/* ══════════════════════════════════════════════════════════════════
   Gallery page — single-session viewer with click-to-swap hero.
   No lightbox. Mobile: large photo on top, horizontal-scroll thumbs below.
   ══════════════════════════════════════════════════════════════════ */

:root {
    --gx-radius: 14px;
    --gx-pad: 18px;
    --gx-bg-pane: #ffffff;
    --gx-bg-soft: #f8fafc;
    --gx-border: #e2e8f0;
}

body.gallery-page {
    margin: 0;
    background: linear-gradient(180deg, #f8fafc, #fff 280px);
    font-family: 'Inter', system-ui, sans-serif;
    color: var(--slate-900);
    min-height: 100vh;
    display: flex; flex-direction: column;
}

/* ─── Top bar ─── */
.gx-top {
    background: linear-gradient(135deg, #1e3a8a, #1e40af);
    color: #fff;
    box-shadow: 0 1px 4px rgba(15,23,42,0.1);
    position: sticky; top: 0; z-index: 50;
    /* Inner content constrained to 1200px so icons/links don't sprawl on wide screens */
    display: flex; align-items: center; gap: 12px;
    padding: 10px max(18px, calc((100vw - 1200px) / 2));
}
.gx-back {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 12px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 7px;
    color: #fff; text-decoration: none;
    font: 700 12px 'Inter', sans-serif;
    transition: background 0.15s;
}
.gx-back:hover { background: rgba(255,255,255,0.22); }
.gx-top-title {
    flex: 1; min-width: 0;
    display: flex; align-items: center; gap: 4px;
    position: relative;
}
.gx-top-title-text {
    font: 700 14px 'Inter', sans-serif;
    color: #fff;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    max-width: 60vw;
}
.gx-top-sessions-btn {
    background: transparent;
    border: none;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: background 0.15s;
}
.gx-top-sessions-btn:hover { background: rgba(255,255,255,0.12); color: #fff; }
.gx-top-sessions-pop {
    position: absolute; top: calc(100% + 6px); left: 0;
    width: 320px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(15,23,42,0.2);
    border: 1px solid var(--slate-200);
    z-index: 100;
    overflow: hidden;
}
.gx-top-sessions-search {
    width: 100%; box-sizing: border-box;
    padding: 10px 12px;
    border: none;
    border-bottom: 1px solid var(--slate-200);
    font: 500 13px 'Inter', sans-serif;
    color: var(--slate-900);
    outline: none;
}
.gx-top-sessions-list {
    list-style: none; margin: 0; padding: 4px;
    max-height: 360px; overflow-y: auto;
}
.gx-top-sessions-list li a {
    display: flex; justify-content: space-between; align-items: center; gap: 12px;
    padding: 8px 10px;
    border-radius: 6px;
    text-decoration: none;
    color: var(--slate-800);
    font: 500 12.5px 'Inter', sans-serif;
}
.gx-top-sessions-list li a:hover { background: var(--slate-100); }
.gx-top-sessions-list li a.is-current { background: var(--brand-50); color: var(--brand-700); font-weight: 700; }
.gx-top-sessions-name { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.gx-top-sessions-meta { font-size: 10.5px; color: var(--slate-500); white-space: nowrap; }

.gx-top-actions { display: flex; gap: 6px; }

.gx-btn-ghost {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 12px;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.22);
    border-radius: 7px;
    color: #fff;
    font: 700 12px 'Inter', sans-serif;
    cursor: pointer;
    transition: background 0.15s;
}
.gx-btn-ghost:hover { background: rgba(255,255,255,0.22); }

.gx-btn-primary {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px;
    background: linear-gradient(135deg, var(--brand-500), var(--brand-700));
    border: none;
    border-radius: 8px;
    color: #fff;
    font: 700 13px 'Inter', sans-serif;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(37,99,235,0.25);
    transition: transform 0.15s, box-shadow 0.15s;
}
.gx-btn-primary:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(37,99,235,0.35); }

/* ─── Empty state ─── */
.gx-empty {
    flex: 1;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    gap: 14px;
    color: var(--slate-500);
    text-align: center;
    padding: 40px;
}
.gx-empty svg { color: var(--slate-300); }
.gx-empty-title { font: 700 16px 'Inter', sans-serif; color: var(--slate-700); }

/* ─── Main layout: hero on top, strip below ─── */
.gx-main {
    flex: 1;
    display: flex; flex-direction: column;
    padding: 16px 20px 24px;
    max-width: 1500px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
    gap: 16px;
    min-height: 0;
}

/* HERO area: image left, details right (desktop). On mobile: stacked */
.gx-hero {
    display: grid;
    grid-template-columns: 1fr 360px;
    gap: 18px;
    flex: 1;
    min-height: 0;
}
.gx-hero-media {
    position: relative;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    border-radius: var(--gx-radius);
    overflow: hidden;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 8px 28px rgba(15,23,42,0.18);
    /* Fixed height so the media has a stable target to fill */
    height: 70vh;
    max-height: 760px;
    min-height: 360px;
}

/* Two layered media slots so we can crossfade between them */
.gx-hero-slot {
    position: absolute;
    inset: 0;
    display: flex; align-items: center; justify-content: center;
    opacity: 0;
    transition: opacity 1.5s ease;
    pointer-events: none;
}
.gx-hero-slot.is-active {
    opacity: 1;
    pointer-events: auto;
}
.gx-hero-slot img,
.gx-hero-slot video {
    display: block;
    /* Default = portrait/square: contain (black on sides allowed) */
    width: 100%; height: 100%;
    object-fit: contain;
}
/* Landscape orientation: fill height + crop sides → no black bars */
.gx-hero-slot.is-landscape img,
.gx-hero-slot.is-landscape video {
    object-fit: cover;
}
.gx-hero-slot audio { width: 80%; }

/* Hide non-active media types within a slot via [hidden] (CRITICAL: the
   HTML hidden attribute would otherwise be overridden by display: block) */
.gx-hero-slot [hidden] { display: none !important; }
.gx-hero-nav {
    position: absolute;
    top: 50%; transform: translateY(-50%);
    width: 38px; height: 38px;
    background: rgba(0,0,0,0.55);
    color: #fff;
    border: none;
    border-radius: 50%;
    font: 700 22px 'Inter', sans-serif;
    cursor: pointer;
    line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.15s;
}
.gx-hero-nav:hover { background: rgba(0,0,0,0.75); }
.gx-hero-nav-prev { left: 12px; }
.gx-hero-nav-next { right: 12px; }
.gx-hero-nav:disabled { opacity: 0.3; cursor: not-allowed; }

/* DETAILS panel */
.gx-details {
    background: var(--gx-bg-pane);
    border: 1px solid var(--gx-border);
    border-radius: var(--gx-radius);
    padding: 18px;
    box-shadow: 0 1px 3px rgba(15,23,42,0.04);
    display: flex; flex-direction: column;
    min-width: 0;
    height: fit-content;
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}
.gx-eyebrow {
    display: flex; align-items: center; gap: 7px;
    font: 800 10px 'Inter', sans-serif;
    text-transform: uppercase; letter-spacing: 0.12em;
    color: var(--slate-500);
    margin-bottom: 8px;
}
.gx-eyebrow-dot { width: 6px; height: 6px; border-radius: 50%; background: #34d399; box-shadow: 0 0 0 3px rgba(52,211,153,0.18); }
.gx-eyebrow-sep { opacity: 0.5; }
.gx-title {
    font: 700 17px 'Inter', sans-serif;
    color: var(--slate-900);
    line-height: 1.35;
    margin: 0 0 14px;
    word-break: break-word;
}

/* Chip row — model, dims, refs, etc. */
.gx-chips {
    display: flex; flex-wrap: wrap; gap: 6px;
    margin-bottom: 16px;
}
.gx-chip {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 4px 10px;
    background: var(--slate-100);
    border-radius: 99px;
    font: 600 11px 'Inter', sans-serif;
    color: var(--slate-700);
}
.gx-chip-icon { color: var(--slate-500); font-size: 11px; }
.gx-chip.is-cost { background: var(--brand-50); color: var(--brand-700); }
.gx-chip.is-favorited { background: #fee2e2; color: #b91c1c; }
.gx-chip.is-ref {
    background: #fef3c7; color: #92400e;
    cursor: pointer;
}

/* ─── Action toolbar (compact, mobile-friendly) ─── */
.gx-actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr) auto;
    gap: 6px;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--slate-100);
}
.gx-act {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    padding: 10px 6px;
    background: var(--slate-50);
    border: 1px solid var(--slate-200);
    border-radius: 9px;
    color: var(--slate-700);
    font: 700 10.5px 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.15s;
    position: relative;
}
.gx-act:hover { background: #fff; border-color: var(--brand-300); color: var(--brand-700); transform: translateY(-1px); }
.gx-act svg { color: var(--slate-500); transition: color 0.15s; }
.gx-act:hover svg { color: var(--brand-600); }
.gx-act.is-on { background: var(--brand-50); border-color: var(--brand-300); color: var(--brand-700); }
.gx-act.is-on svg { color: var(--brand-600); }
.gx-act-fav.is-on { background: #fee2e2; border-color: #fecaca; color: #b91c1c; }
.gx-act-fav.is-on svg { color: #dc2626; fill: currentColor; }

.gx-act-more-wrap { position: relative; }
.gx-act-more {
    width: 100%; padding: 10px 6px;
    flex-direction: row;
}
.gx-act-menu {
    position: absolute;
    bottom: calc(100% + 6px); right: 0;
    background: #fff;
    border: 1px solid var(--slate-200);
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(15,23,42,0.18);
    padding: 6px;
    min-width: 200px;
    z-index: 50;
}
.gx-act-menu button {
    display: block; width: 100%;
    padding: 8px 12px;
    background: transparent; border: none;
    text-align: left;
    font: 600 12.5px 'Inter', sans-serif;
    color: var(--slate-800);
    border-radius: 6px;
    cursor: pointer;
}
.gx-act-menu button:hover { background: var(--slate-100); }
.gx-act-menu button.danger { color: #dc2626; }
.gx-act-menu button.danger:hover { background: #fef2f2; }

/* ─── Thumbnail strip ─── */
.gx-strip-wrap {
    background: var(--gx-bg-pane);
    border: 1px solid var(--gx-border);
    border-radius: var(--gx-radius);
    padding: 14px;
    box-shadow: 0 1px 3px rgba(15,23,42,0.04);
}
.gx-strip {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 8px;
    max-height: 240px;
    overflow-y: auto;
}
.gx-thumb {
    position: relative;
    aspect-ratio: 1;
    background: var(--slate-100);
    border: 2px solid transparent;
    border-radius: 9px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
    padding: 0;
    display: block;
}
.gx-thumb:hover { transform: translateY(-2px); border-color: var(--brand-300); }
.gx-thumb.is-active {
    border-color: var(--brand-600);
    box-shadow: 0 0 0 3px rgba(37,99,235,0.2), 0 4px 12px rgba(15,23,42,0.12);
}
.gx-thumb img {
    width: 100%; height: 100%; object-fit: cover; display: block;
}
/* Match the hero's orientation rules in miniature */
.gx-thumb.is-portrait img { object-fit: contain; background: #0f172a; }
.gx-thumb.is-landscape img { object-fit: cover; }
.gx-thumb-audio {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    font: 700 28px 'Inter', sans-serif;
    color: var(--brand-500);
    background: linear-gradient(135deg, var(--brand-50), #fff);
}
.gx-thumb-vid-badge, .gx-thumb-fav-badge {
    position: absolute;
    background: rgba(0,0,0,0.65); color: #fff;
    border-radius: 4px;
    padding: 1px 5px;
    font: 700 10px 'Inter', sans-serif;
}
.gx-thumb-vid-badge { top: 4px; left: 4px; }
.gx-thumb-fav-badge { top: 4px; right: 4px; background: #dc2626; }

/* Pagination */
.gx-pager {
    display: flex; justify-content: center; align-items: center; gap: 14px;
    padding: 14px 0 4px;
    border-top: 1px solid var(--slate-100);
    margin-top: 12px;
}
.gx-pager-btn {
    padding: 6px 14px;
    background: var(--slate-100);
    border: 1px solid var(--slate-200);
    border-radius: 8px;
    color: var(--slate-700);
    font: 700 12px 'Inter', sans-serif;
    text-decoration: none;
    transition: background 0.15s;
}
.gx-pager-btn:hover { background: #fff; border-color: var(--brand-300); color: var(--brand-700); }
.gx-pager-meta { font: 500 12px 'Inter', sans-serif; color: var(--slate-500); }

/* ═══════ Save-as-Ref modal ═══════ */
.gx-saveref-card { width: min(560px, 96vw); }
.gx-saveref-help { font: 500 12.5px 'Inter', sans-serif; color: var(--slate-600); margin: 0 0 16px; line-height: 1.5; }
.gx-saveref-cat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}
.gx-saveref-cat {
    display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
    padding: 14px 14px;
    background: var(--slate-50);
    border: 2px solid var(--slate-200);
    border-radius: 10px;
    cursor: pointer;
    text-align: left;
    transition: all 0.15s;
}
.gx-saveref-cat > div { font-size: 24px; margin-bottom: 4px; }
.gx-saveref-cat span { font: 700 14px 'Inter', sans-serif; color: var(--slate-900); }
.gx-saveref-cat em { font: 500 11px 'Inter', sans-serif; color: var(--slate-500); font-style: normal; }
.gx-saveref-cat:hover, .gx-saveref-cat.is-selected {
    border-color: var(--brand-500);
    background: var(--brand-50);
    transform: translateY(-1px);
}
.gx-saveref-form { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--slate-200); }

/* ═══════ Stitch reel modal ═══════ */
.gx-reel-card { width: min(520px, 96vw); }

/* ════════════════════════════════════════════
   MOBILE: stack hero, horizontal-scroll thumb strip
   ════════════════════════════════════════════ */
@media (max-width: 900px) {
    .gx-main { padding: 12px 14px 24px; }
    .gx-hero {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    .gx-hero-media { min-height: 280px; }
    .gx-hero-media img, .gx-hero-media video { max-height: 50vh; }
    .gx-details { max-height: none; padding: 14px; }
    .gx-title { font-size: 15px; }
    .gx-actions {
        grid-template-columns: repeat(4, 1fr) auto;
        gap: 5px;
    }
    .gx-act { font-size: 9.5px; padding: 8px 4px; }
    .gx-act span { display: none; }      /* icons only on smallest mobile */
    .gx-act-fav span, .gx-act svg { display: inline-flex; }
    /* Horizontal scroll strip on mobile */
    .gx-strip {
        grid-template-columns: none;
        grid-auto-flow: column;
        grid-auto-columns: 96px;
        max-height: 110px;
        overflow-x: auto;
        overflow-y: hidden;
        padding: 4px 0;
        scroll-snap-type: x mandatory;
    }
    .gx-thumb { scroll-snap-align: center; }
    .gx-top-title-text { max-width: 40vw; font-size: 13px; }
    .gx-back span, .gx-btn-ghost span { display: inline; }
    .gx-hero-nav-prev, .gx-hero-nav-next { width: 32px; height: 32px; font-size: 18px; }
}

/* Bigger viewports — more thumb breathing room */
@media (min-width: 1280px) {
    .gx-strip { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); max-height: 320px; }
    .gx-act { padding: 12px 8px; font-size: 11.5px; }
}

/* Tighter eyebrow — show the index/total prominently */
.gx-eyebrow #gxIdx { color: var(--brand-700); font-weight: 800; }