/**
 * Dashboard styles.
 * Scoped under .fbs-app so a host theme cannot bleed into the app.
 */

.fbs-app {
	--fbs-bg: #f6f8fb;
	--fbs-panel: #ffffff;
	--fbs-line: #e2e8f0;
	--fbs-ink: #0f172a;
	--fbs-muted: #64748b;
	--fbs-accent: #2563eb;
	--fbs-accent-dark: #1d4ed8;
	--fbs-accent-soft: #e6f0fd;
	--fbs-danger: #dc2626;
	--fbs-radius: 10px;

	box-sizing: border-box;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	font-size: 14px;
	line-height: 1.5;
	color: var(--fbs-ink);
	background: var(--fbs-bg);
	border-radius: var(--fbs-radius);
	overflow: hidden;
}

.fbs-app *,
.fbs-app *::before,
.fbs-app *::after {
	box-sizing: inherit;
}

@media ( prefers-color-scheme: dark ) {
	.fbs-app {
		--fbs-bg: #0b1220;
		--fbs-panel: #121a2b;
		--fbs-line: #24304a;
		--fbs-ink: #e8edf7;
		--fbs-muted: #93a1bb;
		--fbs-accent-soft: #1b2b45;
	}

	/* Only the generic badge: the per-type colours below stay as they are. */
	.fbs-app .fbs-item-ico {
		background: #1b2439;
		color: #aab6cd;
	}
}

/* Top bar ---------------------------------------------------------- */



.fbs-brand {
	display: flex;
	align-items: center;
	gap: 8px;
	font-weight: 700;
}

.fbs-brand-mark {
	width: 22px;
	height: 22px;
	border-radius: 6px;
	background: linear-gradient( 135deg, var(--fbs-accent), #7c3aed );
}











.fbs-plan-chip {
	font-size: 12px;
	color: var(--fbs-muted);
	border: 1px solid var(--fbs-line);
	padding: 4px 9px;
	border-radius: 20px;
	white-space: nowrap;
}

/* Buttons ---------------------------------------------------------- */

.fbs-btn {
	display: inline-block;
	border: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	color: var(--fbs-ink);
	padding: 7px 13px;
	border-radius: 8px;
	cursor: pointer;
	font: inherit;
	text-decoration: none;
	line-height: 1.4;
}

.fbs-btn:hover {
	border-color: var(--fbs-accent);
}

.fbs-btn-primary {
	background: var(--fbs-accent);
	border-color: var(--fbs-accent);
	color: #fff;
}

.fbs-btn-danger {
	color: var(--fbs-danger);
	border-color: #fecaca;
}

.fbs-btn-ghost {
	background: transparent;
	border-color: transparent;
	color: var(--fbs-muted);
}

.fbs-btn-sm {
	padding: 4px 9px;
	font-size: 12px;
}

.fbs-icon-btn {
	border: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	width: 30px;
	height: 28px;
	border-radius: 7px;
	cursor: pointer;
	color: var(--fbs-ink);
}

/* Forms ------------------------------------------------------------ */

.fbs-input {
	width: 100%;
	padding: 7px 10px;
	border: 1px solid var(--fbs-line);
	border-radius: 8px;
	background: var(--fbs-panel);
	color: var(--fbs-ink);
	font: inherit;
}

.fbs-input-sm {
	padding: 4px 7px;
	font-size: 12px;
}

.fbs-field {
	display: block;
	margin-bottom: 10px;
}

.fbs-field > span {
	display: block;
	font-size: 12px;
	color: var(--fbs-muted);
	margin-bottom: 3px;
}

.fbs-row {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 8px;
}

.fbs-grid4 {
	display: grid;
	grid-template-columns: repeat( 4, 1fr );
	gap: 6px;
}

.fbs-check,
.fbs-checks label {
	display: flex;
	align-items: center;
	gap: 6px;
	font-size: 13px;
	margin-bottom: 5px;
	cursor: pointer;
}

.fbs-checks {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 2px 10px;
	margin-bottom: 12px;
}

.fbs-hint {
	font-size: 12px;
	color: var(--fbs-muted);
	margin: 6px 0;
}

/* Body / views ----------------------------------------------------- */

.fbs-body {
	padding: 20px;
	min-height: 60vh;
	flex: 1;
}

.fbs-toolbar {
	display: flex;
	gap: 8px;
	margin-bottom: 14px;
	flex-wrap: wrap;
}

.fbs-toolbar .fbs-input {
	width: auto;
	min-width: 150px;
}

.fbs-search {
	flex: 1;
	min-width: 180px !important;
}

.fbs-bulkbar {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 8px 12px;
	background: var(--fbs-panel);
	border: 1px solid var(--fbs-line);
	border-radius: 8px;
	margin-bottom: 12px;
	font-size: 13px;
	flex-wrap: wrap;
}

/* Library grid ----------------------------------------------------- */

.fbs-grid {
	display: grid;
	grid-template-columns: repeat( auto-fill, minmax( 210px, 1fr ) );
	gap: 14px;
}

.fbs-card-book {
	position: relative;
	background: var(--fbs-panel);
	border: 1px solid var(--fbs-line);
	border-radius: var(--fbs-radius);
	overflow: hidden;
}

.fbs-pick {
	position: absolute;
	top: 8px;
	left: 8px;
	z-index: 2;
	background: rgba( 255, 255, 255, .9 );
	border-radius: 5px;
	padding: 2px 4px;
}

.fbs-card-cover {
	position: relative;
	aspect-ratio: 3 / 4;
	background: #e9eef5;
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	overflow: hidden;
}

.fbs-card-cover img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.fbs-card-noimg {
	color: var(--fbs-muted);
	font-weight: 700;
}

.fbs-badge {
	position: absolute;
	right: 8px;
	bottom: 8px;
	background: rgba( 15, 23, 42, .78 );
	color: #fff;
	font-size: 11px;
	padding: 2px 7px;
	border-radius: 20px;
}

.fbs-badge.is-live {
	background: #16a34a;
}

.fbs-card-body {
	padding: 10px 12px 12px;
}

.fbs-card-body h4 {
	margin: 0 0 3px;
	font-size: 14px;
	cursor: pointer;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.fbs-card-meta {
	margin: 0 0 8px;
	font-size: 12px;
	color: var(--fbs-muted);
}

.fbs-card-actions {
	display: flex;
	gap: 5px;
	flex-wrap: wrap;
}

.fbs-empty {
	text-align: center;
	padding: 48px 16px;
	color: var(--fbs-muted);
}

/* Editor ----------------------------------------------------------- */





.fbs-side h4,
.fbs-props h4 {
	margin: 14px 0 7px;
	font-size: 12px;
	text-transform: uppercase;
	letter-spacing: .05em;
	color: var(--fbs-muted);
}

.fbs-back {
	border: 0;
	background: none;
	color: var(--fbs-accent);
	cursor: pointer;
	padding: 0 0 10px;
	font: inherit;
}

.fbs-page-ops,
.fbs-preset-row,
.fbs-record {
	display: flex;
	gap: 6px;
	flex-wrap: wrap;
	margin-bottom: 8px;
}

.fbs-chip {
	display: inline-block;
	border: 1px solid var(--fbs-line);
	background: var(--fbs-bg);
	padding: 4px 9px;
	border-radius: 20px;
	font-size: 12px;
	cursor: pointer;
	margin: 0 4px 4px 0;
}

/* Stage ------------------------------------------------------------ */


.fbs-stage-title {
	font-weight: 600;
}

.fbs-stage-actions {
	display: flex;
	gap: 6px;
	flex-wrap: wrap;
}

.fbs-canvas-wrap {
	background: #eef2f7;
	border-radius: 8px;
	padding: 14px;
	display: flex;
	justify-content: center;
}

.fbs-canvas {
	position: relative;
	max-width: 100%;
	box-shadow: 0 2px 14px rgba( 0, 0, 0, .14 );
	background: #fff;
	line-height: 0;
}

.fbs-canvas-img {
	display: block;
	max-width: 100%;
	max-height: 60vh;
	width: auto;
}

.fbs-layer,
.fbs-guides {
	position: absolute;
	inset: 0;
	pointer-events: none;
}

.fbs-canvas.is-editing .fbs-layer {
	pointer-events: auto;
}

/* "Stop editing" drops the element chrome so the page reads as a reader
   sees it. The boxes are still there, just not drawn over the artwork. */
.fbs-canvas:not(.is-editing) .fbs-el {
	border-color: transparent;
	background: none;
	cursor: default;
}

.fbs-canvas:not(.is-editing) .fbs-el-label,
.fbs-canvas:not(.is-editing) .fbs-h {
	display: none;
}

/* Element boxes ---------------------------------------------------- */

.fbs-el {
	position: absolute;
	border: 1.5px dashed rgba( 37, 99, 235, .85 );
	background: rgba( 37, 99, 235, .09 );
	cursor: move;
	line-height: 1.2;
}

.fbs-el.is-selected {
	border-style: solid;
	border-color: #f59e0b;
	background: rgba( 245, 158, 11, .14 );
	z-index: 999 !important;
}

.fbs-el-label {
	position: absolute;
	top: -17px;
	left: 0;
	font-size: 10px;
	background: #1f2937;
	color: #fff;
	padding: 1px 5px;
	border-radius: 4px;
	white-space: nowrap;
	pointer-events: none;
}

.fbs-h {
	position: absolute;
	width: 9px;
	height: 9px;
	background: #fff;
	border: 1.5px solid #f59e0b;
	border-radius: 2px;
	display: none;
}

.fbs-el.is-selected .fbs-h {
	display: block;
}

.fbs-h-nw { top: -5px; left: -5px; cursor: nwse-resize; }
.fbs-h-n  { top: -5px; left: 50%; margin-left: -4px; cursor: ns-resize; }
.fbs-h-ne { top: -5px; right: -5px; cursor: nesw-resize; }
.fbs-h-e  { top: 50%; right: -5px; margin-top: -4px; cursor: ew-resize; }
.fbs-h-se { bottom: -5px; right: -5px; cursor: nwse-resize; }
.fbs-h-s  { bottom: -5px; left: 50%; margin-left: -4px; cursor: ns-resize; }
.fbs-h-sw { bottom: -5px; left: -5px; cursor: nesw-resize; }
.fbs-h-w  { top: 50%; left: -5px; margin-top: -4px; cursor: ew-resize; }

.fbs-guide {
	position: absolute;
	background: #ec4899;
}

.fbs-guide-v {
	top: 0;
	bottom: 0;
	width: 1px;
}

.fbs-guide-h {
	left: 0;
	right: 0;
	height: 1px;
}

/* Stage foot ------------------------------------------------------- */





.fbs-thumb {
	position: relative;
	border: 2px solid transparent;
	background: none;
	padding: 0;
	cursor: pointer;
	border-radius: 4px;
	overflow: hidden;
	flex: 0 0 auto;
}

.fbs-thumb img {
	display: block;
	width: 42px;
	height: 56px;
	object-fit: cover;
}

.fbs-thumb span {
	position: absolute;
	right: 1px;
	bottom: 1px;
	font-size: 9px;
	background: rgba( 0, 0, 0, .6 );
	color: #fff;
	padding: 0 3px;
	border-radius: 3px;
}

.fbs-thumb.is-active {
	border-color: var(--fbs-accent);
}



.fbs-sep {
	width: 1px;
	height: 18px;
	background: var(--fbs-line);
	margin: 0 4px;
}

.fbs-page-count {
	font-size: 12px;
	color: var(--fbs-muted);
	white-space: nowrap;
}

.fbs-props-empty {
	color: var(--fbs-muted);
	font-size: 13px;
	padding: 20px 0;
	text-align: center;
}

.fbs-props-actions {
	display: flex;
	gap: 5px;
	margin-top: 12px;
	flex-wrap: wrap;
}

/* Sticker and shape pickers ---------------------------------------- */

.fbs-sticker-grid {
	display: grid;
	grid-template-columns: repeat( 6, 1fr );
	gap: 4px;
	margin-bottom: 12px;
}

.fbs-sticker {
	border: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	border-radius: 7px;
	padding: 6px 0;
	font-size: 17px;
	cursor: pointer;
	line-height: 1.2;
	color: var(--fbs-ink);
}

.fbs-sticker:hover {
	border-color: var(--fbs-accent);
	background: var(--fbs-bg);
}

/* Form and quiz builders ------------------------------------------- */

.fbs-builder {
	display: grid;
	gap: 6px;
	margin-bottom: 8px;
}

.fbs-builder-row {
	display: grid;
	grid-template-columns: 1fr 1fr auto auto auto;
	gap: 4px;
	align-items: center;
	background: var(--fbs-bg);
	border: 1px solid var(--fbs-line);
	border-radius: 8px;
	padding: 6px;
}

.fbs-builder-row.is-quiz {
	grid-template-columns: 1fr 1.4fr 48px auto;
	align-items: start;
}

.fbs-builder-row input[type="text"],
.fbs-builder-row input[type="number"],
.fbs-builder-row textarea,
.fbs-builder-row select {
	font-size: 11.5px;
	padding: 4px 6px;
	min-width: 0;
}

.fbs-builder-row textarea {
	resize: vertical;
	font-family: inherit;
}

.fbs-builder-row .fbs-check {
	font-size: 11px;
	white-space: nowrap;
	margin: 0;
}

.fbs-mini {
	font-size: 11px;
	color: var(--fbs-muted);
	display: flex;
	align-items: center;
	gap: 3px;
	white-space: nowrap;
}

.fbs-mini input {
	width: auto !important;
}

.fbs-row-del {
	border: 0;
	background: none;
	color: var(--fbs-danger);
	cursor: pointer;
	font-size: 16px;
	line-height: 1;
	padding: 2px 5px;
}

.fbs-props input,
.fbs-props select,
.fbs-props textarea {
	width: 100%;
	padding: 5px 7px;
	border: 1px solid var(--fbs-line);
	border-radius: 6px;
	background: var(--fbs-panel);
	color: var(--fbs-ink);
	font: inherit;
	font-size: 12px;
}

.fbs-props .fbs-check input {
	width: auto;
}

/* Data views ------------------------------------------------------- */

.fbs-kpis {
	display: grid;
	grid-template-columns: repeat( auto-fit, minmax( 140px, 1fr ) );
	gap: 10px;
	margin-bottom: 20px;
}

.fbs-kpi {
	background: var(--fbs-panel);
	border: 1px solid var(--fbs-line);
	border-radius: var(--fbs-radius);
	padding: 14px;
	text-align: center;
}

.fbs-kpi strong {
	display: block;
	font-size: 24px;
}

.fbs-kpi span {
	font-size: 12px;
	color: var(--fbs-muted);
}

.fbs-bars {
	display: grid;
	gap: 3px;
	margin-bottom: 20px;
}

.fbs-bar-row {
	display: grid;
	grid-template-columns: 38px 1fr 48px;
	gap: 8px;
	align-items: center;
	font-size: 12px;
	color: var(--fbs-muted);
}

.fbs-bar {
	background: var(--fbs-line);
	height: 14px;
	border-radius: 7px;
	overflow: hidden;
}

.fbs-bar i {
	display: block;
	height: 100%;
	background: var(--fbs-accent);
}

.fbs-two {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 20px;
}

.fbs-list {
	list-style: none;
	margin: 0;
	padding: 0;
	font-size: 13px;
}

.fbs-list li {
	display: flex;
	justify-content: space-between;
	padding: 5px 0;
	border-bottom: 1px solid var(--fbs-line);
	gap: 10px;
	word-break: break-word;
}

.fbs-table {
	width: 100%;
	border-collapse: collapse;
	font-size: 13px;
	background: var(--fbs-panel);
	border-radius: var(--fbs-radius);
	overflow: hidden;
}

.fbs-table th,
.fbs-table td {
	text-align: left;
	padding: 8px 10px;
	border-bottom: 1px solid var(--fbs-line);
}

.fbs-table th {
	background: var(--fbs-bg);
	font-size: 12px;
	color: var(--fbs-muted);
}

.fbs-cards {
	display: grid;
	grid-template-columns: repeat( auto-fit, minmax( 280px, 1fr ) );
	gap: 14px;
}

.fbs-card {
	background: var(--fbs-panel);
	border: 1px solid var(--fbs-line);
	border-radius: var(--fbs-radius);
	padding: 16px;
}

.fbs-card h3 {
	margin: 0 0 6px;
	font-size: 15px;
}

.fbs-card .fbs-input {
	margin-bottom: 8px;
}

.fbs-pre {
	background: var(--fbs-bg);
	border: 1px solid var(--fbs-line);
	border-radius: 8px;
	padding: 10px;
	font-size: 12px;
	max-height: 260px;
	overflow: auto;
	white-space: pre-wrap;
}

/* Modals ----------------------------------------------------------- */

.fbs-modal {
	position: fixed;
	inset: 0;
	background: rgba( 15, 23, 42, .6 );
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 99999;
	padding: 16px;
}

.fbs-modal[hidden] {
	display: none;
}

.fbs-modal-box {
	background: var(--fbs-panel);
	color: var(--fbs-ink);
	border-radius: 12px;
	padding: 22px;
	width: 100%;
	max-width: 520px;
	max-height: 86vh;
	overflow-y: auto;
}

.fbs-modal-box h3 {
	margin: 0 0 8px;
}

.fbs-modal-actions {
	display: flex;
	justify-content: flex-end;
	gap: 8px;
	margin-top: 16px;
}

.fbs-file {
	display: block;
	width: 100%;
	padding: 20px;
	border: 2px dashed var(--fbs-line);
	border-radius: 10px;
	margin: 12px 0;
	background: var(--fbs-bg);
}

.fbs-progress-bar {
	height: 8px;
	background: var(--fbs-line);
	border-radius: 4px;
	overflow: hidden;
	margin-bottom: 6px;
}

.fbs-progress-bar span {
	display: block;
	height: 100%;
	width: 0;
	background: var(--fbs-accent);
	transition: width .2s;
}

.fbs-progress-text {
	font-size: 12px;
	color: var(--fbs-muted);
}

.fbs-ai-jobs {
	display: flex;
	gap: 6px;
	flex-wrap: wrap;
	margin-bottom: 12px;
}

/* Toast ------------------------------------------------------------ */

.fbs-toast {
	position: fixed;
	bottom: 20px;
	left: 50%;
	transform: translateX( -50% );
	background: #0f172a;
	color: #fff;
	padding: 10px 18px;
	border-radius: 24px;
	z-index: 100000;
	font-size: 13px;
	box-shadow: 0 6px 20px rgba( 0, 0, 0, .25 );
}

.fbs-toast.is-error {
	background: var(--fbs-danger);
}

.fbs-toast[hidden] {
	display: none;
}

.fbs-login-notice {
	padding: 30px;
	text-align: center;
	background: #f6f8fb;
	border-radius: 10px;
	color: #475569;
}

/* ==================================================================== */
/* Start screen: upload first                                           */
/* ==================================================================== */

.fbs-start {
	max-width: 760px;
	margin: 0 auto;
	padding: 28px 0 10px;
	text-align: center;
}

.fbs-start h1 {
	font-size: clamp( 1.7rem, 3.4vw, 2.4rem );
	font-weight: 300;
	letter-spacing: -.02em;
	margin: 0 0 10px;
	color: var(--fbs-ink);
}

.fbs-start-sub {
	color: var(--fbs-muted);
	font-size: 15px;
	max-width: 560px;
	margin: 0 auto 28px;
}

.fbs-drop {
	border: 2px dashed var(--fbs-line);
	border-radius: 16px;
	background: var(--fbs-panel);
	padding: 46px 24px;
	transition: border-color .15s, background .15s;
}

.fbs-drop.is-over {
	border-color: var(--fbs-accent);
	background: var(--fbs-bg);
}

.fbs-drop-inner {
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 10px;
}

.fbs-drop-icon {
	width: 54px;
	height: 54px;
	border-radius: 15px;
	background: var(--fbs-bg);
	color: var(--fbs-accent);
	display: grid;
	place-items: center;
	margin-bottom: 6px;
}

.fbs-drop-icon svg {
	width: 26px;
	height: 26px;
}

.fbs-drop-inner strong {
	font-size: 16px;
	color: var(--fbs-ink);
}

.fbs-drop-note {
	font-size: 13px;
	color: var(--fbs-muted);
}

.fbs-btn-lg {
	padding: 11px 26px;
	font-size: 15px;
	border-radius: 999px;
}

.fbs-start-recent {
	margin-top: 34px;
	text-align: left;
}

/* ==================================================================== */
/* Editor: FlippingBook-style content editor                            */
/* ==================================================================== */

.fbs-view-editor {
	margin: 0;
}

.fbs-ed {
	display: grid;
	grid-template-columns: 268px 118px 1fr 290px;
	height: calc( 100vh - var(--fbs-top, 0px) );
	min-height: 560px;
	background: var(--fbs-panel);
	border-top: 1px solid var(--fbs-line);
}

.fbs-ed.strip-closed {
	grid-template-columns: 268px 34px 1fr 290px;
}

@media ( max-width: 1240px ) {
	.fbs-ed,
	.fbs-ed.strip-closed {
		grid-template-columns: 1fr;
		height: auto;
	}
}

/* Left rail -------------------------------------------------------- */

.fbs-ed-rail {
	border-right: 1px solid var(--fbs-line);
	display: flex;
	flex-direction: column;
	overflow-y: auto;
	padding: 14px 12px 16px;
	background: var(--fbs-panel);
}

/* Rail header: back link, book title, Share / Save, quick links. */

.fbs-rail-top {
	padding: 0 2px 12px;
	border-bottom: 1px solid var(--fbs-line);
	margin-bottom: 4px;
}

.fbs-rail-top .fbs-stage-title {
	font-size: 16px;
	font-weight: 650;
	letter-spacing: -.01em;
	line-height: 1.3;
	margin: 2px 0 12px;
	overflow: hidden;
	text-overflow: ellipsis;
	white-space: nowrap;
}

.fbs-rail-cta {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 8px;
}

.fbs-cta-btn {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 7px;
	border: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	color: var(--fbs-ink);
	border-radius: 9px;
	padding: 9px 8px;
	font: inherit;
	font-size: 13.5px;
	font-weight: 600;
	cursor: pointer;
}

.fbs-cta-btn:hover {
	border-color: var(--fbs-accent);
	color: var(--fbs-accent);
}

.fbs-cta-save {
	background: var(--fbs-accent);
	border-color: var(--fbs-accent);
	color: #fff;
}

.fbs-cta-save:hover {
	background: var(--fbs-accent-dark);
	border-color: var(--fbs-accent-dark);
	color: #fff;
}

.fbs-cta-ico {
	display: grid;
	place-items: center;
}

.fbs-cta-ico svg {
	width: 15px;
	height: 15px;
}

.fbs-rail-quick {
	display: flex;
	gap: 14px;
	margin-top: 10px;
	padding: 0 2px;
}

.fbs-quick-btn {
	border: 0;
	background: none;
	padding: 0;
	font: inherit;
	font-size: 13px;
	color: var(--fbs-muted);
	cursor: pointer;
	text-decoration: underline;
	text-decoration-color: rgba( 100, 116, 139, .4 );
	text-underline-offset: 3px;
}

.fbs-quick-btn:hover {
	color: var(--fbs-accent);
}

/* Grouped accordions ----------------------------------------------- */

.fbs-acc {
	border-bottom: 1px solid var(--fbs-line);
}

.fbs-acc > summary {
	list-style: none;
	cursor: pointer;
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 13px 2px;
	font-size: 11.5px;
	font-weight: 700;
	text-transform: uppercase;
	letter-spacing: .08em;
	color: var(--fbs-muted);
}

.fbs-acc > summary::-webkit-details-marker {
	display: none;
}

.fbs-acc > summary::after {
	content: "";
	width: 7px;
	height: 7px;
	margin-left: auto;
	border-right: 1.6px solid currentColor;
	border-bottom: 1.6px solid currentColor;
	transform: rotate( 45deg );
	transition: transform .15s ease;
	flex: 0 0 auto;
}

.fbs-acc[open] > summary::after {
	transform: rotate( -135deg );
}

.fbs-acc > summary:hover {
	color: var(--fbs-ink);
}

.fbs-acc-body {
	padding: 0 0 12px;
}

/* One collapsible card per setting, as in the reference sidebar. */

.fbs-item {
	border: 1px solid var(--fbs-line);
	border-radius: 10px;
	margin-bottom: 6px;
	background: var(--fbs-panel);
}

.fbs-item[open] {
	border-color: var(--fbs-accent);
	box-shadow: 0 1px 3px rgba( 15, 23, 42, .06 );
}

.fbs-item > summary {
	list-style: none;
	cursor: pointer;
	display: flex;
	align-items: center;
	gap: 11px;
	padding: 8px 10px;
	font-size: 14px;
	color: var(--fbs-ink);
	border-radius: 10px;
}

.fbs-item > summary::-webkit-details-marker {
	display: none;
}

.fbs-item > summary:hover {
	background: var(--fbs-bg);
}

.fbs-item-ico {
	width: 28px;
	height: 28px;
	border-radius: 8px;
	display: grid;
	place-items: center;
	flex: 0 0 auto;
	background: #eef2f8;
	color: #475569;
}

.fbs-item[open] .fbs-item-ico {
	background: var(--fbs-accent-soft);
	color: var(--fbs-accent);
}

.fbs-item-ico svg {
	width: 16px;
	height: 16px;
}

.fbs-item-body {
	padding: 2px 10px 12px;
	border-top: 1px solid var(--fbs-line);
	margin-top: 2px;
}

.fbs-item-body > :first-child {
	margin-top: 10px;
}

/* Editing switch, at the head of the Interactions group. */

.fbs-edit-row {
	display: flex;
	align-items: center;
	gap: 8px;
	padding: 0 2px 10px;
}

.fbs-edit-hint {
	font-size: 12px;
	color: var(--fbs-muted);
	line-height: 1.35;
}

.fbs-stop-btn {
	margin-left: auto;
	flex: 0 0 auto;
	border: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	color: var(--fbs-ink);
	border-radius: 20px;
	padding: 3px 11px;
	font: inherit;
	font-size: 11.5px;
	font-weight: 600;
	letter-spacing: 0;
	text-transform: none;
	cursor: pointer;
}

.fbs-stop-btn:hover {
	border-color: var(--fbs-accent);
	color: var(--fbs-accent);
}

.fbs-rail-list {
	list-style: none;
	margin: 0;
	padding: 0;
}

/* Contents editor -------------------------------------------------- */

.fbs-toc-row {
	display: grid;
	grid-template-columns: 1fr 52px 26px;
	gap: 5px;
	align-items: center;
	margin-bottom: 5px;
}

.fbs-toc-page {
	text-align: center;
}

.fbs-toc-foot {
	display: flex;
	gap: 6px;
	margin-top: 8px;
}

.fbs-rail-btn {
	display: flex;
	align-items: center;
	gap: 12px;
	width: 100%;
	border: 0;
	background: none;
	padding: 9px 8px;
	border-radius: 9px;
	cursor: pointer;
	font: inherit;
	font-size: 14.5px;
	color: var(--fbs-ink);
	text-align: left;
}

.fbs-rail-btn:hover {
	background: var(--fbs-bg);
}

.fbs-rail-ico {
	width: 30px;
	height: 30px;
	border-radius: 8px;
	display: grid;
	place-items: center;
	flex: 0 0 auto;
	background: #eef2f8;
	color: #475569;
}

.fbs-rail-ico svg {
	width: 17px;
	height: 17px;
}

/* A colour per element family, like the reference editor. */
.fbs-ico-video       { background: #fde8e8; color: #d64545; }
.fbs-ico-link        { background: #e6f0fd; color: #2563eb; }
.fbs-ico-jump        { background: #e6f0fd; color: #2563eb; }
.fbs-ico-button      { background: #e8f1ff; color: #1d4ed8; }
.fbs-ico-audio       { background: #e4f3fb; color: #0e7490; }
.fbs-ico-gif         { background: #f3e8fd; color: #7c3aed; }
.fbs-ico-gallery     { background: #fdeede; color: #c2620d; }
.fbs-ico-image       { background: #fdeede; color: #c2620d; }
.fbs-ico-popup_image { background: #fdeede; color: #c2620d; }
.fbs-ico-text        { background: #eef2f8; color: #475569; }
.fbs-ico-shape       { background: #e9f6ee; color: #15803d; }
.fbs-ico-sticker     { background: #fef5e0; color: #b45309; }
.fbs-ico-form        { background: #e9f6ee; color: #15803d; }
.fbs-ico-web         { background: #e4f3fb; color: #0e7490; }
.fbs-ico-code        { background: #eef2f8; color: #475569; }

.fbs-rail-group {
	border-top: 1px solid var(--fbs-line);
	padding-top: 12px;
	margin-top: 12px;
}

.fbs-rail-group h4 {
	margin: 0 0 8px;
	font-size: 11.5px;
	text-transform: uppercase;
	letter-spacing: .07em;
	color: var(--fbs-muted);
}

.fbs-rail-group .fbs-btn {
	margin: 0 4px 4px 0;
}

.fbs-help-link {
	margin-top: auto;
	padding-top: 18px;
	display: flex;
	align-items: center;
	gap: 8px;
	color: var(--fbs-muted);
	text-decoration: none;
	font-size: 14px;
}

.fbs-help-link span {
	width: 22px;
	height: 22px;
	border-radius: 50%;
	border: 1.5px solid currentColor;
	display: grid;
	place-items: center;
	font-size: 12px;
}

.fbs-help-link:hover {
	color: var(--fbs-accent);
}

/* Page strip ------------------------------------------------------- */

.fbs-ed-strip {
	border-right: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	overflow-y: auto;
	padding: 10px 8px;
}

.fbs-strip-head {
	display: flex;
	justify-content: flex-end;
	margin-bottom: 8px;
}

.fbs-ed.strip-closed .fbs-thumbs {
	display: none;
}

.fbs-ed.strip-closed .fbs-strip-head button {
	transform: scaleX( -1 );
}

.fbs-thumbs {
	display: flex;
	flex-direction: column;
	gap: 10px;
}

.fbs-thumb {
	position: relative;
	border: 2px solid transparent;
	background: none;
	padding: 0;
	cursor: pointer;
	border-radius: 4px;
	display: block;
}

.fbs-thumb img {
	display: block;
	width: 100%;
	aspect-ratio: 3 / 4;
	object-fit: cover;
	border: 1px solid var(--fbs-line);
	border-radius: 3px;
	background: #fff;
}

.fbs-thumb span {
	display: block;
	text-align: center;
	font-size: 11px;
	color: var(--fbs-muted);
	padding-top: 3px;
}

.fbs-thumb.is-active {
	border-color: var(--fbs-accent);
}

.fbs-thumb.is-active span {
	color: var(--fbs-accent);
	font-weight: 600;
}

/* Stage ------------------------------------------------------------ */

.fbs-ed-stage {
	display: flex;
	flex-direction: column;
	min-width: 0;
	background: var(--fbs-panel);
	position: relative;
}

/* Conversion progress, shown over the canvas during Replace PDF. */

.fbs-ed-busy {
	position: absolute;
	inset: 0;
	z-index: 40;
	display: grid;
	place-items: center;
	background: rgba( 255, 255, 255, .88 );
}

@media ( prefers-color-scheme: dark ) {
	.fbs-app .fbs-ed-busy {
		background: rgba( 11, 18, 32, .9 );
	}
}

.fbs-ed-busy[hidden] {
	display: none;
}

.fbs-ed-busy-card {
	width: min( 360px, 80% );
	background: var(--fbs-panel);
	border: 1px solid var(--fbs-line);
	border-radius: 12px;
	padding: 20px;
	box-shadow: 0 8px 30px rgba( 15, 23, 42, .16 );
	text-align: center;
}

.fbs-ed-busy-text {
	margin: 10px 0 4px;
	font-weight: 600;
}

.fbs-stage-top {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 10px;
	padding: 12px 18px;
	border-bottom: 1px solid var(--fbs-line);
	flex-wrap: wrap;
}

.fbs-stage-title {
	font-weight: 600;
	color: var(--fbs-ink);
}

.fbs-stage-actions {
	display: flex;
	gap: 6px;
	flex-wrap: wrap;
}

.fbs-canvas-wrap {
	flex: 1;
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	padding: 22px;
	min-height: 0;
	overflow: auto;
	/* Dotted work surface, as in the reference editor. */
	background-color: #fbfcfe;
	background-image: radial-gradient( #d8e0ec 1px, transparent 1px );
	background-size: 16px 16px;
}

.fbs-canvas {
	position: relative;
	background: #fff;
	box-shadow: 0 2px 16px rgba( 15, 23, 42, .16 );
	line-height: 0;
	flex: 0 0 auto;
}

.fbs-canvas-img {
	display: block;
	max-width: 100%;
	max-height: 62vh;
	width: auto;
}

.fbs-page-arrow {
	flex: 0 0 auto;
	width: 34px;
	height: 56px;
	border: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	border-radius: 8px;
	cursor: pointer;
	color: var(--fbs-muted);
	font-size: 15px;
}

.fbs-page-arrow:hover {
	color: var(--fbs-accent);
	border-color: var(--fbs-accent);
}

/* Bottom bar ------------------------------------------------------- */

.fbs-ed-bottom {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 12px;
	padding: 10px 18px;
	border-top: 1px solid var(--fbs-line);
	flex-wrap: wrap;
}

.fbs-bottom-left,
.fbs-bottom-right {
	display: flex;
	align-items: center;
	gap: 6px;
}

.fbs-page-count {
	font-size: 13px;
	color: var(--fbs-muted);
	display: flex;
	align-items: center;
	gap: 6px;
	white-space: nowrap;
}

.fbs-page-input {
	width: 54px;
	padding: 4px 6px;
	border: 1px solid var(--fbs-line);
	border-radius: 6px;
	text-align: center;
	font: inherit;
	font-size: 13px;
	background: var(--fbs-panel);
	color: var(--fbs-ink);
}

/* Properties panel ------------------------------------------------- */

.fbs-ed-props {
	border-left: 1px solid var(--fbs-line);
	overflow-y: auto;
	padding: 16px;
	background: var(--fbs-panel);
}

.fbs-prop-head {
	display: flex;
	align-items: center;
	gap: 9px;
	margin-bottom: 14px;
}

.fbs-prop-head .fbs-rail-ico {
	width: 26px;
	height: 26px;
}

.fbs-prop-head h3 {
	margin: 0;
	font-size: 15.5px;
	font-weight: 600;
	color: var(--fbs-ink);
}

.fbs-prop-actions {
	display: flex;
	gap: 6px;
	margin-bottom: 16px;
}

.fbs-prop-actions .fbs-btn {
	flex: 1;
	justify-content: center;
}

.fbs-group {
	border: 1px solid var(--fbs-line);
	border-radius: 10px;
	margin-bottom: 12px;
	overflow: hidden;
}

.fbs-group > summary {
	list-style: none;
	cursor: pointer;
	padding: 11px 13px;
	font-size: 11.5px;
	font-weight: 700;
	letter-spacing: .07em;
	text-transform: uppercase;
	color: var(--fbs-muted);
	background: var(--fbs-bg);
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.fbs-group > summary::-webkit-details-marker {
	display: none;
}

.fbs-group > summary::after {
	content: "\25BE";
	font-size: 11px;
	transition: transform .15s;
}

.fbs-group[open] > summary::after {
	transform: rotate( 180deg );
}

.fbs-group-body {
	padding: 13px;
}

.fbs-group-body .fbs-field:last-child {
	margin-bottom: 0;
}

/* X / W over Y / H with a ratio lock spanning both rows. */
.fbs-geo {
	display: grid;
	grid-template-columns: 1fr 1fr 34px;
	gap: 8px;
	align-items: center;
}

.fbs-geo .fbs-field {
	margin: 0;
	display: flex;
	align-items: center;
	gap: 6px;
}

.fbs-geo .fbs-field > span {
	margin: 0;
	width: 14px;
	font-size: 11.5px;
	font-weight: 600;
	color: var(--fbs-muted);
}

.fbs-lock {
	grid-row: span 2;
	align-self: center;
	justify-self: center;
	width: 32px;
	height: 32px;
	border: 1px solid var(--fbs-line);
	border-radius: 7px;
	background: var(--fbs-panel);
	cursor: pointer;
	color: var(--fbs-muted);
	font-size: 14px;
}

.fbs-lock.is-on {
	border-color: var(--fbs-accent);
	color: var(--fbs-accent);
	background: var(--fbs-bg);
}

.fbs-props-empty {
	color: var(--fbs-muted);
	font-size: 13.5px;
	padding: 30px 10px;
	text-align: center;
	line-height: 1.5;
}
.fbs-ico-quiz { background: #e9f6ee; color: #15803d; }

/* ==================================================================== */
/* App shell: fixed left sidebar + main column                          */
/* ==================================================================== */

.fbs-app {
	--fbs-side-w: 238px;
	display: grid;
	grid-template-columns: var(--fbs-side-w) 1fr;
	align-items: stretch;
	min-height: 70vh;
}

.fbs-app.is-editor {
	--fbs-side-w: 68px;
}

.fbs-sidebar {
	display: flex;
	flex-direction: column;
	background: var(--fbs-panel);
	border-right: 1px solid var(--fbs-line);
	padding: 18px 12px;
	gap: 4px;
	min-width: 0;
}

.fbs-side-brand {
	display: flex;
	align-items: center;
	gap: 10px;
	font-weight: 700;
	font-size: 16px;
	color: var(--fbs-ink);
	padding: 4px 8px 18px;
	white-space: nowrap;
	overflow: hidden;
}

.fbs-side-nav {
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.fbs-side-btn {
	display: flex;
	align-items: center;
	gap: 11px;
	width: 100%;
	border: 0;
	background: none;
	padding: 10px 10px;
	border-radius: 9px;
	cursor: pointer;
	font: inherit;
	font-size: 14.5px;
	color: var(--fbs-body);
	text-align: left;
	text-decoration: none;
	white-space: nowrap;
	overflow: hidden;
}

.fbs-side-btn:hover {
	background: var(--fbs-bg);
	color: var(--fbs-ink);
}

.fbs-side-btn.is-active {
	background: var(--fbs-accent);
	color: #fff;
}

.fbs-side-ico {
	flex: 0 0 auto;
	width: 22px;
	height: 22px;
	display: grid;
	place-items: center;
}

.fbs-side-ico svg {
	width: 19px;
	height: 19px;
}

.fbs-side-foot {
	margin-top: auto;
	padding-top: 16px;
	border-top: 1px solid var(--fbs-line);
	display: flex;
	flex-direction: column;
	gap: 2px;
}

.fbs-side-foot .fbs-plan-chip {
	margin: 0 6px 10px;
	display: inline-block;
	font-size: 11.5px;
	color: var(--fbs-muted);
	border: 1px solid var(--fbs-line);
	padding: 4px 9px;
	border-radius: 20px;
	text-align: center;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
}

/* Collapsed to icons while the editor is open. */
.fbs-app.is-editor .fbs-side-label,
.fbs-app.is-editor .fbs-side-brand .fbs-brand-name,
.fbs-app.is-editor .fbs-side-foot .fbs-plan-chip {
	display: none;
}

.fbs-app.is-editor .fbs-side-btn {
	justify-content: center;
	padding: 11px 0;
}

.fbs-app.is-editor .fbs-sidebar {
	padding: 18px 8px;
}

.fbs-app.is-editor .fbs-side-brand {
	justify-content: center;
	padding: 4px 0 18px;
}

/* Main column ------------------------------------------------------ */

.fbs-main {
	min-width: 0;
	display: flex;
	flex-direction: column;
}

.fbs-mainbar {
	display: flex;
	align-items: center;
	gap: 14px;
	padding: 14px 20px;
	border-bottom: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
}

.fbs-mainbar-title {
	flex: 1;
	margin: 0;
	font-size: 18px;
	font-weight: 600;
	color: var(--fbs-ink);
	letter-spacing: -.01em;
}

.fbs-burger {
	display: none;
	border: 1px solid var(--fbs-line);
	background: var(--fbs-panel);
	width: 38px;
	height: 36px;
	border-radius: 9px;
	cursor: pointer;
	color: var(--fbs-ink);
	font-size: 15px;
}

/* The editor fills the main column, so it needs no page padding. */
.fbs-app.is-editor .fbs-body {
	padding: 0;
}

.fbs-app.is-editor .fbs-view-editor {
	margin: 0;
}

.fbs-app.is-editor .fbs-mainbar {
	display: none;
}

@media ( max-width: 900px ) {
	.fbs-app,
	.fbs-app.is-editor {
		grid-template-columns: 1fr;
	}

	.fbs-sidebar {
		display: none;
		border-right: 0;
		border-bottom: 1px solid var(--fbs-line);
	}

	.fbs-sidebar.is-open {
		display: flex;
	}

	.fbs-app.is-editor .fbs-side-label,
	.fbs-app.is-editor .fbs-side-brand .fbs-brand-name {
		display: inline;
	}

	.fbs-app.is-editor .fbs-side-btn {
		justify-content: flex-start;
		padding: 10px;
	}

	.fbs-app.is-editor .fbs-mainbar {
		display: flex;
	}

	.fbs-burger {
		display: block;
	}
}