based Display
   ========================================================================== */

.slide-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100%;
    padding: var(--space-xl);
    animation: slideIn 0.5s ease;
}

#playerPage.text-hidden .text-content {
    opacity: 0 !important;
    visibility: hidden !important;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-container.slide-heading {
    /* Headings get special treatment */
}

.slide-container.slide-heading .slide-words {
    font-size: calc(clamp(1.5rem, 4vw, 2.5rem) * var(--player-font-scale, 1));
    font-weight: 600;
    font-family: var(--player-font-family, var(--font-display));
}

.slide-words {
    max-width: 800px;
    text-align: center;
    line-height: 1.8;
}

.slide-heading-text .slide-word {
    font-size: calc(clamp(1.6rem, 4vw, 2.6rem) * var(--player-font-scale, 1));
    font-weight: 600;
    font-family: var(--player-font-family, var(--font-display));
}

.slide-heading-text {
    width: 100%;
    margin-bottom: var(--space-md);
    text-align: center;
}

.slide-body-text .slide-word {
    font-size: calc(clamp(1.1rem, 2.6vw, 1.6rem) * var(--player-font-scale, 1));
    font-family: var(--player-font-family, var(--font-body));
}

.slide-body-text.has-list {
    text-align: left;
    max-width: 720px;
}

.slide-word {
    display: inline;
    font-size: calc(clamp(1.25rem, 3vw, 1.75rem) * var(--player-font-scale, 1));
    color: rgba(255,255,255,var(--player-upcoming-alpha, 0.15));
    transition: color 0.15s ease, text-shadow 0.15s ease;
    font-family: var(--player-font-family, var(--font-body));
    text-shadow: var(--player-text-shadow, 0 4px 18px rgba(0, 0, 0, 0.6));
}

.slide-break {
    display: block;
    width: 100%;
    height: 0.8em;
}

.slide-word.visible {
    color: rgba(255,255,255,0.7);
}

.slide-word.current {
    color: var(--accent-primary);
    text-shadow: var(--player-text-shadow, 0 4px 18px rgba(0, 0, 0, 0.6)),
        0 0 30px var(--accent-primary);
}

.slide-word.past {
    color: rgba(255,255,255,0.85);
}

.slide-word.cue-highlight,
.slide-word.cue-highlight.current,
.slide-word.cue-highlight.past {
    color: #d4af37;
    text-shadow: var(--player-text-shadow, 0 4px 18px rgba(0, 0, 0, 0.6)),
        0 0 18px rgba(212, 175, 55, 0.6);
    font-weight: 600;
}

.slide-word.md-bold {
    font-weight: inherit !important;
    color: inherit !important;
}

.slide-word.md-italic {
    font-style: italic;
}

.slide-word.md-code {
    font-family: var(--font-mono);
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 6px;
    padding: 0 6px;
}

.slide-word.md-link {
    color: var(--accent-secondary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

.slide-word.md-list {
    color: rgba(255,255,255,0.9);
}

.slide-word.md-list-item {
    color: rgba(255,255,255,0.15);
}

.slide-word.md-list-item.visible {
    color: rgba(255,255,255,0.7);
}

.slide-word.md-list-item.current {
    color: var(--accent-primary);
}

.slide-word.md-list-item.past {
    color: rgba(255,255,255,0.9);
}

.slide-word.md-list-marker {
    display: inline-block;
    width: 1.3em;
    text-align: right;
    margin-right: 0.4em;
    color: rgba(255,255,255,0.15);
}

.slide-word.md-list-marker.visible {
    color: var(--accent-secondary);
}

/* Legacy segment mode (kept for compatibility) */
.text-segment {
    font-size: calc(clamp(1.25rem, 3vw, 1.75rem) * var(--player-font-scale, 1));
    line-height: 1.8;
    max-width: 48ch;
    color: var(--text-secondary);
    opacity: 0.4;
    transform: scale(0.95);
    transition: all var(--transition-smooth);
    margin-bottom: var(--space-lg);
    font-family: var(--player-font-family, var(--font-body));
    text-shadow: var(--player-text-shadow, 0 4px 18px rgba(0, 0, 0, 0.6));
}

.text-segment:last-child {
    margin-bottom: 0;
}

.text-segment.active {
    color: var(--text-primary);
    opacity: 1;
    transform: scale(1);
}

.text-segment.past {
    opacity: 0.3;
    transform: scale(0.92);
}

/* Highlighted words within text */
.text-segment .highlight {
    color: var(--accent-primary);
    font-weight: 600;
}

.text-segment .emphasis {
    font-style: italic;
    color: var(--cue-highlight);
}

/* Segment Indicators */
.segment-indicators {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: linear-gradient(to top, var(--bg-elevated), transparent);
}

.segment-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    opacity: 0.3;
    transition: all var(--transition-smooth);
    cursor: pointer;
}

.segment-dot:hover {
    opacity: 0.6;
    transform: scale(1.2);
}

.segment-dot.active {
    background: var(--accent-primary);
    opacity: 1;
    box-shadow: 0 0 12px var(--accent-glow);
}

.segment-dot.past {
    background: var(--accent-secondary);
    opacity: 0.6;
}

/* ==========================================================================
   Controls Bar
   ========================================================================== */

.controls-bar {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-elevated);
    border-radius: 12px;
    box-shadow: 
        0 -4px 20px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
    position: relative;
    transition: opacity 200ms ease, transform 200ms ease;
}

.audio-controls {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Control Buttons */
.control-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-deep);
    cursor: pointer;
    transition: all var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(232, 168, 73, 0.3);
}

.control-btn .btn-label {
    margin-left: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.control-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(232, 168, 73, 0.4);
}

.control-btn:active {
    transform: scale(0.98);
}

.control-btn.small {
    width: 36px;
    height: 36px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    box-shadow: none;
}

.control-btn.small:hover {
    background: var(--bg-main);
    color: var(--text-primary);
    box-shadow: none;
}

.icon {
    width: 20px;
    height: 20px;
}

.control-btn.small .icon {
    width: 16px;
    height: 16px;
}

.hidden {
    display: none !important;
}

/* Time Display */
.time-display {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-secondary);
    min-width: 90px;
}

.time-separator {
    margin: 0 var(--space-xs);
    opacity: 0.5;
}

/* Progress Container */
.progress-container {
    flex: 1;
    padding: 0 var(--space-sm);
}

.progress-track {
    position: relative;
    height: 6px;
    background: var(--bg-surface);
    border-radius: 3px;
    overflow: visible;
}

.progress-fill {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
    border-radius: 3px;
    width: 0%;
    transition: width 100ms linear;
}

.progress-slider {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 24px;
    transform: translateY(-50%);
    opacity: 0;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
}

.progress-track:hover .progress-slider {
    opacity: 1;
}

.progress-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Cue Markers on Timeline */
.cue-markers {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    pointer-events: none;
}

.cue-marker {
    position: absolute;
    top: -3px;
    width: 4px;
    height: 12px;
    background: var(--cue-highlight);
    border-radius: 2px;
    transform: translateX(-50%);
    opacity: 0.7;
}

.cue-marker.emphasis {
    background: var(--cue-emphasis);
}

.cue-marker.info {
    background: var(--cue-info);
}

/* Secondary Controls */
.secondary-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.volume-slider {
    width: 80px;
    height: 4px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-surface);
    border-radius: 2px;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    background: var(--text-secondary);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.volume-slider:hover::-webkit-slider-thumb {
    background: var(--text-primary);
}

.settings-slider {
    width: 160px;
}

.transition-control {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.transition-control label {
    font-weight: 500;
    letter-spacing: 0.02em;
}

.transition-control input {
    width: 70px;
    padding: 6px 8px;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: var(--bg-surface);
    color: var(--text-primary);
}

.transition-control input:focus {
    outline: 2px solid rgba(232, 168, 73, 0.4);
    outline-offset: 1px;
}

.transition-unit {
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    opacity: 0.7;
}

.layout-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px;
    border-radius: 999px;
    background: var(--bg-surface);
}

.layout-btn {
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-display);
    font-size: 0.8rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    padding: 6px 10px;
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.layout-btn.active,
.layout-btn:hover {
    background: rgba(232, 168, 73, 0.2);
    color: var(--text-primary);
}

/* ==========================================================================
   Load Overlay
   ========================================================================== */

.load-overlay {
    position: fixed;
    inset: 0;
    background: rgba(13, 12, 15, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    animation: fadeIn 0.4s ease;
}

.load-overlay.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.load-modal {
    background: var(--bg-elevated);
    padding: var(--space-2xl);
    border-radius: 20px;
    text-align: center;
    max-width: 420px;
    width: 90%;
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    animation: slideUp 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(30px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

.load-modal h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.load-modal p {
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
}

.presentation-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.presentation-option {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-surface);
    border: 1px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    text-align: left;
    transition: all var(--transition-smooth);
}

.presentation-option:hover {
    background: var(--bg-main);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.option-icon {
    font-size: 1.5rem;
}

.option-title {
    font-family: var(--font-display);
    font-weight: 500;
    color: var(--text-primary);
    display: block;
}

.option-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
    margin-top: 2px;
}

.upload-section {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: var(--space-lg);
}

.upload-btn {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background: transparent;
    border: 1px dashed var(--text-muted);
    border-radius: 8px;
    color: var(--text-muted);
    font-family: var(--font-display);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.upload-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* ==========================================================================
   Animations
   ========================================================================== */

@keyframes textFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.text-segment.entering {
    animation: textFadeIn 0.5s ease forwards;
}

/* Cue animations */
@keyframes cueShimmer {
    0% {
        background-position: -200% center;
    }
    100% {
        background-position: 200% center;
    }
}

.visual-cue-layer.cue-shimmer::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        transparent 0%,
        rgba(232, 168, 73, 0.1) 50%,
        transparent 100%
    );
    background-size: 200% 100%;
    animation: cueShimmer 2s linear infinite;
}

/* ==========================================================================
   Background Images
   ========================================================================== */

.background-layer {
    position: absolute;
    inset: 0;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
    transition: background-color 600ms ease;
}

.background-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

#playerPage.background-fit .background-image {
    object-fit: contain;
}

.background-image.visible {
    opacity: 1;
}

.background-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(13, 12, 15, var(--overlay-top, 0.75)) 0%,
        rgba(13, 12, 15, var(--overlay-mid, 0.55)) 50%,
        rgba(13, 12, 15, var(--overlay-bottom, 0.85)) 100%
    );
}

/* Ensure content is above background */
.segment-indicators {
    position: relative;
    z-index: 10;
}

/* ==========================================================================
   Page System
   ========================================================================== */

.page {
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: auto;
}

#playerPage {
    overflow-x: hidden;
}

.page.hidden {
    display: none !important;
}

/* ==========================================================================
   Home Page
   ========================================================================== */

.home-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-2xl);
}

.home-header {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-lg);
}

.logo {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 5.2vw, 3.1rem);
    font-weight: 700;
    background: linear-gradient(135deg, #f5efe3 0%, #ffcc7b 58%, #ffdca7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
    line-height: 1.06;
}

.tagline {
    font-family: var(--font-display);
    font-size: 1rem;
    color: rgba(245, 240, 232, 0.82);
    font-weight: 400;
}

.hero-pill {
    display: inline-flex;
    margin-bottom: var(--space-md);
    padding: 8px 14px;
    border-radius: 999px;
    border: 1px solid rgba(255, 212, 145, 0.28);
    background: rgba(255, 195, 96, 0.14);
    color: #ffd7a0;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.hero-surface {
    position: relative;
    display: grid;
    grid-template-columns: 1.15fr 1fr;
    gap: var(--space-lg);
    margin: 0 auto var(--space-lg);
    padding: clamp(1rem, 2.8vw, 1.8rem);
    max-width: 1050px;
    border-radius: 24px;
    border: 1px solid rgba(255, 193, 88, 0.24);
    background:
        radial-gradient(ellipse at top right, rgba(255, 173, 69, 0.18), transparent 45%),
        linear-gradient(145deg, rgba(18, 18, 25, 0.96), rgba(12, 12, 18, 0.9));
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.38);
    overflow: hidden;
}

.hero-copy h2 {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.35rem, 3vw, 2rem);
    line-height: 1.16;
    color: var(--text-primary);
}

.hero-copy p {
    margin: 12px 0 0;
    font-family: var(--font-body);
    font-size: 1rem;
    color: rgba(245, 240, 232, 0.78);
    max-width: 46ch;
}

.hero-action-title {
    margin: var(--space-lg) 0 0;
    font-family: var(--font-display);
    font-size: 0.92rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 214, 154, 0.88);
}

.hero-copy .home-actions {
    justify-content: flex-start;
    margin: var(--space-sm) 0 0;
}

.hero-metrics {
    display: grid;
    gap: 10px;
}

.metric-card {
    display: grid;
    gap: 4px;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid rgba(255, 213, 145, 0.2);
    background: rgba(255, 255, 255, 0.03);
}

.metric-value {
    font-family: var(--font-display);
    font-size: 1.08rem;
    font-weight: 600;
    color: #ffd29b;
}

.metric-label {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: rgba(245, 240, 232, 0.75);
    line-height: 1.35;
}

.home-marquee {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin: 0 auto var(--space-xl);
    max-width: 980px;
}

.home-marquee span {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 209, 142, 0.85);
    border: 1px solid rgba(255, 209, 142, 0.22);
    border-radius: 999px;
    padding: 7px 10px;
    background: rgba(255, 195, 96, 0.08);
}

.auth-panel {
    margin-top: var(--space-sm);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
}

.auth-user {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.auth-user img {
    width: 28px;
    height: 28px;
    border-radius: 999px;
    object-fit: cover;
    border: 1px solid rgba(245, 240, 232, 0.2);
}

.auth-label {
    color: rgba(245, 240, 232, 0.72);
    font-size: 0.84rem;
}

.auth-status-line {
    margin: 4px 0 0;
    font-family: var(--font-body);
    font-size: 0.86rem;
    color: rgba(245, 240, 232, 0.78);
}

.credits-note {
    margin: var(--space-sm) 0 0;
    font-family: var(--font-body);
    font-size: 0.88rem;
    color: rgba(245, 240, 232, 0.74);
    max-width: 50ch;
}

#createAfterLoginBtn {
    margin-top: var(--space-sm);
}

.home-top-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--space-md);
}

.home-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.home-footer-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.home-notice {
    max-width: 820px;
    margin: 0 auto var(--space-xl);
    padding: var(--space-md) var(--space-lg);
    border-radius: 14px;
    background: rgba(232, 168, 73, 0.14);
    border: 1px solid rgba(232, 168, 73, 0.35);
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.98rem;
    text-align: center;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: 12px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.action-btn.compact {
    padding: 10px 16px;
    font-size: 0.9rem;
    border-radius: 10px;
}

.storyboard-actions {
    margin-top: var(--space-sm);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

.storyboard-status {
    margin-top: var(--space-sm);
    font-size: 0.9rem;
    color: var(--text-muted);
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(13, 12, 15, 0.72);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 300;
    padding: var(--space-lg);
}

.edit-screen {
    position: fixed;
    inset: 0;
    background: var(--bg-deep);
    display: flex;
    z-index: 300;
}

.edit-screen .modal-card {
    width: 100%;
    max-height: none;
    border-radius: 0;
    box-shadow: none;
    border: none;
}

.edit-screen .modal-body {
    padding: var(--space-xl);
}

.edit-screen .action-btn {
    padding: 8px 14px;
    font-size: 0.9rem;
    border-radius: 10px;
    min-width: 0;
    white-space: nowrap;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-deep);
    border: none;
    box-shadow: 0 4px 16px rgba(232, 168, 73, 0.25);
}

.edit-screen .action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 168, 73, 0.35);
}

.edit-screen .action-btn .action-icon {
    width: 16px;
    height: 16px;
}

.edit-screen-title {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.edit-screen-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.edit-screen-header {
    gap: var(--space-md);
}

.modal-card {
    width: min(980px, 92vw);
    max-height: 85vh;
    background: var(--bg-elevated);
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.modal-header h2 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
}

.modal-body {
    padding: var(--space-lg);
    overflow-y: auto;
    display: grid;
    gap: var(--space-lg);
    --edit-base-input-size: 0.95rem;
}

.retry-image-card {
    background: var(--bg-surface);
    border-radius: 16px;
    padding: var(--space-lg);
    display: grid;
    gap: var(--space-md);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.retry-image-preview {
    display: grid;
    gap: var(--space-sm);
}

.retry-image-preview img {
    width: 100%;
    height: var(--edit-image-preview-height, 350px);
    object-fit: contain;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.04);
}

.retry-image-meta {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.retry-image-slide-text {
    font-family: var(--font-body);
    font-size: 0.98rem;
    line-height: 1.6;
    color: var(--text-primary);
    white-space: pre-wrap;
}

.retry-image-prompt {
    width: 100%;
    min-height: var(--edit-image-preview-height, 350px);
    padding: var(--space-md);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--edit-base-input-size);
    line-height: 1.7;
    resize: vertical;
}

.retry-image-title {
    display: grid;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.03);
}

.edit-slide-card {
    background: var(--bg-surface);
    border-radius: 18px;
    padding: var(--space-lg);
    display: grid;
    gap: var(--space-lg);
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(255, 255, 255, 0.06);
}

.edit-slide-header {
    display: grid;
    grid-template-columns: auto 1fr auto auto auto;
    gap: var(--space-md);
    align-items: center;
}

.edit-slide-label {
    font-family: var(--font-display);
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.edit-slide-title-input {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 0.55rem 0.75rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: calc(var(--edit-base-input-size) * 2);
}

.edit-slide-sections {
    display: grid;
    gap: var(--space-md);
}

.edit-slide-section {
    display: grid;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.05);
}

.edit-section-title {
    font-family: var(--font-display);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--text-muted);
}

.edit-slide-textarea {
    min-height: 90px;
    padding: var(--space-md);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(0, 0, 0, 0.25);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--edit-base-input-size);
    line-height: 1.6;
    resize: vertical;
}

.edit-audio-controls {
    display: grid;
    grid-template-columns: minmax(220px, 1fr) auto auto auto auto;
    gap: var(--space-sm);
    align-items: center;
}

.edit-audio-player {
    width: 100%;
}

.edit-voice-select {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.4rem 0.6rem;
    border-radius: 10px;
}

.edit-slide-status {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.edit-cue-card {
    display: grid;
    gap: var(--space-sm);
    padding: var(--space-sm);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.02);
}

.edit-cue-header {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.edit-cue-text-input {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 0.45rem 0.6rem;
    color: var(--text-primary);
    font-family: var(--font-body);
}

.edit-cue-image-block {
    display: flex;
    gap: var(--space-md);
    align-items: start;
    --edit-image-preview-height: 350px;
}

.edit-cue-image-left {
    display: grid;
    gap: var(--space-sm);
    flex: 0 0 480px;
}

.edit-sound-block {
    display: grid;
    gap: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.edit-cue-image-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-muted);
}

.edit-cue-image-controls {
    display: grid;
    gap: var(--space-sm);
    flex: 1;
    min-width: 0;
}

.edit-empty {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.retry-image-title-label {
    font-family: var(--font-display);
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.retry-image-title-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: calc(var(--edit-base-input-size) * 3);
}

.retry-image-title-status {
    font-family: var(--font-display);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.retry-image-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    align-items: center;
}

.retry-image-upload {
    display: none;
}

.retry-image-actions .action-btn {
    padding: var(--space-sm) var(--space-lg);
}

.retry-image-status {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.export-status {
    font-family: var(--font-display);
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-left: var(--space-sm);
    min-width: 120px;
}

.settings-body {
    gap: var(--space-xl);
}

.settings-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.settings-row + .settings-row {
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.settings-row label {
    font-family: var(--font-display);
    font-size: 0.85rem;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: none;
}

.toggle input {
    accent-color: var(--accent-primary);
}

.settings-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
}

.settings-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.settings-panel {
    position: absolute;
    right: 0;
    bottom: calc(100% + 12px);
    width: min(520px, 80vw);
    background: var(--bg-elevated);
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 25;
    max-height: 70vh;
    overflow-y: auto;
}

.settings-panel::after {
    content: "";
    position: absolute;
    right: 16px;
    bottom: -8px;
    width: 16px;
    height: 16px;
    background: var(--bg-elevated);
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transform: rotate(45deg);
}

.settings-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.settings-panel-header h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: var(--bg-deep);
    box-shadow: 0 4px 20px rgba(232, 168, 73, 0.3);
}

.action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(232, 168, 73, 0.4);
}

.action-btn.secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.action-btn.secondary:hover {
    background: var(--bg-surface);
    border-color: var(--accent-primary);
}

.action-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

.action-icon {
    width: 20px;
    height: 20px;
}

/* Presentations Section */
.presentations-section {
    margin-top: var(--space-xl);
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.presentations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

/* Presentation Card */
.presentation-card {
    background: var(--bg-elevated);
    border-radius: 16px;
    padding: var(--space-lg);
    cursor: pointer;
    transition: all var(--transition-smooth);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.presentation-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-glow), transparent);
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.presentation-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.presentation-card:hover::before {
    opacity: 1;
}

.card-thumbnail {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: var(--space-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    z-index: 1;
}

.card-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.card-thumbnail.empty {
    display: grid;
    place-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.card-meta {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.card-stats {
    display: flex;
    gap: var(--space-md);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.card-stat {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.card-feedback {
    margin-top: 10px;
}

.card-thumb-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    border: 1px solid rgba(245, 240, 232, 0.18);
    background: rgba(255, 255, 255, 0.02);
    color: rgba(245, 240, 232, 0.78);
    font-family: var(--font-display);
    font-size: 0.82rem;
    padding: 6px 10px;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.card-thumb-btn svg {
    width: 14px;
    height: 14px;
}

.card-thumb-btn:hover {
    border-color: rgba(255, 208, 137, 0.45);
    color: #ffd7a0;
}

.card-thumb-btn.liked {
    border-color: rgba(255, 191, 92, 0.58);
    background: rgba(255, 191, 92, 0.16);
    color: #ffd59a;
}

.card-actions {
    position: absolute;
    bottom: var(--space-md);
    right: var(--space-md);
    display: flex;
    gap: var(--space-xs);
    opacity: 0.85;
    transition: opacity var(--transition-smooth);
}

.presentation-card:hover .card-actions {
    opacity: 1;
}

.card-action-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 8px;
    background: var(--bg-surface);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.card-action-btn:hover {
    background: var(--cue-emphasis);
    color: white;
}

.card-action-btn svg {
    width: 16px;
    height: 16px;
}

/* Empty & Loading States */
.loading-state,
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--bg-surface);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-md);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.empty-hint {
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

/* ==========================================================================
   Create Page
   ========================================================================== */

.create-container {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-xl);
}

.diagram-container {
    max-width: 1000px;
}

.create-header {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.create-header h1 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 600;
}

.diagram-form .form-group textarea {
    font-family: var(--font-body);
}

.diagram-prompt {
    width: 100%;
    min-height: 220px;
    padding: var(--space-md);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(0, 0, 0, 0.25);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.95rem;
    line-height: 1.6;
    resize: vertical;
}

.diagram-output-body {
    display: grid;
    gap: var(--space-md);
}

.diagram-output-body img {
    width: 100%;
    max-height: 520px;
    object-fit: contain;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.04);
}

.diagram-output-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: var(--font-display);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.back-btn:hover {
    background: var(--bg-surface);
    color: var(--text-primary);
}

.back-btn svg {
    width: 18px;
    height: 18px;
}

/* Form */
.create-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.form-group label {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group.form-checkbox {
    gap: var(--space-xs);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-sm);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.02);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
}

.field-hint {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.form-group input[type="text"] {
    padding: var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 1.125rem;
    transition: all var(--transition-fast);
}

.form-group select {
    padding: var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.inline-field {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.inline-field select {
    flex: 1;
}

.preview-btn {
    padding: 0.6rem 0.9rem;
    background: var(--bg-elevated);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    color: var(--text-primary);
    font-family: var(--font-display);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.preview-btn:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.preview-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

/* Editor Toolbar */
.editor-toolbar {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm);
    background: var(--bg-surface);
    border-radius: 8px 8px 0 0;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: none;
}

.toolbar-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toolbar-btn:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.toolbar-divider {
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 var(--space-sm);
}

.char-count {
    margin-left: auto;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Textarea */
.form-group textarea {
    min-height: 400px;
    padding: var(--space-lg);
    background: var(--bg-elevated);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 0 0 10px 10px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    line-height: 1.7;
    resize: vertical;
    transition: all var(--transition-fast);
}

.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-group textarea::placeholder {
    color: var(--text-muted);
}

#imageStyleInput {
    min-height: 96px;
}

.storyboard-actions {
    margin-top: var(--space-sm);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
    padding-top: var(--space-md);
}

.form-actions .action-btn {
    width: 100%;
    min-height: 60px;
    height: 60px;
    padding: 0 var(--space-lg);
}

.form-actions .action-btn svg {
    width: 20px;
    height: 20px;
}

/* Preview Panel */
.preview-panel {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    background: var(--bg-elevated);
    border-radius: 12px;
}

.preview-panel h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.image-panel {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: var(--bg-elevated);
    border-radius: 12px;
}

.image-panel h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.image-panel .form-group + .form-group {
    margin-top: var(--space-lg);
}

.preview-segments {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.preview-segment {
    padding: var(--space-md);
    background: var(--bg-surface);
    border-radius: 8px;
    border-left: 3px solid var(--accent-primary);
}

.preview-segment.title {
    border-left-color: var(--cue-highlight);
}

.preview-segment-type {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-xs);
}

.preview-segment-text {
    color: var(--text-primary);
}

/* Generation Overlay */
.generation-overlay {
    position: fixed;
    inset: 0;
    background: rgba(13, 12, 15, 0.95);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.generation-overlay.hidden {
    display: none;
}

.generation-modal {
    background: var(--bg-elevated);
    padding: var(--space-2xl);
    border-radius: 20px;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.generation-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--bg-surface);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-lg);
}

.generation-modal h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.generation-status {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

.generation-progress {
    height: 6px;
    background: var(--bg-surface);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: var(--space-md);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-secondary), var(--accent-primary));
    border-radius: 3px;
    width: 0%;
    transition: width 0.3s ease;
}

.generation-detail {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Player Page Adjustments
   ========================================================================== */

#playerPage .presentation-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
}

#playerPage .back-btn {
    padding: var(--space-sm);
}

#playerPage .back-btn span {
    display: none;
}

.header-content {
    flex: 1;
    text-align: center;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
    body {
        background-image: radial-gradient(ellipse at 50% 0%, rgba(232, 168, 73, 0.06) 0%, transparent 62%);
        background-blend-mode: normal;
    }

    body[data-page="home"] {
        overflow-x: hidden;
    }

    .home-container {
        padding: calc(var(--space-lg) + var(--safe-top)) calc(var(--space-md) + var(--safe-right)) calc(var(--space-xl) + var(--safe-bottom)) calc(var(--space-md) + var(--safe-left));
    }

    .home-header {
        padding: var(--space-md) 0 var(--space-lg);
    }

    .logo {
        font-size: clamp(1.35rem, 7vw, 2rem);
    }

    .tagline {
        font-size: 0.93rem;
        color: rgba(245, 240, 232, 0.76);
    }

    .hero-pill {
        font-size: 0.72rem;
        padding: 7px 12px;
    }

    .hero-surface {
        grid-template-columns: 1fr;
        gap: var(--space-md);
        border-radius: 18px;
        margin-bottom: var(--space-md);
        padding: var(--space-md);
    }

    .hero-copy h2 {
        font-size: 1.15rem;
    }

    .hero-copy p {
        margin-top: 8px;
        font-size: 0.92rem;
    }

    .hero-action-title {
        margin-top: var(--space-md);
    }

    .hero-copy .home-actions {
        margin-top: var(--space-md);
    }

    .hero-metrics {
        grid-template-columns: 1fr;
    }

    .metric-card {
        padding: 11px 12px;
    }

    .home-marquee {
        justify-content: flex-start;
        margin-bottom: var(--space-lg);
    }

    .home-marquee span {
        font-size: 0.68rem;
        padding: 6px 9px;
    }

    .home-actions {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-sm);
        margin-bottom: var(--space-xl);
    }

    .home-actions .action-btn {
        width: 100%;
        justify-content: center;
        min-height: 52px;
        padding: var(--space-sm) var(--space-md);
        font-size: 0.96rem;
    }

    .home-top-actions {
        margin-top: var(--space-sm);
    }

    .auth-user {
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 8px;
    }

    .credits-note {
        font-size: 0.82rem;
    }

    .home-footer-actions {
        margin-top: var(--space-lg);
        padding-bottom: calc(var(--space-xl) + var(--safe-bottom));
    }

    .home-footer-actions .action-btn {
        min-width: 180px;
        min-height: 48px;
    }

    .section-title {
        font-size: 1.05rem;
        margin-bottom: var(--space-md);
        color: rgba(245, 240, 232, 0.7);
    }

    .presentations-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .presentation-card {
        padding: var(--space-md);
        border-radius: 14px;
    }

    .card-title {
        font-size: 1.15rem;
    }

    .card-meta {
        font-size: 0.82rem;
        margin-bottom: var(--space-sm);
    }

    .card-thumb-btn {
        font-size: 0.76rem;
    }

    .card-actions {
        opacity: 1;
    }

    .card-action-btn {
        width: 36px;
        height: 36px;
    }

    #playerPage .presentation-container {
        padding: calc(var(--space-xs) + var(--safe-top)) calc(var(--space-sm) + var(--safe-right)) calc(var(--space-sm) + var(--safe-bottom)) calc(var(--space-sm) + var(--safe-left));
        gap: var(--space-sm);
    }

    #playerPage .presentation-header {
        padding: var(--space-xs) var(--space-sm);
    }

    #playerPage .back-btn {
        min-width: 44px;
        min-height: 44px;
        border-radius: 10px;
    }

    #playerPage .presentation-title {
        font-size: clamp(1.08rem, 5.2vw, 1.47rem);
        line-height: 1.05;
    }

    .slide-container.slide-heading .slide-words,
    .slide-heading-text .slide-word {
        font-size: calc(clamp(1.6rem, 4vw, 2.6rem) * var(--player-font-scale, 1));
    }

    .slide-body-text .slide-word,
    .slide-word {
        font-size: calc(clamp(1.6rem, 4vw, 2.3rem) * var(--player-font-scale, 1));
    }

    .presentation-meta {
        font-size: 0.72rem;
    }

    .presentation-container {
        padding: var(--space-md);
        gap: var(--space-md);
    }

    .stage {
        border-radius: 12px;
        min-height: 0;
    }

    .text-content {
        padding: var(--space-md);
    }

    .segment-indicators {
        gap: 6px;
        padding: var(--space-sm);
    }

    .segment-dot {
        width: 10px;
        height: 10px;
    }

    .controls-bar {
        flex-wrap: nowrap;
        justify-content: flex-start;
        gap: var(--space-sm);
        padding: var(--space-sm);
        border-radius: 12px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .audio-controls {
        width: auto;
        flex: 0 0 auto;
        justify-content: flex-start;
        gap: var(--space-sm);
    }

    .control-btn {
        width: 52px;
        height: 52px;
    }

    .control-btn.small {
        width: 44px;
        height: 44px;
        border-radius: 12px;
    }

    .icon {
        width: 22px;
        height: 22px;
    }

    .control-btn.small .icon {
        width: 18px;
        height: 18px;
    }

    .time-display {
        min-width: 84px;
        font-size: 0.8rem;
    }

    .progress-container {
        order: 0;
        flex: 1 1 auto;
        min-width: 130px;
    }

    .progress-track {
        height: 10px;
        border-radius: 999px;
    }

    .progress-slider {
        height: 34px;
    }

    .progress-slider::-webkit-slider-thumb {
        width: 18px;
        height: 18px;
    }

    .cue-marker {
        top: -2px;
        width: 5px;
        height: 14px;
    }

    .secondary-controls {
        gap: var(--space-xs);
    }

    #playerPage #settingsBtn,
    #playerPage #fullscreenBtn,
    #playerPage #settingsPanel {
        display: none !important;
    }

    .volume-slider {
        display: none;
    }

    .transition-control {
        display: none;
    }

    .layout-toggle {
        display: none;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    body {
        background-image: radial-gradient(ellipse at 50% 0%, rgba(232, 168, 73, 0.05) 0%, transparent 64%);
    }
}

@media (max-width: 768px) {
    #playerPage.mobile-portrait .stage {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        grid-template-rows: minmax(0, 1fr) minmax(0, 1fr) auto;
        background: #000000;
    }

    #playerPage.mobile-portrait .background-layer {
        position: relative;
        inset: auto;
        width: 100%;
        height: 100%;
        grid-row: 1 / 2;
        left: auto;
        right: auto;
    }

    #playerPage.mobile-portrait .background-image {
        object-fit: cover;
    }

    #playerPage.mobile-portrait .background-overlay {
        display: none;
    }

    #playerPage.mobile-portrait .text-content {
        grid-row: 2 / 3;
        max-height: none;
        padding: var(--space-md);
        background: #000000;
        align-items: flex-start;
        justify-content: flex-start;
        text-align: left;
    }

    #playerPage.mobile-portrait .slide-container {
        width: 100%;
        min-height: auto;
        padding: 0;
        align-items: flex-start;
        justify-content: flex-start;
    }

    #playerPage.mobile-portrait .slide-words,
    #playerPage.mobile-portrait .slide-heading-text,
    #playerPage.mobile-portrait .slide-body-text {
        width: 100%;
        max-width: none;
        text-align: left;
    }

    #playerPage.mobile-portrait .slide-container.slide-heading .slide-words,
    #playerPage.mobile-portrait .slide-heading-text .slide-word {
        font-size: calc(clamp(1rem, 3.2vw, 1.3rem) * var(--player-font-scale, 1));
        line-height: 1.3;
    }

    #playerPage.mobile-portrait .slide-body-text .slide-word,
    #playerPage.mobile-portrait .slide-word {
        font-size: calc(clamp(1.08rem, 3.3vw, 1.32rem) * var(--player-font-scale, 1));
        line-height: 1.45;
    }

    #playerPage.mobile-portrait .segment-indicators {
        grid-row: 3 / 4;
        background: #000000;
        padding-top: var(--space-xs);
        padding-bottom: var(--space-md);
    }

    #playerPage.mobile-portrait .controls-bar {
        padding-right: calc(var(--space-sm) + var(--safe-right) + 10px);
    }

    #playerPage.mobile-portrait .progress-container {
        min-width: 0;
    }

    #playerPage.mobile-portrait .progress-track {
        margin-right: 2px;
    }
}

@media (max-width: 1024px) and (orientation: landscape) {
    #playerPage.mobile-landscape .presentation-container {
        padding: var(--space-xs) calc(var(--space-sm) + var(--safe-right)) calc(var(--space-xs) + var(--safe-bottom)) calc(var(--space-sm) + var(--safe-left));
        gap: var(--space-xs);
        position: relative;
    }

    #playerPage.mobile-landscape .presentation-header {
        position: absolute;
        top: calc(var(--safe-top) + 6px);
        left: calc(var(--safe-left) + 8px);
        right: auto;
        padding: 0;
        border-bottom: none;
        z-index: 40;
        pointer-events: none;
    }

    #playerPage.mobile-landscape .header-content,
    #playerPage.mobile-landscape .presentation-title,
    #playerPage.mobile-landscape .presentation-meta {
        display: none !important;
    }

    #playerPage.mobile-landscape .back-btn {
        pointer-events: auto;
        min-width: 36px;
        min-height: 36px;
        width: 36px;
        height: 36px;
        border-radius: 10px;
        background: rgba(18, 16, 22, 0.86);
        border: 1px solid rgba(255, 255, 255, 0.14);
        backdrop-filter: blur(8px);
    }

    #playerPage.mobile-landscape .stage {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
        grid-template-rows: minmax(0, 1fr) auto;
        gap: 0;
    }

    #playerPage.mobile-landscape .background-layer {
        width: 50%;
        left: auto;
        right: 0;
    }

    #playerPage.mobile-landscape .background-overlay {
        display: none;
    }

    #playerPage.mobile-landscape .text-content {
        grid-column: 1 / 2;
        max-height: none;
        padding: var(--space-md);
        background: rgba(0, 0, 0, 0.9);
        align-items: flex-start;
        text-align: left;
    }

    #playerPage.mobile-landscape .slide-container {
        width: 100%;
        min-height: 100%;
        padding: 0;
        align-items: flex-start;
        justify-content: center;
    }

    #playerPage.mobile-landscape .slide-words,
    #playerPage.mobile-landscape .slide-heading-text,
    #playerPage.mobile-landscape .slide-body-text {
        width: 100%;
        max-width: none;
        text-align: left;
    }

    #playerPage.mobile-landscape .slide-container.slide-heading .slide-words,
    #playerPage.mobile-landscape .slide-heading-text .slide-word {
        font-size: calc(clamp(0.95rem, 2.2vw, 1.2rem) * var(--player-font-scale, 1));
        line-height: 1.28;
    }

    #playerPage.mobile-landscape .slide-body-text .slide-word,
    #playerPage.mobile-landscape .slide-word {
        font-size: calc(clamp(1rem, 2.5vw, 1.18rem) * var(--player-font-scale, 1));
        line-height: 1.4;
    }

    #playerPage.mobile-landscape .segment-indicators {
        grid-column: 1 / 3;
        padding: var(--space-xs) var(--space-sm);
    }

    #playerPage.mobile-landscape .controls-bar {
        padding: var(--space-xs) var(--space-sm);
        gap: var(--space-xs);
    }

    #playerPage.mobile-landscape .audio-controls {
        gap: var(--space-xs);
    }

    #playerPage.mobile-landscape .control-btn {
        width: 42px;
        height: 42px;
    }

    #playerPage.mobile-landscape .control-btn.small {
        width: 34px;
        height: 34px;
    }

    #playerPage.mobile-landscape .time-display {
        min-width: 74px;
        font-size: 0.74rem;
    }
}

/* ==========================================================================
   Fullscreen Mode
   ========================================================================== */

.presentation-container.fullscreen {
    max-width: 100%;
    padding: var(--space-xl);
}

.presentation-container.fullscreen .stage {
    border-radius: 0;
}

.presentation-container.fullscreen .text-segment {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
}

.presentation-container.fullscreen .controls-bar.controls-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
}

.presentation-container.fullscreen .presentation-header.controls-hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-12px);
    transition: opacity 200ms ease, transform 200ms ease;
}