/* ==========================================================
   AI STUDIO
   /assets/css/create.css
   ========================================================== */

.ai-studio {
    --ai-panel-bg: rgba(127, 127, 127, 0.055);
    --ai-panel-border: rgba(127, 127, 127, 0.14);
    --ai-muted-bg: rgba(127, 127, 127, 0.08);
    --ai-active-bg: rgba(127, 127, 127, 0.14);
    --ai-player-h: 0px;
    min-height: calc(100vh - 3rem);
}

body:has(#site-audio-player.visible) .ai-studio {
    --ai-player-h: var(--sap-player-h);
}

.ai-studio__workspace {
    min-height: calc(100vh - 3rem);
}

.ai-studio__editor {
    border-right: 1px solid var(--ai-panel-border);
    padding-right: 1.5rem;
}

.ai-studio__editor-scroll {
    min-height: 0;
}

.ai-studio__history-scroll {
    min-height: 0;
}

/* Внутренние скроллы /create */
.ai-studio__editor-scroll,
.ai-studio__history-scroll {
    scrollbar-color: rgba(120, 120, 130, .08) transparent;
}

.ai-studio__editor-scroll:hover,
.ai-studio__history-scroll:hover {
    scrollbar-color: rgba(120, 120, 130, .22) transparent;
}

.ai-studio__editor-scroll::-webkit-scrollbar-thumb,
.ai-studio__history-scroll::-webkit-scrollbar-thumb {
    background-color: rgba(120, 120, 130, .08);
}

.ai-studio__editor-scroll:hover::-webkit-scrollbar-thumb,
.ai-studio__history-scroll:hover::-webkit-scrollbar-thumb {
    background-color: rgba(120, 120, 130, .22);
}

.ai-studio__history {
    padding-left: 1.5rem;
}

.ai-studio__topbar {
    min-height: 2.5rem;
}

.ai-studio__title-row {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    min-width: 0;
}

.ai-studio__title-info {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    width: 18px;
    height: 18px;
    line-height: 0;
}

.ai-studio__title-info .icon {
    width: 16px;
    height: 16px;
}

.ai-studio__credits {
    white-space: nowrap;
}

.ai-studio__tabs {
    display: flex;
    gap: .35rem;
    border-bottom: 1px solid var(--ai-panel-border);
}

.ai-studio__tab {
    appearance: none;
    border: 0;
    background: transparent;
    color: inherit;
    cursor: pointer;
    padding: .65rem .15rem;
    margin-right: 1.2rem;
    font: inherit;
    font-size: .875rem;
    opacity: .55;
    border-bottom: 2px solid transparent;
}

.ai-studio__tab.is-active {
    opacity: 1;
    border-bottom-color: currentColor;
}

.ai-studio__panel {
    background: var(--ai-panel-bg);
    border: 0;
    border-radius: 6px;
    padding: 1rem;
}

.ai-studio__panel + .ai-studio__panel {
    margin-top: .75rem;
}

.ai-studio__textarea {
    min-height: 178px;
    max-height: 360px;
}

.ai-studio__simple-textarea {
    min-height: 230px;
}

.ai-studio__style-textarea {
    min-height: 112px;
    max-height: 220px;
}

.ai-studio__textarea,
.ai-studio__style-textarea {
    display: block;
    width: 100%;
    resize: none;
    padding-right: .75em;
    padding-bottom: .75em;
    scrollbar-gutter: stable;
}

/*
 * Отдельная безопасная зона для изменения высоты textarea.
 * Handle находится ВНЕ текста и скроллбара, поэтому ничего не перекрывает.
 */
.ai-studio__textarea-wrap {
    position: relative;
    display: flex;
    flex-direction: column;
}

.ai-studio__textarea-resizer {
    position: relative;
    z-index: 3;
    left: auto;
    right: auto;
    bottom: auto;
    width: 100%;
    height: 18px;
    margin-top: 3px;
    transform: none;
    cursor: ns-resize;
    touch-action: none;
    opacity: 1;
    border-radius: 5px;
    background: transparent;
}

.ai-studio__textarea-resizer::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 8px;
    width: 30px;
    height: 3px;
    border-radius: 999px;
    background: currentColor;
    opacity: .25;
    transform: translateX(-50%);
}

.ai-studio__textarea-resizer::after {
    content: none;
}

.ai-studio__textarea-resizer:hover::before,
.ai-studio__textarea-resizer.is-dragging::before {
    opacity: .48;
}

@media (pointer: coarse) {
    .ai-studio__textarea-resizer {
        height: 24px;
    }

    .ai-studio__textarea-resizer::before {
        top: 11px;
        width: 34px;
    }
}

.ai-studio__field-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    margin-bottom: .55rem;
}

.ai-studio__segmented {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
}

.ai-studio__vocals-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
}

.ai-studio__vocals-row .ai-studio__segmented {
    flex-wrap: nowrap;
    justify-content: flex-end;
}

.ai-studio__advanced-settings {
    padding: 0;
    overflow: visible;
}

.ai-studio__advanced-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    min-height: 3.5rem;
    padding: 1rem;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.ai-studio__advanced-head::-webkit-details-marker {
    display: none;
}

.ai-studio__advanced-head::marker {
    display: none;
    content: '';
}

.ai-studio__advanced-head-right {
    display: inline-flex;
    align-items: center;
    justify-content: flex-end;
    gap: .65rem;
    min-width: 0;
}

.ai-studio__advanced-summary {
    min-width: 0;
    max-width: 280px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: .75rem;
    opacity: .55;
}

.ai-studio__advanced-arrow {
    display: inline-block;
    flex: 0 0 8px;
    width: 8px;
    height: 8px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: rotate(45deg) translateY(-2px);
    transform-origin: center;
    opacity: .55;
    transition: transform .18s ease;
}

.ai-studio__advanced-settings[open] .ai-studio__advanced-arrow {
    transform: rotate(225deg) translate(-1px, -1px);
}

.ai-studio__advanced-content {
    padding: .65rem 1rem .75rem;
    border-top: 1px solid var(--ai-panel-border);
}

.ai-studio__advanced-list {
    display: block;
}

.ai-studio__advanced-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 2.65rem;
    padding: .28rem 0;
}

.ai-studio__advanced-row + .ai-studio__advanced-row {
    border-top: 1px solid rgba(127, 127, 127, .08);
}

.ai-studio__advanced-row > .label {
    flex: 0 0 auto;
    font-size: .875rem;
}

.ai-studio__advanced-label {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
}

.ai-studio__advanced-row .ai-studio__segmented {
    flex-wrap: nowrap;
    justify-content: flex-end;
}

.ai-studio__advanced-control {
    flex: 0 0 auto;
    min-width: 0;
}

.ai-studio__advanced-control--language {
    width: 13.5rem;
}

.ai-studio__advanced-control--bpm {
    width: 13.5rem;
}

.ai-studio__advanced-control--key {
    width: 13.5rem;
}

.ai-studio__advanced-control .select,
.ai-studio__advanced-control .select select,
.ai-studio__advanced-control .input {
    width: 100%;
}

.ai-studio__advanced-control--bpm input[type="number"] {
    appearance: textfield;
    -moz-appearance: textfield;
}

.ai-studio__advanced-control--bpm input[type="number"]::-webkit-inner-spin-button,
.ai-studio__advanced-control--bpm input[type="number"]::-webkit-outer-spin-button {
    margin: 0;
    -webkit-appearance: none;
    appearance: none;
}

[data-ai-vocal-dependent].is-disabled {
    opacity: .35;
    pointer-events: none;
}

@media screen and (max-width: 768px) {
    .ai-studio__advanced-summary {
        max-width: 180px;
    }

    .ai-studio__advanced-row {
        display: grid;
        grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr);
        gap: .65rem;
        min-width: 0;
    }

    .ai-studio__advanced-row > .label {
        min-width: 0;
        max-width: none;
    }

    .ai-studio__advanced-control {
        width: 100%;
        min-width: 0;
        max-width: none;
    }

    .ai-studio__advanced-control--language,
    .ai-studio__advanced-control--key,
    .ai-studio__advanced-control--bpm {
        width: 100%;
    }

    .ai-studio__advanced-control .select,
    .ai-studio__advanced-control .select select,
    .ai-studio__advanced-control .input {
        min-width: 0;
        max-width: 100%;
        box-sizing: border-box;
    }

    .ai-studio__advanced-row .ai-studio__segmented {
        justify-self: end;
        max-width: 100%;
    }
}

.ai-studio__choice {
    appearance: none;
    border: 1px solid rgba(127, 127, 127, .22);
    background: transparent;
    color: inherit;
    min-height: 2.15rem;
    padding: 0 .75rem;
    border-radius: 4px;
    cursor: pointer;
    font: inherit;
    font-size: .75rem;
    opacity: .65;
}

.ai-studio__choice:hover {
    opacity: .9;
}

.ai-studio__choice.is-active {
    background: var(--ai-active-bg);
    opacity: 1;
}

/* В блоке «Дополнительно» выбранный вокал должен читаться чуть заметнее. */
.ai-studio__vocals .ai-studio__choice.is-active {
    background: rgba(127, 127, 127, .24);
    border-color: rgba(127, 127, 127, .42);
}

.ai-studio__tool-row {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem;
    margin-top: .75rem;
}

.ai-studio__tool-row .button {
    font-size: .75rem;
}

.ai-studio__instrumental {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    cursor: pointer;
    user-select: none;
    font-size: .75rem;
}

.ai-studio__instrumental input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.ai-studio__switch {
    position: relative;
    display: inline-block;
    width: 34px;
    height: 19px;
    background: var(--ai-muted-bg);
    border: 1px solid rgba(127, 127, 127, .22);
    border-radius: 999px;
    transition: .2s ease;
}

.ai-studio__switch::after {
    content: '';
    position: absolute;
    width: 13px;
    height: 13px;
    left: 2px;
    top: 2px;
    border-radius: 50%;
    background: currentColor;
    opacity: .65;
    transition: .2s ease;
}

.ai-studio__instrumental input:checked + .ai-studio__switch {
    background: currentColor;
}

.ai-studio__instrumental input:checked + .ai-studio__switch::after {
    transform: translateX(15px);
    background: var(--form-bg);
    opacity: 1;
}

.ai-studio__counter {
    font-size: .7rem;
    opacity: .5;
    font-variant-numeric: tabular-nums;
}

.ai-studio__create-wrap {
    position: relative;
    z-index: 8;
    flex: 0 0 auto;
    margin-top: .75rem;
    padding-top: .75rem;
    padding-bottom: .35rem;
    background: var(--bulma-body-background-color, #fff);
    border-top: 1px solid var(--ai-panel-border);
}




.ai-studio__create-actions {
    display: flex;
    align-items: stretch;
    gap: .65rem;
}

.ai-studio__create-actions .ai-studio__create {
    flex: 1 1 auto;
    width: auto;
    min-width: 0;
}

.ai-studio__icon-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 !important;
    border: 0 !important;
    border-radius: 50% !important;
    box-shadow: none !important;
    box-sizing: border-box;
}

.ai-studio__icon-action .icon {
    margin: 0 !important;
}

.ai-studio__icon-action img {
    display: block;
    filter: brightness(0) invert(1);
    opacity: .82;
    transition: opacity .15s ease;
}

.ai-studio__assist-button img {
    opacity: .28;
}

.ai-studio__assist-button:hover:not([disabled]) img {
    opacity: .46;
}

.ai-studio__clear {
    flex: 0 0 3rem;
    width: 3rem !important;
    min-width: 3rem;
    max-width: 3rem;
    height: 3rem !important;
    min-height: 3rem;
    max-height: 3rem;
    border-radius: 50% !important;
}

.ai-studio__clear img {
    width: 15px;
    height: 15px;
}

.ai-studio__create {
    min-height: 3rem;
    font-weight: 600;
}

.ai-studio__create[disabled] {
    opacity: .55;
    cursor: not-allowed;
}

.ai-studio__clear[disabled] {
    opacity: .3;
    cursor: not-allowed;
}


.ai-studio__history-search {
    position: relative;
}

.ai-studio__history-search .input {
    padding-left: 2.35rem;
}

.ai-studio__search-icon {
    position: absolute;
    z-index: 2;
    left: .75rem;
    top: 50%;
    transform: translateY(-50%);
    opacity: .45;
    pointer-events: none;
}

.ai-studio__search-icon img {
    display: block;
    width: 14px;
    height: 14px;
}

.ai-studio__theme-icon img.icon,
.ai-studio__loading-spinner {
    opacity: .62;
}

[data-theme="dark"] .ai-studio__theme-icon img.icon,
[data-theme="dark"] .ai-studio__loading-spinner {
    filter: invert(1) brightness(.92);
}

[data-theme="light"] .ai-studio__theme-icon img.icon,
[data-theme="light"] .ai-studio__loading-spinner {
    filter: brightness(.2) contrast(100%);
}

.ai-studio__filters {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
}


.ai-studio__history-list {
    display: block;
    margin: 0 !important;
    padding: 0 !important;
}

.ai-studio__history-results {
    margin: 0 !important;
    padding: 0 !important;
}

.ai-studio__history-result {
    min-width: 0;
    margin: 0 !important;
}

/*
 * Результаты генерации визуально повторяют обычный список Rivrox:
 * обложка слева, информация по центру, действия справа.
 * Базовая геометрия берётся из глобальных .track-item/.track-cover/.track-info.
 */
.ai-studio__history-result-cover {
    overflow: hidden;
    background: var(--ai-muted-bg);
}

.ai-studio__history-result-cover-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background: var(--ai-muted-bg);
    font-size: 1.15rem;
    opacity: .55;
}

.ai-studio__history-result-copy {
    min-width: 0;
}

.ai-studio__history-result-title {
    color: inherit;
}

.ai-studio__history-result-title:hover {
    color: inherit;
}

.ai-studio__history-result-meta {
    font-size: .75rem;
}


.ai-studio__history-result-actions {
    min-width: 0;
    justify-content: flex-end;
}

.ai-studio__history-result-state {
    font-size: .72rem;
    white-space: nowrap;
    opacity: .55;
}

@media screen and (max-width: 768px) {
    .ai-studio__history-result-actions {
        min-width: auto;
    }
}

.ai-studio__history-message {
    min-height: 42vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.ai-studio__history-more {
    display: flex;
    justify-content: center;
    margin-top: .9rem;
}

.ai-studio__empty {
    min-height: 54vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.ai-studio__empty-mark {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    border: 1px solid rgba(127, 127, 127, .22);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: .55;
}

.ai-studio__empty-mark img {
    display: block;
    width: 25px;
    height: 25px;
}

.ai-studio__simple,
.ai-studio__advanced {
    display: none;
}

.ai-studio__simple.is-active,
.ai-studio__advanced.is-active {
    display: block;
}

.ai-studio__vocals.is-disabled,
[data-ai-vocal-dependent].is-disabled {
    opacity: .35;
    pointer-events: none;
}

/* Disabled lyrics must not disable the instrumental switch itself. */
.ai-studio__lyrics-area.is-disabled .ai-studio__textarea-wrap,
.ai-studio__lyrics-area.is-disabled .ai-studio__assist-row {
    opacity: .35;
}

.ai-studio__hint {
    line-height: 1.45;
}

/*
 * На widescreen пользователь может менять ширину панели генератора.
 * По умолчанию оставляем прежние 5/12, максимум — 2/3 рабочей области.
 */
.ai-studio__split-columns {
    --ai-editor-width: 41.6667%;
}

.ai-studio__column-resizer {
    display: none;
}

@media screen and (min-width: 1216px) {
    .ai-studio__split-columns {
        position: relative;
    }

    .ai-studio__split-columns > .ai-studio__editor {
        flex: none !important;
        width: var(--ai-editor-width) !important;
        max-width: none !important;
    }

    .ai-studio__split-columns > .ai-studio__history {
        flex: none !important;
        width: calc(100% - var(--ai-editor-width)) !important;
        max-width: none !important;
    }

    .ai-studio__column-resizer {
        display: block;
        position: absolute;
        z-index: 25;
        top: .75rem;
        bottom: .75rem;
        left: var(--ai-editor-width);
        width: 13px;
        padding: 0;
        border: 0;
        background: transparent;
        transform: translateX(-6.5px);
        cursor: col-resize;
        touch-action: none;
        color: inherit;
    }

    .ai-studio__column-resizer::before {
        content: '';
        position: absolute;
        top: 0;
        bottom: 0;
        left: 50%;
        width: 1px;
        transform: translateX(-50%);
        background: var(--ai-panel-border);
        transition:
            width .15s ease,
            opacity .15s ease;
    }

    .ai-studio__column-resizer::after {
        content: '';
        position: absolute;
        left: 50%;
        top: 50%;
        width: 3px;
        height: 34px;
        border-radius: 999px;
        transform: translate(-50%, -50%);
        background: currentColor;
        opacity: .12;
        transition: opacity .15s ease;
    }

    .ai-studio__column-resizer:hover::before,
    .ai-studio__column-resizer:focus-visible::before,
    .ai-studio__column-resizer.is-dragging::before {
        width: 2px;
        opacity: .8;
    }

    .ai-studio__column-resizer:hover::after,
    .ai-studio__column-resizer:focus-visible::after,
    .ai-studio__column-resizer.is-dragging::after {
        opacity: .38;
    }
}

@media screen and (min-width: 1408px) {
    /*
     * Нижний плеер Rivrox занимает var(--sap-player-h) = 98px.
     *
     * Важно: section имеет p-5, а Bulma columns/column — собственные
     * вертикальные padding. Если их оставить снизу, рабочая область
     * визуально заканчивается заметно выше плеера.
     *
     * Поэтому на desktop:
     * - высота всей AI-зоны строго до верхней границы плеера;
     * - верхний padding страницы сохраняется;
     * - нижние padding AI-разметки убираются;
     * - скролл остаётся только внутри настроек / истории.
     */
    .ai-studio {
        box-sizing: border-box;
        height: calc(100dvh - var(--ai-player-h));
        min-height: 0;
        overflow: hidden;
        padding-bottom: 0 !important;
    }

    .ai-studio > .container,
    .ai-studio__workspace {
        height: 100%;
        min-height: 0;
    }

    .ai-studio > .container > .columns,
    .ai-studio__workspace > .columns {
        height: 100%;
        min-height: 0;
        margin-bottom: 0 !important;
    }

    .ai-studio > .container > .columns > .column,
    .ai-studio__workspace > .columns > .column {
        height: 100%;
        min-height: 0;
        padding-bottom: 0 !important;
        box-sizing: border-box;
    }

    .ai-studio__editor {
        display: flex;
        flex-direction: column;
        height: 100%;
        min-height: 0;
        overflow: hidden;
        padding-bottom: 0 !important;
        border-right: 0;
    }

    .ai-studio__topbar,
    .ai-studio__tabs {
        flex: 0 0 auto;
    }

    .ai-studio__editor-scroll {
        flex: 1 1 auto;
        min-height: 0;
        overflow-y: auto;
        overflow-x: hidden;
        overscroll-behavior: contain;
        scrollbar-width: thin;
        padding-right: .35rem;
        margin-right: -.35rem;
    }

    .ai-studio__create-wrap {
        margin-top: .55rem;
        padding-bottom: .55rem;
    }

    .ai-studio__history {
        height: 100%;
        min-height: 0;
        overflow: hidden;
        padding-bottom: 0 !important;
    }

    .ai-studio__history-scroll {
        height: 100%;
        min-height: 0;
        overflow-y: auto;
        overflow-x: hidden;
        overscroll-behavior: contain;
        scrollbar-width: thin;
        padding-right: .25rem;
        padding-bottom: .55rem;
        box-sizing: border-box;
    }
}


@media screen and (max-width: 1023px) {
    .ai-studio__workspace {
        min-height: 0;
        padding-left: var(--mobile-section-x, 1.25rem);
        padding-right: var(--mobile-section-x, 1.25rem);
    }

    .ai-studio__editor {
        border-right: 0;
        padding-right: .75rem;
    }

    .ai-studio__history {
        margin-top: 2rem;
        padding-left: .75rem;
    }

    .ai-studio__empty {
        min-height: 260px;
    }

}


/* ACE 5Hz-LM helpers: compact Bulma actions under lyrics/style fields. */
.ai-studio__assist-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .75rem;
    min-width: 0;
}

.ai-studio__assist-tooltip {
    display: inline-flex;
    align-items: center;
    flex: 0 0 auto;
}

.ai-studio__assist-tooltip[data-tooltip]::after {
    left: 0;
    transform: translateX(0) translateY(0);
}

.ai-studio__assist-tooltip[data-tooltip]::before {
    left: 17px;
    transform: translateX(-50%);
}

.ai-studio__assist-tooltip[data-tooltip]:hover::after {
    transform: translateX(0) translateY(-6px);
}

.ai-studio__assist-tooltip[data-tooltip]:hover::before {
    transform: translateX(-50%) translateY(-6px);
}

.ai-studio__assist-button {
    flex: 0 0 2.125rem;
    width: 2.125rem !important;
    min-width: 2.125rem;
    max-width: 2.125rem;
    height: 2.125rem !important;
    min-height: 2.125rem;
    max-height: 2.125rem;
    border-radius: 50% !important;
}

.ai-studio__assist-button img {
    width: 14px;
    height: 14px;
}

.ai-studio__assist-button.is-loading {
    pointer-events: none;
}

/* During ACE processing show only Bulma's loader, not loader + magic icon. */
.ai-studio__assist-button.is-loading .icon {
    visibility: hidden;
}


/* ==========================================================
   /create — перенесено из pages/create.php
   Единственный источник page-specific CSS.
   ========================================================== */
@keyframes aiStudioSpin {
    to { transform: rotate(360deg); }
}

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

.ai-studio__pending-progress {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
}

.ai-studio__pending-loader {
    display: inline-block;
    width: 16px;
    height: 16px;
    flex: 0 0 16px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    opacity: .65;
    animation: aiStudioSpin .7s linear infinite;
}

.ai-studio__pending-shimmer {
    display: inline-block;
    background-color: #aab4c4;
    background-image: linear-gradient(
        90deg,
        rgba(170, 180, 196, 1) 0%,
        rgba(170, 180, 196, 1) 38%,
        rgba(245, 247, 250, 1) 50%,
        rgba(170, 180, 196, 1) 62%,
        rgba(170, 180, 196, 1) 100%
    );
    background-size: 260% 100%;
    background-position: 100% 50%;
    background-repeat: no-repeat;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    animation: aiStudioPendingShimmer 2.6s linear infinite;
    will-change: background-position;
}

/* Планшеты: редактор и история должны идти друг под другом.
 * Десктопный split остаётся только с fullhd (>= 1408px). */
@media screen and (max-width: 1407px) {
    .ai-studio__workspace {
        height: auto !important;
        min-height: 0 !important;
        max-height: none !important;
        overflow: visible !important;
    }

    .ai-studio__split-columns {
        display: flex !important;
        flex-direction: column !important;
    }

    .ai-studio__split-columns > .ai-studio__editor,
    .ai-studio__split-columns > .ai-studio__history {
        flex: 0 0 100% !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .ai-studio__column-resizer {
        display: none !important;
    }

    .ai-studio__editor-scroll,
    .ai-studio__history-scroll {
        height: auto !important;
        min-height: 0 !important;
        max-height: none !important;
        overflow: visible !important;
    }

    .ai-studio__history {
        margin-top: 1.5rem;
    }
}

/* Размеры иконок, ранее заданные inline в pages/create.php. */
.ai-studio__credit-icon-image {
    width: 12px;
    height: 12px;
}

.ai-studio__loading-spinner {
    width: 18px;
    height: 18px;
}

/* Stable Audio /create: isolated instrumental editor styles (migrated from inline PHP). */
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__field-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 17px;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-control {
    display: block;
    width: 100%;
    max-width: none;
    min-width: 0;
    padding: 0;
    box-sizing: border-box;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel input[type="range"] {
    display: block;
    width: 100%;
    height: 6px;
    margin: 0;
    padding: 0;
    border: none;
    border-radius: 999px;
    background: linear-gradient(to right,
        #aeb8c6 0%, #aeb8c6 var(--ai-duration-fill, 50%),
        #3b414b var(--ai-duration-fill, 50%), #3b414b 100%);
    -webkit-appearance: none;
    appearance: none;
    outline-offset: 6px;
    cursor: pointer;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border: 3px solid #cbd3df;
    border-radius: 50%;
    background: #252b34;
    box-shadow: 0 0 0 2px #252b34;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel input[type="range"]::-moz-range-thumb {
    width: 10px;
    height: 10px;
    border: 3px solid #cbd3df;
    border-radius: 50%;
    background: #252b34;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel input[type="range"]:focus-visible {
    outline: 2px solid #cbd3df;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-limits {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 11px;
    color: #8c949f;
    font-size: .75rem;
    line-height: 1.4;
    font-variant-numeric: tabular-nums;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__prompt-hint { line-height: 1.45; }

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples { margin-top: 12px; }

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__examples-heading {
    display: flex; align-items: center; justify-content: space-between;
    gap: 10px; margin-bottom: 9px;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__examples-refresh {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 2px 4px; font: inherit; font-size: .75rem; line-height: 1.5;
    border: 0; background: transparent; color: #aeb9c9;
    cursor: pointer; white-space: nowrap;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__examples-refresh:hover { color: #f0f2f6; }

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__examples-refresh img { width: 14px; height: 14px; display: block; flex: none; object-fit: contain; }

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__preset-chips { display: flex; flex-wrap: wrap; gap: 7px; }

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__preset-chip {
    appearance: none; -webkit-appearance: none;
    background: rgba(157, 171, 191, .09); color: #d4dbe6;
    border: 1px solid rgba(165, 179, 201, .24);
    border-radius: 999px; padding: 5px 11px;
    font: inherit; font-size: .75rem; font-weight: 500; line-height: 1.3;
    cursor: pointer; transition: background-color .15s ease, border-color .15s ease;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__preset-chip:hover,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__preset-chip.is-active {
    background: rgba(167, 183, 208, .2);
    border-color: rgba(198, 208, 223, .55); color: #fff;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__preset-chip:focus-visible,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__examples-refresh:focus-visible {
    outline: 2px solid #c9d4e5; outline-offset: 3px;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__generation-form .ai-studio__style-textarea,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__generation-form .textarea,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__generation-form .input {
    border: 0;
    box-shadow: none;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__generation-form .ai-studio__style-textarea:focus,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__generation-form .textarea:focus,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__generation-form .input:focus {
    border: 0;
    box-shadow: none;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 7px;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__preset-chips {
    display: contents;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__preset-chip,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__preset-chip:hover,
.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__preset-chip.is-active {
    border: 0;
    box-shadow: none;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__preset-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 29px;
    padding: 5px 11px;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__examples-refresh {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 29px;
    width: 29px;
    height: 29px;
    min-width: 29px;
    min-height: 29px;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: rgba(157, 171, 191, .09);
    color: #d4dbe6;
    line-height: 1;
    box-shadow: none;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__examples-refresh:hover {
    background: rgba(167, 183, 208, .2);
    color: #fff;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__style-examples .ai-studio__examples-refresh-icon {
    display: block;
    width: 15px;
    height: 15px;
    flex: 0 0 15px;
    background-color: currentColor;
    -webkit-mask: url("/assets/icons/replace.svg") center / contain no-repeat;
    mask: url("/assets/icons/replace.svg") center / contain no-repeat;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__field-head {
    align-items: center;
    margin-bottom: 17px;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-entry {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    flex-wrap: nowrap;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-part {
    display: inline-flex;
    gap: 4px;
    align-items: center;
    padding: 5px 8px;
    background: #222831;
    border: 0;
    border-radius: 6px;
    color: #e4e7ec;
    font-size: .83rem;
    line-height: 22px;
    font-variant-numeric: tabular-nums;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-part input {
    display: block;
    box-sizing: content-box;
    min-width: 0;
    width: 3ch;
    height: 22px;
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: #e4e7ec;
    font: inherit;
    font-weight: 600;
    line-height: 22px;
    text-align: right;
    appearance: textfield;
    -moz-appearance: textfield;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-part span {
    font-size: .74rem;
    color: #9da6b4;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-part:focus-within {
    background: #2b323d;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-part input:focus-visible {
    outline: 2px solid rgba(196, 204, 218, .7);
    outline-offset: 3px;
    border-radius: 2px;
}

.ai-studio[data-ai-force-instrumental="1"] .ai-studio__duration-panel .ai-studio__duration-part input[aria-invalid="true"] {
    color: #e99a9a;
}