/* =========================================================================
   OmochiX Learn v2 — Motion Gallery and Learn hub refresh.
   Loaded only on /learn and /learn/motion (inc/learn-gallery.php), after
   style.css and (when present) shell.css. Additive: reuses the design tokens
   (--color-*, --radius-*, --shadow-*, --motion-*, --page-gutter,
   --container-width) and structural classes (.breadcrumb, .sr-only,
   .icon-button, .static-page__notice) already defined in style.css.
   ========================================================================= */

/* --- Shared pieces ----------------------------------------------------- */
.motion-badge {
    display: inline-block;
    padding: 3px 10px;
    color: var(--color-primary);
    background: color-mix(in srgb, var(--color-primary) 10%, transparent);
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: 700;
    line-height: 1.5;
}
.motion-badge--intermediate { color: #b45309; background: rgba(180, 83, 9, 0.1); }
.motion-badge--advanced { color: #b91c1c; background: rgba(185, 28, 28, 0.1); }
.motion-chip {
    display: inline-block;
    padding: 3px 10px;
    color: var(--color-muted);
    background: var(--color-hover);
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: 650;
    line-height: 1.5;
    text-decoration: none;
}
a.motion-chip--tag:hover { color: var(--color-text); }
.motion-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 46px;
    padding: 12px 22px;
    color: #fff;
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: background-color var(--motion-fast) ease, border-color var(--motion-fast) ease, transform var(--motion-fast) var(--ease-out);
}
.motion-button:hover { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }
.motion-button:active { transform: scale(var(--motion-scale-press)); }
.motion-button--ghost { color: var(--color-text); background: var(--color-surface); border-color: var(--color-line); }
.motion-button--ghost:hover { background: var(--color-hover); border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-line)); }
.motion-copy {
    flex-shrink: 0;
    min-height: 40px;
    padding: 9px 16px;
    color: #fff;
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
    transition: background-color var(--motion-fast) ease;
}
.motion-copy:hover { background: var(--color-primary-hover); }
.motion-copy.is-done { background: #1f8f5f; border-color: #1f8f5f; }
.motion-copy:focus-visible, .motion-preview__btn:focus-visible, .motion-filter__chip:focus-visible, .motion-card__link:focus-visible,
.motion-filter__pause:focus-visible, .motion-filter__reset:focus-visible, .motion-detail__nav-link:focus-visible, .motion-related-card:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 3px;
}

/* --- Gallery: hero ---------------------------------------------------- */
.motion-gallery__compose { margin: 12px 0 0; font-size: 14px; font-weight: 650; }
.motion-gallery__compose a { color: var(--color-primary); text-decoration: none; }
.motion-gallery__compose a:hover { text-decoration: underline; }
.motion-gallery { min-height: 100vh; }
.motion-gallery__container,
.motion-detail__container {
    width: min(calc(100% - (var(--page-gutter) * 2)), var(--container-width));
    margin-inline: auto;
}
.motion-detail__container { max-width: 980px; }
.motion-gallery__hero {
    padding: clamp(40px, 8vw, 72px) 0 clamp(28px, 5vw, 44px);
    background: linear-gradient(180deg, rgba(110, 75, 255, 0.018), transparent 82%);
    border-bottom: 1px solid var(--color-line);
}
.motion-gallery__hero .breadcrumb { margin-bottom: 24px; }
.motion-gallery__eyebrow {
    margin: 0;
    color: var(--color-primary);
    font-size: 10px;
    font-weight: 750;
    letter-spacing: 0.16em;
}
.motion-gallery__hero h1 {
    margin: 12px 0 0;
    font-size: clamp(2rem, 7vw, 3.25rem);
    line-height: 1.08;
    letter-spacing: -0.05em;
}
.motion-gallery__lead {
    max-width: 42rem;
    margin: 18px 0 0;
    color: var(--color-muted);
    font-size: clamp(1rem, 3.6vw, 1.0625rem);
    line-height: 1.8;
}

/* --- Gallery: filter bar --------------------------------------------- */
.motion-filter { display: grid; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--color-line); }
.motion-filter__chips { display: flex; flex-wrap: wrap; gap: 8px; }
.motion-filter__chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 38px;
    padding: 8px 14px;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 650;
    text-decoration: none;
    transition: border-color var(--motion-fast) ease, background-color var(--motion-fast) ease, color var(--motion-fast) ease;
}
.motion-filter__chip span { color: var(--color-muted); font-size: 11px; font-weight: 650; }
.motion-filter__chip:hover { border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-line)); }
.motion-filter__chip.is-active { color: #fff; background: var(--color-primary); border-color: var(--color-primary); }
.motion-filter__chip.is-active span { color: rgba(255, 255, 255, 0.8); }
.motion-filter__row { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; align-items: end; }
.motion-filter__search {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    transition: border-color var(--motion-fast) ease, box-shadow var(--motion-fast) ease;
}
.motion-filter__search:focus-within { border-color: color-mix(in srgb, var(--color-primary) 55%, transparent); box-shadow: var(--glow-focus); }
.motion-filter__search svg { fill: none; stroke: var(--color-muted); stroke-linecap: round; stroke-width: 1.8; }
.motion-filter__search input { width: 100%; min-width: 0; min-height: 44px; padding: 0; color: var(--color-text); background: transparent; border: 0; outline: 0; font-size: 14px; }
.motion-filter__search input::placeholder { color: var(--color-muted); }
.motion-filter__select { display: grid; gap: 6px; min-width: 0; }
.motion-filter__select > span { color: var(--color-muted); font-size: 11px; font-weight: 650; }
.motion-filter__select select {
    width: 100%;
    min-width: 0;
    min-height: 46px;
    padding: 10px 14px;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    outline: 0;
    font-size: 14px;
}
.motion-filter__select select:focus { border-color: var(--color-primary); box-shadow: var(--glow-focus); }
.motion-filter__submit {
    min-height: 46px;
    padding: 10px 18px;
    color: #fff;
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
}
.motion-filter__reset { align-self: center; justify-self: start; padding: 8px 2px; color: var(--color-muted); font-size: 12px; font-weight: 650; }
.motion-filter__pause {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 10px 16px;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 650;
    transition: border-color var(--motion-fast) ease, background-color var(--motion-fast) ease;
}
.motion-filter__pause svg { fill: currentColor; }
.motion-filter__pause:hover { border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-line)); }
.motion-filter__pause[aria-pressed="true"] { color: var(--color-primary); border-color: color-mix(in srgb, var(--color-primary) 55%, var(--color-line)); background: color-mix(in srgb, var(--color-primary) 8%, transparent); }
.motion-filter__count { margin: 0; color: var(--color-muted); font-size: 12px; }
.omx-motion-js .motion-filter__submit { display: none; }

/* --- Gallery: sections and cards ------------------------------------- */
.motion-gallery__sections { padding-block: clamp(32px, 6vw, 56px) var(--section-space); }
.motion-section + .motion-section { margin-top: clamp(40px, 7vw, 64px); }
.motion-section__header { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.motion-section__header h2 { margin: 0; font-size: clamp(1.375rem, 4.5vw, 1.75rem); letter-spacing: -0.04em; }
.motion-section__header p { max-width: 40rem; margin: 6px 0 0; color: var(--color-muted); font-size: 13px; line-height: 1.7; }
.motion-section__range { flex-shrink: 0; color: var(--color-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.motion-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
.motion-card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--motion-base) var(--ease-out), box-shadow var(--motion-base) var(--ease-out), border-color var(--motion-base) var(--ease-out);
}
.motion-card:hover {
    transform: translateY(-2px);
    border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-line));
    box-shadow: var(--shadow-md);
}
.motion-card__preview { border-bottom: 1px solid var(--color-line); }
.motion-card__body { display: grid; gap: 6px; padding: 16px 18px 18px; }
.motion-card__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.motion-card__id { color: var(--color-muted); font-size: 11px; font-weight: 700; font-variant-numeric: tabular-nums; }
.motion-card__tech { color: var(--color-muted); font-size: 11px; font-weight: 650; }
.motion-card__title { margin: 2px 0 0; font-size: 17px; letter-spacing: -0.02em; line-height: 1.3; }
.motion-card__link { color: inherit; text-decoration: none; }
/* The title link stretches over the whole card; the preview controls sit above it. */
.motion-card__link::after { content: ""; position: absolute; inset: 0; z-index: 1; border-radius: inherit; }
.motion-card__en { display: block; margin-top: 2px; color: var(--color-muted); font-size: 12px; font-weight: 500; letter-spacing: 0; }
.motion-card__summary { margin: 0; color: var(--color-muted); font-size: 13px; line-height: 1.6; }
.motion-gallery__empty { display: grid; justify-items: center; gap: 10px; padding: 56px 0; color: var(--color-muted); text-align: center; }
/* The hidden attribute must win over the display rules: the list prints the empty state hidden while samples match, cards hidden when they do not match the URL filters, and learn-gallery.js toggles both on every filter change. */
.motion-gallery__empty[hidden], .motion-card[hidden] { display: none; }
.motion-gallery__empty p { margin: 0; }
.motion-gallery__empty a { color: var(--color-primary); font-size: 13px; font-weight: 700; }
.motion-gallery__editor-content { padding-block: var(--section-space); border-top: 1px solid var(--color-line); }

/* --- Preview (card / detail / hub / expand) -------------------------- */
.motion-preview {
    position: relative;
    aspect-ratio: var(--stage-w, 16) / var(--stage-h, 9);
    overflow: hidden;
    background: var(--color-bg);
}
.motion-preview__poster {
    position: absolute;
    inset: 0;
    display: grid;
    align-content: center;
    justify-items: center;
    gap: 4px;
    color: var(--color-muted);
    background:
        radial-gradient(circle at 30% 30%, color-mix(in srgb, var(--color-primary) 12%, transparent), transparent 55%),
        var(--color-bg);
    transition: opacity var(--motion-base) ease;
}
.motion-preview__poster-id { font-size: 11px; font-weight: 700; font-variant-numeric: tabular-nums; }
.motion-preview__poster-name { font-size: 15px; font-weight: 700; color: var(--color-text); }
.motion-preview.is-mounted .motion-preview__poster { opacity: 0; }
.motion-preview__frame, .motion-preview__frame noscript { position: absolute; inset: 0; }
.motion-preview__iframe {
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    background: transparent;
    pointer-events: none; /* clicks fall through to the card's stretched link */
}
.motion-preview__controls { position: absolute; right: 8px; bottom: 8px; z-index: 2; display: flex; gap: 6px; }
.motion-preview__btn {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    padding: 0;
    color: var(--color-text);
    background: color-mix(in srgb, var(--color-surface) 88%, transparent);
    border: 1px solid var(--color-line);
    border-radius: 50%;
    cursor: pointer;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    transition: background-color var(--motion-fast) ease, border-color var(--motion-fast) ease, transform var(--motion-fast) var(--ease-out);
}
.motion-preview__btn:hover { background: var(--color-surface); border-color: color-mix(in srgb, var(--color-primary) 40%, var(--color-line)); }
.motion-preview__btn:active { transform: scale(var(--motion-scale-press)); }
.motion-preview__icon { width: 18px; height: 18px; fill: currentColor; }
.motion-preview__icon--pause { display: none; }
.motion-preview.is-playing .motion-preview__icon--pause { display: block; }
.motion-preview.is-playing .motion-preview__icon--play { display: none; }
.motion-preview--detail, .motion-preview--expand {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}
.motion-preview--detail .motion-preview__btn, .motion-preview--expand .motion-preview__btn { width: 44px; height: 44px; }
.motion-preview--detail .motion-preview__icon, .motion-preview--expand .motion-preview__icon { width: 22px; height: 22px; }
.motion-preview--detail .motion-preview__controls, .motion-preview--expand .motion-preview__controls { right: 12px; bottom: 12px; gap: 8px; }
.motion-preview--detail .motion-preview__poster-name { font-size: 20px; }

/* --- Detail ----------------------------------------------------------- */
.motion-detail { min-height: 100vh; padding-block: clamp(32px, 7vw, 56px) var(--section-space); }
.motion-detail .breadcrumb { margin-bottom: 28px; }
.motion-detail__header { display: grid; gap: 10px; margin-bottom: 24px; }
.motion-detail__eyebrow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 0; color: var(--color-muted); font-size: 12px; font-weight: 700; }
.motion-detail__eyebrow a { color: var(--color-primary); text-decoration: none; }
.motion-detail__eyebrow a:hover { text-decoration: underline; }
.motion-detail__title { margin: 0; font-size: clamp(1.75rem, 6vw, 2.5rem); line-height: 1.15; letter-spacing: -0.04em; }
.motion-detail__en { display: block; margin-top: 4px; color: var(--color-muted); font-size: clamp(0.9375rem, 2.5vw, 1.0625rem); font-weight: 500; letter-spacing: 0; }
.motion-detail__summary { margin: 0; color: var(--color-muted); font-size: 1.0625rem; line-height: 1.7; }
.motion-detail__meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 4px; }
.motion-detail__preview { margin: 8px 0 16px; }
.motion-detail__description { max-width: 46rem; margin: 0 0 32px; color: var(--color-muted); font-size: 14px; line-height: 1.8; }
.motion-detail__layout { display: grid; gap: 20px; align-items: start; }
.motion-panel {
    display: grid;
    gap: 12px;
    min-width: 0;
    padding: 22px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
}
.motion-panel__header { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.motion-panel__title { margin: 0; font-size: 16px; letter-spacing: -0.02em; }
.motion-panel__subtitle { margin: 6px 0 0; color: var(--color-muted); font-size: 12px; font-weight: 750; letter-spacing: 0.06em; }
.motion-panel__note { margin: 0; color: var(--color-muted); font-size: 13px; line-height: 1.7; }
.motion-detail__ask {
    margin: 0;
    padding: 14px 16px;
    color: var(--color-text);
    background: color-mix(in srgb, var(--color-primary) 7%, transparent);
    border-left: 4px solid var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 15px;
    line-height: 1.7;
}
.motion-detail__spec { margin: 0; padding-left: 1.2em; color: var(--color-text); font-size: 14px; line-height: 1.75; }
.motion-detail__spec li + li { margin-top: 4px; }
.motion-detail__use { margin: 0; color: var(--color-text); font-size: 14px; line-height: 1.75; }
.motion-code { min-width: 0; border: 1px solid var(--color-line); border-radius: var(--radius-sm); background: var(--color-bg); }
.motion-code summary { padding: 10px 14px; cursor: pointer; color: var(--color-muted); font-size: 12px; font-weight: 700; }
.motion-code summary:hover { color: var(--color-text); }
.motion-code__pre {
    max-height: 420px;
    margin: 0;
    padding: 14px 16px;
    overflow: auto;
    color: var(--color-text);
    border-top: 1px solid var(--color-line);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 12.5px;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    tab-size: 2;
}
.motion-detail__related { margin-top: 32px; }
.motion-detail__related .motion-panel__title { margin-bottom: 14px; }
.motion-related__grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; }
.motion-related-card {
    display: grid;
    gap: 4px;
    padding: 16px 18px;
    color: inherit;
    text-decoration: none;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    transition: border-color var(--motion-base) var(--ease-out);
}
.motion-related-card:hover { border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-line)); }
.motion-related-card__kind { color: var(--color-primary); font-size: 10px; font-weight: 750; letter-spacing: 0.1em; }
.motion-related-card strong { font-size: 14px; }
.motion-related-card > span:not(.motion-related-card__kind) { color: var(--color-muted); font-size: 12px; line-height: 1.6; }
.motion-detail__nav { display: grid; gap: 12px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--color-line); }
.motion-detail__nav-link {
    display: grid;
    gap: 4px;
    padding: 14px 18px;
    color: inherit;
    text-decoration: none;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    transition: border-color var(--motion-base) var(--ease-out);
}
.motion-detail__nav-link:hover { border-color: color-mix(in srgb, var(--color-primary) 35%, var(--color-line)); }
.motion-detail__nav-link > span { color: var(--color-primary); font-size: 11px; font-weight: 750; letter-spacing: 0.08em; }
.motion-detail__nav-link > strong { font-size: 14px; }
.motion-detail__nav-link--next { text-align: right; }
.motion-detail__cta { margin-top: 40px; }

/* --- Detail dialog (over the list) ------------------------------------ */
.motion-dialog {
    width: min(980px, calc(100% - 32px));
    max-height: calc(100dvh - 32px);
    padding: 0;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
    overflow: auto;
    overscroll-behavior: contain;
}
.motion-dialog::backdrop { background: rgba(0, 0, 0, 0.4); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.motion-dialog[open] { animation: motion-dialog-in 240ms var(--ease-out); }
@keyframes motion-dialog-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.motion-dialog__frame { position: relative; padding: clamp(20px, 4vw, 40px); }
.motion-dialog__close { position: sticky; top: 0; float: right; z-index: 3; margin: -8px -8px 0 0; color: var(--color-text); background: color-mix(in srgb, var(--color-surface) 88%, transparent); border: 1px solid var(--color-line); border-radius: 50%; }
.motion-dialog__close .icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.motion-dialog__body { clear: none; }
.motion-dialog__body[aria-busy="true"] { min-height: 240px; opacity: 0.6; }
.motion-dialog .motion-detail__title:focus { outline: none; }
.motion-dialog .motion-detail__header { padding-right: 44px; }
@media (max-width: 767px) {
    /* Full-screen sheet; no entrance animation (a frozen first frame would leave it invisible). */
    .motion-dialog { width: 100%; max-width: 100%; height: 100dvh; max-height: 100dvh; margin: 0; border: 0; border-radius: 0; }
    .motion-dialog[open] { animation: none; }
}

/* --- Playground (adjustable parameters) -------------------------------- */
.motion-playground {
    display: grid;
    gap: 14px;
    margin: 0 0 24px;
    padding: 22px;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
}
.motion-playground__hint { margin: -4px 0 0; color: var(--color-muted); font-size: 12.5px; line-height: 1.7; }
.motion-playground__grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px 24px; }
.motion-playground__field { display: grid; gap: 8px; min-width: 0; }
.motion-playground__label { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; color: var(--color-text); font-size: 13px; font-weight: 650; }
.motion-playground__value { color: var(--color-muted); font-size: 12px; font-weight: 600; font-variant-numeric: tabular-nums; }
.motion-playground input[type="range"] { width: 100%; min-height: 44px; margin: 0; accent-color: var(--color-primary); cursor: pointer; }
.motion-playground input[type="color"] {
    width: 100%;
    height: 44px;
    padding: 4px;
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    cursor: pointer;
}
.motion-playground select {
    width: 100%;
    min-height: 44px;
    padding: 10px 14px;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    font-size: 14px;
}
.motion-playground select:focus, .motion-playground input:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.motion-playground__reset {
    flex-shrink: 0;
    min-height: 40px;
    padding: 9px 14px;
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 12px;
    font-weight: 700;
}
.motion-playground__reset:disabled { opacity: 0.5; cursor: default; }
.motion-playground__actions { display: flex; flex-wrap: wrap; gap: 10px; }
.motion-copy--ghost { color: var(--color-text); background: var(--color-bg); border-color: var(--color-line); }
.motion-copy--ghost:hover { background: var(--color-hover); }
/* Copy buttons announce that the adjusted version is what gets copied. */
.motion-copy__state { font-weight: 500; }
/* Adjustable sample: preview and panel side by side on wide screens (page and dialog).
   Both columns are about the same height, so no sticky positioning is needed to keep them in view together. */
.motion-detail__studio { display: grid; gap: 0; align-items: start; margin-bottom: 32px; }
.motion-detail__stage { min-width: 0; }
.motion-detail__studio .motion-detail__description { margin-bottom: 24px; }
.motion-detail__studio .motion-playground { margin: 0; }
@media (min-width: 640px) {
    .motion-playground__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

/* --- Expanded preview dialog ------------------------------------------ */
.motion-expand {
    width: min(1200px, calc(100% - 24px));
    max-height: calc(100dvh - 24px);
    padding: clamp(16px, 3vw, 32px);
    color: var(--color-text);
    background: var(--color-bg);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-lg);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.3);
}
.motion-expand::backdrop { background: rgba(0, 0, 0, 0.6); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.motion-expand__close { position: absolute; top: 12px; right: 12px; z-index: 3; color: var(--color-text); background: color-mix(in srgb, var(--color-surface) 88%, transparent); border: 1px solid var(--color-line); border-radius: 50%; }
.motion-expand__close .icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.motion-expand__stage { width: min(100%, calc((100dvh - 160px) * var(--stage-w, 16) / var(--stage-h, 9))); margin: 24px auto 0; }
.motion-expand__caption { margin: 14px 0 0; color: var(--color-muted); font-size: 13px; font-weight: 650; text-align: center; }

/* --- Prompt detail: related motion samples ----------------------------- */
.prompt-detail-related-motion { padding-block: var(--section-space); border-top: 1px solid var(--color-line); }
.prompt-detail-related-motion .tool-detail-section-header { margin-bottom: 24px; }
.prompt-detail-related-motion__more { margin: 24px 0 0; }
.prompt-detail-related-motion__more a { display: inline-flex; align-items: center; gap: 6px; color: var(--color-primary); font-size: 13px; font-weight: 700; text-decoration: none; }
.prompt-detail-related-motion__more a:hover { text-decoration: underline; }
body.omx-shell .prompt-detail-related-motion__more a { color: var(--shell-accent); }

/* --- Learn hub v2 ------------------------------------------------------ */
.learn-hub-v2 .learn-hub__hero { padding-bottom: clamp(36px, 6vw, 56px); }
.learn-hub__cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 28px; }
.learn-hub-v2__section { padding-block: clamp(44px, 7vw, 64px); border-bottom: 1px solid var(--color-line); }
.learn-hub-v2__section-header { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 24px; }
.learn-hub-v2__section-header h2 { margin: 6px 0 0; font-size: clamp(1.5rem, 5vw, 2rem); letter-spacing: -0.04em; }
.learn-hub-v2__section-header p:not(.learn-hub__eyebrow) { max-width: 40rem; margin: 8px 0 0; color: var(--color-muted); font-size: 14px; line-height: 1.7; }
.learn-hub-v2__section-header .learn-hub__eyebrow { margin-top: 0; }
.learn-hub-v2__more { flex-shrink: 0; color: var(--color-primary); font-size: 13px; font-weight: 700; text-decoration: none; white-space: nowrap; }
.learn-hub-v2__more:hover { text-decoration: underline; }
.learn-hub-v2__featured { display: grid; grid-template-columns: minmax(0, 1fr); gap: 20px; }
.learn-hub-v2__featured .motion-card__link::after { z-index: 1; }
.learn-hub-v2__prompts { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
.learn-hub-v2__soon {
    display: grid;
    gap: 6px;
    padding: 22px 24px;
    color: var(--color-muted);
    background: var(--color-surface);
    border: 1px dashed var(--color-line);
    border-radius: var(--radius-md);
}
.learn-hub-v2__soon strong { color: var(--color-text); font-size: 16px; }
.learn-hub-v2__soon small { font-size: 11px; font-weight: 650; }
.learn-hub-v2__soon-grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }

/* --- Dark mode ---------------------------------------------------------- */
:root[data-theme="dark"] .motion-badge--intermediate { color: #f5a455; background: rgba(245, 164, 85, 0.12); }
:root[data-theme="dark"] .motion-badge--advanced { color: #f78c8c; background: rgba(247, 140, 140, 0.12); }
:root[data-theme="dark"] .motion-gallery__hero { background: linear-gradient(180deg, rgba(110, 75, 255, 0.06), transparent 82%); }
:root[data-theme="dark"] .motion-code__pre { background: #111; }
:root[data-theme="dark"] .motion-copy.is-done { background: #2a9d6f; border-color: #2a9d6f; }
body.omx-shell .motion-gallery__eyebrow,
body.omx-shell .motion-detail__eyebrow a,
body.omx-shell .motion-related-card__kind,
body.omx-shell .motion-detail__nav-link > span,
body.omx-shell .learn-hub-v2__more,
body.omx-shell .motion-gallery__empty a,
body.omx-shell .motion-badge:not(.motion-badge--intermediate):not(.motion-badge--advanced) { color: var(--shell-accent); }

/* --- Reduced motion ---------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    .motion-card, .motion-card:hover, .motion-preview__poster, .motion-preview__btn, .motion-dialog[open] { transition: none; animation: none; transform: none; }
}
@media (hover: none), (pointer: coarse) {
    .motion-card:hover { transform: none; }
}

/* --- Responsive --------------------------------------------------------- */
@media (min-width: 640px) {
    .motion-filter__row { grid-template-columns: minmax(0, 1fr) auto; }
    .motion-filter__search { grid-column: 1 / -1; }
}
@media (min-width: 768px) {
    .motion-grid, .learn-hub-v2__featured, .learn-hub-v2__prompts, .motion-related__grid, .learn-hub-v2__soon-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .motion-filter__row { grid-template-columns: minmax(0, 1fr) 150px 150px auto auto; }
    .motion-filter__search { grid-column: auto; }
    .motion-filter__pause { grid-column: -2 / -1; }
    .motion-detail__nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .motion-detail__nav-link--next:only-child { grid-column: 2; }
}
@media (min-width: 1024px) {
    .motion-grid, .learn-hub-v2__featured, .learn-hub-v2__prompts, .motion-related__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .motion-detail__layout { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .motion-detail__studio { grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 28px; }
    .motion-filter__row { grid-template-columns: minmax(0, 1fr) 160px 160px auto auto auto; }
    .motion-filter__pause { grid-column: auto; }
}
/* With the 194px shell sidebar (1081px+) three columns only fit from about 1376px. */
@media (min-width: 1081px) and (max-width: 1375px) {
    body.omx-shell .motion-grid, body.omx-shell .learn-hub-v2__featured, body.omx-shell .learn-hub-v2__prompts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}