/* This file is part of Nokia HEIF library
 *
 * Copyright (c) 2015-2026 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
 *
 * Contact: heif@nokia.com
 *
 * This software, including documentation, is protected by copyright controlled by Nokia Corporation and/ or its subsidiaries. All rights are reserved.
 *
 * Copying, including reproducing, storing, adapting or translating, any or all of this material requires the prior written consent of Nokia.
 */

/* Gallery Page Styles - Compact masonry layout with native thumbnail sizes */

.gallery-container {
    background-color: var(--bg-page);
    min-height: 100vh;
    padding-top: 100px;
    padding-bottom: 60px;
}

.gallery-header {
    text-align: center;
    padding: 30px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.gallery-header h1 {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--fg-default);
    margin-bottom: 10px;
}

.gallery-subtitle {
    font-size: 1rem;
    color: var(--fg-muted);
    font-weight: 400;
}

/* Gallery Set Switcher */
.gallery-set-switcher {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
}

.gallery-set-btn {
    flex: 1;
    max-width: 200px;
    padding: 10px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    border: none;
    border-bottom: 2px solid var(--border-subtle);
    border-radius: 0 0 6px 6px;
    background: transparent;
    color: var(--fg-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.gallery-set-btn:hover {
    border-bottom-color: var(--accent-primary);
    color: var(--accent-primary);
}

.gallery-set-btn.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    border-top: 2px solid var(--color-blue-digital);
    border-radius: 6px;
    color: var(--color-blue-digital);
}

/* Layout-mode toggle (Adaptive grid / Native pixels).
 *
 * Honours the subtitle's promise: Adaptive is the default polished masonry,
 * Native shows each thumbnail at its real embedded bitmap dimensions.
 * Sits to the right of the set switcher on the same row.
 */
.gallery-view-control {
    width: calc(100% - 80px);
    max-width: 1400px;
    margin: 0 auto 8px auto;
    display: flex;
    justify-content: flex-end;
    align-items: baseline;
    gap: 8px;
    font-size: 0.78rem;
    color: var(--fg-muted);
    letter-spacing: 0.02em;
}
.gallery-view-control-label {
    color: var(--fg-muted);
    opacity: 0.75;
}
.gallery-view-toggle {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
}
.gallery-view-toggle-sep {
    color: var(--fg-muted);
    opacity: 0.5;
    user-select: none;
}
.gallery-view-btn {
    background: none;
    border: 0;
    padding: 2px 0;
    margin: 0;
    font: inherit;
    color: var(--fg-muted);
    cursor: pointer;
    transition: color 0.15s ease;
    -webkit-tap-highlight-color: transparent;
}
.gallery-view-btn:hover { color: var(--fg-default); }
.gallery-view-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}
.gallery-view-btn.active {
    color: var(--accent-primary);
    font-weight: 600;
}

/* Combined loading status bar.
 *
 * Single source of truth for "is the gallery still working?" - replaces the
 * spinner-on-its-own-row that pushed everything below the fold.
 *
 * Layout-shift strategy: the bar reserves a fixed height in normal flow at
 * ALL times (even when .complete). Going from loading -> done is purely an
 * opacity fade; the slot stays put, so the grid below never moves.
 * Visual is the standard NProgress / YouTube top-of-page pattern: tiny
 * uppercase status text + thin accent fill bar.
 */
.gallery-status-bar {
    width: calc(100% - 80px);
    max-width: 1400px;
    height: 24px; /* permanently reserved → no layout shift on completion */
    margin: 0 auto 8px auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: 4px;
    pointer-events: none;
    transition: opacity 0.4s ease;
}
.gallery-status-bar.complete {
    opacity: 0;
}
.gallery-status-text {
    font-size: 0.7rem;
    color: var(--fg-muted);
    text-align: center;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    opacity: 0.7;
    line-height: 1;
}
.gallery-status-track {
    width: 100%;
    max-width: 480px;
    height: 2px;
    background: var(--border-light);
    border-radius: 2px;
    overflow: hidden;
}
.gallery-status-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-primary);
    transition: width 0.25s ease;
}

/* Masonry-style packed grid using CSS columns */
.gallery-grid {
    --gi-row-px: 4px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-auto-rows: var(--gi-row-px);
    gap: 4px;
    width: calc(100% - 80px);
    max-width: 1400px;
    margin: 0 auto;
    padding: 0;
}

/* Individual gallery item - native size, no forced dimensions */
.gallery-item {
    position: relative;
    cursor: pointer;
    overflow: hidden;
    background: var(--bg-muted);
    box-shadow: var(--shadow-sm);
    grid-row-end: span var(--gi-span, 46);
    content-visibility: auto;
    /* Match the default span: 46 implicit rows = (46-1)*8 + 4 = 364px,
     * close to 360 here. Keeps off-screen and pre-measured tiles from
     * jumping when they scroll into view. */
    contain-intrinsic-size: auto 240px auto 364px;
}

/* Tiles whose decoded thumbnail carries an alpha channel (auxiliary
 * `alpha` items, plus any other type with hasAlpha set during
 * extractMetadata). The default tile background is `--bg-muted`, which
 * is a noticeably darker shade than `--bg-page` in both themes; with a
 * transparent thumbnail on top, the tile reads as a darker rectangle
 * floating in the page. Swapping the backdrop to `--bg-page` makes the
 * transparent regions blend into the surrounding page so the alpha
 * thumbnail looks like it's cut out of the page itself, not pasted on.
 * The shadow has to go too - a shadow around a transparent rectangle
 * still draws a dark halo on every side, which would re-introduce the
 * "floating swatch" appearance we just got rid of. Doesn't affect tiles
 * without alpha. */
.gallery-item.gallery-item-has-alpha {
    background: var(--bg-page);
    box-shadow: none;
}

/* Adaptive-mode rotation wrapper.
 *
 * `_wrapRotatedCanvas` builds a wrapper sized via `width: 100%;
 * padding-bottom: visualAspect%`. That gives the wrapper exactly the
 * natural visual height of the rotated content (W * visualAspect) and
 * NOTHING MORE. The masonry, however, rounds the tile's height to a
 * whole number of grid rows (rowPx + gapPx == 8px), so the tile is
 * almost always 1-7px taller than the wrapper. The result for portrait
 * Apple HEICs (rotated landscape) is a thin empty strip below the
 * thumbnail.
 *
 * Pinning the wrapper with `position: absolute; inset: 0` makes it
 * cover the entire masonry-rounded tile. The transform/scale math
 * inside still resolves the canvas to the wrapper's size, so the
 * rotated thumbnail expands by the same 1-7px and the bottom strip
 * disappears. The `padding-bottom` value set inline by JS is harmless
 * on an absolutely-positioned element with explicit `inset`.
 *
 * Native mode has its own (explicit pixel-sized) wrapper rule below
 * and intentionally does NOT use absolute positioning. */
.gallery-grid:not(.gallery-mode-native) .gallery-rotation-wrapper {
    position: absolute !important;
    inset: 0;
    width: auto !important;
    padding-bottom: 0 !important;
    overflow: hidden;
}

.gallery-item canvas,
.gallery-item img {
    display: block;
    width: 100%;
    /* Fill the cell exactly. The masonry span-row rounding can leave the
     * cell up to ~4px taller than the image's natural height; without
     * height: 100% the image sits at the top of the cell and the hover
     * overlay (which covers the cell) extends below the image, AND the
     * empty strip looks like an inflated grid gap. object-fit: cover lets
     * the rounding crop be invisible. Native mode overrides this below. */
    height: 100%;
    object-fit: cover;
    transition: transform 0.25s ease-out, opacity 0.25s ease-out;
    will-change: transform;
}

/* Pixel-honest sampling for conformance content (C83.hmg). Nearest-neighbour
 * preserves exact sample values when the tiny thumbnail is CSS-stretched to
 * tile size — appropriate for pixel-peeping, but too harsh for photographic
 * thumbnails where smooth interpolation looks better. */
.gallery-pixel-honest canvas,
.gallery-pixel-honest img {
    image-rendering: pixelated;
}

/* Compositor-only crossfade for newly-decoded thumbnails (driven by JS) */
.gallery-item canvas.gallery-thumb-fade,
.gallery-item img.gallery-thumb-fade {
    opacity: 0;
}

/* Hover effect with subtle zoom */
.gallery-item:hover canvas,
.gallery-item:hover img {
    transform: scale(1.02);
}

/* Hover zoom for rotated thumbnails.
 *
 * The rule above sets `transform: scale(1.02)` on the canvas itself.
 * That breaks for rotated tiles, because `_fitAdaptiveRotationWrapper`
 * writes the rotation+cover-scale into an INLINE `transform` on the
 * canvas, and inline styles outrank stylesheet rules - so the hover
 * scale silently no-ops on rotated thumbnails.
 *
 * Solution: when the canvas sits inside a rotation wrapper, scale the
 * WRAPPER instead. The rotation transform on the inner canvas is
 * untouched, the wrapper's scale composes on top, and the visual
 * "subtle zoom on hover" reads identically to non-rotated tiles. */
.gallery-item:hover .gallery-rotation-wrapper {
    transform: scale(1.02);
}
.gallery-rotation-wrapper {
    transition: transform 0.25s ease-out;
    will-change: transform;
}

/* Dark overlay on hover instead of grayscale */
.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gallery-overlay-hover);
    opacity: 0;
    transition: opacity 0.2s ease-out;
    pointer-events: none;
    z-index: 1;
    will-change: opacity;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* Ensure info overlay is above the dark overlay */
.gallery-item-info {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px;
    background: var(--gallery-info-gradient);
    color: var(--gallery-info-text);
    opacity: 0;
    transition: opacity 0.2s ease-out;
    pointer-events: none;
    z-index: 2;
}

.gallery-item:hover .gallery-item-info,
.gallery-item:focus-visible .gallery-item-info,
.gallery-item.focus-within-poly .gallery-item-info {
    opacity: 1;
}

/* On touch devices :hover never fires (or fires sticky after a tap), so
 * always show the info overlay there - the title and dimensions are far
 * more useful than the visual cleanliness of an empty card. */
@media (hover: none) {
    .gallery-item-info {
        opacity: 1;
        /* Slightly less aggressive gradient so it doesn't dominate the tile. */
        background: linear-gradient(to top, rgba(0, 0, 0, 0.55), rgba(0, 0, 0, 0));
    }
}

/* Keyboard focus on the tile itself: visible outline that doesn't
 * compete with the existing hover overlay. */
.gallery-item {
    outline: none;
}
.gallery-item:focus-visible {
    outline: 3px solid var(--accent-primary);
    outline-offset: -3px;
}

.gallery-item-title {
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.gallery-item-meta {
    font-size: 10px;
    color: var(--gallery-info-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

/* Dimension indicators */
.gallery-item-dims {
    display: flex;
    align-items: center;
    gap: 4px;
}

.gallery-item-dims .dim-original {
    font-weight: 500;
}

.gallery-item-dims .dim-arrow {
    opacity: 0.6;
    font-size: 8px;
}

.gallery-item-dims .dim-thumb {
    opacity: 0.7;
    font-size: 9px;
}

.gallery-item-dims .dim-display {
    opacity: 0.5;
    font-size: 8px;
    font-style: italic;
}

.gallery-item-bitdepth {
    background: var(--gallery-badge-bg);
    padding: 1px 4px;
    border-radius: 2px;
    font-size: 9px;
}

/* (The legacy .gallery-loading block has been removed. The single
 * combined loading indicator now lives in #gallery-status-bar above the
 * grid; see .gallery-status-* rules near the top. The .gallery-spinner
 * class below is still used by .gallery-modal-loading.) */

.gallery-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-light);
    border-top-color: var(--color-blue-digital);
    border-radius: 50%;
    animation: gallery-spin 0.7s cubic-bezier(0.5, 0.1, 0.5, 0.9) infinite;
}

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

/* Placeholder while thumbnail loads */
.gallery-item-placeholder {
    width: 100%;
    padding-bottom: 66.67%;
    background: var(--bg-muted);
    position: relative;
    overflow: hidden;
}

.gallery-item-placeholder::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--border-light) 50%,
        transparent 100%
    );
    opacity: 0.45;
    transform: translateX(-100%);
    animation: gallery-skeleton-sweep 1.6s linear infinite;
    will-change: transform;
    pointer-events: none;
}

@keyframes gallery-skeleton-sweep {
    to { transform: translateX(100%); }
}

/* Honour reduced-motion: drop the sweep entirely, keep the static tint. */
@media (prefers-reduced-motion: reduce) {
    .gallery-item-placeholder::after { animation: none; opacity: 0; }
    .gallery-item canvas.gallery-thumb-fade,
    .gallery-item img.gallery-thumb-fade { opacity: 1; }
}

/* Modal Styles */

/*
 * Defer expensive backdrop-filter blurs in the modal until its open
 * transition (transform + opacity scale-in) has settled.
 *
 * Animating a transformed element that contains blurred descendants forces
 * the compositor to re-blur on every tick of the transition - on a 4K
 * external display this can drop the open animation from 60fps to ~30fps.
 *
 * gallery.js adds .blur-ready to .gallery-modal-window after the content's
 * transitionend(transform). Until then we strip every backdrop-filter
 * inside the modal subtree. The blurred surfaces still work normally once
 * the modal has finished opening, and we strip the class again on close so
 * the close animation is also blur-free.
 */
.gallery-modal-window:not(.blur-ready) *,
.gallery-modal-window:not(.blur-ready) {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}
.gallery-modal-backdrop {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--gallery-overlay-transparent);
    z-index: 1000;
    transition: background-color 0.3s ease-out;
    cursor: pointer; /* Indicate clickable to close */
}

.gallery-modal-backdrop.visible {
    display: block;
    background-color: var(--gallery-modal-bg);
}

.gallery-modal-window {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1001;
    flex-direction: column;
    pointer-events: none; /* Allow clicks to pass through to backdrop */
}

.gallery-modal-window.visible {
    display: flex;
}

/* Modal content container - centers the image/canvas */
.gallery-modal-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    /* 
     * Desktop padding:
     * - Top: 50px for close button
     * - Sides: 40px for breathing room
     * - Bottom: 100px for info panel
     */
    padding: 50px 40px 100px 40px;
    box-sizing: border-box;
    flex-direction: column;
    gap: 15px;
    pointer-events: none;
    
    /* Animation */
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.35s ease-out, transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.gallery-modal-window.visible .gallery-modal-content {
    opacity: 1;
    transform: scale(1);
}

/* Modal image/canvas styling - for STILL images only */
.gallery-modal-content > canvas,
.gallery-modal-content > img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: var(--shadow-modal-image);
    pointer-events: auto;
    flex-shrink: 1;
    /* 8K (and other large) canvases are CSS-downscaled to fit the viewport.
     * Without an explicit hint some browsers (Chrome especially) use a
     * single-pass bilinear filter on <canvas>, which produces visible
     * staircase aliasing on diagonal/curved edges.  `high-quality` asks
     * for multi-pass / mipmap-quality resampling; the `auto` fallback
     * covers engines that don't recognise it yet. */
    image-rendering: high-quality;
    image-rendering: auto;
}

/* Wrapper for rotated modal images (90/270 deg) */
/* Ensures the rotated image respects viewport constraints */
.gallery-modal-rotated-wrapper {
    box-shadow: var(--shadow-modal-image);
    pointer-events: auto;
    /* Entrance animation removed - the parent .gallery-modal-content's
     * scale-in already provides the entrance feel, and stacking the
     * rotated-wrapper transform with another keyframe transform is both
     * visually redundant and expensive. */
}

.gallery-modal-rotated-wrapper canvas {
    /* Override default constraints - wrapper handles them */
    max-width: none !important;
    max-height: none !important;
    box-shadow: none;
    animation: none;
}

/* Modal header for close button positioning */
.gallery-modal-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: flex-end;
    padding: 15px 20px;
    z-index: 1002;
    pointer-events: none;
}

/* Close button.
 *
 * Now a real <button> for keyboard a11y (Enter/Space, focus ring). The
 * resets below strip the UA chrome so the existing icon-only design is
 * preserved.
 */
.gallery-modal-quit {
    width: 32px;
    height: 32px;
    padding: 0;
    border: 0;
    background-color: transparent;
    background-image: url("../img/close-icon.png");
    background-size: contain;
    background-repeat: no-repeat;
    cursor: pointer;
    opacity: 0.8;
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: auto;
    -webkit-tap-highlight-color: transparent;
}

.gallery-modal-quit:hover {
    opacity: 1;
    transform: rotate(90deg);
}

.gallery-modal-quit:active {
    transform: rotate(90deg) scale(0.9);
}

.gallery-modal-quit:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 4px;
    border-radius: 4px;
}

.gallery-modal-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: var(--gallery-info-text-muted);
    pointer-events: auto;
}

.gallery-modal-loading.hidden {
    display: none;
}

/* Modal info panel - centered at bottom */
.gallery-modal-info-panel {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--gallery-info-panel-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 12px 20px;
    color: var(--gallery-info-text);
    text-align: center;
    pointer-events: auto;
    max-width: 90%;
    z-index: 1002;
    display: flex;
    flex-direction: column;
    align-items: center;
    
    /* Animation */
    opacity: 0;
    animation: infoPanelEnter 0.4s ease-out 0.3s forwards;
}

/* Back button positioned to the right of info panel */
.gallery-modal-back-btn {
    background: rgba(255, 42, 0, 0.856);
    position: absolute;
    right: -70px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gallery-info-text-muted);
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    transition: color 0.2s ease, background 0.2s ease;
    white-space: nowrap;
}

.gallery-modal-back-btn:hover {
    color: var(--gallery-info-text);
    background: var(--gallery-btn-bg);
}

@keyframes infoPanelEnter {
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.gallery-modal-info-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 6px;
}

.gallery-modal-info-title {
    font-size: 16px;
    font-weight: 500;
}

.gallery-modal-info-details {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    font-size: 13px;
    color: var(--gallery-info-text-muted);
    flex-wrap: wrap;
}

.gallery-modal-info-details .info-sep {
    opacity: 0.4;
}

.gallery-modal-info-details .info-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.gallery-modal-info-details .info-item.info-none {
    font-style: italic;
    opacity: 0.6;
}

.gallery-modal-info-details .info-label {
    opacity: 0.6;
    font-size: 11px;
}

/* Add format badge styling */

.gallery-modal-info-details .info-format {
    background: var(--gallery-format-badge-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 500;
}

/* Info button for full details */
.gallery-modal-info-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: var(--gallery-btn-bg);
    box-shadow: 0px 0px 2px var(--bs-info-bg-subtle);
    border-radius: 50%;
    font-size: 12px;
    font-weight: 300;
    cursor: pointer;
    transition: background 0.2s ease;
}

.gallery-modal-info-btn:hover {
    background: var(--gallery-btn-hover-bg);
}

.gallery-modal-info-btn:active {
    background: var(--gallery-btn-active-bg);
}

/* HDR badge styling - clickable button */
.gallery-modal-info-details .info-hdr-badge {
    background: linear-gradient(135deg, #ff6b35 0%, #f7c548 50%, #ff6b35 100%);
    background-size: 200% 200%;
    animation: hdr-shimmer 3s ease infinite;
    color: #000;
    padding: 2px 10px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 11px;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: box-shadow 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative; /* Parent for tooltip positioning */
}

.gallery-modal-info-details .info-hdr-badge:hover {
    box-shadow: 0 2px 8px rgba(255, 107, 53, 0.4);
}

.gallery-modal-info-details .info-hdr-badge .hdr-icon {
    display: none;
}

/* HDR badge active state (when native view is enabled) */
.gallery-modal-info-details .info-hdr-badge.active {
    background: linear-gradient(135deg, #4caf50 0%, #81c784 50%, #4caf50 100%);
    animation: none;
    box-shadow: 0 0 12px rgba(76, 175, 80, 0.5);
}

.gallery-modal-info-details .info-hdr-badge.active .hdr-icon {
    opacity: 1;
}

@keyframes hdr-shimmer {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* HDR Tooltip Bubble - positioned relative to badge */
.hdr-tooltip-bubble {
    position: absolute;
    bottom: calc(100% + 10px); /* Position above the badge with 10px gap */
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.95) 0%, rgba(247, 197, 72, 0.95) 100%);
    color: #000;
    padding: 10px 32px 10px 14px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    z-index: 100010;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: auto;
}

.hdr-tooltip-bubble.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Arrow pointing down to badge */
.hdr-tooltip-bubble::before {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-top: 8px solid rgba(247, 197, 72, 0.95);
}

/* Close button */
.hdr-tooltip-close {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 6px;
    width: 16px;
    height: 16px;
    min-width: 16px;
    min-height: 16px;
    max-width: 16px;
    max-height: 16px;
    background: rgba(0, 0, 0, 0.2);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: bold;
    color: #000;
    transition: background 0.2s ease;
    line-height: 1;
    padding: 0;
    box-sizing: border-box;
    flex-shrink: 0;
}

.hdr-tooltip-close:hover {
    background: rgba(0, 0, 0, 0.35);
}

/* Native HDR view container */
.gallery-native-hdr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Allow clicks to pass through to backdrop */
}

.gallery-native-hdr-container img {
    max-width: calc(100% - 80px);
    max-height: calc(100vh - 180px);
    object-fit: contain;
    pointer-events: auto; /* But image itself is clickable */
}

/* Native view status text */
.gallery-native-view-status {
    color: var(--gallery-info-text-muted);
    font-size: 13px;
    text-align: center;
    margin: 16px 0 40px 0;
    padding: 0;
    pointer-events: none;
}

/* Side-by-side compare view */
.gallery-compare-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    width: 100%;
    height: 100%;
    padding: 20px 40px;
    box-sizing: border-box;
}
.gallery-compare-pane {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 0;
    position: relative;
}
.gallery-compare-pane canvas,
.gallery-compare-pane .heif-transformed-wrapper,
.gallery-compare-pane img {
    max-width: 100%;
    max-height: calc(100vh - 220px);
    object-fit: contain;
    display: block;
}
.gallery-compare-divider {
    width: 2px;
    align-self: stretch;
    background: var(--gallery-btn-border, rgba(255,255,255,0.2));
    margin: 40px 12px;
    border-radius: 1px;
}
.gallery-compare-label {
    color: var(--gallery-info-text-muted, #aaa);
    font-size: 12px;
    margin-top: 8px;
    text-align: center;
}

/* Native HDR success message - legacy, kept for compatibility */
.gallery-native-hdr-success {
    margin-top: 12px;
    padding: 8px 16px;
    background: var(--gallery-btn-bg);
    border: 1px solid var(--gallery-btn-border);
    border-radius: 6px;
    color: var(--gallery-info-text);
    font-size: 13px;
    text-align: center;
}

/* Native HDR fallback panel */
.gallery-native-hdr-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px;
    background: var(--gallery-full-info-bg);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    max-width: 400px;
    pointer-events: auto;
}

.gallery-native-hdr-fallback-title {
    color: var(--gallery-info-text);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.gallery-native-hdr-fallback-desc {
    color: var(--gallery-info-text-muted);
    font-size: 14px;
    text-align: center;
    margin-bottom: 20px;
    line-height: 1.5;
}

.gallery-native-hdr-fallback-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    pointer-events: auto;
}

.gallery-native-hdr-fallback-buttons .gallery-burst-btn {
    pointer-events: auto;
    position: relative;
    z-index: 10;
}

.gallery-native-hdr-btn-primary {
    background: var(--gallery-btn-bg);
    box-shadow: 1px 1px 14px var(--bs-gray-900);
    transition: background 0.2s ease, box-shadow 0.2s ease;
}

.gallery-native-hdr-btn-primary:hover {
    background: var(--gallery-btn-active-bg);
    box-shadow: 1px 1px 14px rgba(100, 180, 255, 0.4);
}

.gallery-native-hdr-fallback-hint {
    margin-top: 20px;
    color: var(--panel-dark-text-subtle);
    font-size: 12px;
    text-align: center;
}

/* No decoder placeholder */
.gallery-no-decoder-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 30px;
    background: var(--bs-border-color-translucent);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    border: 2px solid var(--bs-danger-text-emphasis);
    box-shadow: 1px 1px 14px var(--bs-danger-text-emphasis);
    min-width: 300px;
    min-height: 200px;
    pointer-events: auto;
}

.gallery-no-decoder-title {
    color: var(--gallery-info-text);
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 10px;
}

.gallery-no-decoder-desc {
    color: var(--gallery-info-text-muted);
    font-size: 14px;
    text-align: center;
    margin-bottom: 10px;
}

.gallery-no-decoder-codec {
    color: var(--panel-dark-text-subtle);
    font-size: 12px;
    margin-bottom: 15px;
}

.gallery-no-decoder-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 10px;
    pointer-events: auto;
}

.gallery-no-decoder-buttons .gallery-burst-btn {
    pointer-events: auto;
    position: relative;
    z-index: 10;
    background: var(--gallery-btn-bg);
}

.gallery-no-decoder-meta-notice {
    margin-top: 20px;
    color: var(--panel-dark-text-subtle);
    font-size: 12px;
    text-align: center;
}

/* No decoder title row with info button */
.gallery-no-decoder-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.gallery-no-decoder-title-row .gallery-no-decoder-title {
    margin-bottom: 0;
}

.gallery-no-decoder-info-btn {
    background: transparent;
    border: none;
    color: var(--gallery-info-text-muted);
    font-size: 17px;
    font-weight: 300;
    text-decoration: none;
    cursor: pointer;
    padding: 2px 6px;
    margin-left: 4px;
    transition: color 0.2s ease;
    pointer-events: auto;
    opacity: 0.7;
    text-shadow: 0 0 10px var(--panel-dark-btn-hover);
}

.gallery-no-decoder-info-btn:hover {
    color: var(--gallery-info-text);
    text-decoration: underline;
    opacity: 1;
}

/* Unified native fallback panel */
.gallery-native-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px 30px;
    background: var(--bs-border-color-translucent);
    backdrop-filter: blur(10px);
    border-radius: 10px;
    border: 2px solid var(--bs-danger-text-emphasis);
    min-width: 300px;
    min-height: 200px;
    pointer-events: auto;
}

.gallery-native-fallback-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.gallery-native-fallback-title {
    color: var(--gallery-info-text);
    font-size: 18px;
    font-weight: 600;
}

.gallery-native-fallback-info-btn {
    background: transparent;
    border: none;
    color: var(--gallery-info-text-muted);
    font-size: 13px;
    font-weight: 400;
    text-decoration: none;
    cursor: pointer;
    padding: 2px 6px;
    margin-left: 4px;
    transition: color 0.2s ease;
    pointer-events: auto;
    opacity: 0.7;
}

.gallery-native-fallback-info-btn:hover {
    color: var(--gallery-info-text);
    text-decoration: underline;
    opacity: 1;
}

.gallery-native-fallback-desc {
    color: var(--gallery-info-text-muted);
    font-size: 14px;
    text-align: center;
    margin-bottom: 10px;
}

.gallery-native-fallback-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 10px;
    pointer-events: auto;
}

.gallery-native-fallback-buttons .gallery-burst-btn {
    pointer-events: auto;
    position: relative;
    z-index: 10;
    background: var(--gallery-btn-bg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

/* Red back button for native fallback (same style as native view) */
.gallery-native-fallback-back-btn {
    background: rgba(255, 42, 0, 0.856);
    color: var(--gallery-info-text-muted);
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 13px;
    margin-top: 15px;
    transition: color 0.2s ease, background 0.2s ease;
    white-space: nowrap;
    pointer-events: auto;
}

.gallery-native-fallback-back-btn:hover {
    color: var(--gallery-info-text);
    background: var(--gallery-btn-bg);
}

/* Info modal overlay */
.gallery-info-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10001;
    backdrop-filter: blur(2px);
    animation: infoModalOverlayFadeIn 0.2s ease-out;
}

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

.gallery-info-modal {
    position: relative;
    background: var(--gallery-full-info-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 28px 32px;
    max-width: 500px;
    width: 90%;
    height: 550px;
    overflow-y: auto;
    overflow-x: hidden;
    color: var(--gallery-info-text);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--gallery-btn-border);
    animation: infoModalSlideIn 0.25s ease-out;
    /* Hide scrollbar */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE/Edge */
}

.gallery-info-modal::-webkit-scrollbar {
    display: none; /* Chrome/Safari/Opera */
}

/* Close button - sticky at top right */
.gallery-info-modal-close {
    position: sticky;
    top: 0;
    float: right;
    margin-top: -12px;
    margin-right: -20px;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: var(--gallery-full-info-bg);
    border: none;
    color: var(--gallery-info-text-muted);
    font-size: 22px;
    font-weight: 300;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease, background 0.2s ease;
    line-height: 1;
    z-index: 10;
}

.gallery-info-modal-close:hover {
    color: var(--gallery-info-text);
    background: var(--gallery-btn-bg);
}

/* Scroll indicators */
.gallery-info-modal-scroll-indicator {
    position: sticky;
    left: 0;
    right: 0;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 2;
    margin-left: -32px;
    margin-right: -32px;
    width: calc(100% + 64px);
}

.gallery-info-modal-scroll-indicator.visible {
    opacity: 1;
}

.gallery-info-modal-scroll-indicator.top {
    top: -28px;
    margin-top: -28px;
    background: linear-gradient(to bottom, var(--gallery-full-info-bg) 50%, transparent 100%);
}

.gallery-info-modal-scroll-indicator.bottom {
    bottom: -28px;
    margin-bottom: -28px;
    background: linear-gradient(to top, var(--gallery-full-info-bg) 50%, transparent 100%);
}

.gallery-info-modal-scroll-indicator svg {
    width: 20px;
    height: 20px;
    fill: var(--gallery-info-text);
    opacity: 0.85;
}

@keyframes infoModalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.gallery-info-modal-title {
    margin: 0 0 16px 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--gallery-info-text);
}

.gallery-info-modal-content {
    font-size: 14px;
    line-height: 1.6;
    color: var(--gallery-info-text-muted);
}

.gallery-info-modal-content p {
    margin: 0 0 12px 0;
}

.gallery-info-modal-content strong {
    color: var(--gallery-info-text);
}

.gallery-info-modal-content ul {
    margin: 8px 0 12px 0;
    padding-left: 20px;
}

.gallery-info-modal-content li {
    margin-bottom: 6px;
}

/* Full info panel (shown when clicking i) */
.gallery-modal-full-info {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(8px) scale(0.95);
    transform-origin: bottom center;
    background: var(--gallery-full-info-bg);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 16px 20px;
    color: var(--gallery-info-text);
    max-width: 400px;
    width: max-content;
    max-height: 60vh;
    overflow-y: auto;
    z-index: 1003;
    pointer-events: auto;
    
    /* Animation properties */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease-out, 
                transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), 
                visibility 0.25s ease-out;
}

.gallery-modal-full-info.visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0) scale(1);
}

.gallery-modal-full-info h4 {
    margin: 0 0 12px 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--gallery-info-text-muted);
    border-bottom: 1px solid var(--gallery-full-info-border);
    padding-bottom: 8px;
}

.gallery-modal-full-info-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 6px 16px;
    font-size: 12px;
}

.gallery-modal-full-info-grid .info-key {
    color: var(--gallery-info-key-color);
    text-align: right;
}

.gallery-modal-full-info-grid .info-value {
    color: var(--gallery-info-text-muted);
}

/* Error state */
.gallery-item-error {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding-bottom: 66.67%;
    background: var(--gallery-error-bg);
    color: var(--gallery-error-text);
    font-size: 11px;
}

/* Type badges */
.gallery-item-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    background: var(--gallery-item-badge-bg);
    color: var(--gallery-info-text);
    padding: 3px 6px;
    border-radius: 3px;
    font-size: 11px;
    z-index: 3;
    pointer-events: none;
    transition: transform 0.2s ease;
}

.gallery-item:hover .gallery-item-badge {
    transform: scale(1.05);
}

/* Codec badge (VVC) - positioned left of the type badge */
.gallery-item-badge-codec {
    right: auto;
    left: 4px;
    background: rgba(0, 140, 60, 0.8);
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* SlimHEIF (mif3) badge - teal, stacks next to codec badge on the left */
.gallery-item-badge-slim {
    right: auto;
    left: 4px;
    background: rgba(0, 140, 140, 0.8);
    color: #fff;
    font-weight: 600;
    letter-spacing: 0.5px;
}

/* When both codec and slim badges are present, offset slim below codec */
.gallery-item-badge-codec + .gallery-item-badge-slim {
    top: 28px;
}

/* Modal grid for multi-image display */
.gallery-modal-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    align-content: center;
    gap: 10px;
    max-width: 100%;
    max-height: 100%;
    overflow-y: auto;
    padding: 10px;
    pointer-events: auto;
    flex: 1;
    min-height: 0;
}

.gallery-modal-grid canvas {
    box-shadow: var(--shadow-modal-image);
    animation: gridItemEnter 0.4s ease-out backwards;
}

.gallery-modal-grid canvas:nth-child(1) { animation-delay: 0.1s; }
.gallery-modal-grid canvas:nth-child(2) { animation-delay: 0.15s; }
.gallery-modal-grid canvas:nth-child(3) { animation-delay: 0.2s; }
.gallery-modal-grid canvas:nth-child(4) { animation-delay: 0.25s; }
.gallery-modal-grid canvas:nth-child(n+5) { animation-delay: 0.3s; }

@keyframes gridItemEnter {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Burst view mode controls */
.gallery-burst-controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    pointer-events: auto;
    flex-shrink: 0;
    
    /* Entrance animation */
    animation: fadeInUp 0.3s ease-out backwards;
    animation-delay: 0.2s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.gallery-burst-btn {
    background: var(--gallery-btn-bg);
    border: none;
    color: var(--gallery-info-text);
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.gallery-burst-btn:hover {
    background: var(--gallery-btn-hover-bg);
}

.gallery-burst-btn:active {
    background: var(--gallery-btn-active-bg);
}

/* Audio controls styling */
.gallery-burst-controls .audio-time {
    padding: 0 15px;
    color: var(--gallery-info-text);
    font-family: monospace;
    min-width: 80px;
    font-size: 13px;
}

.gallery-burst-controls .audio-volume-label {
    padding-left: 15px;
    color: var(--fg-muted, #aaa);
}

.gallery-burst-controls .audio-status-label {
    color: var(--fg-muted, #888);
    padding: 0 10px;
}

.gallery-burst-controls input[type="range"] {
    width: 80px;
    vertical-align: middle;
    margin-left: 5px;
    cursor: pointer;
}

.gallery-burst-btn.active {
    background: var(--gallery-btn-active-bg);
    border-color: var(--gallery-btn-active-border);
}

/* Album/Favorites controls - multiple control rows */
.gallery-album-controls {
    display: flex;
    gap: 8px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    pointer-events: auto;
    flex-shrink: 0;
    margin-bottom: 8px;
}

.gallery-album-label {
    padding: 0 12px;
    color: var(--gallery-info-text);
    font-weight: 500;
    min-width: 100px;
    text-align: center;
    font-size: 13px;
}

/* Item ID buttons bar - wrappable */
.gallery-album-items-bar {
    display: flex;
    gap: 5px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    pointer-events: auto;
    margin-bottom: 8px;
    max-width: 100%;
}

.gallery-album-id-btn {
    background: var(--gallery-btn-bg);
    border: none;
    color: var(--gallery-info-text);
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-family: monospace;
    min-width: 50px;
    transition: background 0.2s ease;
}

.gallery-album-id-btn:hover {
    background: var(--gallery-btn-hover-bg);
}

.gallery-album-id-btn.active {
    background: var(--gallery-btn-active-bg);
}

/* Burst thumbnail strip */
.gallery-burst-strip {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 8px;
    background: var(--gallery-burst-strip-bg);
    max-width: 100%;
    height: 80px;
    min-height: 80px;
    pointer-events: auto;
    border-radius: 6px;
    flex-shrink: 0;
    align-items: center;
    scrollbar-width: thin;
}

.gallery-burst-strip::-webkit-scrollbar {
    height: 4px;
}

.gallery-burst-strip::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 2px;
}

.gallery-burst-strip::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
}

.gallery-burst-strip canvas {
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.2s ease, transform 0.2s ease;
    flex-shrink: 0;
}

.gallery-burst-strip canvas:hover {
    border-color: var(--gallery-thumb-border-hover);
    transform: translateY(-3px);
}

.gallery-burst-strip canvas.active {
    border-color: var(--gallery-thumb-border-active);
    transform: translateY(-3px);
}

/* Burst main container - holds the primary image */
.gallery-burst-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    min-height: 0;
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
}

.gallery-burst-main canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: var(--shadow-modal-image);
}

.gallery-burst-indicator {
    margin-top: 8px;
    color: var(--fg-muted, #888);
    font-size: 13px;
    flex-shrink: 0;
}

/* Collection view styles */
.gallery-collection-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 100%;
    flex: 1;
    min-height: 0;
    gap: 15px;
}

.gallery-collection-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 0;
    min-width: 0;
    max-width: 100%;
    width: 100%;
}

.gallery-collection-canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    box-shadow: var(--shadow-modal-image);
    animation: fadeIn 0.3s ease-out;
}

.gallery-collection-indicator {
    color: var(--bg-input);
    font-size: 13px;
    flex-shrink: 0;
    margin-top: 8px;
    text-align: center;
}

.gallery-collection-strip {
    display: flex;
    /* padding: 2px 54px; */
    gap: 7px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 10px 12px;
    background: var(--gallery-burst-strip-bg);
    max-width: 100%;
    /* height: auto; */
    min-height: 70px;
    max-height: 90px;
    pointer-events: auto;
    border-radius: 8px;
    scroll-behavior: smooth;
    flex-shrink: 0;
    align-items: center;
    /* margin-bottom: 15px; */
    scrollbar-width: thin;
    /* Horizontal scrollbar styling */
    scrollbar-width: thin;
}

.gallery-collection-strip::-webkit-scrollbar {
    height: 6px;
}

.gallery-collection-strip::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.gallery-collection-strip::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
}

.gallery-collection-thumb {
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: 4px;
    transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    flex-shrink: 0;
}

.gallery-collection-thumb:hover {
    border-color: var(--gallery-thumb-border-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.gallery-collection-thumb.active {
    border-color: var(--gallery-thumb-border-active);
    box-shadow: 0 4px 12px rgba(74, 158, 255, 0.4);
}

/* Responsive column counts */
@media (max-width: 1200px) {
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 900px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
        width: calc(100% - 40px);
    }
}

@media (max-width: 576px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        width: calc(100% - 20px);
    }
    
    .gallery-burst-controls {
        flex-wrap: wrap;
    }
    
    .gallery-modal-info-panel {
        padding: 10px 16px;
    }
    
    .gallery-modal-info-details {
        font-size: 11px;
    }
}

/* Mobile landscape burst controls - vertical layout on right side */
@media (max-width: 900px) and (orientation: landscape) {
    .gallery-modal-content{
        padding: max(36px, 6vh) 1% 1% 1%;
    }
    /* Burst view ONLY: special layout with strip on left, controls on right */
    .gallery-modal-content.burst-view {
        flex-direction: row !important;
        padding: max(36px, 6vh) 8px 8px 8px !important;
        gap: 8px !important;
    }
    
    .gallery-modal-content.burst-view .gallery-burst-controls {
        position: fixed;
        right: 1%;
        top: 50%;
        transform: translateY(-50%);
        flex-direction: column;
        gap: 5px;
        z-index: 1001;
        background: rgba(0, 0, 0, 0.6);
        padding: 6px;
        border-radius: 6px;
        animation: none;
    }
    
    .gallery-modal-content.burst-view .gallery-burst-btn {
        font-size: 13px;
        white-space: nowrap;
    }
    
    /* Burst strip - vertical, auto-height, centered */
    .gallery-modal-content.burst-view .gallery-burst-strip {
        flex-direction: column !important;
        overflow-x: hidden !important;
        overflow-y: auto !important;
        height: auto !important;
        max-height: calc(100vh - 50px) !important;
        min-height: auto !important;
        width: 55px !important;
        min-width: 55px !important;
        order: -1;
        align-self: center;
        padding: 6px !important;
        border-radius: 6px !important;
    }
    
    .gallery-modal-content.burst-view .gallery-burst-strip canvas {
        width: 40px !important;
        height: auto !important;
    }
    
    .gallery-modal-content.burst-view .gallery-burst-main {
        flex: 1;
        position: relative;
        min-width: 0;
    }
    
    .gallery-modal-content.burst-view .gallery-burst-main canvas {
        max-width: calc(100vw - 150px) !important;
        max-height: calc(100vh - 16px) !important;
    }
    
    /* Burst indicator - visible overlay inside main */
    .gallery-modal-content.burst-view .gallery-burst-indicator {
        position: absolute;
        top: 1%;
        left: 50%;
        transform: translateX(-50%);
        background: rgba(0, 0, 0, 0.6);
        padding: 3px 8px;
        border-radius: 4px;
        font-size: 9px;
        white-space: nowrap;
        color: var(--gallery-info-text);
    }
    
    /* Grid view in landscape */
    .gallery-modal-grid {
        max-height: calc(100vh - 20px) !important;
    }
    
    .gallery-modal-grid canvas {
        max-height: 100px;
        max-width: 100px;
    }
}

@media (max-width: 400px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item-info {
        padding: 6px;
    }
    
    .gallery-item-title {
        font-size: 11px;
    }
    
    .gallery-item-meta {
        font-size: 9px;
    }
    
    .gallery-item-badge {
        font-size: 10px;
        padding: 2px 4px;
    }
}
/* =====================================================================
 * Layout-mode: Native pixels.
 *
 * `.gallery-grid.gallery-mode-native` switches the masonry off and shows
 * each thumbnail at its real embedded bitmap size. Tiles flow in a
 * justified flexbox so they pack densely without scaling.
 *
 * This actually fulfils the page subtitle's promise. Rules apply only
 * in this mode so the default Adaptive masonry is untouched.
 * ===================================================================== */
.gallery-grid.gallery-mode-native {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 6px;
    grid-template-columns: none;
    grid-auto-rows: auto;
}

.gallery-grid.gallery-mode-native .gallery-item {
    /* Ignore the masonry span; the tile sizes itself to its bitmap. */
    grid-row-end: auto;
    width: auto;
    flex: 0 0 auto;
    /* No content-visibility skipping here - the layout depends on real
     * widths to flow correctly. */
    content-visibility: visible;
    contain-intrinsic-size: auto;
}
.gallery-grid.gallery-mode-native .gallery-item canvas,
.gallery-grid.gallery-mode-native .gallery-item img {
    /* Display each canvas at its intrinsic pixel size, period. */
    width: auto;
    height: auto;
    max-width: none;
    /* Crisp rendering so the bytes-truth promise is taken literally. */
    image-rendering: pixelated;
}
/* Rotation wrapper for 90/270-rotated tiles. JS sets explicit pixel
 * dimensions on this element in native mode (see _wrapRotatedCanvas);
 * make sure flexbox treats it as fixed-size content rather than trying
 * to stretch or fit it inside the parent tile. Without this rule the
 * `.gallery-item canvas` block higher in the file (width:100%/height:100%)
 * would still apply to the inner canvas and fight the inline transform. */
.gallery-grid.gallery-mode-native .gallery-rotation-wrapper {
    flex: 0 0 auto;
    overflow: visible;
}
.gallery-grid.gallery-mode-native .gallery-item-placeholder {
    /* In native mode the real width/height come from the decoded bitmap.
     * Until the JS pre-measure runs (sets these inline based on cached
     * primary dims and the thumbnail size cap) we hold a small neutral
     * square so the row doesn't visibly stretch. _applyPlaceholderAspect
     * overrides both width and padding-bottom inline as soon as fileInfo
     * arrives. */
    width: 200px;
    padding-bottom: 200px;
    height: 0;
}

/* =====================================================================
 * Deferred-preview tile (no embedded thumbnail + huge primary).
 *
 * Decoding an 8K primary just to fill a 250px tile is wasteful and the
 * main reason the gallery felt slow on certain conformance files.
 * For files that meet the criteria (no `thmb`, large primary), we show
 * a dedicated "Heavy preview" card and only decode when the user opts
 * in by clicking. JS handles the click - this is purely the look.
 * ===================================================================== */
.gallery-item-deferred {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px;
    background: linear-gradient(135deg,
        var(--bg-muted) 0%,
        var(--border-light) 100%);
    color: var(--fg-muted);
    text-align: center;
    cursor: pointer;
    z-index: 0;
}
.gallery-item-deferred-icon {
    width: 28px;
    height: 28px;
    opacity: 0.6;
}
.gallery-item-deferred-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--fg-default);
}
.gallery-item-deferred-hint {
    font-size: 10px;
    opacity: 0.75;
    line-height: 1.35;
}
.gallery-item-deferred-action {
    margin-top: 4px;
    padding: 5px 12px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-blue-digital, #fff);
    background: var(--accent-primary);
    border: 0;
    border-radius: 999px;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: filter 0.18s ease;
}
.gallery-item-deferred-action:hover { filter: brightness(1.1); }
.gallery-item-deferred-action:focus-visible {
    outline: 2px solid var(--fg-default);
    outline-offset: 2px;
}

/* =====================================================================
 * Set-switch crossfade.
 *
 * The previous behaviour wiped the grid (innerHTML = '') and rebuilt it
 * synchronously, producing a hard flash. `.is-switching` fades the grid
 * out, JS swaps content, then removes the class to fade back in.
 * Backed by a real opacity transition so it's compositor-only.
 * ===================================================================== */
.gallery-grid {
    transition: opacity 0.2s ease;
}
.gallery-grid.is-switching {
    opacity: 0;
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    .gallery-grid { transition: none; }
    .gallery-status-bar { transition: none; }
}