.page-tool--css-grid-generator .tool-page {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Studio layout: primary controls beside the reacting live preview. */
.page-tool--css-grid-generator .gg-studio {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 16px;
    align-items: start;
}

.page-tool--css-grid-generator .gg-visual {
    display: flex;
    flex-direction: column;
    gap: 16px;
    min-width: 0;
}

.page-tool--css-grid-generator .gg-preview {
    position: sticky;
    top: calc(var(--header-h) + 16px);
}

.page-tool--css-grid-generator .gg-controls__body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.page-tool--css-grid-generator .gg-hint {
    margin: 0;
    color: var(--muted);
    font-size: 0.82rem;
}

.page-tool--css-grid-generator .gg-hint code {
    padding: 0.05rem 0.3rem;
    border-radius: var(--radius-xs);
    background: var(--surface-3);
    color: var(--ink-2);
    font-family: var(--font-mono);
}

.page-tool--css-grid-generator .gg-subtitle {
    margin: 0 0 8px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
}

/* Presets. */
.page-tool--css-grid-generator .gg-presets-wrap {
    display: flex;
    flex-direction: column;
}

.page-tool--css-grid-generator .gg-presets {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
    gap: 8px;
}

.page-tool--css-grid-generator .gg-preset {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface-2);
    color: var(--ink-2);
    font-size: 0.76rem;
    text-align: left;
    cursor: pointer;
}

.page-tool--css-grid-generator .gg-preset:hover {
    border-color: var(--accent);
    color: var(--ink);
}

.page-tool--css-grid-generator .gg-preset:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

.page-tool--css-grid-generator .gg-preset__shape {
    font-family: var(--font-mono);
    font-size: 0.66rem;
    color: var(--faint);
}

/* Numeric fields. */
.page-tool--css-grid-generator .gg-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px 16px;
}

.page-tool--css-grid-generator .gg-control {
    display: grid;
    gap: 3px;
    min-width: 0;
}

.page-tool--css-grid-generator .gg-control__top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    min-width: 0;
}

.page-tool--css-grid-generator .gg-control__label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--faint);
}

.page-tool--css-grid-generator .gg-control__range {
    width: 100%;
    height: 1.6rem;
    margin: 0;
    accent-color: var(--accent);
    cursor: pointer;
}

.page-tool--css-grid-generator .gg-control__number {
    flex: 0 0 4.25rem;
    width: 4.25rem;
    min-height: 1.9rem;
    padding: 0.15rem 0.35rem;
    border-color: var(--line);
    background: var(--surface-3);
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-align: right;
}

/* Track sizing. */
.page-tool--css-grid-generator .gg-tracks-wrap {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.page-tool--css-grid-generator .gg-tracks-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.page-tool--css-grid-generator .gg-tracks-label {
    margin: 0;
    font-size: 0.78rem;
    color: var(--muted);
}

.page-tool--css-grid-generator .gg-tracks {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.page-tool--css-grid-generator .gg-track {
    display: grid;
    grid-template-columns: 1.4rem minmax(0, 1fr) 5.25rem 4rem;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.page-tool--css-grid-generator .gg-track__index {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--faint);
    text-align: right;
}

.page-tool--css-grid-generator .gg-track__range {
    width: 100%;
    height: 1.5rem;
    margin: 0;
    accent-color: var(--accent);
    cursor: pointer;
}

.page-tool--css-grid-generator .gg-track__range:disabled {
    opacity: 0.4;
    cursor: default;
}

.page-tool--css-grid-generator .gg-track__unit,
.page-tool--css-grid-generator .gg-track__number {
    min-height: 1.85rem;
    padding: 0.1rem 0.3rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
}

.page-tool--css-grid-generator .gg-track__number {
    width: 4rem;
    text-align: right;
}

.page-tool--css-grid-generator .gg-track__number:disabled {
    opacity: 0.4;
    cursor: default;
}

/* Named areas. */
.page-tool--css-grid-generator .gg-areas {
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-2);
}

.page-tool--css-grid-generator .gg-areas__summary {
    padding: 10px 12px;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--ink-2);
    cursor: pointer;
}

.page-tool--css-grid-generator .gg-areas__summary:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

.page-tool--css-grid-generator .gg-areas__note {
    color: var(--faint);
    text-transform: none;
    letter-spacing: 0;
}

.page-tool--css-grid-generator .gg-areas__body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0 12px 12px;
}

.page-tool--css-grid-generator .gg-area-add {
    display: flex;
    gap: 8px;
}

.page-tool--css-grid-generator .gg-area-add .input {
    flex: 1 1 auto;
    min-width: 0;
}

.page-tool--css-grid-generator .gg-area-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.page-tool--css-grid-generator .gg-area-item {
    display: inline-flex;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: var(--surface);
    overflow: hidden;
}

.page-tool--css-grid-generator .gg-area-item:hover {
    border-color: var(--accent);
}

.page-tool--css-grid-generator .gg-area-item.is-active {
    border-color: var(--accent);
    background: var(--accent-soft);
}

.page-tool--css-grid-generator .gg-area-chip {
    border: 0;
    padding: 4px 9px;
    background: transparent;
    color: var(--ink-2);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    cursor: pointer;
}

.page-tool--css-grid-generator .gg-area-chip:hover,
.page-tool--css-grid-generator .gg-area-item.is-active .gg-area-chip {
    color: var(--accent);
}

.page-tool--css-grid-generator .gg-area-chip:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
}

.page-tool--css-grid-generator .gg-area-chip__remove {
    border: 0;
    padding: 4px 8px 4px 2px;
    background: transparent;
    color: var(--muted);
    font-size: 0.8rem;
    line-height: 1;
    cursor: pointer;
}

.page-tool--css-grid-generator .gg-area-chip__remove:hover {
    color: var(--danger);
}

.page-tool--css-grid-generator .gg-paint {
    display: grid;
    gap: 4px;
}

.page-tool--css-grid-generator .gg-paint__cell {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 2px 4px;
    border: 1px dashed var(--line);
    border-radius: var(--radius-xs);
    background: var(--surface);
    color: var(--faint);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    user-select: none;
}

.page-tool--css-grid-generator .gg-paint__cell:hover {
    border-color: var(--accent);
}

.page-tool--css-grid-generator .gg-paint__cell.is-filled {
    border-style: solid;
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
}

.page-tool--css-grid-generator .gg-paint__cell:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 1px;
}

/* Live preview. */
.page-tool--css-grid-generator .gg-preview__body {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.page-tool--css-grid-generator .gg-stage {
    display: flex;
    align-items: stretch;
    justify-content: center;
    min-height: 320px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface-3);
}

.page-tool--css-grid-generator .gg-demo {
    display: grid;
    width: 100%;
    min-height: 288px;
    border-radius: var(--radius-sm);
}

.page-tool--css-grid-generator .gg-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    min-width: 0;
    padding: 6px;
    border: 1px solid var(--line);
    border-radius: var(--radius-xs);
    background: var(--surface);
    color: var(--faint);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    overflow: hidden;
    text-overflow: ellipsis;
}

.page-tool--css-grid-generator .gg-cell--area {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: var(--accent);
}

/* Output. */
.page-tool--css-grid-generator .gg-output__body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.page-tool--css-grid-generator .gg-status {
    margin: 0;
    font-size: 0.8rem;
}

.page-tool--css-grid-generator .gg-code {
    min-height: 8rem;
    max-height: 18rem;
    white-space: pre;
    overflow: auto;
}

.page-tool--css-grid-generator .gg-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.page-tool--css-grid-generator .gg-about__text {
    max-width: 80ch;
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.page-tool--css-grid-generator .gg-about__text code {
    padding: 0.05rem 0.3rem;
    border-radius: var(--radius-xs);
    background: var(--surface-3);
    color: var(--ink-2);
    font-family: var(--font-mono);
}

@media (max-width: 900px) {
    .page-tool--css-grid-generator .gg-studio {
        grid-template-columns: 1fr;
    }

    .page-tool--css-grid-generator .gg-preview {
        position: static;
    }

    .page-tool--css-grid-generator .gg-stage {
        min-height: 240px;
    }

    .page-tool--css-grid-generator .gg-demo {
        min-height: 208px;
    }
}

@media (max-width: 560px) {
    .page-tool--css-grid-generator .gg-fields {
        grid-template-columns: 1fr;
    }

    .page-tool--css-grid-generator .gg-track {
        grid-template-columns: 1.2rem minmax(0, 1fr) 5rem;
    }

    .page-tool--css-grid-generator .gg-track__number {
        grid-column: 1 / -1;
        justify-self: end;
    }
}