/* The field being dragged hangs from the body, outside the canvas, so it needs the colours too. */
.ffb-canvas,
.ffb-canvas-drag {
    --ffb-ring: color-mix(in oklab, var(--gray-950) 8%, transparent);
    --ffb-input-ring: var(--gray-200);
    --ffb-surface: #fff;
    --ffb-muted-surface: var(--gray-50);
    --ffb-primary-soft: color-mix(in oklab, var(--primary-500) 8%, transparent);
    --ffb-primary-ring: color-mix(in oklab, var(--primary-500) 35%, transparent);
}

.ffb-canvas {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: minmax(0, 1fr);
    font-size: 0.875rem;
    line-height: 1.25rem;
    color: var(--gray-950);
}

.dark .ffb-canvas,
.dark .ffb-canvas-drag {
    --ffb-ring: rgb(255 255 255 / 0.1);
    --ffb-input-ring: rgb(255 255 255 / 0.1);
    --ffb-surface: var(--gray-900);
    --ffb-muted-surface: rgb(255 255 255 / 0.03);
    --ffb-primary-soft: color-mix(in oklab, var(--primary-400) 12%, transparent);
    --ffb-primary-ring: color-mix(in oklab, var(--primary-400) 40%, transparent);
}

.dark .ffb-canvas {
    color: #fff;
}

@media (min-width: 1024px) {
    .ffb-canvas {
        grid-template-columns: minmax(0, 1fr) 17rem;
        align-items: start;
    }

    .ffb-canvas.ffb-canvas-readonly {
        grid-template-columns: minmax(0, 1fr);
    }
}

.ffb-canvas-main {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-width: 0;
}

.ffb-canvas-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--gray-600);
}

.dark .ffb-canvas-toolbar {
    color: var(--gray-400);
}

.ffb-canvas-layout {
    display: inline-flex;
    align-items: center;
    height: 1.5rem;
    padding: 0 0.5rem;
    border-radius: 0.375rem;
    background: var(--gray-100);
    font-weight: 500;
}

.dark .ffb-canvas-layout {
    background: rgb(255 255 255 / 0.05);
}

.ffb-canvas-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-left: auto;
}

.ffb-canvas-legend > span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.ffb-canvas-legend-icon {
    width: 0.875rem;
    height: 0.875rem;
    color: var(--gray-500);
}

.ffb-canvas-legend-icon-primary {
    color: var(--primary-600);
}

.ffb-canvas-scroll {
    overflow-x: auto;
    border-radius: 0.75rem;
}

.ffb-canvas-board {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 0.75rem;
    min-width: 40rem;
    padding: 1rem;
    border-radius: 0.75rem;
    background: var(--gray-100);
    box-shadow: inset 0 0 0 1px var(--gray-200);
}

.dark .ffb-canvas-board {
    background: rgb(255 255 255 / 0.02);
    box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.08);
}

.ffb-canvas-zone {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    min-width: 0;
}

.ffb-canvas-zone-marked {
    padding: 0.75rem;
    border: 1px dashed var(--ffb-primary-ring);
    border-radius: 0.625rem;
    background: var(--ffb-primary-soft);
}

.ffb-canvas-zone-label {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0;
    font-size: 0.75rem;
    color: var(--gray-600);
}

.ffb-canvas-zone-label strong {
    font-weight: 600;
    color: var(--primary-700);
}

.dark .ffb-canvas-zone-label {
    color: var(--gray-400);
}

.dark .ffb-canvas-zone-label strong {
    color: var(--primary-400);
}

.ffb-canvas-grid {
    --ffb-gap: 0.75rem;
    --ffb-guide: var(--gray-200);

    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    align-content: start;
    gap: var(--ffb-gap);
    min-height: 8rem;
    /* Sortable only appends when the pointer is well below the last field. */
    padding-bottom: 2rem;
    /* Lines where a quarter, third, half, two thirds and three quarters end. */
    background-image:
        linear-gradient(var(--ffb-guide), var(--ffb-guide)),
        linear-gradient(var(--ffb-guide), var(--ffb-guide)),
        linear-gradient(var(--ffb-guide), var(--ffb-guide)),
        linear-gradient(var(--ffb-guide), var(--ffb-guide)),
        linear-gradient(var(--ffb-guide), var(--ffb-guide));
    background-size: 1px 100%;
    background-repeat: no-repeat;
    background-origin: content-box;
    background-position:
        calc((100% + var(--ffb-gap)) * 3 / 12 - var(--ffb-gap) / 2) 0,
        calc((100% + var(--ffb-gap)) * 4 / 12 - var(--ffb-gap) / 2) 0,
        calc((100% + var(--ffb-gap)) * 6 / 12 - var(--ffb-gap) / 2) 0,
        calc((100% + var(--ffb-gap)) * 8 / 12 - var(--ffb-gap) / 2) 0,
        calc((100% + var(--ffb-gap)) * 9 / 12 - var(--ffb-gap) / 2) 0;
}

.ffb-canvas-grid[data-layout="two_columns"] {
    background-image: linear-gradient(var(--ffb-guide), var(--ffb-guide));
    background-position: calc((100% + var(--ffb-gap)) * 6 / 12 - var(--ffb-gap) / 2) 0;
}

.ffb-canvas-grid[data-layout="full_width"] {
    background-image: none;
}

.dark .ffb-canvas-grid {
    --ffb-guide: rgb(255 255 255 / 0.06);
}

.ffb-canvas-empty {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 2rem 1rem;
    text-align: center;
}

.ffb-canvas-empty-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 9999px;
    background: var(--gray-200);
    color: var(--gray-600);
}

.ffb-canvas-empty-icon svg {
    width: 1.25rem;
    height: 1.25rem;
}

.dark .ffb-canvas-empty-icon {
    background: rgb(255 255 255 / 0.08);
    color: var(--gray-300);
}

.ffb-canvas-empty-heading {
    margin: 0;
    font-weight: 600;
}

.ffb-canvas-empty-description {
    margin: 0;
    color: var(--gray-500);
}

.ffb-canvas-item {
    grid-column: span var(--ffb-span, 12) / span var(--ffb-span, 12);
    display: flex;
    flex-direction: column;
    min-width: 0;
    border-radius: 0.5rem;
    background: var(--ffb-surface);
    box-shadow: 0 0 0 1px var(--ffb-ring), 0 1px 2px rgb(0 0 0 / 0.05);
    cursor: grab;
}

.ffb-canvas-item:hover {
    box-shadow: 0 0 0 1px var(--ffb-primary-ring), 0 1px 2px rgb(0 0 0 / 0.05);
}

.ffb-canvas-item-selected,
.ffb-canvas-item-selected:hover {
    box-shadow: 0 0 0 2px var(--primary-600), 0 4px 12px rgb(0 0 0 / 0.08);
}

.dark .ffb-canvas-item-selected,
.dark .ffb-canvas-item-selected:hover {
    box-shadow: 0 0 0 2px var(--primary-500);
}

.ffb-canvas-item-fixed,
.ffb-canvas-item-fixed:hover {
    background: var(--ffb-muted-surface);
    box-shadow: 0 0 0 1px var(--ffb-ring);
    cursor: default;
}

.ffb-canvas-item-hidden,
.ffb-canvas-item-hidden:hover {
    box-shadow: none;
    outline: 1px dashed var(--gray-300);
}

.dark .ffb-canvas-item-hidden {
    outline-color: var(--gray-600);
}

.ffb-canvas-item-toolbar {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    min-height: 2.125rem;
    padding: 0 0.25rem 0 0.5rem;
    border-bottom: 1px solid var(--gray-100);
    font-size: 0.75rem;
    color: var(--gray-500);
}

.dark .ffb-canvas-item-toolbar {
    border-color: rgb(255 255 255 / 0.05);
    color: var(--gray-400);
}

.ffb-canvas-item-fixed .ffb-canvas-item-toolbar {
    padding-right: 0.625rem;
}

.ffb-canvas-item-grip {
    width: 0.75rem;
    height: 0.75rem;
    flex-shrink: 0;
    color: var(--gray-400);
}

.ffb-canvas-item-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.ffb-canvas-item-type {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ffb-canvas-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    min-width: 0;
    max-width: 12rem;
    height: 1.25rem;
    padding: 0 0.375rem;
    border-radius: 0.375rem;
    background: var(--gray-100);
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--gray-600);
    white-space: nowrap;
}

.dark .ffb-canvas-badge {
    background: rgb(255 255 255 / 0.06);
    color: var(--gray-300);
}

.ffb-canvas-badge-primary {
    background: var(--ffb-primary-soft);
    color: var(--primary-700);
}

.dark .ffb-canvas-badge-primary {
    color: var(--primary-400);
}

.ffb-canvas-badge-danger {
    background: var(--danger-50);
    color: var(--danger-700);
}

.dark .ffb-canvas-badge-danger {
    background: color-mix(in oklab, var(--danger-400) 12%, transparent);
    color: var(--danger-400);
}

.ffb-canvas-item-taken .ffb-canvas-item-preview {
    opacity: 0.5;
}

.ffb-canvas-badge-icon {
    width: 0.75rem;
    height: 0.75rem;
    flex-shrink: 0;
}

.ffb-canvas-badge-text {
    overflow: hidden;
    text-overflow: ellipsis;
}

.ffb-canvas-item-span {
    padding: 0 0.25rem;
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    color: var(--gray-600);
}

.dark .ffb-canvas-item-span {
    color: var(--gray-300);
}

.ffb-canvas-width-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.125rem;
    height: 1.5rem;
    padding: 0 0.25rem 0 0.5rem;
    border-radius: 0.375rem;
    background: var(--gray-100);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
    color: var(--gray-700);
    cursor: pointer;
}

.ffb-canvas-width-trigger:hover {
    background: var(--ffb-primary-soft);
    box-shadow: inset 0 0 0 1px var(--ffb-primary-ring);
    color: var(--primary-700);
}

.dark .ffb-canvas-width-trigger {
    background: rgb(255 255 255 / 0.06);
    color: var(--gray-200);
}

.ffb-canvas-width-chevron {
    width: 0.75rem;
    height: 0.75rem;
}

.ffb-canvas-width-option {
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

/* A row in miniature, filled as far as the width reaches. */
.ffb-canvas-width-bar {
    flex-shrink: 0;
    width: 2.25rem;
    height: 0.375rem;
    border-radius: 0.1875rem;
    background: linear-gradient(to right, currentColor calc(var(--ffb-fill) / 12 * 100%), var(--gray-200) 0);
}

.dark .ffb-canvas-width-bar {
    background: linear-gradient(to right, currentColor calc(var(--ffb-fill) / 12 * 100%), rgb(255 255 255 / 0.1) 0);
}

.ffb-canvas-width-label {
    width: 1.5rem;
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

.ffb-canvas-item-actions {
    display: flex;
    align-items: center;
}

.ffb-canvas-item-preview {
    flex: 1;
    padding: 0.625rem 0.75rem 0.5rem;
    cursor: pointer;
}

.ffb-canvas-item-fixed .ffb-canvas-item-preview {
    cursor: default;
}

.ffb-canvas-ghost {
    opacity: 0.4;
}

.ffb-canvas-sidebar {
    position: sticky;
    top: 5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    min-width: 0;
}

.ffb-canvas-search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    height: 2.25rem;
    padding: 0 0.75rem;
    border-radius: 0.5rem;
    background: var(--ffb-surface);
    box-shadow: 0 0 0 1px var(--ffb-input-ring), 0 1px 2px rgb(0 0 0 / 0.05);
    color: var(--gray-500);
}

.ffb-canvas-search:focus-within {
    box-shadow: 0 0 0 2px var(--primary-600);
}

.ffb-canvas-search-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.ffb-canvas-search-input {
    flex: 1;
    min-width: 0;
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    font: inherit;
    color: var(--gray-950);
}

.ffb-canvas-search-input:focus {
    box-shadow: none;
}

.dark .ffb-canvas-search-input {
    color: #fff;
}

.ffb-canvas-palette-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ffb-canvas-palette-heading {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
}

.ffb-canvas-palette {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.5rem;
}

.ffb-canvas-palette-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 0;
    min-height: 2.25rem;
    padding: 0.375rem 0.625rem;
    border-radius: 0.5rem;
    background: var(--ffb-surface);
    box-shadow: 0 0 0 1px var(--ffb-ring), 0 1px 2px rgb(0 0 0 / 0.05);
    font-size: 0.8125rem;
    line-height: 1.125rem;
    font-weight: 500;
    color: var(--gray-700);
    text-align: left;
    cursor: grab;
}

.dark .ffb-canvas-palette-item {
    color: var(--gray-200);
}

.ffb-canvas-palette-item:hover {
    box-shadow: 0 0 0 1px var(--ffb-primary-ring), 0 1px 2px rgb(0 0 0 / 0.05);
    color: var(--primary-700);
}

.dark .ffb-canvas-palette-item:hover {
    color: var(--primary-400);
}

.ffb-canvas-palette-icon {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    color: var(--gray-500);
}

.ffb-canvas-palette-item:hover .ffb-canvas-palette-icon {
    color: var(--primary-600);
}

.ffb-canvas-drag,
.ffb-canvas-drag:hover {
    box-shadow: 0 0 0 1px var(--ffb-primary-ring), 0 8px 20px rgb(0 0 0 / 0.12);
    cursor: grabbing;
}

.ffb-canvas-palette-hint {
    margin: 0;
    font-size: 0.75rem;
    line-height: 1.125rem;
    color: var(--gray-500);
}

/* A palette item dragged over the canvas marks where the new field will land. */
.ffb-canvas-grid > .ffb-canvas-palette-item {
    grid-column: span var(--ffb-span, 12) / span var(--ffb-span, 12);
    justify-content: center;
    height: 4rem;
    border: 1.5px dashed var(--primary-500);
    background: var(--ffb-primary-soft);
    box-shadow: none;
    color: var(--primary-700);
    font-weight: 600;
}

.ffb-canvas-grid:has(> .ffb-canvas-palette-item) > .ffb-canvas-empty {
    display: none;
}

.ffb-canvas-grid > .ffb-canvas-palette-item[data-width-label]::after {
    content: '· ' attr(data-width-label);
}

.ffb-preview {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    font-size: 0.875rem;
    color: var(--gray-950);
}

.dark .ffb-preview {
    color: #fff;
}

.ffb-preview-hidden {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.25rem 0.75rem;
}

.ffb-preview-hidden .ffb-preview-key {
    margin-left: auto;
}

.ffb-preview-label {
    font-weight: 500;
}

.ffb-preview-required {
    color: var(--danger-600);
}

.ffb-preview-description,
.ffb-preview-muted {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--gray-500);
}

.ffb-preview-key {
    font-family: 'DM Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 0.6875rem;
    color: var(--gray-500);
}

.ffb-preview-input {
    display: flex;
    align-items: center;
    min-height: 2.25rem;
    padding: 0 0.75rem;
    border-radius: 0.5rem;
    background: var(--ffb-surface, #fff);
    box-shadow: 0 0 0 1px var(--ffb-input-ring, var(--gray-200)), 0 1px 2px rgb(0 0 0 / 0.05);
    color: var(--gray-500);
}

.dark .ffb-preview-input {
    background: rgb(255 255 255 / 0.05);
}

.ffb-preview-textarea {
    align-items: flex-start;
    min-height: 4.5rem;
    padding-top: 0.5rem;
}

.ffb-preview-dropzone {
    justify-content: center;
    min-height: 3.5rem;
    box-shadow: none;
    outline: 1px dashed var(--gray-300);
}

.ffb-preview-dropdown {
    position: relative;
    padding-right: 2rem;
}

.ffb-preview-dropdown::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 0.875rem;
    width: 0.375rem;
    height: 0.375rem;
    border-right: 1.5px solid var(--gray-400);
    border-bottom: 1.5px solid var(--gray-400);
    transform: translateY(-70%) rotate(45deg);
}

.ffb-preview-recaptcha {
    max-width: 16rem;
}

.ffb-preview-options {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.ffb-preview-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ffb-preview-check {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
    border-radius: 0.25rem;
    background: var(--ffb-surface, #fff);
    box-shadow: 0 0 0 1px var(--gray-300);
}

.ffb-preview-check-round {
    border-radius: 9999px;
}

.ffb-preview-check-on {
    background: var(--primary-600);
    box-shadow: inset 0 0 0 3px var(--ffb-surface, #fff), 0 0 0 1px var(--primary-600);
}

.ffb-preview-value {
    color: var(--gray-950);
}

.dark .ffb-preview-value {
    color: #fff;
}

.ffb-preview-badge {
    margin-left: 0.375rem;
    padding: 0 0.375rem;
    border-radius: 0.375rem;
    background: var(--gray-100);
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--gray-600);
}

.dark .ffb-preview-badge {
    background: rgb(255 255 255 / 0.1);
    color: var(--gray-300);
}

.ffb-preview-heading {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-size: 1.25rem;
    line-height: 1.75rem;
    font-weight: 700;
}

.ffb-preview-text {
    color: var(--gray-600);
}

.dark .ffb-preview-text {
    color: var(--gray-300);
}

.ffb-preview-button {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    height: 2.25rem;
    padding: 0 0.75rem;
    border-radius: 0.5rem;
    background: var(--gray-900);
    font-weight: 600;
    color: #fff;
}

.ffb-settings-preview {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
    border-radius: 0.5rem;
    background: var(--gray-50);
    box-shadow: inset 0 0 0 1px var(--gray-100);
}

.dark .ffb-settings-preview {
    background: rgb(255 255 255 / 0.03);
    box-shadow: inset 0 0 0 1px rgb(255 255 255 / 0.06);
}

/* The key has a field of its own on the Advanced tab. */
.ffb-settings-preview .ffb-preview-key {
    display: none;
}

.ffb-settings-preview-heading {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-600);
}

.ffb-preview-consent a {
    color: var(--primary-600);
    text-decoration: underline;
}

.dark .ffb-preview-consent a {
    color: var(--primary-400);
}

.ffb-preview-date {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--gray-400);
}

.ffb-preview-date-icon {
    width: 1rem;
    height: 1rem;
}

/* Steps: the start block is step 1 and every step field counts on from there. */
.ffb-canvas-board {
    counter-reset: ffb-step;
}

.ffb-canvas-start-editable,
.ffb-canvas-start-editable:hover {
    cursor: pointer;
}

.ffb-canvas-start-editable:hover {
    box-shadow: 0 0 0 1px var(--ffb-primary-ring);
}

.ffb-preview-step {
    counter-increment: ffb-step;
    gap: 0.125rem;
    padding-left: 0.75rem;
    border-left: 3px solid var(--primary-500);
}

.ffb-preview-step-number {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--primary-600);
}

.ffb-preview-step-number::before {
    content: attr(data-label) " " counter(ffb-step);
}

.dark .ffb-preview-step-number {
    color: var(--primary-400);
}