#preview-container {
    display: flex;
    flex-direction: column;
    animation: sectionFadeIn 0.5s ease;
    width: 100%;
    height: 100vh;
    padding: 0;
    overflow: hidden;
    position: fixed;
    /* Bound to viewport strictly */
    inset: 0;
    z-index: 500;
    background: var(--bg);
    overscroll-behavior: none;
    /* Block browser's own swipe-to-navigate patterns */
}

.preview-unified-header {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 1rem;
    background: var(--bg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    flex-shrink: 0;
    z-index: 20;
    position: relative;
    min-height: 52px;
    height: auto;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.preview-unified-header.slide-down {
    transform: translateY(0);
    opacity: 1;
}




.preview-unified-left {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    overflow: hidden;
}

.preview-unified-center {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.preview-unified-right {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Make theme button in the preview header icon-only (no visible border) */
.preview-unified-right .theme-toggle-btn {
    background: transparent;
    border: none;
    color: var(--muted);
    padding: 0.5rem;
    border-radius: 6px;
    width: auto;
    height: auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.preview-unified-right .theme-toggle-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
    transform: none;
}

/* Ensure preview header theme toggle is icon-only across themes and overrides theme-specific rules */
:root[data-theme="light"] .preview-unified-right .action-btn.icon-only.theme-toggle-btn,
:root[data-theme="dark"] .preview-unified-right .action-btn.icon-only.theme-toggle-btn,
.preview-unified-right .action-btn.icon-only.theme-toggle-btn {
    background: transparent !important;
    border: none !important;
    color: var(--muted) !important;
    padding: 0.5rem !important;
    border-radius: 6px !important;
    width: auto !important;
    height: auto !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-shadow: none !important;
}

:root[data-theme="light"] .preview-unified-right .action-btn.icon-only.theme-toggle-btn:hover,
:root[data-theme="dark"] .preview-unified-right .action-btn.icon-only.theme-toggle-btn:hover,
.preview-unified-right .action-btn.icon-only.theme-toggle-btn:hover {
    color: var(--text) !important;
    background: rgba(255, 255, 255, 0.05) !important;
}

#canvas-zoom-select,
.zoom-display {
    background: transparent;
    border: none;
    cursor: default;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0 2px;
    min-width: 45px;
    text-align: center;
}

.zoom-display {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
}

#btn-zoom-in,
#btn-zoom-out {
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text);
    font-family: var(--font-body);
    font-size: 0.9rem;
}

.preview-topic-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--muted);
    font-weight: 300;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.02em;
    max-width: 200px;
}

.header-icon-btn {
    background: transparent;
    border: none;
    color: var(--muted);
    padding: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}

.header-icon-btn:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.header-v-separator {
    width: 1px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    margin: 0 0.5rem;
    flex-shrink: 0;
}

:root[data-theme="light"] .preview-unified-header {
    background: var(--surface2);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

:root[data-theme="light"] .header-v-separator {
    background: rgba(0, 0, 0, 0.06);
}

.nav-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    pointer-events: auto;
}


.slide-label {
    font-family: monospace;
    font-size: 0.65rem;
    color: var(--muted);
    opacity: 0.8;
}


.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.35rem 0.8rem;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.action-btn:disabled,
.header-icon-btn:disabled {
    opacity: 0.3 !important;
    cursor: not-allowed !important;
    filter: grayscale(1);
    pointer-events: none;
}

.btn-content-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 1;
    transition: opacity 0.3s;
}

.action-btn.loading .btn-content-wrap {
    opacity: 0;
}

.action-btn.loading {
    pointer-events: none;
}

.btn-progress-fill {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0%;
    background: var(--accent);
    z-index: 0;
    transition: width 0.3s ease;
}

.action-btn.icon-only {
    background: transparent;
    color: var(--muted);
    padding: 0.5rem;
    border-radius: 6px;
}

.action-btn.icon-only:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.action-btn.text-link {
    background: transparent;
    color: var(--muted);
    font-size: 0.75rem;
    padding: 0.4rem 0.6rem;
    border-radius: 6px;
}

.action-btn.text-link:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.action-btn.bordered-primary {
    background: transparent;
    color: var(--text);
    border: 1px solid rgba(255, 255, 255, 0.15);
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 0.8rem;
    margin-left: 0.5rem;
}

.action-btn.bordered-primary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
}

.export-dropdown {
    position: relative;
    margin-left: 0.5rem;
}

/* The homepage support link has the dark RGB edge; editor chrome stays neutral. */
.home-donation-link {
    border: 2px solid transparent;
    color: #f4f7ff;
    background: linear-gradient(135deg, #111827, #171525) padding-box,
        var(--support-edge-gradient) border-box;
    background-size: 100% 100%, 300% 300%;
    box-shadow: 0 4px 14px rgba(6, 10, 27, 0.28), 0 0 14px rgba(54, 72, 146, 0.16);
    animation: support-edge-drift 9s ease-in-out infinite;
}

.home-donation-link:hover,
.home-donation-link:focus-visible {
    color: #fff;
    box-shadow: 0 5px 18px rgba(6, 10, 27, 0.36), 0 0 20px rgba(70, 105, 185, 0.32);
    transform: translateY(-1px);
}

@media (prefers-reduced-motion: reduce) {
    .home-donation-link { animation: none; }
}

.export-menu-trigger {
    margin-left: 0;
    gap: 0.45rem;
}

.export-menu-trigger[aria-expanded="true"] {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.32);
}

.export-menu-chevron {
    transition: transform 0.2s ease;
}

.export-menu-trigger[aria-expanded="true"] .export-menu-chevron {
    transform: rotate(180deg);
}

.dropdown-menu.export-menu {
    top: calc(100% + 10px);
    bottom: auto;
    left: auto;
    right: 0;
    min-width: 284px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
    transform-origin: top right;
    z-index: 100;
}

.dropdown-item.export-option {
    position: relative;
    flex-direction: row;
    align-items: flex-start;
    min-height: 62px;
    overflow: hidden;
    padding: 0.7rem 0.8rem;
    border-radius: 9px;
    transition: background 0.16s ease;
}

.dropdown-item.export-option:hover,
.dropdown-item.export-option:focus-visible {
    background: var(--surface2);
}

.dropdown-item.export-option + .dropdown-item.export-option {
    border-top: 1px solid var(--border);
}

.export-option-copy {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    width: 100%;
}

.dropdown-item.export-option.loading {
    pointer-events: none;
}

.dropdown-item.export-option.loading .export-option-copy {
    opacity: 0.35;
}

.dropdown-item.export-option .export-option-copy {
    position: relative;
    z-index: 1;
}



.action-btn.ghost {
    background: transparent;
    color: var(--muted);
    padding: 0.45rem 0.6rem;
}

.action-btn.ghost:hover {
    color: var(--text);
    background: rgba(255, 255, 255, 0.05);
}

.action-btn svg {
    flex-shrink: 0;
}



/* Slide dots */
.slide-dots {
    display: flex;
    align-items: center;
    gap: 5px;
}

.slide-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--surface2);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 1, 0.5, 1);
}

.slide-dot:hover {
    background: var(--muted);
    transform: scale(1.3);
}

.slide-dot.active {
    background: var(--accent);
    transform: scale(1.4);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.3);
}

/* Stage (slide + arrows) */
.preview-stage {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin-top: 0;
    min-height: 0;
    /* Allow shrinking below content size */
    position: relative;
    background: var(--bg);
}

/* Live status shown while the final HTML is being generated. It is owned by
   the parent document so it can appear before the first HTML chunk arrives. */
.preview-stream-status {
    position: static;
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    max-width: min(100%, 38rem);
    padding: 0 .5rem;
    box-sizing: border-box;
    background: var(--bg);
    color: var(--text);
    font-size: 0.88rem;
    line-height: 1.5;
    letter-spacing: 0.02em;
    opacity: 0;
    pointer-events: none;
    text-align: center;
    text-shadow: 0 1px 16px color-mix(in srgb, var(--bg) 85%, transparent);
    transition: opacity 0.25s ease;
}

#preview-container.is-generating .preview-stream-status {
    opacity: 1;
}

.preview-stream-orb-overlay {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 16px;
    box-sizing: border-box;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.65s ease;
    background: var(--bg);
}

#preview-container.is-generating .preview-stream-orb-overlay {
    opacity: 1;
}

#preview-container.is-generating.is-awaiting-first-slide .preview-wrapper,
#preview-container.is-generating.is-awaiting-first-slide .preview-stage { background: var(--bg); }
#preview-container.is-generating:not(.is-awaiting-first-slide) .preview-stream-orb-overlay { background: transparent; justify-content: flex-end; }
#preview-container.is-generating:not(.is-awaiting-first-slide) .preview-stream-orb { display: none; }

.preview-stream-orb {
    display: block;
    flex: 0 0 auto;
    width: min(100%, 480px);
    max-height: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
}

.preview-stream-orb .aedos-thinking-orb {
    display: block;
    width: 100%;
    height: 100%;
    aspect-ratio: 1 / 1;
}

@media (prefers-reduced-motion: reduce) {
    .preview-stream-orb-overlay,
    .preview-stream-status {
        transition-duration: 0.01ms;
    }
}

.preview-stage:fullscreen,
.preview-stage:-webkit-full-screen,
.preview-stage:-moz-full-screen,
.preview-stage:-ms-fullscreen {
    background: var(--bg);
    width: 100vw;
    height: 100vh;
}

.preview-stage:fullscreen .preview-wrapper,
.preview-stage:-webkit-full-screen .preview-wrapper,
.preview-stage:-moz-full-screen .preview-wrapper,
.preview-stage:-ms-fullscreen .preview-wrapper {
    max-width: none !important;
    max-height: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    border: none !important;
}

.preview-stage:fullscreen .stage-arrow,
.preview-stage:-webkit-full-screen .stage-arrow,
.preview-stage:-moz-full-screen .stage-arrow,
.preview-stage:-ms-fullscreen .stage-arrow {
    z-index: 100;
}



/* Full-height hover panels for arrows */
.stage-arrow {
    position: absolute;
    top: 0;
    bottom: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 70px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0);
    cursor: pointer;
    transition: all 0.4s ease;
    opacity: 0;
}

.stage-arrow.left {
    left: 0;
}

.stage-arrow.right {
    right: 0;
}

.stage-arrow.left svg {
    transform: translateX(-12px);
}

.stage-arrow.right svg {
    transform: translateX(12px);
}

.stage-arrow:hover:not(:disabled) {
    opacity: 1;
    color: white;
}

.stage-arrow.left:hover:not(:disabled) {
    background: radial-gradient(ellipse at left center, rgba(255, 255, 255, 0.07) 0%, transparent 70%);
}

.stage-arrow.right:hover:not(:disabled) {
    background: radial-gradient(ellipse at right center, rgba(255, 255, 255, 0.07) 0%, transparent 70%);
}

.stage-arrow.left:hover:not(:disabled) svg {
    transform: translateX(0);
}

.stage-arrow.right:hover:not(:disabled) svg {
    transform: translateX(0);
}

.stage-arrow:disabled {
    opacity: 0 !important;
    pointer-events: none;
}

.stage-arrow svg {
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
}

/* Slide wrapper */
.preview-wrapper {
    position: relative;
    width: 100%;
    margin: 0 auto;
    border-radius: 0;
    overflow: visible;
    background: var(--surface);
    touch-action: none;
}

#preview-container.is-generating .preview-wrapper {
    overflow: hidden;
}

#preview-container.is-generating .preview-stage {
    overflow: hidden;
}

#preview-iframe {
    width: 297mm;
    height: 167mm;
    border: none;
    transform-origin: top left;
    pointer-events: auto;
    overflow: hidden;
}

/* ================================================================
   RESPONSIVE
   ================================================================ */
@media (max-width: 900px) {
    .preview-unified-header {
        flex-wrap: wrap;
        gap: 0.5rem;
        padding: 0.6rem 0.75rem;
        position: absolute;
        /* Match PC: absolute to allow slide-down animation */
        height: auto;
        min-height: 90px;
    }

    .preview-unified-left {
        flex: 1 1 auto;
        justify-content: flex-start;
        order: 1;
    }

    .preview-unified-right {
        flex: 0 0 auto;
        justify-content: flex-end;
        order: 2;
        gap: 0.4rem;
    }

    .preview-unified-center {
        flex: 1 1 100%;
        position: static;
        transform: none;
        order: 3;
        margin-top: 0.25rem;
        padding: 0.4rem 0;
        border-top: 1px solid rgba(255, 255, 255, 0.05);
        pointer-events: auto;
    }

    .nav-group {
        width: 100%;
        justify-content: center;
    }

    .preview-topic-label {
        max-width: 120px;
    }

    .action-btn.bordered-primary {
        margin-left: 0;
        padding: 0.35rem 0.6rem;
    }

    .preview-stage {
        margin-top: 90px;
        /* Non-overlapping space for mobile header */
        height: calc(100vh - 90px);
    }

    .preview-wrapper {
        width: 100vw;
        max-width: 100vw;
        aspect-ratio: 16 / 9;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .stage-arrow {
        width: 40px;
        opacity: 0.1;
    }

    .stage-arrow.left {
        left: 0;
    }

    .stage-arrow.right {
        right: 0;
    }
}

@media (max-width: 600px) {
    .wizard-container {
        padding: 0 0.5rem;
    }

    .wizard-label {
        font-size: 1.3rem;
    }

    .preset-colors {
        gap: 0.5rem;
    }

    .color-circle {
        width: 28px;
        height: 28px;
    }

    .toolbar-btn span {
        display: none;
    }
}

/* ================================================================
   GENERATING STATE — hide chrome, show only skeleton
   ================================================================ */

/* Instant collapse: no transition while entering generating state */
#preview-container.is-generating .editor-minimap {
    opacity: 0 !important;
    pointer-events: none !important;
    transition: none !important;
}

#preview-container.is-generating .editor-tools-panel {
    transform: translateX(100px) scale(0.9);
    opacity: 0 !important;
    pointer-events: none !important;
}

#preview-container.is-generating .preview-unified-header {
    opacity: 0 !important;
    pointer-events: none !important;
}

/* While streaming/settling, side panels must not reserve layout width. */
#preview-container.is-generating .editor-minimap,
#preview-container.is-generating .editor-tools-panel,
#preview-container.is-settling .editor-minimap,
#preview-container.is-settling .editor-tools-panel {
    width: 0 !important;
    min-width: 0 !important;
    max-width: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    border: 0 !important;
    overflow: hidden !important;
}

/* ================================================================
   SETTLING STATE — slide is animating to its resting position.
   ================================================================ */
#preview-container.is-settling .editor-minimap {
    opacity: 0 !important;
    pointer-events: none !important;
    transition: none !important;
}

#preview-container.is-settling .editor-tools-panel {
    opacity: 0 !important;
    pointer-events: none !important;
    transition: none !important;
}

/* CINEMATIC GENERATION MODE & FLOATING LAYOUT */
@media (min-width: 769px) {
    #preview-container:not(.hidden) {
        padding: 0;
        background: var(--bg);
        display: flex !important;
        flex-direction: column;
        position: fixed;
        inset: 0;
        overflow: hidden;
    }

    #preview-container.hidden {
        display: none !important;
    }

    #preview-container.is-generating {
        padding: 0 !important;
    }

    /* Clear any GSAP-set inline padding on the stage so the slide fills the
       full viewport during streaming. This overrides leftover values from the
       previous generation’s settling animation. */
    #preview-container.is-generating .preview-stage {
        padding: 0 !important;
    }

    /* Cabecera Flotante Centrada */
    .preview-unified-header {
        position: absolute !important;
        top: 8px;
        left: 50% !important;
        transform: translateX(-50%) !important;
        width: 98% !important;
        max-width: 1100px;
        height: 46px !important;
        z-index: 1000 !important;
        background: color-mix(in srgb, var(--surface2) 45%, transparent) !important;
        backdrop-filter: blur(30px) saturate(2);
        -webkit-backdrop-filter: blur(30px) saturate(2);
        border: 1px solid var(--border) !important;
        border-radius: 50px !important;
        display: flex !important;
        align-items: center;
        justify-content: space-between;
        padding: 0 20px !important;
        transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1) !important;
    }

    .preview-unified-center {
        position: absolute;
        left: 50%;
        transform: translateX(calc(-50% - 56px));
    }

    .editor-main-layout {
        display: block;
        position: relative;
        width: 100%;
        flex: 1;
        /* Fill the remaining space below the header. */
        margin: 0;
        overflow: hidden;
    }

    .preview-wrapper {
        border-radius: 0 !important;
        box-shadow: none !important;
        overflow: hidden;
        border: none !important;
    }

    .preview-stage {
        position: absolute;
        inset: 0;
        width: 100%;
        height: 100%;
        padding: 0;
        z-index: 1;
        display: flex !important;
        align-items: center;
        justify-content: center;
        background: var(--bg) !important;
    }

    .editor-minimap {
        position: absolute !important;
        left: 15px;
        top: 50%;
        transform: translateY(-50%);
        z-index: 10;
        height: auto !important;
        max-height: 320px;
        width: 140px;
        border-radius: 20px;
        background: color-mix(in srgb, var(--surface2) 45%, transparent) !important;
        backdrop-filter: blur(30px) saturate(2);
        -webkit-backdrop-filter: blur(30px) saturate(2);
        border: 1px solid var(--border) !important;
        box-shadow: none !important;
        padding: 8px 0 !important;
        transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1) !important;
        overflow: hidden !important;
    }

    .editor-tools-panel {
        position: absolute !important;
        right: 24px;
        top: 50%;
        transform: translateY(-50%);
        z-index: 10;
        height: auto !important;
        max-height: 85vh;
        width: 260px;
        border-radius: 24px;
        background: color-mix(in srgb, var(--surface) 82%, transparent) !important;
        backdrop-filter: blur(18px) saturate(1.2);
        -webkit-backdrop-filter: blur(18px) saturate(1.2);
        border: 1px solid var(--border) !important;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 8px 30px rgba(0, 0, 0, 0.18) !important;
        padding: 1.25rem !important;
        transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1) !important;
    }

    :root[data-theme="light"] .editor-tools-panel {
        background: color-mix(in srgb, var(--surface) 90%, transparent) !important;
        box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), 0 8px 24px rgba(17, 24, 39, 0.10) !important;
    }

    .editor-tools-panel:not(.active) {
        transform: translateY(-50%) translateX(100px);
        opacity: 0;
        pointer-events: none;
    }

    /* Floating Master Toolbar (Bottom) */
    .tools-add-elements {
        position: absolute !important;
        bottom: 8px;
        left: 50%;
        transform: translateX(-50%) translateY(16px);
        /* shifted down = hidden state */
        z-index: 100;
        display: flex !important;
        flex-direction: row !important;
        align-items: center;
        gap: 8px;
        padding: 8px 12px !important;
        background: rgba(18, 18, 18, 0.5) !important;
        backdrop-filter: blur(20px) saturate(1.5);
        -webkit-backdrop-filter: blur(20px) saturate(1.5);
        border: 1px solid rgba(255, 255, 255, 0.08) !important;
        border-radius: 40px !important;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.5s ease, transform 0.55s cubic-bezier(0.16, 1, 0.3, 1);
    }

    /* Reveal toolbar once the slide has settled in editor mode */
    #preview-container.is-editor-ready .tools-add-elements {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
        pointer-events: auto;
    }

    .tools-add-elements .add-el-btn {
        flex-direction: column !important;
        gap: 4px !important;
        padding: 8px 12px !important;
        height: auto !important;
        min-width: 70px;
        border-radius: 20px !important;
        background: transparent !important;
        border: none !important;
        font-size: 10px !important;
        font-weight: 700 !important;
        letter-spacing: 0.05em;
        color: rgba(255, 255, 255, 0.6) !important;
        transition: all 0.3s ease;
    }

    .tools-add-elements .add-el-btn:hover {
        background: rgba(255, 255, 255, 0.08) !important;
        color: #fff !important;
        transform: translateY(-2px);
    }

    .tools-add-elements .add-el-btn svg {
        width: 20px !important;
        height: 20px !important;
        margin-bottom: 2px;
        opacity: 0.8;
    }

    .tools-v-separator {
        width: 1px;
        height: 30px;
        background: rgba(255, 255, 255, 0.1);
        margin: 0 4px;
    }

    /* Unified Header Redesign (Floating style) */
    .preview-unified-header {
        opacity: 1;
        transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    }

    /* Keep the header content horizontal. */
    .header-left,
    .header-right {
        display: flex !important;
        align-items: center;
        gap: 10px;
    }
}

/* Reveal animation — applied via .reveal-chrome on the container */
/* Reveal: staggered sequence helpers
   We animate header, then minimap, then tools with small delays to feel less chaotic. */

/* Minimap reveal (trigger by adding `reveal-minimap` on the container) */
/* Start the panels slightly offset and invisible when the reveal sequence begins */
#preview-container.reveal-sequence .editor-minimap {
    width: 0 !important;
    min-width: 0 !important;
    padding: 0 !important;
    border-right: none !important;
    overflow: hidden !important;
    transform: translateY(-50%) translateX(-28px);
    opacity: 0;
    transition: none !important;
}

/* Minimap reveal (trigger by adding `reveal-minimap` on the container) */
#preview-container.reveal-minimap .editor-minimap {
    width: 180px !important;
    min-width: 180px !important;
    transform: translateY(-50%) translateX(0) !important;
    opacity: 1 !important;
    overflow: hidden !important;
    transition:
        transform 0.85s cubic-bezier(0.16, 1, 0.3, 1),
        opacity 0.65s ease,
        width 0.85s cubic-bezier(0.16, 1, 0.3, 1),
        min-width 0.85s cubic-bezier(0.16, 1, 0.3, 1),
        border-right 0.3s ease !important;
}

/* Tools start offset to the right during the sequence */
#preview-container.reveal-sequence .editor-tools-panel {
    width: 0 !important;
    min-width: 0 !important;
    padding: 0 !important;
    border-left: none !important;
    overflow: hidden !important;
    transform: translateY(-50%) translateX(28px);
    opacity: 0;
    transition: none !important;
}

/* Tools reveal (trigger by adding `reveal-tools` on the container) */
#preview-container.reveal-tools .editor-tools-panel {
    width: 260px !important;
    min-width: 260px !important;
    padding: 1rem !important;
    transform: translateY(-50%) translateX(0) !important;
    opacity: 1 !important;
    overflow: hidden !important;
    transition:
        transform 0.85s cubic-bezier(0.16, 1, 0.3, 1),
        opacity 0.65s ease,
        width 0.85s cubic-bezier(0.16, 1, 0.3, 1),
        min-width 0.85s cubic-bezier(0.16, 1, 0.3, 1),
        padding 0.55s ease,
        border-left 0.3s ease !important;
}

/* The header slide-down already has its own transition. Keep explicit timings to match sequence. */
#preview-container.reveal-sequence .preview-unified-header {
    transition:
        transform 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0s,
        opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1) 0s !important;
}

/* Mobile layout extracted to mobile/css/style-mobile-overrides.css */

.preview-topic-input {
    background: transparent;
    border: 1px dashed transparent;
    color: var(--text);
    font-size: 0.9rem;
    font-family: var(--font-display);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    width: 250px;
    max-width: 100%;
    outline: none;
    transition: border 0.2s, background 0.2s;
}

.preview-topic-input:hover,
.preview-topic-input:focus {
    border-color: var(--border);
    background: rgba(255, 255, 255, 0.05);
}